摘要
针对18104运输顺槽掘进至480 m处巷道顶板出现严重破碎、下沉现象,导致巷道掘进速度慢、支护难度大等技术难题,王家岭煤矿通过技术研究,合理分析了原支护工艺主要存在的问题,并根据巷道掘进现状,对巷道应力区顶板原支护进行优化,提出了“注浆+柔性梯形梁吊棚”联合加强支护技术。通过实际应用效果来看,采取联合支护技术后,巷道后期过应力区期间顶板未出现严重破碎及冒漏现象,顶板下沉量控制在0.13 m以下,巷道掘进速度提高至6.2 m/d,取得了显著应用成效。
In view of the technical problems such as the serious crushing and sinking of the roof plate of the roadway at 480 m in the18104 transport chute, which leads to slow roadway excavation speed and difficult support, Wangjialing coal mine analyzed the main problems of the original support technology through technical research, and optimized the original support of the roof plate in the stress zone of the roadway according to the current situation of roadway excavation, and proposed the The joint support technology of "grouting +flexible trapezoidal beam hanging shed" was proposed. Through the practical application effect, after taking the joint support technology, the top plate did not appear serious crushing and leakage phenomenon during the later period of the roadway over the stress zone, the top plate sinking amount was controlled below 0.13 m, and the roadway digging speed was increased to 6.2 m/d, which achieved significant application effect.
作者
李溪枝
Li Xizhi(Jinneng Holding Coal Group Xinzhou Co.,Ltd.,Xinzhou Shanxi 034000)
出处
《机械管理开发》
2022年第8期81-82,87,共3页
Mechanical Management and Development
关键词
复合顶板
应力区
联合支护
下沉量
掘进速度
composite roof
stress zone
joint support
sinkage
tunneling speed
