北岭煤矿地应力测量及其特征分析  

Measurement and characteristic analysis of shallow in-situ stress in Beiling Coal Mine

作　　者：阎海鹏[1] 史鹏翔[1] 唐治[1] 朱丽媛[1] 

机构地区：[1]辽宁工程技术大学力学与工程学院,辽宁阜新123000

出　　处：《工程勘察》2013年第2期5-8,共4页Geotechnical Investigation & Surveying

基　　金：国家重点基础研究发展计划(973计划)(2010CB226803)

摘　　要：为弄清北岭煤矿浅部应力状态及分布特征,采用空心包体应力解除法进行地应力测量。结果表明:该区的地应力以水平构造应力为主,且均为压应力;最大主应力位于近水平方向,为近东西向;各测点均有两个主应力接近水平方向,另一个主应力接近垂直方向,垂直主应力值基本等于自重应力;位于近水平面内的两个主应力值相差较大,三个测点近水平面内的两个主应力的比值分别为1.83、1.88、1.84;在同一平面内,地应力的大小和方向没有出现突变现象,说明矿区的地应力场比较均匀。此次地应力测量为矿区进行围岩稳定性分析及开挖设计科学化提供了理论依据。In order to reveal the state and distribution of shallow stresses in the Beiling Coal Mine, the in- situ stresses was measured by the hollow inclusion stress-relief method. Some conclusions are drawn as follows： the in-situ stress of this mine is dominated by horizontal tectonic stress, and all of them are compressive stress. The orientation of maximum principal stress located on the close to horizontal direction, which is close to west-east; The direction of two principal stresses at every survey point is close to horizontal, and another is close to vertical. The vertical principal stress is basically equal to the stress caused by self gravity; The deference of two principal stresses close to horizontal plane is larger, and the ratio of them at three survey points is 1.83, 1.88, 1.84, respectively. There are no abrupt changes of the size and orientation of in-situ stress in the same plane, which demonstrates that the in-situ stress of this mine is relatively uniform. The in-situ stresses measurement provides theory basis for analysis of surrounding rock stability scientific excavation design.

关 键 词：岩石力学 地应力测量 应力解除法 

分 类 号：TU823.86[建筑科学]