202107

回坡底煤矿回采巷道底鼓控制技术研究
发布人:网站管理员 发布时间:2021/7/22 点击次数:102次
  

回坡底煤矿回采巷道底鼓控制技术研究
张许红
(山西汾河焦煤股份有限公司回坡底煤矿,山西 洪洞 041600)
摘要: 针对回坡底煤矿10501 工作面回采过程中巷道底鼓现象严重的情况,对岩层底板进行了承载力和位移量计算。
计算结果显示,巷道底板岩层的承载力为28 900 kN,远大于岩层的最大承载力26 970 kN。为此,采用了“帮部补强锚
索+底板注浆锚杆+底角锚杆”耦合加强支护方案进行了加强支护。优化支护方案下最大底鼓量为88 mm,达到了支护要
求,满足安全生产需求。
关键词: 巷道底鼓;承载力;耦合加强支护方案
中图分类号: TD322     文献标识码: A     文章编号: 2095-0802-(2021)07-0058-02
Study on Control Technology of Floor Heave in Mining Roadway of Huipodi Coal Mine
ZHANG Xuhong
(Huipodi Coal Mine, Fenhe Coking Coal Co., Ltd. of Shanxi, Hongtong 041600, Shanxi, China)
Abstract: In view of the situation of the serious floor heave of the roadway in the mining process of the 10501 working face of
Huipodi Coal Mine, this paper calculated the bearing capacity and displacement of the rock floor. The calculation results showed
that the bearing capacity of the rock layer of the roadway floor was 28 900 kN, which was far greater than the maximum bearing
capacity of the rock layer of 26 970 kN. For this reason, the coupling reinforcement support scheme of "reinforced anchor cable at
the side + grouting anchor rod of the floor + anchor rod at the bottom corner" was adopted to strengthen the support. The maximum
bottom heave volume under the optimized support scheme was 88 mm, which met the support requirements and met the needs of
safe production.

Key words: roadway floor heave; bearing capacity; coupling reinforcement support scheme