The Study on Ground Stress Measurement and the Stress Distribution Rule on E-W both Sides of Fault F17 of Ore Body Ⅱ in Jingchuan Orefield

摘要：

The comprehensive study results of variation rule of the stress in the orefield following the measurement depth had been done by mainly put forward the ground stress measurement of level 1200m, 1150m and 1000m of ore body II in Jinchuan orefield. The dimension and direction of ground stress of 16 points on E-W both sides of fault F17 are abtained by these measurements. The study result shows that the average of maximum principal stress of west fault F17 is about 25MPa, whereas that east of this fault is 20MPa. The general direction of maximum principal stress is NE-NNE, with somewhat local variation. The principal level of horizontal stress weakens progressively in the deep mining area. Nevertheless, the situation of different part of each level isnt the same as one another. The increase of difference between dimensions of maximum and minimum principal stress shows the increase of shear stress in the deep mining area and the increase of intensity of shear damage. Above the buried depth 500-600m, the maximum principal and horizontal stress shows a linear increase following the increase of depth, whereas the tendency of increase becomes gentle beneath the buried depth 500-600m.

关键词： Ground stress Measurement Jinchuan orefield Stress relieving method Distribution rule

作者: LIU Wei-dong LI Feng WU Man-lu LIAO Chun-ting

作者单位: College of Land Resource Engineering, Kunming University of Science & Technology, Kunming 650093 Jin College of Land Resource Engineering, Kunming University of Science & Technology, Kunming 650093 Geomechanics Institute, China Academy of Geosciences, Beijing

会议类型: 国际会议

会议名称: The First International Symposium on Mine Safety Science and Engineering (首届矿山安全科学与工程学术会议)

会议地点: 北京

会议语种:英文

页码: 214-221

在线出版日期: 2011-10-27（万方平台首次上网日期，不代表论文的发表时间）