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沙曲矿4#主采煤层具有突出危险性,瓦斯问题严重制约着矿井的安全生产。沙曲矿制定了南翼3#煤层、北翼2#煤层保护层开采方案,解决4#煤层开采的瓦斯问题。利用VLD-1000型钻机开展了规划工作面的预抽工作,并将其推广到采区范围内的区域预抽。利用ZDY-4000L型钻机在掘进工作面施工中深钻孔开展了掘进预抽,在综采工作面采用了高抽巷抽采、顶板钻孔等多种瓦斯抽采技术,解决瓦斯超限问题。
The main coal seam of No. 4 Shaqu Mine is of outstanding danger, and the gas problem severely restricts the safety of the mine. Shaqu mine developed a 3 # South Wing Coal Seam, North # 2 coal seam mining program to solve the 4 # coal seam gas problems. Using VLD-1000 drilling rig to carry out the pre-pumping work planned surface, and to promote it to the mining area within the region pre-pumping. ZDY-4000L drilling rig is used for deep borehole pre-pumping in the construction of the heading face. Various gas drainage technologies are adopted in the fully mechanized coal mining face, such as high pumping tunnel and roof drilling to solve the gas overrun problem .