综放工作面配风量对采空区遗煤瓦斯涌出的影响研究  

The effects of airflow quantity of the fully mechanized caving face on the gas emission of residual coal in goaf

作　　者：范涛 刘彦青 桑聪[2,3] 程志恒 FAN Tao;L;SANG Cong;CHENG Zhi-heng(Henan Xinzheng Coal and Electricity Co.,Ltd.,Xinzheng 451150,China;The Institute of Coal Safety and Technology,China Coal Research Institute,Beijing 100013,China;State Key Laboratory of Coal Efficient Mining and Clean Utilization（China Coal Research Institute）,Beijing 100013,China;School of Safety Engineering,North China Institute of Science and Technology,Beijing 101601,China)

机构地区：[1]新郑煤电有限责任公司,河南新郑451150 [2]煤炭科学技术研究院有限公司安全分院,北京100013 [3]煤炭资源高效开采与洁净利用国家重点实验室(煤炭科学研究总院),北京100013 [4]华北科技学院安全工程学院,北京101601

出　　处：《煤炭工程》2018年第11期58-62,共5页Coal Engineering

摘　　要：为了得到综放工作面配风量与通风方式这两个通风关键因素对采空区遗煤瓦斯涌出的影响规律,以郑煤集团新郑煤电有限责任公司11208综放工作面为研究对象,建立了综放工作面采空区遗煤瓦斯运移CFD稳态计算模型,在验证了计算模型计算结果正确性的基础上,利用该模型对U型、U+I型、偏Y型、并列双U型四种通风方式下工作面配风量对上隅角瓦斯浓度、回风巷瓦斯浓度、风排瓦斯巷瓦斯浓度、总风排瓦斯量的差异性进行了定量化分析,研究结果表明,U+I型、偏Y型与并列双U型通风方式有利于控制上隅角瓦斯浓度,但采空区风排瓦斯巷存在瓦斯超限隐患,研究结果对综放工作面通过配风量控制采空区遗煤瓦斯涌出措施具有重大的参考价值。In order to obtain the law of the effects of airflow quantity and ventilation system of the fully mechanized caving face on the gas emission of the left mine in gob, taking Zhengzhou Coal Group Xinzheng Coal Limited Liability Company of 11208 fully mechanized coal face as the research object, the calculation model of the gas emission of the left mine in gob of fully mechanized coal face was established. Based on the verification of the correctness of the computation results of the calculation model, under different ventilation systems of U-tube , U ＋I-tube, inclined to Y type and paratactic double U-shape the differences of the gas-concentration in upper corner, the gas-concentration in air-return laneway, the as- concentration in the roadway used for gas drainage and total gas-concentration in gas quantity by air-flow in gob were analyzed by using the model. The results showed that under U＋I-tube ventilation system, inclined to Y type ventilation system and paratactic double U-shape ventilation system, the gas-concentration in upper comer was well controlled, but gas-concentration in the wind drainage roadway in the gob had a high probability of exceeding the limit. The research results had important reference value for controlling gas emission of the left mine in gob by air quantity of the fully mechanized caving face.

关 键 词：综放工作面 配风量 采空区遗煤 瓦斯涌出 上隅角瓦斯浓度 通风方式 

分 类 号：TD712.5[矿业工程—矿井通风与安全]