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多种物化探方法在贺州某地热温泉勘查中的综合应用 预览
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作者 王建超 施玉娇 +1 位作者 曾晖 敬荣中 《矿产与地质》 2019年第2期304-309,共6页
勘查工作区紧邻贺州温泉,地理条件优越,具有较大的地热开发潜力。通过多种物化探方法组合探测应用来查找主要的导水储水断裂,确定了构造破碎带的主体位置,圈定了有利的储热区域,并布置了验证钻孔,工程验证结果与探测结论吻合。该多种物... 勘查工作区紧邻贺州温泉,地理条件优越,具有较大的地热开发潜力。通过多种物化探方法组合探测应用来查找主要的导水储水断裂,确定了构造破碎带的主体位置,圈定了有利的储热区域,并布置了验证钻孔,工程验证结果与探测结论吻合。该多种物化探方法在地热温泉勘查中的综合应用成效突出,可以引荐于类似地热勘查项目。 展开更多
关键词 地热 可控源音频大地电磁法(CSAMT) 氡气测量 浅层地温测量 土壤汞气测量
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Discussion on evaluation methodology of hydrothermal geothermal reservoir 预览
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作者 FENG Jian-yun ZHANG Ying +2 位作者 HE Zhi-liang SUN Zi-ming LUO Jun 《地下水科学与工程:英文版》 2019年第1期29-41,共13页
Geothermal reservoir are the vehicle of geothermal resources and their occurrence as well as the storage mass. Precise description and evaluation of geothermal reservoir serves to be the cornerstone of geothermal reso... Geothermal reservoir are the vehicle of geothermal resources and their occurrence as well as the storage mass. Precise description and evaluation of geothermal reservoir serves to be the cornerstone of geothermal resource exploration and exploitation. Based on the principles and basic train of geothermal reservoir evaluation, in this work, the content of geothermal reservoir evaluation was determined and the value range of geothermal reservoir evaluation parameters was discussed in combination with the actual production data of two types of geothermal reservoir in North China: The Neogene Guantao Formation sandstone pore-type geothermal reservoir, and the Cambrian- Ordovician and Middle Proterozoic Jixian carbonate karst-fissure-type geothermal reservoir. An evaluation method for the sandstone pore-type and the carbonate karstfissure- type geothermal reservoir is finally established based on the analysis of the production data, i.e. the values of geothermal reservoir temperature, geothermal fluid production, reinjection, physical properties and other parameters are assigned, and the geometric average value of the assigned values for the above-mentioned parameters is taken as the overall evaluation index of geothermal reservoir. From large to small, this index categorizes geothermal reservoir into three grades: I, II and III, which corresponds to advantageous, moderate advantageous and disadvantageous geothermal reservoir respectively. The geothermal reservoir of the same grade are further classified in light of the index value, thus realizing the comprehensive evaluation of geothermal reservoir. 展开更多
关键词 EVALUATION METHODOLOGY HYDROTHERMAL GEOTHERMAL GEOTHERMAL RESERVOIR
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2018年地热勘探开发热点回眸
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作者 马峰 王贵玲 +1 位作者 魏帅超 孙占学 《科技导报》 CAS CSCD 北大核心 2019年第1期134-143,共10页
2018年地热领域研究热点纷呈:世界各国在地热发电领域发展迅猛,中国面临着很大的机遇和挑战,地热勘查逐步走向精细化,地热开发逐步走向集约化,地热利用逐步走向综合化。地热成为地质界真正的热点,封闭式井下换热技术、采灌均衡地热评价... 2018年地热领域研究热点纷呈:世界各国在地热发电领域发展迅猛,中国面临着很大的机遇和挑战,地热勘查逐步走向精细化,地热开发逐步走向集约化,地热利用逐步走向综合化。地热成为地质界真正的热点,封闭式井下换热技术、采灌均衡地热评价技术、地热-太阳能等混合能源开发利用等方面相关技术和规范不断完善,在理论方面,地热开发过程与微地震的发生之间的机制认识更进一步,干热岩开发理论更加深入,此外,围绕地热流体的生态环境、微生物以及油田地热开发方面也呈现出创新性的见解。 展开更多
关键词 地热 井下换热 采灌均衡 增强型地热
Research on basic characteristics of 2H, 18O and 14C in geothermal fluid in Guangdong Province, China 预览
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作者 ZENG Tu-rong 《地下水科学与工程:英文版》 2019年第1期42-52,共11页
In general, previous geothermal geochemical studies in Guangdong Province mainly involves single method to cover limited aspects and areas. In that way, various methods available cannot actually provide more convincin... In general, previous geothermal geochemical studies in Guangdong Province mainly involves single method to cover limited aspects and areas. In that way, various methods available cannot actually provide more convincing results of geothermal fluid’s circulation system and evolution process from different dimensions, especially in terms of isotope. As a result, more comprehensive researches remain to be done on geochemistry of geothermal fluid, in particular, the space-time law of isotope’s evolution pattern as well as recharge cycle. Based on data of environmental isotopes (2H and 18O) and the isotope of radiometric dating (14C), geothermal geology, characteristics of groundwater flow field and types of goethermal reservior in Guangdong Province are taken into account in this paper, so as to analyze numerical rule and spatial distribution features of isotopes. Thus, corresponding main causes, mechanism and hydrogeological significance can be revealed to further study the potential of geothermal fluid to renew and recharge in the long run, which is conducive to enrich geothermal theories and solve existing hydrogeological problems. 展开更多
关键词 GEOTHERMAL FLUID ISOTOPE CHARACTERISTICS TYPES of GEOTHERMAL reservior
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Discussion on establishing monitoring networks for temperature fields of shallow thermal energy in Shandong, China 预览
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作者 ZHOU Bo WEI Shan-ming +2 位作者 WANG Tao NIE Yu-peng WANG Chuan-qi 《地下水科学与工程:英文版》 2019年第1期86-93,共8页
In the recent decade, the construction projects related to shallow geothermal energy engineering have undergone rapid development in Shandong Province. The predominant type of these developments and applications was h... In the recent decade, the construction projects related to shallow geothermal energy engineering have undergone rapid development in Shandong Province. The predominant type of these developments and applications was heat exchange through buried tubes and the main targets were residential and office buildings. However, an overwhelming majority of the completed geothermal heat pump projects lacked monitoring devices so that they were unable to comprehensively reflect the background values for the geothermal fields within the province and few researches were conducted on their influence on the geological environment. In this paper, locations for monitoring shallow geothermal energy and their validity of the monitoring point deployment were studied in view of the development and application status as well as geological background conditions of various projects located in multiple cities providing data support for analyzing the fluctuation trend and influence of large-scale shallow geothermal energy applications on the shallow geothermal and the feasibility and parameter designs of newly built systems in Shandong Province in the future. 展开更多
关键词 SHALLOW GEOTHERMAL energy GEOTHERMAL FIELD MONITORING network
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Influences of Reservoir Heterogeneity and Anisotropy on CO2 Sequestration and Heat Extraction for CO2-Based Enhanced Geothermal System
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作者 WANG Changlong HUANG Zhijia +2 位作者 LU Yuehong TANG Gang LI Huan 《热科学学报:英文版》 SCIE EI CAS CSCD 2019年第2期319-325,共7页
Enhanced geothermal systems(EGS) have a great potential to extract geothermal energy and have attracted much interest. In this paper, based on a 3D thermal-hydrologic model considering CO2 sequestration, the influence... Enhanced geothermal systems(EGS) have a great potential to extract geothermal energy and have attracted much interest. In this paper, based on a 3D thermal-hydrologic model considering CO2 sequestration, the influences of reservoir heterogeneity and anisotropy on CO2 sequestration and heat extraction in CO2-based EGS are investigated. Different heterogeneous reservoirs and homogeneous reservoir are compared, and different ratios among reservoir permeability components are compared. The results show that greater reservoir heterogeneity enhances CO2 sequestration and restrains heat extraction. Higher ratio between horizontal(x and y directions) and vertical permeability components enhances CO2 sequestration and heat extraction, and vertical permeability component has a little effect. With the increasing ratio between x-directional(perpendicular to the line of the injection well and the production well) and y-directional(perpendicular to x direction) reservoir permeability components(i.e. kx:ky), both CO2 sequestration amount and steady-state heat extraction rate first increase and then decrease, and thermal breakthrough time increases, showing that there exists an optimum kx:ky, which is about 1:1. The results of this paper indicate that reservoir heterogeneity and anisotropy have important influences on CO2 sequestration and heat extraction. 展开更多
关键词 ENHANCED GEOTHERMAL system CO2 SEQUESTRATION heat extraction RESERVOIR heterogeneity RESERVOIR ANISOTROPY
一种以秸秆燃烧为地热热源的温室设计 预览
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作者 刘晶 王慧杰 +1 位作者 刘跃鹏 竹梦婕 《现代农业装备》 2019年第3期61-65,共5页
为了解决农作物秸秆焚烧污染环境、综合利用率低以及日光温室冬季温度不足的问题,本文设计研究一种以秸秆燃烧为地热热源的温室,主要包括秸秆炉和温室大棚2部分。介绍了温室的设计方案、结构以及工作原理,并对棚内升温和有害气体排放2... 为了解决农作物秸秆焚烧污染环境、综合利用率低以及日光温室冬季温度不足的问题,本文设计研究一种以秸秆燃烧为地热热源的温室,主要包括秸秆炉和温室大棚2部分。介绍了温室的设计方案、结构以及工作原理,并对棚内升温和有害气体排放2个指标进行测试试验。试验结果表明,该温室性能良好、控温简便,节能环保。 展开更多
关键词 温室大棚 秸秆燃烧 地热 供暖
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Energy Analysis of a Counter-Flow Plate Heat Exchanger Working in Stationary Mode and Using Geothermal Energy for Drying 预览
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作者 Jean Pierre Tine Biram Dieng +1 位作者 Mouhamadou Lamine Cisse Marie Pascaline Sarr 《材料科学与工程:中英文A版》 2019年第2期64-74,共11页
This paper presents an energy analysis of a counter-flow plate heat exchanger operating in stationary mode. The exchanger comprises a rectangular plate of which we vary the heat transfer surface (by fixing its width a... This paper presents an energy analysis of a counter-flow plate heat exchanger operating in stationary mode. The exchanger comprises a rectangular plate of which we vary the heat transfer surface (by fixing its width and varying its length) and analyze the evolution of some parameters as a function of this heat transfer surface. The parameters to be analyzed are the NTU (number of transfer units), the effectiveness, the temperatures of both primary and secondary fluids and the heat flux. The analysis carried out will help understand the behavior of the counter-flow plate heat exchanger operating in stationary mode. Then, the heat transfer surface of the exchanger is determined for the sizing of a counter-flow plate heat exchanger intended to produce hot air for drying. That plate heat exchanger uses water vapor heated by geothermal energy as a primary fluid and atmospheric air as a secondary fluid. The products to be dried are onions with a mass flow of water to be evacuated of 100 kg/h. 展开更多
关键词 EXCHANGER flux temperature GEOTHERMAL STATIONARY MODE
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二氧化碳羽流地热开采影响因素的仿真研究 预览
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作者 王军 《江西化工》 2019年第3期101-104,共4页
本文主要对二氧化碳羽流地热开采过程中储层内部的温度演变特征进行了研究,先对热补偿效应的影响规律进行了分析,基于此对不同因素影响下的热补偿效果进行了系统概述,以期为工业设计提供一定依据。
关键词 地热 热补偿 导热系数 储层
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浙江省东阳市横店镇忠信堂温泉地热地质条件分析与验证 预览
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作者 鲁彦宏 周新潮 冯益潘 《科技创新与应用》 2019年第24期87-89,共3页
通过对浙江省横店镇忠信堂地热区域地质、矿产地质等资料的分析,并结合地热地质调查、钻探及物探等勘查工作,基本查明忠信堂地热地质特征、热储结构与空间分布,证实忠信堂地下热水的分布受断裂构造控制,且与萤石矿带的成因联系,热水由... 通过对浙江省横店镇忠信堂地热区域地质、矿产地质等资料的分析,并结合地热地质调查、钻探及物探等勘查工作,基本查明忠信堂地热地质特征、热储结构与空间分布,证实忠信堂地下热水的分布受断裂构造控制,且与萤石矿带的成因联系,热水由大气降水沿导水、储水的构造系统深循环形成。 展开更多
关键词 忠信堂 地热 热储
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Renewable Energy:Wind Turbines,Solar Cells,Small Hydroelectric Plants,Biomass,and Geothermal Sources of Energy 预览
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作者 Natasa A. Kablar 《能源与动力工程:英文版》 2019年第4期162-172,共11页
In this paper,we present five basic types of renewable energy sources,namely:wind turbines,solar cells,small hydroelectric plants,biomass,and geothermal sources of energy.Wind turbines transform energy of wind into el... In this paper,we present five basic types of renewable energy sources,namely:wind turbines,solar cells,small hydroelectric plants,biomass,and geothermal sources of energy.Wind turbines transform energy of wind into electrical energy,solar cells transform energy of sun into electric energy,hydroelectric plants transform energy of water into electric energy,devices or machines can be constructed to transform energy of biomass into heat energy,and geothermal energy into some form of energy.In this paper we present basic information and reasons why there is need today to use these forms of energy—called green energies,we present how these devices or machines function,and we propose for future work design of typical devices or machines that will satisfy basic functional needs. 展开更多
关键词 Wind ENERGY solar ENERGY water ENERGY BIOMASS ENERGY GEOTHERMAL ENERGY RENEWABLE ENERGIES electrical power generation of electricity
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粤西深大断裂温热泉水化学分析
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作者 王贝贝 卢国平 +1 位作者 胡晓农 欧浩 《环境化学》 CAS CSCD 北大核心 2019年第5期1150-1160,共11页
通过对粤西深大断裂(即信宜-廉江深大断裂带区域)温泉地球化学特征等研究,揭示其水化学组分主要为硅酸盐矿物的溶解控制,Na-K-Mg图解显示研究区内热泉水岩作用处于不平衡状态,另外还估算了地热水的热储温度为63.2-122.5℃及循环深度为14... 通过对粤西深大断裂(即信宜-廉江深大断裂带区域)温泉地球化学特征等研究,揭示其水化学组分主要为硅酸盐矿物的溶解控制,Na-K-Mg图解显示研究区内热泉水岩作用处于不平衡状态,另外还估算了地热水的热储温度为63.2-122.5℃及循环深度为1453-3430 m.该成果可为进一步探讨地热水与深大断裂之间的联系及水文地质条件、地质构造及地热资源开发等提供依据. 展开更多
关键词 断裂带 温泉 地热 水化学 水岩相互作用
Causes of geothermal fields and characteristics of ground temperature fields in China 预览
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作者 MAO Xiao-ping LI Ke-wen WANG Xin-wei 《地下水科学与工程:英文版》 2019年第1期15-28,共14页
There are many arguments on energy sources and main controlling factors of geothermal fields, so a systematic study on the distribution of ground temperature fields shall be necessary. In this paper the thermal conduc... There are many arguments on energy sources and main controlling factors of geothermal fields, so a systematic study on the distribution of ground temperature fields shall be necessary. In this paper the thermal conduction forward method of geothermal field is used to simulate cooling rate of abnormal heat sources and heat transfer of the paleo-uplift model. Combined with a large number of geothermal field exploration cases and oil exploration well temperature curves of domestic and foreign, the following conclusions are drawn:(1) According to the magmatic activity time, the magmatism activities are divided into two categories: Magma active areas (activity time < 500 000 years) and weak/magma inactive areas (activity time > 500 000 years). The latter has a fast cooling rate (the cooling time of the magma pocket buried around 10 km is less than 200 000 years) after it has intruded into the shallow layer and it has no direct contribution to modern geothermal fields;(2) China belongs to a weak/magma inactive area such as Tengchong region and Qinghai-Tibet region because the chronological data of these regions show that its magma activity time is more than 500 000 years;(3) The temperature of most geothermal fields can be obviously divided into three segments in the vertical direction: A high geothermal gradient segment (Segment H) at the surface, then a low geothermal gradient segment (Segment L) at a secondary depth, and finally a lower temperature segment (Segment D) at a deeper depth. The temperature isoline presents a mirror reflection relation on the temperature profile, indicating that geothermal field is dominated by heat conduction, rather than having an abnormally high temperature “heat source” to provide heat;(4) Near-surface (0-5 km) materials’ lateral heterogeneity caused by tectonic movement shall probably be the main controlling factor of ground temperature fields. 展开更多
关键词 Ground temperature FIELD BASEMENT HEAT flow GEOTHERMAL FIELD MAGMA pocket Coefficient of HEAT conduction Palaeouplifth MAGNETOTELLURIC
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Comprehensive geochemical/hydrochemical and geo-thermometry analysis of Unai geothermal field,Gujarat,India
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作者 Manan Shah Anirbid Sircar +3 位作者 Nahid Shaikh Karan Patel Darshan Sharma Dwijen Vaidya 《中国地球化学学报:英文版》 EI CAS CSCD 2019年第1期145-158,共14页
The knowledge of water temperature produced from a geothermal reservoir and its composition is of utmost importance in designing utilization strategies,the surface production facilities and in selecting the material t... The knowledge of water temperature produced from a geothermal reservoir and its composition is of utmost importance in designing utilization strategies,the surface production facilities and in selecting the material to be used.Unai hot springs are located in the southern part of Gujarat,India with discharge temperatures varying from 51 to 56℃.With the aim of developing Unai as a potential geothermal field and exploiting it in the future,geochemical and geothermometrical study was undertaken.The samples were collected from various Unai geothermal location and analysis of chemical composition of water obtained from different wells was done.The concentration of Silica,carbonate and ions like Na and C1 have been analyzed to delineate the path of water movement in the subsurface and classify the reservoir based on the enthalpy.The ratio of the concentration of ions like Na+ and K+ and the relative proportions of various sets of ions were also used to characterize the geothermal reservoir and the reservoir fluid by the use of ternary diagrams.Na-K-Ca,Chalcedony,quartz,and Silica geo-thermometers have been studied.The present study also envisages the importance of graphical representations like Piper diagram,Scholler etc.to determine variation in hydrochemical facies and to understand the evolution of hydrochemical processes in the Unai geothermal field respectively.The study yields the conclusion that the reservoir under consideration is a low enthalpy reservoir with temperature ranging from 60 to 80 ℃. 展开更多
关键词 GEOTHERMAL ENERGY Hydrochemical GEOCHEMICAL Geothermometery RENEWABLE ENERGY
河南中深层地热热交换系统应用浅析 预览
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作者 邢向渠 孟江 +2 位作者 李卫华 张秋冬 魏庆 《地质装备》 2019年第4期39-42,共4页
本文以河南省部分地区地热储藏特点为例,在进行地热资源开采的时候选用适当的导热介质直接将热能带到地表,通过地表热交换系统将热能转储到水中,由加热后的热水向用户供暖,满足小区、医院、公共办公场所、酒店公寓等冬期供暖需要。整个... 本文以河南省部分地区地热储藏特点为例,在进行地热资源开采的时候选用适当的导热介质直接将热能带到地表,通过地表热交换系统将热能转储到水中,由加热后的热水向用户供暖,满足小区、医院、公共办公场所、酒店公寓等冬期供暖需要。整个热转换系统和地表热交换系统严格密封,不存在介质渗漏现象,而且换热效率高,既达到供暖要求,又不污染环境,是一种实用性极强的地热应用系统。 展开更多
关键词 地热 环保 热交换
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地热井井间干扰模拟研究——以重庆观音峡背斜东翼为例
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作者 吕玉香 蒋晶 +2 位作者 杨平恒 谢斌 胡伟 《重庆大学学报:自然科学版》 CAS CSCD 北大核心 2019年第2期94-104,共11页
岩溶含水介质的地下水模拟与应用是水文地质工作中的热点与难点。基于Visual Modflow软件平台,选用重庆观音峡背斜东翼静观片区作为研究对象,利用区内3口地热井(ZK1、ZK1-1、ZK3)多次抽水试验资料,建立数值模拟模型,预测分析了不同条件... 岩溶含水介质的地下水模拟与应用是水文地质工作中的热点与难点。基于Visual Modflow软件平台,选用重庆观音峡背斜东翼静观片区作为研究对象,利用区内3口地热井(ZK1、ZK1-1、ZK3)多次抽水试验资料,建立数值模拟模型,预测分析了不同条件下新增地热井与已有ZK1井井间干扰程度。结果表明:当新增井与ZK1井的距离和新增井开采量分别为1km和500m3/d,2km和1 000m3/d,5km和1 500,2 000,2 500m3/d时,对ZK1附近流场均无影响;当新增井与ZK1井的距离和新增井开采量分别为1km和1 000m3/d,2km和1 500m3/d,5km和3 000m3/d时,ZK1井水头分别下降19,13和8m。说明地热井井间距越小,开采量越大,对相邻井产生干扰的可能性越大,反之越小,同时说明利用Visual Modflow模型模拟地热水流场特征,预测地热井干扰程度这一方法是可行的。 展开更多
关键词 地热 井间干扰 数值模拟 VISUAL MODFLOW 观音峡背斜
广东河源断裂带地热成因及与构造关系初探 预览
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作者 Lisa TANNOCK 王亚 +4 位作者 李景富 刘洁 张珂 徐力峰 Klaus REGENAUER-LIEB 《地质力学学报》 CSCD 2019年第3期400-411,共12页
广东省河源断裂带位于中国东南沿海地热异常区,地热资源十分丰富,但其形成机制和利用前景尚不确定。为此文章开展了多学科综合分析,获得以下初步认识:温泉是断裂带内深循环地下水被地温加热而成,断裂剪切热和花岗岩浆残余热的贡献基本... 广东省河源断裂带位于中国东南沿海地热异常区,地热资源十分丰富,但其形成机制和利用前景尚不确定。为此文章开展了多学科综合分析,获得以下初步认识:温泉是断裂带内深循环地下水被地温加热而成,断裂剪切热和花岗岩浆残余热的贡献基本可以排除;沿断裂展布的厚层硅化带是古水热活动的产物;硅化带形成时期的挤压应力方向为北东-南西,与河源断裂及河源盆地晚白垩世以来的伸展活动对应,现代构造应力场为北西西-南东东方向挤压,与古应力场相比发生了明显变化;现今构造应力场使得北东向河源断裂呈右旋挤压运动,而北西向断裂则发生左旋张剪,导致地下水循环格局也发生相应改变;目前温泉沿河源断裂呈带分布,沿北西向断裂呈线性溢出,断裂交汇部位是热泉上升的主要通道。总体而言,河源地区拥有令人鼓舞的地热资源及应用前景,有可能达到建设地热发电厂的目标。建议继续深入开展地质学、地球物理、水文地质学和地热成因机理等多学科综合研究,从而更好地定量评价地热潜能与开发前景。 展开更多
关键词 河源断裂 地热 硅化带 构造应力场 地下水循环
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The impact of crustal rheology on natural seismicity:Campi Flegrei caldera case study 预览
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作者 R.Castaldo L.D’Auria +3 位作者 S.Pepe G.Solaro V.De Novellis P.Tizzani 《地学前缘:英文版》 CAS CSCD 2019年第2期453-466,共14页
We analyze the crustal rheology beneath the active resurgent Campi Flegrei caldera(CFc) in Southern Italy by modelling the 3 D brittle-ductile(B/D) transition, based on available thermal, geological and geophysical da... We analyze the crustal rheology beneath the active resurgent Campi Flegrei caldera(CFc) in Southern Italy by modelling the 3 D brittle-ductile(B/D) transition, based on available thermal, geological and geophysical data. Firstly, the thermal field in the conductive physical regime is modeled using a finite element method;based on an optimization tool, this method is applied to evaluate the location and dimensions of the deep thermal source beneath the caldera. A horizontally-extended thermal anomaly located at about 5000 m depth below sea level is identified beneath Pozzuoli Bay, a part of the CFc. The same isotherm is located at a depth of 20,000 m beyond the caldera. This indicates a higher horizontal temperature gradient in the caldera with respect to the surrounding area. Next, we utilize this thermal model to image the 3D rheological stratification of the shallow crust below the caldera with two different values of strain rates. Within the caldera, the B/D transitions with ε equal to 10-12 s-1 and 10-8 s-1 are located at 3000 m and 5000 m depths, respectively. Outside the caldera, the transition is very deep(15,000-20,000 m), seemingly uninfluenced by the thermal state of the CFc volcanism. Finally, we compare these results with the spatial distribution of earthquake hypocenters, Benioff strain release and b-value distribution to investigate the relationship between crustal rheology and seismicity characteristics. Our analysis reveals that the image of the B/D transition is in agreement with the distribution of earthquake hypocenters, constraining the potential seismogenic volume of the region. Our study demonstrates that knowledge of the rheological state of a volcanic system is an important element to interpret its dynamic, forecast future activity and improve evaluation of the associated seismic hazard. 展开更多
关键词 Brittle-ductile transition SEISMICITY CUT-OFF GEOTHERMAL measurements FE CONDUCTIVE thermal MODELLING Campi Flegrei CALDERA
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雄安新区起步区及周边地热资源特征与影响因素
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作者 戴明刚 汪新伟 +2 位作者 刘金侠 雷海飞 鲍志东 《地质科学》 CAS CSCD 北大核心 2019年第1期176-191,共16页
本文综合分析了雄安新区起步区及周边地区构造、沉积、地温梯度、储盖组合、热储成岩与孔隙演化史等地质特征,总结了研究区地热资源成藏模式与影响因素:中-上元古界碳酸盐岩热储沉积期物质基础的差异性、后期的燕山—喜山构造运动演化... 本文综合分析了雄安新区起步区及周边地区构造、沉积、地温梯度、储盖组合、热储成岩与孔隙演化史等地质特征,总结了研究区地热资源成藏模式与影响因素:中-上元古界碳酸盐岩热储沉积期物质基础的差异性、后期的燕山—喜山构造运动演化特征控制了研究区热储、盖层和通道组合特征;特别是研究区断裂构造作用是决定研究区碳酸盐岩地层抬升、剥蚀并使其遭受岩溶作用的主导因素,其控制了本区岩溶发育区的分布和岩溶古地貌的总体格局;中-上元古界碳酸盐岩岩相以发育藻礁滩和藻坪为特征;岩溶作用类型主要有准同生岩溶、层间岩溶、潜山岩溶和断层相关岩溶等,其横向分布受古剥蚀地貌高地的控制,纵向上受潜水面的控制具有分带性特征;对热储起建设性的成岩作用主要有溶蚀作用、构造破裂作用等;本区雾迷山组热储井口水温多在50℃~ 60℃、热水出水量多在80 ~ 120 m3/h、矿化度多在l 900~3 100 mg/L之间.主要来自太行山麓的大气降水经断裂及不整合运移至研究区凸起、古潜山等正向构造单元的中-上元古界碳酸盐岩地层有利沉积相带处,在运移和储集过程中经正常热流背景下的深部来源的热持续加热,在凸起、古潜山等正向构造单元处特别是断裂发育带聚集成藏,形成具有勘探开发价值的地热田. 展开更多
关键词 地热 雄安新区 影响因素 成藏模式 岩溶热储 容城凸起 冀中坳陷
Present Terrestrial Heat Flow Measurements of the Geothermal Fields in the Chagan Sag of the YingenEjinaqi Basin,Inner Mongolia,China 预览
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作者 FENG Renpeng ZUO Yinhui +4 位作者 YANG Meihua ZHANG Jiong LIU Zhi ZHOU Yongshui HAO Qingqing 《地质学报:英文版》 SCIE CAS CSCD 2019年第2期283-296,共14页
Owing to the lack o f terrestrial heat flow data, studying lithospheric thermal structure and geodynamics of the Yingen-Ejinaqi Basin in Inner Mongolia is limited. In this paper, the terrestrial heat flow o f the Chag... Owing to the lack o f terrestrial heat flow data, studying lithospheric thermal structure and geodynamics of the Yingen-Ejinaqi Basin in Inner Mongolia is limited. In this paper, the terrestrial heat flow o f the Chagan sag in the YingenEjinaqi Basin were calculated by 193 system steady-state temperature measurements of 4 wells, and newly measuring 62 rock thermal conductivity and 20 heat production rate data on basis o f the original 107 rock thermal conductivity and 70 heat production data. The results show that the average thermal conductivity and heat production rate are 2.11 ±0.28 W/(m.K) and2.42±0.25 nW/m~3 in the Lower Cretaceous o f the Chagan sag. The average geothermal gradient from the Lower Suhongtu 2 Formation to the Suhongtu 1 Fonnation is 37.6 °C/km, and that o f the Bayingebi 2 Formation is 27.4 °C/km. Meanwhile, the average terrestrial heat flow in the Chagan sag is 70.6 mW/m~2. On the above results, it is clear that there is an obvious negative correlation between the thermal conductivity o f the stratum and its geothermal gradient. Moreover, it reveals that there is a geothermal state between tectonically stable and active areas. This work may provide geothermal parameters for further research o f lithospheric thermal structure and geodynamics in the Chagan sag. 展开更多
关键词 thermophysical parameters GEOTHERMAL gradient TERRESTRIAL heat flow CHAGAN SAG Yingen-Ejinaqi BASIN
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