煤矿安全2017，Vol.48Issue(11)：159-162,4.DOI:10.13347/j.cnki.mkaq.2017.11.043
墩柱式沿空留巷方法在软弱顶板煤层中的应用
Application of Pier Column Gob-side Entry Retaining Roadway in Weak Roof Coal Seam
朱怀志 1王苗 2徐朋伟 1黄成军1
作者信息
- 1. 滕州市金达煤炭有限责任公司,山东滕州277500
- 2. 青岛市黄岛区安全生产监管执法局,山东青岛266500
- 折叠
摘要
Abstract
In order to improve the recovery rate of coal seam in the thin roof of Dongda Coal Mine and extend the mining time of the mining area,the feasibility of the application of pier column gob-side entry retaining technology in the mine is demonstrated from the theoretical and numerical simulation.During the period of gob-side entry retaining,vertical stress distribution characteristics,horizontal and vertical displacement characteristics are analyzed.The engineering practice shows that the pier can provide a large support resistance,which can effectively cut off the roadway stress transmission path,reduce the roadway pressure,improve the utilization rate of coal resources,and provide the engineering examples for the thin coal seam mining design.关键词
软弱顶板/沿空留巷/墩柱切顶/数值模拟/巷旁支护Key words
weak roof/gob-side entry retaining/pier top cutting/numerical simulation/roadway-side support分类
矿业与冶金引用本文复制引用
朱怀志,王苗,徐朋伟,黄成军..墩柱式沿空留巷方法在软弱顶板煤层中的应用[J].煤矿安全,2017,48(11):159-162,4.
