IN-SITU STRESS MEASUREMENT AND ITS DISTRIBUTION LAW IN THE TANGKOU DEEP MINE
There are three mine shafts over a thousand meter deep at Tangkou mine. At present, drifts at the mine site are strongly deformed and severely damaged by deep mining. In order to study the stress state in deep mining and design effective rock support for coal roadways, in-situ stress measurement was carried out in the middle coal roadway at the -1030m level. In this measurement, the technique of improved hollow inclusion cells was adopted which can accomplish complete temperature compensation. From the measurement, three-dimensional stresses at three measuring points were obtained, and a distribution model of in-situ stress was established. The in-situ stress distribution law of Tangkou Mine was analyzed. The measurement results show that at the depth of 1000m, the maximum principal stress is about 30 MPa, and the stress field is mostly self-weight induced. In local fields, the stress slates are governed by the horizontal stress induced by geological structures.
JIAN-JUN WEI HOU-QUAN ZHANG JIAN-JUN WEI
State Key Laboratory for Geomechanics and Deep Underground Engineering, School of Architecture and C Department of Civil Engineering, Xuzhou Institute of Architectural Technology Xuzhou, 221116, China
国际会议
The 7th International Symposium on Rockburst and Seismicity in Mines(2009年第七届国际岩爆与微振动性学术研讨会)
大连
英文
1067-1072
2009-08-21（万方平台首次上网日期，不代表论文的发表时间）