摘要
针对红岭煤矿托顶煤1703上巷易出现冒顶、后期变形大、支护困难问题,给出了托顶煤巷道锚网索联合支护参数校验方法,提出了“T型钢带+顶板锚杆锚索+帮部锚索护表金属网+护表金属网”的联合支护技术及方案。该方案在红岭煤矿托顶煤1703上巷进行应用,托顶煤1703上巷两帮移近量为68 mm,顶底板移近量为57 mm,巷道围岩控制效果良好。
Aiming at the problems of roof caving,large deformation in the later stage,and difficult support in the 1703 upper roadway of supporting top coal in Hongling Coal Mine,a parameter verification method for the combined support of anchor net cable in the supporting top coal roadway is given.A combined support technology and scheme of"T-shaped steel belt+roof anchor rod anchor cable+side anchor cable protection surface metal mesh+protection surface metal mesh"is proposed.This scheme is applied in the 1703 upper roadway of supporting top coal in Hongling Coal Mine,the displacement amount of the two sides of the supporting top coal 1703 upper roadway is 68 mm,and the roof and floor is 57 mm.The surrounding rock control effect of the roadway is good.
作者
王智玉
张帅
杨恩懿
Wang Zhiyu;Zhang Shuai;Yang Enyi(Henan Energy and Chemical Group Yongmei Company Hongling Coal Mine,Henan Anyang 455100)
出处
《山东煤炭科技》
2023年第12期63-66,共4页
Shandong Coal Science and Technology
关键词
托顶煤
掘进巷道
联合支护
参数校验
supporting top coal
excavation roadway
combined support
parameter verification
