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随着地下工程建设的发展,深部围岩力学性能及其稳定性研究显得尤为必要。取岩芯于某煤矿深部巷道,根据该矿巷道地下水的化学成份配制了化学溶液,以模拟深部地下工程的地下环境,将岩石试件置于上述化学溶液中养护60 d然后开展细观试验。试验结果表明深部地下水的化学腐蚀将降低岩石的强度,尤其对于层理发育的损伤岩体;高强岩石破坏过程非常短暂,破坏形式具有岩爆的倾向性。
With the development of underground engineering construction, it is necessary to study the mechanical properties and stability of deep surrounding rock. Taking the core in a deep mine roadway of a coal mine, a chemical solution was prepared according to the chemical composition of groundwater in the mine roadway to simulate the underground environment of a deep underground project. The rock specimen was placed in the chemical solution for 60 days and then subjected to a meso-scale test. Experimental results show that the chemical corrosion of deep groundwater will reduce the strength of rock, especially for the stratified development of damaged rock mass. The failure process of high-strength rock is very short, and the failure mode has the tendency of rock burst.