主焦煤矿21141采面高位抽放设计优化研究

Study on Optimization Design of High-level Gas Drainage on 21141 Mining Face in Zhujiao Coal Mine

论述了高位钻孔瓦斯抽放技术原理,给出了冒落带厚度和裂隙带高度的确定方法,对高位钻场和高位钻孔进行了合理设计,采用独立抽放系统进行高负压抽放,并在实践中优化高位钻场和钻孔瓦斯抽放参数,取得了理想的抽放效果,保证了采面的安全高产。

Discussed the principle of high-level gas drainage borehole technology,and put forward the method of determining thickness of caving zone and height of fracture zones.High-level drilling field and high-level borehole were designed reasonably.High negative pressure gas drainage methods were adopted by using independent drainage system,and layout of high-level drilling field and parameters of gas drainage were optimized in practice,which achieved good drainage results,and ensured safety,high productivity of working face.