摘要
大倾角工作面实行智能开采前的矿压显现研究对于大倾角工作面是否可实行智能开采至关重要。以杨柳煤矿1031工作面为背景,通过相似模拟试验对工作面开采中超前支承压力、覆岩运移规律等情况进行分析。结果表明:工作面分类综合评测结果为79.8分,工作面条件综合评价为Ⅱ类,可以实行智能化开采。覆岩下沉垮落形状呈非对称拱形,下沉量最大位置处在水平方向位移为1.72 m,在垂直方向位移为3.24 m。在开采时,应力峰值范围为18~23 MPa,当工作面推进至测点正上方时,应力为6~8 MPa,现场实测表明,可以实现工作面的正常安全开采。
The study of mine pressure behavior before intelligent mining of working face with large dip angle is very important for intelligent mining in large dip face.Taking the 1031 working face of Yangliu Coal Mine as the background,the intelligent mining conditions of 1031 working face were studied through the Classification and Grading Technical Conditions and Evaluation Index System of Intelligent Coal Mining Working Face,and the advance bearing pressure and overburden movement law in the mining of working face were analyzed through similar simulation tests.The results show that the comprehensive evaluation result of working face classification is 79.8 points,and the comprehensive evaluation of working face conditions is gradeⅡ,which can implement intelligent mining.The subsidence and collapse of the overburden is in an asymmetric arch shape.The position of the maximum subsidence is 1.72 m in the horizontal direction and 3.24 m in the vertical direction.During mining,the peak stress range is 18~23 MPa.When the working face is advanced directly above the measuring point,the stress is 6~8 MPa.The field measurement shows that the normal and safe mining of the working face can be realized.
作者
刘程
李志华
杨科
池小楼
周鹏
赵士虎
LIU Cheng;LI Zhihua;YANG Ke;CHI Xiaoloul;ZHOU Pengl;ZHAO Shihu(Key Laboratory of Safety and Highe-fficiency Coal Mining Ministry of Education,Anhui University of Science and Technology,Huainan,Anbui 232001,China;School of Mining Engineering,Anbui University of Science and Technology,Huainan,Anhui 232001,China;Yangliu Coal Mine,Huaibei Coal Mining Group,Huaibei,Anhui 235000,China)
出处
《矿业研究与开发》
CAS
北大核心
2022年第7期86-91,共6页
Mining Research and Development
基金
国家重点研发计划项目(2019YFC1904304)
国家自然科学基金青年基金资助项目(51604008)
合肥综合性国家科学中心能源研究院(安徽省能源实验室)项目(19KZS203)。
关键词
智能开采
大倾角煤层
矿压显现
相似模拟
Intelligent mining
Coal seam with large dip angle
Mine pressure behavior
Similarity simulation
