寺河矿综采工作面初采瓦斯不稳定涌出治理实践

Sihe Mine Comprehensive Mining Work Surface Initial Gas Unstable Out Of Governance Practice

综采工作面采用顶板垮落控制采空区是成本低、安全可靠的一种采空区处理方法,但是在工作面初采期间顶板未垮落时,支架后空间较大,积存瓦斯多,如果顶板大面积垮落,工作面瓦斯会瞬间增大,瓦斯涌出不稳定,引起工作面瓦斯超限或瓦斯事故。研究初采期间顶板初次来压距离,控制顶板逐步垮落,减少工作面瓦斯异常涌出,保障初采工作面瓦斯涌出稳定,防范工作面瓦斯超限或事故具有重要意义,弥补现阶段生产条件下综采工作面初采瓦斯治理不足。

The use of the top plate collapse control hollowing area is a low-cost, safe and reliable mining area treatment method, but during the first stage of the work surface, the top plate did not collapse, the space behind the bracket is larger, the accumulation of gas, if the roof plate collapses in large areas, the work surface gas will increase instantaneously, gas gushing out of unstable, Causes a work surface gas overlimit or gas accident. During the initial harvesting period, the top plate first came to pressure distance, the control roof gradually collapsed, reduced the abnormal flow of gas on the working surface, to ensure the stability of the gas pouring out of the initial work surface, to prevent the work surface gas over limit or accident is of great significance, to make up for the current production conditions of the comprehensive production surface of the initial gas treatment shortage.