综放工作面沿空留巷控制技术研究

Control Technology for Retaining Roadway along Goaf in Fully Mechanized Coal Caving Face

综放工作面沿空留巷是保证煤矿高效开采的重要途径之一,可以控制沿空巷道的变形。分析了综放工作面沿空巷道大变形的原因,介绍了充填沿空留巷技术,指出其关键在于控制合适的充填体宽度,结合山西省A矿具体情况,采用数值模拟方法分析了充填体宽度的影响规律。研究发现,对于A矿310综放工作面,沿空留巷充填体宽度应该控制在2.4 m左右。

One of the important ways to ensure efficient coal mining is to retain roadway along goaf in fully mechanized coal caving face,and it can control the deformation of the roadway along goaf.This paper analyzed the reasons for the large deformation of the roadway along goaf in fully mechanized coal caving face,and introduced the filling and retaining technology along goaf,and pointed that the key was to control the appropriate width of the filling body.Based on the specific situation of A Mine in Shanxi Province,the numerical simulation method was used to analyze the influence law of the filling body width.It was found that the width of filling body should be controlled around 2.4 m for 310 fully mechanized caving face in A Mine.