摘要
为减少煤炭资源浪费,色连二矿12404工作面回风巷首次采用小煤柱沿空掘巷布置,通过数值模拟以及回采期间巷道围岩变形量和围岩应力监测,判断受工作面采动影响时巷道围岩变形规律以及超前动压影响范围,同时与12403工作面回风巷受采动影响变形情况进行技术比较。验证了小煤柱沿空掘巷及支护参数在色连二矿可行性及适用性,并且为同等地质条件下小煤柱沿空掘巷的使用提供理论依据及技术支撑。
In order to reduce the waste of coal resources,the return airway of No.12404 working face of Selian No.2 Coal Mine adopts small coal pillars gob-side entry driving.Through numerical simulation and monitoring of surrounding rock deformation and stress during mining,the surrounding rock deformation law and the advance influence range of the mining face are studied,and the deformation is compared with the deformation of the return airway of the 12403 working face affected by mining.It verifies the feasibility and applicability of gob-side entry driving,and the support parameters in Selian No.2 Mine,and provides theoretical basis and technical support for the use of small coal pillar gob-side entry driving under similar geological conditions.
作者
王欢
杨春鹤
檀小胜
WANG Huan;YANG Chun-he;TAN Xiao-sheng(Ordos Zhongbei Coal Chemical Co.,Ltd.,Ordos 017000,China)
出处
《煤炭工程》
北大核心
2020年第S01期53-57,共5页
Coal Engineering
关键词
沿空掘巷
采动影响
围岩控制
矿压观测
gob-side entry driving
mining influence
surrounding rock control
mine pressure observation
