摘要
针对金辛达煤矿“110”工法沿空留巷巷道围岩变形严重问题,以203工作面胶带顺槽为背景,采用钻孔窥视、取芯测试等方法,分析了薄煤层沿空留巷围岩变形机理,确定了薄煤层沿空留巷支护主要控制点为顶板浅部变形与底鼓变形;因此,设计了针对性巷道支护方案。实行新的支护方案后,掘进期间巷道围岩变形检测结果表明,顶底板移近量最大为95mm,两帮移近量最大为135mm,围岩变形均在可控范围内。
Aiming at the serious deformation problem of the surrounding rock in"110"construction method of gob-side entry roadway of Jinxinda Colliery,taking the 203 working face belt entry as the background,the article analyzes the deformation mechanism of the surrounding rock in gob-side entry retaining of the thin coal seam using methods such as drilling observation and core testing,determines the main control points for the support of the gob-side entry retaining of the thin coal seam are roof shallow deformation and floor deformation,and designs a targeted roadway support plan,whose application results show that the maximum convergence of the roof and floor is 95 mm,the maximum convergence of the two sides is 135 mm,and the deformation of the surrounding rock is within a controllable range.
作者
王伟伟
Wang Weiwei(Ximing Colliery,Shanxi Xishan Coal and Electricity Co.,Ltd.,Taiyuan,Shanxi 030052)
出处
《江西煤炭科技》
2024年第2期34-36,40,共4页
Jiangxi Coal Science & Technology
关键词
沿空留巷
底鼓变形
支护设计
钻孔窥视
gob-side entry retaining
floor heave deformation
supporting design
borehole spy
作者简介
王伟伟(1984-),男,河北景县人,2022年毕业于武汉理工大学采矿工程专业,研究方向:煤矿安全管理。
