Analysis on variation characteristics of geothermal response in Liaoning Province

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2017-12-01 DOI:10.26599/jgse.2017.9280033

Wei Zhu, W. Tang, Qiang Liu, Meiqiu Zhang

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Abstract

: Due to energy shortage and increasing environmental awareness, resources in shallow underground space have been rapidly exploited and utilized. So that studying variation characteristics of geothermal response in gneiss is necessary for effective and rational use of underground heat. Based on field test of thermal response in gneiss under hydrogeological survey project carried out in shallow geothermal energy development zone in Liaoning Province, this thesis analyzes mathematical statistics of geothermal response characteristics in main gneiss of Laoning Province. The initial formation temperature ranges from 10.80 ℃ to 15.80 ℃ according to field test. The statistical results show that in the condition of natural water content, the average thermal conductivity of Quaternary loose rocks comes as clay< silty< silty fine sand< medium sand< coarse sand< gravelly sand. This order is consistent with thermal conductivity characteristics of gneiss obtained in the laboratory. Formation temperature recovery in different strata follows as granite> medium sand> clay. This order is opposite to the absolute value of temperature recovery curve slope of corresponding lithology, which shows that the stratum with higher temperature recovery rate has lower temperature recovery curve slope.

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辽宁省地热响应变化特征分析

：由于能源短缺和环保意识的提高，浅层地下空间的资源得到了迅速的开发和利用。因此，研究片麻岩地热响应的变化特征，对于有效、合理地利用地下热量是必要的。本文在辽宁省浅层地热能开发区水文地质调查项目的片麻岩热响应现场试验的基础上，对辽宁省主要片麻岩的热响应特征进行了数理统计分析。根据现场测试，初始地层温度在10.80℃至15.80℃之间。统计结果表明，在天然含水量条件下，第四系松散岩石的平均导热系数为粘土<粉土<粉细砂<中砂<粗砂<砾砂。该顺序与实验室获得的片麻岩的导热特性一致。不同地层的地层温度恢复规律为：花岗岩>中砂>粘土。该顺序与相应岩性的温度恢复曲线斜率的绝对值相反，表明温度恢复率越高的地层，温度恢复曲线的斜率越低。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.