摘要
为解决工作面传统“三带”高度理论计算适用性问题,以关键层理论、“S-R”失稳理论为基础,结合岩梁的变形特征,提出了一种新的工作面采空区“三带”高度判断方法,并在北辛窑煤业8406工作面使用。结果表明:8406工作面上覆岩层垮落带、断裂带、弯曲下沉带高度分别为5.03 m、22.72 m、11.31 m,由于工作面断裂带达到K3砂岩断裂含水层,因而8406工作面在回采时,顶板会发生淋水情况,此外,从当前的计算结果看,工作面的开采并未影响到地表。新的计算结果与工作面实测结果相同,研究成果对该工作面的回采具有一定的指导意义。
In order to solve the applicability problem of the traditional"three zones"height theory calculation in the working face,a new method for judging the height of the"three zones"in the gob area of the working face is proposed based on the key layer theory,the"S-R"instability theory,and the deformation characteristics of the rock beam.This method was applied in the 8406 working face of Beixinyao mining industry,and the results showed that the heights of the caving zone,fracture zone,and flexural subsidence zone of the overlying strata in the 8406 working face were 5.03 m,22.72 m,and 11.31 m,respectively.Since the fracture zone of the working face reaches the fractured aquifer of K3 sandstone,there will be water dripping from the roof during the recovery of the 8406 working face.Moreover,from the current calculation results,the mining impact has not affected the surface.The new calculation results are consistent with the actual measurement results of the working face,and the research results have certain guiding significance for the recovery of this working face.
作者
贾杰
JIA Jie(Beixinyao Mining Industry Co.,Ltd.,of Jinneng Holding Coal Industry Group,Xinzhou 036702,China)
出处
《煤》
2025年第2期30-33,共4页
Coal
关键词
采煤工作面
上覆岩层
“三带”高度
应用
coal mining face
overlying strata
"three zones"height
application
作者简介
贾杰(1986-),男,山西大同人,工程师,从事煤矿地质测量工作,E-mail:874316541@qq.com。
