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锚喷支护已在煤矿井巷工程中广泛应用。目前国内外主要是通过现场工程量测来分析锚喷支护的效果和巷道的稳定性,本文扼要介绍国外部分围岩变形量测仪表及其应用方法。 一、井巷圈岩现场量测应用实例 在岩层中掘进时,破坏了岩体的应力平衡,造成围岩岩体松动和向巷道空间的移动。岩体的位移和变形是岩石力学形态变化的结果,巷道支护的目的就是控制这种位移,防止岩石松动,促使其应力达到新的平衡,而锚喷支护巷道则是允许巷道围岩产生一定位移后,达到新的应力平衡。在施工中根
Anchor spray support has been widely used in coal mine shaft project. At present, the effect of bolting and shotcrete support and the stability of roadway are mainly analyzed by on-site engineering measurements. This paper briefly introduces the measuring instruments and application methods of some of the surrounding rock deformation measuring instruments abroad. First, the mine road rock ring rock application of field measurement Examples in the rock tunneling, destroyed the stress balance of rock mass, resulting in loose rock mass surrounding rock and roadway to move. The displacement and deformation of rock mass is the result of the change of rock mechanics. The purpose of roadway support is to control this displacement, prevent the rock from loosening, and promote the new balance of stress. Anchor and bolt support tunnel is to allow the surrounding rock of the tunnel to produce After a certain displacement, reach a new stress balance. In the construction of the root