中文摘要：

基于Westergaard应力函数求解采场端部应力分量的基础,考虑水平构造应力的影响,对应力函数进行修正,求解出最大最小主应力,并对修正前后的最大主应力进行比较分析。结果表明：平面应力状态下,由于构造应力的作用,最大主应力在与煤壁呈一定角度的位置应力集中明显,且沿煤壁水平方向出现一定程度的应力增大,而采空区方向应力卸压程度略微增大。因此,水平构造应力小于远场垂直应力的情况下,采场端部沿煤壁方向一定程度的应力增加,增大了底板破坏深度,使得煤层底板突水的危险性相应增加,为底板突水预测研究提供一定的依据。

英文摘要：

By considering horizontal tectonic stress influence,modified Westergaard stress function was used to solving maximum and minimum principal stress,and maximum principal stress was compared with that from former function. Result showed that at planestress state,maximum principal stress concentration was obvious at the location where it crossed coal-wall with some angle. Stress rose along horizontal direction,and stress relief degree slightly increased along gob. Therefore,when horizontal tectonic stress was minor than far-field vertical stress,stress of mining-field end increased and resulted into floor failure,which made danger of floor water-burst increased.