基于钻冲压协调作业的煤层卸压增透技术  

Coal seam pressure release and permeability enhancement technology based on coordinated drilling and stamping operation

作　　者：杨程涛 武腾飞 张卫华 熊俊杰 YANG Chengtao;WU Tengfei;ZHANG Weihua;XIONG Junjie(Henan Energy Group Research Institute Co.,Ltd.,Zhengzhou 450046,China;Henan Engineering Research Center of Simultaneous Extraction of Coal and Gas with Low Permeability and Outburst Coal Seam,Zhengzhou 450046,China;No.6 Coal Mine,Hebi Coal and Electricity Co.,Ltd.,Hebi 458006,China)

机构地区：[1]河南能源集团研究总院有限公司,河南郑州450046 [2]河南省低渗突出煤层煤与瓦斯共采工程技术研究中心,河南郑州450046 [3]鹤壁煤电股份有限公司第六煤矿,河南鹤壁458006

出　　处：《煤矿安全》2024年第2期62-70,共9页Safety in Coal Mines

摘　　要：为了解决鹤壁矿区瓦斯抽采钻孔影响范围小、衰减速度快,瓦斯灾害治理难度大,治理周期长等问题,提出了冲压协调作业的工艺流程,形成了以自动钻机群打钻-临时封孔预抽-预抽后冲压联合作业的钻冲压协调作业技术模式,并在鹤煤六矿进行工业性试验。现场应用结果表明:该技术模式充分发挥了自动钻机连续打钻、快速作业、减员提效的优势,实现了瓦斯抽采钻孔施工作业、水力化冲压协调增透作业的专业化、连续化、规模化,使底板岩巷内施工穿层钻孔治理瓦斯的施工工效在同等地质条件下提高48%;同时,利用自动钻机施工抽采钻孔完成后,对其进行临时封孔抽采,使钻孔内的游离态瓦斯经过抽采后大幅减少,大大降低了水力化措施施工期间巷道瓦斯超限事故发生的频率,有效保障了施工的安全;试验钻孔平均瓦斯体积分数是常规水力冲压措施的1.31倍,试验单元钻孔平均日抽采纯量是常规水力冲压措施的1.79倍。In order to solve the problems such as small influence range,fast decay rate,difficulty in gas disaster control and long treatment period of gas extraction drilling in Hebi Mining Area,a technological process of coordinated stamping operation was put forward,and the technical mode of drilling and stamping coordinated operation with automatic drilling rig group drilling-temporary sealing hole pre-pumping-stamping joint operation after pre-pumping is formed,and industrial test is carried out in Hebi No.6 Coal Mine for industrial trials,the field application results show that:the technology mode gives full play to the advantages of automatic drilling rig continuous drilling,fast operation,reducing staff and improving efficiency,realizes the specialization,continuity and scale of gas extraction drilling construction operation and hydraulic stamping coordinated penetration operation,and makes the construction work efficiency of construction of penetration drilling in the bottom rock tunnel for gas treatment increase by 48%under the same geological conditions;meanwhile,the at the same time,after the construction of extraction holes by automatic drilling rig is completed,the temporary sealing of the extraction holes is carried out,so that the free gas in the holes is greatly reduced after extraction,which greatly reduces the frequency of gas overrunning accidents in the roadway during the construction of hydraulic measures and effectively guarantees the safety of construction;the average gas extraction concentration of the test borehole is 1.31 times of that of the conventional hydraulic ramming measure,and the average daily pure extraction volume of the test unit borehole is 1.79 times of that of the conventional hydraulic ramming measure.

关 键 词：水力冲孔 水力压裂 智能化 减人提效 瓦斯抽采 卸压增透 

分 类 号：TD712[矿业工程—矿井通风与安全]