Chongqing Research Institute Company Limited, China Coal Technology and Engineering Group

针对我国煤层松软、低渗、抽采困难的问题,提出了充分利用煤层采动卸压效应强化抽采煤层解吸瓦斯和工作面涌出瓦斯的采动区地面井抽采技术。从资源评价、井型设计、地面布井、局部防护、安全抽采控制等关键技术和成套技术的应用效果及发展前景等方面对煤矿采动区瓦斯地面井抽采技术在瓦斯治理方面的应用进行了深入分析,指出煤矿采动区地面井抽采瓦斯技术是进行煤矿区瓦斯灾害综合治理的一条有效途径;提出了进行煤矿区煤层气规模化开发、有效治理井下瓦斯灾害的合理化建议:地面井布井应偏向工作面回风巷侧,井型结构应充分发挥采场裂隙带的作用。

According to the soft, low permeability and difficult gas drainage problems of the seam in China, a surface gas well drainage technology was provided to drain the desorbed gas from the seam and the gas in the mining disturbed area emitted from the coal mining face with a full utilization of the seam mining and pressure released effect. A deep analysis was conducted on the technology applied to the mine gas control from the resources evaluation, gas well design, surface gas well layo ut, local protection, safety gas drainage control and other key technology of the surface gas well drainage technology in the mining disturbed area of the mine, applicati on effect of the completed technology, development prospects and other aspects. The paper pointed out that the surface gas well drainage technology in the mining dist urbed area of the mine would be an effective access to the comprehensive gas disaster control in the mining area. The rational proposals of a scale develop the coalbe d methane in the mining area and to effectively control the gas disasters in the underground mine was provided. The layout of surface gas wells should be partial to the air retuning gateway side of the coal mining face and the gas well structure should fully play the role of the cracking zone of the coal mining face.

国家科技重大专项资助项目(2011ZX05040-004)；国家自然科学基金资助项目(51374236)；山西省基础研究计划-煤层气联合研究基金资助项目(2012012015)；