中文摘要：

以采用库仑剪切模型的接触面单元代表断层两盘的接触状态，模拟工作面从断层上盘和下盘向断层方向逐步回采的过程，研究断层接触面上法向应力和剪切应力的时空演化规律、断层上下盘的运动规律．模拟发现：在工作面回采的过程中，断层带上的应力分布具有明显的时空特征，断层上法向应力和剪切应力对采动影响具有不同的敏感性，断层法向应力的变化总是早于剪切应力；工作面距离断层越近，断层越易于活化，上盘推进时，断层影响范围约为断层前方60m，下盘推进时，工作面与断层距离小于20m时断层最易出现活化；不同的回采方式会引起断层不同的活化危险性，相比上盘开采，下盘开采时采动对断层的影响范围更为集中，活化危险性更高．

英文摘要：

Simulations of the stopping process at the face along the hanging wall and the foot wall in the presence of an included fault were respectively done. An interface element with a Coulomb shear model was used to model the interface at the fault. The development of normal and shear stresses at the fault were determined. Movement of the hanging and foot walls and the distribution of abutment pressure in the face coal were estimated. The stress distribution in the fault zone has obvious spatial-temporal features that appear during stoping. Normal stresses show a different sensitivity to mining than do the shear stresses. Normal stress always changed sooner than the shear stress. The fault was more likely to be activated the closer to the face it was located. Different stoping methods would lead to different likelihoods of fault activation. Compared to mining on the hanging wall, mining on the foot wall shows a relatively small affect on the fault. But in the latter case the ratio between shear and normal stresses was larger and fault activation was more likely.