文献类型：期刊文献

英文题名：Principle and calculation method of hydraulic fracturing technique for in-situ stress based on two arbitrary holes

作者：Dong, Hailong Jing, Wei Luo, Jun'ai Zhang, Zhengxin Jing, Laiwang Zhang, Wenli Lei, Zhen

第一作者：Dong, Hailong

通信作者：Dong, HL[1];Zhang, ZX[1];Dong, HL[2];Dong, HL[3];Dong, HL[4]

机构：[1]Guizhou Inst Technol, Sch Transportat Engn, Guiyang 550025, Peoples R China;[2]Anhui Univ Sci & Technol, Mine Mech & Support Technol Inst, Huainan 232001, Anhui, Peoples R China;[3]Guizhou Guineng Investment Joint Stock Co Ltd, Liupanshui 553000, Guizhou, Peoples R China;[4]Nanjing Jingwei Min Technol Res Inst Co Ltd, Nanjing 210003, Peoples R China

第一机构：贵州理工学院

通信机构：corresponding author), Guizhou Inst Technol, Sch Transportat Engn, Guiyang 550025, Peoples R China;corresponding author), Anhui Univ Sci & Technol, Mine Mech & Support Technol Inst, Huainan 232001, Anhui, Peoples R China;corresponding author), Guizhou Guineng Investment Joint Stock Co Ltd, Liupanshui 553000, Guizhou, Peoples R China;corresponding author), Nanjing Jingwei Min Technol Res Inst Co Ltd, Nanjing 210003, Peoples R China.|贵州理工学院;

年份：2025

卷号：15

期号：1

外文期刊名：SCIENTIFIC REPORTS

收录：;Scopus(收录号：2-s2.0-105013631865);WOS:【SCI-EXPANDED(收录号:WOS:001554407100007)】；

基金：The authors are thankful to anonymous reviewers and editors whose constructive criticisms helped in improving this manuscript. This research was supported by Guizhou science and technology agency of China(Project Approval Number: 2022ZK169), Guizhou provincial highway bureau of China (Project Approval Number: 2023QLK01), Guizhou institute of technology in China (Project Approval Number: 2023GCC40), Water Resources Bureau of Bijie City, Guizhou Province, China (Project Approval Number: KT202442).

语种：英文

外文关键词：Two arbitrary holes; In-situ stress testing; Hydraulic fracturing method; Testing principle; Calculation method

摘要：In order to precisely obtain the magnitude and orientation of in-situ stress in coal mine roadway, the principle and calculation method of hydraulic fracturing technique for in-situ stress with two arbitrary holes were established in this study. Deriving from the basic principle of the traditional hydraulic fracturing in-situ stress testing, this method, based on the basic data of in-situ stress measured from two arbitrary test holes, performed three stress equivalent transformations following the stress transformation formula in elasticity mechanics. The results suggest that all six stress values representing the stress state at a point were accurately obtained after mechanical and mathematical derivation. Furthermore, the practical application and in-situ stress calculation process of this method were introduced with the Nazuo Coal Mine in Fuyuan County, Yunnan Province of China as the engineering foundation, verifying that the testing results were relatively accurate. The proposed method has addressed the limitations of the traditional single-hole hydraulic fracturing method and mitigated the drawbacks of the three-hole hydraulic fracturing method, what is high requirements for drilling quality and is not practical. So it can be treated as a simple, accurate method for hydraulic fracturing in-situ stress testing.