山东煤炭科技2024，Vol.42Issue(7)：23-28,6.DOI:10.3969/j.issn.1005-2801.2024.07.005
综放孤岛工作面过空巷安全技术研究
Research on Safety Technology for Fully Mechanized Caving Isolated Island Working Face Passing through Empty Roadway
潘瑞 1徐大龙 2顾伟2
作者信息
- 1. 山西晋煤集团沁秀煤业有限公司岳城煤矿,山西 沁水 048200
- 2. 中国矿业大学煤炭资源与安全开采国家重点实验室,江苏 徐州 221116
- 折叠
摘要
Abstract
In view of the technical difficulties of passing through empty roadways faced by the coal pillar recovery working face in the main roadway of Yuecheng Mine during the stoping process,problmes such as high roof pressure,severe roof caving and others will happen inner empty roadways,which affect the normal stoping of the working face,taking the coal pillar recovery working face in the main roadway of Yuecheng Coal Mine as the research background,through theoretical calculation,it is concluded that the support strength of the empty roadway should be greater than 6.03 MPa.Numerical simulation is used to analyze the roof stress and displacement of the roadway under different support strengths,and it is determined that when the support strength of the roof reaches 7 MPa or above,the subsidence amount of the empty roadway roof can be controlled within a reasonable range.The support of the empty roadway adopts wooden stacks,and numerical simulation is used to analyze the roof stress and displacement of the empty roadway under different support row spacings.It is determined that selecting interlocking wooden stacks with a row spacing of 0.7 m and 1.5 m×3 m×3 m can meet the support requirements of the fully mechanized caving face passing through the empty roadway section.The on-site mine pressure monitoring results show that when the support strength of the roof of the empty roadway reaches 7 MPa or above,it can meet the safety production requirements of the working face and achieve safe and efficient stoping of the coal pillar recovery working face in the main roadway of Yuecheng Mine.关键词
孤岛工作面/过空巷/木垛支护/数值模拟/矿压监测Key words
isolated island working face/passing through empty roadway/wooden stack support/numerical simulation/mine pressure monitoring分类
矿山工程引用本文复制引用
潘瑞,徐大龙,顾伟..综放孤岛工作面过空巷安全技术研究[J].山东煤炭科技,2024,42(7):23-28,6.
