摘要
为解决厚煤层采空区密闭墙受压开裂,煤柱破碎引起采空区瓦斯泄漏难题,运用FLAC3D软件模拟厚煤层采空区联络横川密闭墙构筑关键参数影响,分析密闭墙构筑位置及墙体厚度对采空区密闭效果影响,确定合理的密闭墙构筑参数。研究表明在长度为30 m的联络横川内密闭墙的最佳构筑位置在距顺槽巷口0~6 m内,密闭墙合理厚度为2 m。
In order to solve the problem that the airproof wall in thick coal seams cracked under the pressure,coal pillar broken give rise to gas leakage in goaf,using FLAC3 Dsoftware to carry out numerical simulation of contact lane sealing wall in thick coal seam,study the impact of sealing effect in goaf about the construction position and thickness of closed wall,determine the rational construction parameters of airproof wall. Studies have shown that,when contact length is 30 m,the best position is 0 to 6 m far away from the gateway to the gateway,reasonable airproof wall thickness is 2 m.
作者
张飞
ZHANG Fei(Technology Research Institute of Jincheng Anthracite Mining Group,Jincheng 048006,China)
出处
《煤炭技术》
CAS
2020年第7期114-117,共4页
Coal Technology
关键词
密闭墙
构筑位置
密闭墙厚度
数值模拟
airproof wall
construction position
thickness of closed wall thickness
numerical simulation
