山东煤炭科技2025，Vol.43Issue(2)：38-42,5.DOI:10.3969/j.issn.1005-2801.2025.02.008
区段煤柱工作面覆岩运动及矿压显现规律研究
Research on Overlying Rock Movement and Mine Pressure Behavior Law in Working Face of Section Coal Pillar
李庚 1郇恒恒1
作者信息
- 1. 河南能源焦煤集团赵固二矿,河南 焦作 454000
- 折叠
摘要
Abstract
Previously,during the stoping process of the two1 coal in Zhaogu No.2 Mine,layered mining is used and relatively wide section coal pillars are reserved.In order to improve the resource extraction rate and extend the service life of the mine,a residual coal recovery scheme is proposed to use section coal pillars as independent working faces for fully mechanized mining.Through numerical simulation and on-site industrial experiments,the overlying rock movement and mine pressure behavior law in the section coal pillar working face are analyzed.The research finds that the internal stress of section coal pillars exhibits a"saddle shaped"distribution with high on both sides and low in the middle;During the stoping period of the working face,the peak value of the advanced support stress is located 5-10 m away from the coal wall,with a significant impact range of 30-35 m;The pressure data of the hydraulic support shows that the mine pressure behavior is obvious when the coal pillar is"quadratic square",and the periodic pressure step distance during the stoping process of the section coal pillar is about 20 m.The research results indicate that the coal pillars affected by mining can still be used as independent working faces for fully mechanized mining,which verifies the feasibility of independent stoping of section coal pillars.关键词
煤柱/孤岛/综放/规律Key words
coal pillar/isolated island/fully mechanized caving/law分类
矿山工程引用本文复制引用
李庚,郇恒恒..区段煤柱工作面覆岩运动及矿压显现规律研究[J].山东煤炭科技,2025,43(2):38-42,5.
