山西潞安集团王庄矿瓦斯抽放系统设计.doc

山西潞安集团王庄矿瓦斯抽放系统设计 摘要：王庄煤矿位于山西省长治市郊区顾县，距市中心30km。矿井设计年产量90万吨，服务年限60年。目前开采的3#煤层面积6.5 K㎡37°，平均煤厚8m，整体地质条件比较简单，地堪瓦斯含量平均为7.2m3/t，气体中甲瓦成分平均为81.1%。实测的瓦斯含量为5.84m3/t。根据王庄矿62采区6201工作面瓦斯涌出量预测结果6201工作面的瓦斯涌出量是较大的，达到设计产量时，在瓦斯含量较高地点的平均绝对瓦斯涌出量可达11.7m3/min。 随着矿井开采的深入，矿井瓦斯含量、压力及涌出量呈增大的趋势，单靠通风方法解决工作面瓦斯难度较大。而瓦斯抽放可有效地降低风流中瓦斯浓度，很好地解决瓦斯超限问题。在此前提下，收集王庄矿瓦斯赋存参数、预测瓦斯涌出量及瓦斯含量、进行瓦斯抽放必要性及可行性论证、确定瓦斯抽放方法及管路设计，从而完成王庄煤矿3#煤层瓦斯抽放系统设计。并取得瓦斯灾害防治和瓦斯资源利用的双重目的。 关键词：矿井瓦斯抽放方法抽放管路设备选型 Wangzhuang Mine Gas Drainage System Design The Wang zhuang mine is located thirty kilometers southeast chang zhi city in He Nan province. The design of mine annual production is 900,000 tons, serviced 60 years. At present, the 3# coal seam is mining, whose field area is 6.5Km2 and the field coal seams is stable, 37° obliquity and 8m thick for coal, the whole geological conditions in the field is simpler. Manner worthy of the gas content of an average of 7.2m3 / t, A tile composition of gas on average 81.1%. Measured the gas content of 5.84 m3 / t. According to the 6201 Face of Wang zhuang Mine 62 Mining District 6201 Face Gas Emission Prediction results of gas emission is larger, When the design production, Average absolute gas emission in high gas content of the place of up to 11.7m 3 / min. With mine mining, coal mine gas content, pressure and emission quantity is increasing , Only by ventilation method to solve the gas is difficult. And the gas drainage can effectively reduce gas concentration in the wind, well solve the problem the gas overrun.. In this premise, collecting gas occurrence parameters of Yi Luo mine, forecasting gas flow-volume and gas content, for the necessity and feasibility of the gas drainage, determining the gas drainage method and designing piping, thus completing the 3# coal seam of wangzhuang mining gas drainage system design. And obtain the doublel purpose of the gas hazard prevention and gas resources utilization. Keywords: mine gas；as emission；as；rainage method；rainage pipeline； quipment selecti