... 上覆岩层重量 overburden weight 上覆岩层应力 overburden stress 上覆岩层结构 overburden structure ...
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net overburden stress 上覆岩层净应力
The results show that vertical stress is equal to overburden stress at shallow level. Maximum principal stress is sub horizontal stress in the NE direction.
结果表明：显德汪煤矿垂直应力近似等于上覆岩层的自重应力，最大主应力为北东方向，且为近水平压应力。
The Overburden of tunnel construction is increasing recently. Rocks in the depths have high strength and high stress condition.
隧道工程开挖深度有逐渐增加的趋势，深部岩石具高强度及高应力环境。
Abstract: Mining stress appears singularity under the influence of faults of hard thick overburden.
摘要硬厚覆岩断层影响下采动应力出现奇异性。
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