New development of hydraulic fracturing technique for in-situ stress measurement at great depth of mines |
| |
| Authors: | Meifeng Cai Hua Peng Hongguang Ji School of Civil Environmental Engineering University of Science Technology Beijing Beijing China Research Institute of Geomechanics Beijing China |
| |
| Affiliation: | [1]School of Civil and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China [2]Research Institute of Geomechanics, Beijing 100080, China |
| |
| Abstract: | In-situ stress measurement using the hydraulic fracturing technique was made at Wanfu Coal Mine in Shandong Province,China.To solve problems caused by great measuring depth and extra thick overburden soil layers in the mine,a series of improved techniques were developed for the traditional hydraulic fracturing technique and equipment to increase their pressure-enduring ability and to ensure safe and flexible removal of the sealing packers with other experimental apparatus.Successful in-situ stress measurement at 37 points within 7 boreholes,which were mostly over 1000 m deep,was completed.Through the measurement,detailed in |
| |
| Keywords: | hydraulic fracturing in-situ stress measurement coal mine measuring depth |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
