State Key Laboratory of Coal Resources and Safe Mining,China University of Mining and Technology MOE Key Lab
of Mine Gas and Fire Disaster Prevention and Control,China University of Mining and Technology School of Safety
Engineering,China University of Mining and Technology

为解决塔山煤矿煤炭开采过程中瓦斯频繁超限的问题,以塔山煤矿8105工作面为研究对象,通过对比分析8105工作面"U"型和"E"型通风方式的瓦斯涌出规律,提出了"两进一回"新型通风方式,使得"E"型通风方式中出现的"丁"字口三角区域瓦斯体积分数小于0.5%,解决了瓦斯超限问题。同时,在"两进一回"通风方式的基础上,提出另外一种新的通风方式"E+I",以此弥补"E"型通风方式中风流不稳定的缺陷,以完善综放工作面局部瓦斯积聚及上隅角瓦斯超限的治理理念。

In order to solve the gas overlimit problem frequently occurred during the coal mining process in Tashan Mine,based on No.8105 coal mining face in Tashan Mine as the study object,with the comparison analysis on the gas emission laws of“U"type and“E"type ventilation methods applied to No.8105 coal mining face,a new ven tilation method with"two air incomes and one air returning"was provided. Thus in the“E"type ventilation method,the gas volume fraction of the“T"cross delta area was less than 0. 5% and the gas overlimit problem was solved. Meanwhile,based on the“two air incomes and one air returning"ventilation method,another new“E + I"ventilation met hod was provided to make up the shortage of the unstable air flow in the"E"type ventilation method and to make the conception and idea perfectly to control the gas accum ulation in partial location of the fully-mechanized top coal caving mining face and the gas overlimit at the upper corner of the coal mining face.