{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,12,31]],"date-time":"2025-12-31T08:15:23Z","timestamp":1767168923066,"version":"build-2238731810"},"reference-count":22,"publisher":"Wiley","license":[{"start":{"date-parts":[[2023,7,7]],"date-time":"2023-07-07T00:00:00Z","timestamp":1688688000000},"content-version":"unspecified","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Journal of Environmental and Public Health"],"published-print":{"date-parts":[[2023,7,7]]},"abstract":"<jats:p>As a rock mass with shallow burial, high temperature, and large-scale development, the study of its mechanical and seepage characteristics plays an important role in the efficient development of geothermal energy. With the development of geothermal energy in China, a breakthrough has been made in the exploration of dry-hot rocks, and the realization of efficient development of dry-hot rocks has become the focus of attention. Systematic research on rock mechanics and seepage characteristics of dry-hot rocks has become a key research topic. Granite is the most typical dry-hot rock. In this paper, granite in the Qinghai area is selected as the research object, and experiments on physical characteristics, mechanical parameters, and seepage characteristics of granite are carried out to study the effects of different depths and temperatures on mechanical parameters and seepage characteristics of granite. The results show that the physical parameters of granite in Qinghai do not change obviously with the increase of depth, and granite has the characteristics of low water absorption and low porosity. At the same time, the parameters of water absorption and porosity at different depths are close, and the dispersion is small, so the rocks are very dense. The rocks have relatively high P-wave velocity and low S-wave velocity, and the elastic wave velocity changes little at different depths. With the increase of confining pressure, the strength of granite rock increases. Under different confining pressures, the rock shows brittle failure characteristics after the peak stress. According to Hoek\u2013Brown and Mohr\u2013Coulomb strength curves, the strength value is 173.52\u2009MPa. After high temperature treatment, a complex fracture network is formed in the granite. With the increase of temperature, the permeability and porosity of the granite increase continuously, and 500\u00b0C is the temperature threshold. When the temperature is lower than 300\u00b0C and the stress is less than 30\u2009MPa, the granite has negative Poisson\u2019s ratio, and the permeability and effective stress of dry-hot rocks are piecewise linear functions. The research results provide theoretical guidance for fracturing of dry-hot rocks and exploitation of geothermal energy.<\/jats:p>","DOI":"10.1155\/2023\/5298404","type":"journal-article","created":{"date-parts":[[2023,7,7]],"date-time":"2023-07-07T19:20:08Z","timestamp":1688757608000},"page":"1-7","source":"Crossref","is-referenced-by-count":2,"title":["Mechanical Characteristics and Permeability Characteristics of Dry-Hot Rock Mass"],"prefix":"10.1155","volume":"2023","author":[{"given":"Dong","family":"Yang","sequence":"first","affiliation":[{"name":"Downhole Services Company, CNPC Bohai Drilling Engineering Company Limited, Renqiu 062552, Hebei, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Changsong","family":"Lu","sequence":"additional","affiliation":[{"name":"Downhole Services Company, CNPC Bohai Drilling Engineering Company Limited, Renqiu 062552, Hebei, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Wuqing","family":"Wen","sequence":"additional","affiliation":[{"name":"Downhole Services Company, CNPC Bohai Drilling Engineering Company Limited, Renqiu 062552, Hebei, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4080-8373","authenticated-orcid":true,"given":"Hanlie","family":"Cheng","sequence":"additional","affiliation":[{"name":"School of Energy Resource, China University of Geosciences, Beijing 434000, China"},{"name":"COSL-EXPRO Testing Services (Tianjin) Co. 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