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大屯徐庄矿7121综采工作面,采空区自然发火严重,我们采用均压通风等技术措施控制了火势的发展,为撤出全套综采设备创造了条件,避免了国家财产的损失。现将应用均压通风等措施预防、控制综采工作面自然发火的实践情况介绍如下。一、概况徐庄矿位于大屯煤田中部,井型为90万吨,1979年底移交生产,属低瓦斯矿井。通风方式为中央边界抽出式。可采煤层有5层,目前正开采7号煤层,属气煤。煤层有自然发火性,煤尘有爆炸危险性。现有两个
The 7121 fully mechanized mining face in Xuzhuang mine in Datun has a serious natural fire in the goaf. We adopted the technical measures such as pressure equalization and ventilation to control the development of the fire and created the conditions for withdrawing a full set of fully mechanized mining equipment and avoiding the loss of state property. Now the application of pressure equalization ventilation and other measures to prevent and control the fully mechanized coal mining face spontaneous combustion practices are described below. I. Overview Xuzhuang mine is located in the middle of Datun Coalfield, with a well pattern of 900,000 tons and was handed over to production by the end of 1979. It is a low-gas mine. Ventilation method for the central border out type. There are 5 layers of recoverable coal seams, and No. 7 coal seam is currently being exploited, which is a coal gas. Coal seam has natural ignition, coal dust explosion risk. There are two