202310

新庄煤矿高地应力煤岩大断面巷道支护技术研究
发布人:网站管理员 发布时间:2023/11/7 点击次数:13次
  

新庄煤矿高地应力煤岩大断面巷道支护技术研究
邹青海1,刘扬2,张辉2
(1.庆阳新庄煤业有限公司,甘肃 庆阳 745000;2.煤矿安全技术国家重点实验室(中煤科工集团沈阳研究院有限公司),
辽宁 抚顺 113122)
摘要: 为解决新庄煤矿高地应力大断面巷道围岩变形剧烈的问题,基于高预应力强力支护技术,提出了高预应力强
力锚杆支护理论和设计原则,数值模拟了拱形巷道预应力分布特征及不同排距对预应力场的影响,并对运输大巷试验段
进行了矿压监测与分析,得出高预应力锚杆支护技术顶板离层小袁稳定性良好。研究为巷道支护参数优化提供了一定的
理论依据,可以有效保障高地应力大断面巷道的稳定性。
关键词: 大断面巷道;大埋深;高地应力;锚杆支护;围岩应力
中图分类号: TD353      文献标志码: A      文章编号: 2095-0802-(2023)10-0092-06
Support Technology for High Ground Stress Coal Rock Large Section Roadway in
Xinzhuang Coal Mine
ZOU Qinghai1, LIU Yang2, ZHANG Hui2
(1. Qingyang Xinzhuang Coal Industry Co., Ltd., Qingyang 745000, Gansu, China; 2. State Key Laboratory of Coal Mine Safety
Technology (CCTEG Shenyang Research Institute), Fushun 113122, Liaoning, China)
Abstract: In order to solve the severe deformation of the surrounding rock in the high stress and large section roadway of
Xinzhuang Coal Mine, based on the high pre-stressed strong support technology, the theory and design principles of high prestressed
strong anchor support were proposed. The distribution characteristics of pre-stress in the arch roadway and the impact of
different row spacing on the pre -stress field were numerically simulated. The rock pressure detection and analysis of the
experimental section of the transportation roadway showed that the high pre-stressed anchor support technology had small roof
separation and good stability. This provides a certain theoretical basis for the optimization of roadway support parameters, which
can effectively ensure the stability of the high stress and large section roadway.

Key words: large section roadway; large burial depth; high ground stress; anchor support; surrounding rock stress