白皎矿区岩体应力场研究
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摘要
本文介绍了白皎矿区岩体应力场的现场研究方法：孔径应力解除法。两个点六个钻孔空间应力测量结果表明：矿区内岩体应力以近水平构造应力为主。文章还进行了一个剖面的线弹性有限元分析，在两个有实验数据对比的地方反演分析与实测结果基本相符。有限元反演分析勾画出了矿区岩体应力场的整体轮廓。岩体应力场研究结果对矿区地压控制有重要的指导作用。
The paper introduces the method of destressing aborehole radially for researching the rock mass stress fieldat site.Measurement of the spatial stress surrounding sixboreholes at two points shows that the rock mass stresses atthat mining district are mainly near horizontally structuralstresses.A linear elastic finite element analysis was carriedout for a profile,whereby inverse-operations of twoplaces where practical measurements were available forcontrast were conducted;their results are basicallyconsistent to the practical measurements.The finiteelement inverse-operation analysis has sketched out the overall outline of the rock mass stress field of the miningdistrict.This result plays an important role in guiding thecontrol of ground pressure of the mining district.
The paper introduces the method of destressing aborehole radially for researching the rock mass stress fieldat site.Measurement of the spatial stress surrounding sixboreholes at two points shows that the rock mass stresses atthat mining district are mainly near horizontally structuralstresses.A linear elastic finite element analysis was carriedout for a profile,whereby inverse-operations of twoplaces where practical measurements were available forcontrast were conducted;their results are basicallyconsistent to the practical measurements.The finiteelement inverse-operation analysis has sketched out the overall outline of the rock mass stress field of the miningdistrict.This result plays an important role in guiding thecontrol of ground pressure of the mining district.
引文
1任德惠，井工开采矿山压力与控制．重庆大学出版社．1990．2国家地震局地壳应力研究所编译．地应力测量理论研究与应用．北京：地质出版社．1987．3李通林．矿山岩石力学．重庆大学出版社．1991．4苏华友．原岩应力测量及其在矿山巷道最优设计中的应用研究．硕士学位论文．重庆大学．1991．
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