摘要
为了掌握深埋大采高综放采场超前支承压力分布规律,以康北矿101工作面为工程背景,采用理论分析、数值模拟和现场实测相结合进行研究,分析了随着工作面推进在不同采高和不同采深情况下超前支承压力应力集中系数、峰值距煤壁距离和影响范围分布规律。结果表明:随着采高或采深的增加,超前支承压力应力集中系数变化不明显、峰值距煤壁距离和影响范围变大。
In order to grasp the distribution law of the advance abutment pressure in deep full-mechanized caving face with large mining height,taking No.101 working face of Kangbei Mine as engineering background,theoretical analysis,numerical simulation and field measurement were used to study.With the advance of working face,the stress concentration coefficients of advance abutment pressure,the distance between pressure peak and coal wall,distribution law of influence range in the conditions of different mining height and depth were analyzed.The results showed that with the increase of mining height and depth,the stress concentration coefficients of advance abutment pressure increased slowly,but the distance and the influence range became larger.
出处
《中国煤炭》
北大核心
2015年第8期45-48,107,共5页
China Coal
基金
国家自然科学基金煤炭联合基金重点项目(U1361209)
中国矿业大学(北京)大学生创新训练计划项目(201411413004)
关键词
综放工作面
深埋深大采高
超前支承压力
应力集中系数
数值模拟
fully mechanized caving face
deep burial depth and large mining height
advance abutment pressure
stress concentration coefficien
