结合某矿孤岛工作面工程实例,通过支架阻力监测等方法,对工作面超前支承压力的影响范围、巷道变形和上覆岩层的移动变形进行分析。结果表明:工作面超前支承压力为动态应力,集中范围6—15m;巷道变形量较小,岩层具有分层垮落的特点,基本顶用期来压不明显。
Combined with the engineering example of island coal mining face of mine,the support resistance monitoring method,the abutment pressure of the working face of the affected area, the roadway deformation of overlying strata movement and deformation analysis. The results show that: abutment pressure on working face for dynamic stress, concentration range of 6-15 m; the roadway deformation is smaller, the rock has the characteristics of layered caving, the basic roof pressure cycle is not obvious.