文献类型：期刊文献

英文题名：Characteristics of in situ stress field in the Huainan mining area, China and its control factors

作者：Shi, Xiuchang[1,5];Zhang, Jixing[2];Li, Guoqing[3,4]

第一作者：Shi, Xiuchang

通讯作者：Shi, XC[1];Shi, XC[2]

机构：[1]Henan Univ Econ & Law, Sch Engn Management & Real Estate, Zhengzhou 450046, Peoples R China;[2]Geol Survey Jiangsu Prov, Nanjing 210018, Peoples R China;[3]China Univ Geosci, Sch Earth Resources, Wuhan 430074, Hubei, Peoples R China;[4]China Energy Investment Corp Ltd, State Key Lab Water Resource Protect & Utilizat C, Beijing 100011, Peoples R China;[5]China Univ Min & Technol Beijing, Coll Geosci & Surveying Engn, Beijing 100083, Peoples R China

第一机构：河南财经政法大学工程管理与房地产学院

通讯机构：[1]corresponding author), Henan Univ Econ & Law, Sch Engn Management & Real Estate, Zhengzhou 450046, Peoples R China;[2]corresponding author), China Univ Min & Technol Beijing, Coll Geosci & Surveying Engn, Beijing 100083, Peoples R China.|[1048420]河南财经政法大学工程管理与房地产学院;[10484]河南财经政法大学;

年份：2021

卷号：80

期号：19

外文期刊名：ENVIRONMENTAL EARTH SCIENCES

收录：;EI(收录号：20220200288);Scopus(收录号：2-s2.0-85116168132);WOS:【SCI-EXPANDED(收录号:WOS:000701691700001)】；

基金：This study is supported by the National Natural Science Foundation of China (Nos. 41904118, 42072204), Henan Province Scientific and technological research project (No. 202102310218) and the Open Fund of the State Key Laboratory of Water Resource Protection and Utilization in Coal Mining (No. SHJT-17-42.8) and the Key Project of Coal-based Low-carbon Joint Research Foundation of NSFC and Shanxi Province (No. U1910204). We also thank reviewers and editors for their constructive comments and suggestions on improving the manuscript.

语种：英文

外文关键词：In situ stress; Hydraulic fracturing; Stress regime; Geological structure; Fault friction strength; Huainan mining area

摘要：Due to the high in situ stresses, dynamic disasters occurred frequently in the Huainan mining area, China. Our understanding of the in situ stresses in this area is still insufficient. In this study, the in situ stresses of 18 sections in two boreholes in the Xinji No. 1 coalfield were measured using the hydraulic fracturing method, and the distribution of in situ stresses in the Huainan mining area were investigated. The relationship between in situ stress and geological structure in the Huainan mining area was summarized and the limitation of fault friction strength on in situ stress was discussed. The result showed that the maximum horizontal principal stress (sigma(H)) at Xinji No. 1 mine was 13.95-25.23 MPa, the minimum horizontal principal stress (sigma(h)) was 12.16-21.17 MPa. The average azimuth of the maximum horizontal principal stress was N83.61 degrees E. The statistical results showed that the in situ stresses in Huainan mining area were characterized by a strike-slip faulting regime. Both the horizontal and vertical principal stresses increased approximately linearly with the increase of burial depth. The orientation of the maximum principal stress in the study area is closely related to the tectonic movement and the ratio of maximum principal stress to minimum principal stress was primarily limited by the friction strength of the faults. The outcomes of this research can provide some reliable engineering parameters and benefit the roadway layout and support design in the Huainan mining area.