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基于采空区悬管引流装置的工作面上隅角瓦斯治理研究 被引量:4

Study on gas control in upper corner of working face based on hanging tube drainage device in goaf
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摘要 为了有效治理工作面上隅角瓦斯超限,结合现场实际情况,运用Fluent数值模拟软件,研究采空区悬管引流装置解决“U”型通风工作面上隅角瓦斯浓度易超限的问题。模拟了上隅角瓦斯积聚规律,优化了上隅角悬管的埋深和负压参数,确定了引流装置的形状尺寸。研究表明,在悬管埋深为3 m、负压为10 kPa的条件下,安装长度为0.4 m、开口角度为60°的1/4伞状引流装置,能对上隅角瓦斯浓度起到最佳控制效果,可使上隅角瓦斯浓度控制在0.75%左右。在现场应用中该悬管引流装置取得了较好的效果,表明采空区悬管配合引流装置能有效解决上隅角瓦斯浓度超限的问题。 In order to effectively control the gas over limit in upper corner of working face,combined with the actual situation in the field,the numerical simulation software Fluent was used to study that the drainage device of hanging tube in goaf solve the problem of gas over limit in upper corner of working face with“U”type ventilation.The gas accumulation law in the upper corner was simulated,the buried depth and negative pressure parameters of the hanging pipe in the upper corner were optimized,and the shape and size of the drainage device were determined.The study shows that when the buried depth of the hanging tube is 3 m and the negative pressure is 10 kPa,the installation of 1/4 umbrella drainage device with a length of 0.4 m and an opening angle of 60°can best control the gas concentration in the upper corner,and the gas concentration in the upper corner can be controlled at about 0.75%.The hanging tube drainage device has achieved good results in field application,indicating that the hanging tube combined with the drainage device in goaf can effectively solve the problem of gas concentration over limit in the upper corner.
作者 朱红青 郭晋麟 白志鹏 暴庆丰 ZHU Hongqing;GUO Jinlin;BAI Zhipeng;BAO Qingfeng(School of Emergency Management and Safety Engineering,China University of Mining and Technology(Beijing),Beijing 100083,China;Shanxi Lu’an Mining Group Co.,Ltd.,Changzhi 046200,China)
出处 《矿业安全与环保》 北大核心 2021年第1期80-84,90,共6页 Mining Safety & Environmental Protection
基金 国家重点研发计划项目(2016YFC0801800) 余吾矿U型工作面上隅角埋管瓦斯抽放工艺与装备研究(2018054)。
关键词 工作面上隅角 瓦斯超限 数值模拟 采空区悬管 引流装置 upper corner in working face gas over limit numerical simulation hanging tube in goaf drainage device
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