焦作矿区由于开采水平不断延深,矿井瓦斯涌出量不断增大,煤与瓦斯突出现象也越来越多。对瓦斯的防治与处理,多年来在井下采用钻孔抽放和其它预防突出的作业措施,取得了较好的效果。但是在井下采取防治措施时,存在着开拓掘进速度慢,采面接替紧张和预排时间不能保证等具体困难,而且在井下进行防治作业过程中,仍然会遭受突出的威胁。根据以上情况,急需寻求一种新的预排煤层瓦斯途径,以减少在井下处理瓦斯占用的时间与设备,并能预先解除井下瓦 Due to the continuous deepening of the mining level in Jiaozuo Mining Area, the amount of gas emission from mines has been continuously increasing, and the phenomena of coal and gas outbursts have also been increasing. The prevention and treatment of gas has been used for many years underground drilling drainage and other preventative outstanding work practices and achieved good results. However, when controlling measures are taken downhole, there are some specific difficulties such as the slow speed of exploiting and digging, the tight succession of mining face and the failure of pre-schedule, and they still face prominent threats in underground operations. Based on the above situation, it is urgent to seek a new pre-drainage coal seam gas route to reduce the time and equipment needed for underground gas treatment and to pre-dismantle the downhole