摘要
针对某矿2501首采工作面埋深大、应力集中、来压规律无参考等问题,通过相似模拟试验和现场支架阻力监测数据,研究2501首采工作面的矿压显现规律。结果表明:2501首采工作面液压支架的初撑力判据为28.81 MPa,循环末阻力判据平均值为36.59 MPa,初次来压时液压支架动载系数最大值为1.341,平均值为1.280,周期来压时液压支架动载系数最大值为1.386,平均值为1.288;工作面周期来压步距为17.85~22.25 m,超前应力集中在工作面前方30~40 m范围内,且超前应力峰值位于工作面前方5~10 m范围内。该研究结果可为该矿的后续开采提供理论参考。
This paper is directed at addressing the problems,such as the large buried depth,stress concentration and no reference for the pressure regulation,as occurs in 2501 first mining face in a mine.The study investigates the law behind mine pressure behavior in 2501 first mining face by the similar test simulation and the field support resistance monitoring data.The results show that the initial supporting force criterion of the hydraulic support in the first mining face of 2501 is 28.81 MPa,and the average value of the resistance criterion at the end of the cycle is 36.59 MPa.The maximum dynamic load coefficient of the hydraulic support is 1.341,and the average value is 1.280 when the pressure is first applied;and the maximum dynamic load coefficient of the hydraulic support is 1.386 and the average value is 1.288 when the pressure is applied periodically.The pressing step interval of the working face is 17.85-22.25 m,the leading stress is concentrated in the range of 30-40 m in front of the working face,and the leading stress peak is in the range of 5-10 m in front of the working face.The results of this study can provide theoretical reference for the subsequent mining of this mine.
作者
肖福坤
孟鑫
张序飞
谢锴
单磊
Xiao Fukun;Meng Xin;Zhang Xufei;Xie Kai;Shan Lei(School of Mining Engineering,Heilongjiang University of Science&Technology,Harbin 150022,China)
出处
《黑龙江科技大学学报》
2025年第1期14-19,共6页
Journal of Heilongjiang University of Science And Technology
基金
黑龙江省自然科学基金项目(ZD2021E006)。
关键词
深部矿井
首采工作面
矿压显现规律
deep mine
first mining face
mine pressure appearance law
