New development of in-situ stress measurement in Chinese mines
The correct knowledge of in-situ stress state is necessary for mining design, construction and excavation, especially in 6 aspects. Stress relief by overcoring technique with hollow inclusion strain cell is mainly used for in-situ stress measurement in Chinese mines, during which a series of new improving techniques have been developed for increasing reliability and accuracy of the measurement. The results and applications of in situ stress measurement in 6 metal mines are introduced. Hydraulic fracturing technique is used for stress measurement in the early exploration stage of the mines. To solve problems caused by great measuring depth and complicated geological condition of the mines, some improvements on hydraulic fracturing equipment have been made and successfully used at more than 1000 m depth.
M. Cai L. Qiao C. Li H. Ji Z. Tan F. Ren H. Peng
School of Civil and Environmental Engineering, University of Science and Technology Beijing, Beijing Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing, China
国际会议
The Fifth International Symposium on In-situ Rock Stress(第五届国际岩石应力研讨会)
北京
英文
135-142
2010-08-25（万方平台首次上网日期，不代表论文的发表时间）