Excavation in metal mine roadways in broken surrounding rocks under the effect of high pressure water gushing may lead to serious accidents.
在金属矿山破碎围岩巷道的掘进施工中同时存在高压涌水作用，可导致重大安全事故。
There are many factors which can influence the stress of surrounding rocks. Broken zone is a very important factor.
围岩应力受诸多因素的影响，松动圈是重要的影响因素之一。
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