成庄矿综放工作面通风方式改造及采空区瓦斯治理实践  

Ventilation mode transformation and gas control practice of goaf in fully mechanized working face of Chengzhuang Coal Mine

作　　者：赵学良 朱鹏飞 罗华贵 王宁 王润超 ZHAO Xueliang;ZHU Pengfei;LUO Huagui;WANG Ning;WANG Runchao(Shanxi Jincheng Coal Group Technology Research Institute Co.,Ltd.,Jincheng 048006,China;Chengzhuang Coal Mine,Jincheng Coal Group,Jincheng 048026,China)

机构地区：[1]山西晋煤集团技术研究院有限责任公司,山西晋城048006 [2]晋煤集团成庄矿,山西晋城048026

出　　处：《矿业安全与环保》2020年第5期85-89,共5页Mining Safety & Environmental Protection

摘　　要：为使成庄矿4312综放工作面由偏Y型通风方式安全改造成多巷U型通风方式,提出新建上隅角抽采系统,通过工作面后部通风联络巷密闭墙埋管对采空区垮落带瓦斯进行加强抽采,使回采工作面形成了高位钻孔主抽顶板断裂带瓦斯+联络巷密闭墙埋管主抽垮落带瓦斯+风排采空区瓦斯治理模式。将工作面回采过程分成4个阶段进行分析,得到工作面多巷U型通风方式稳定后上隅角抽采系统的抽采瓦斯混合量为420 m^3/min左右,抽采瓦斯浓度约为2.00%;回采工作面采空区瓦斯抽采率达到57.65%,上隅角瓦斯浓度为0.60%左右;推算得到在现有抽采能力下,可以将通风联络巷间距扩大到80 m。In order to make 4312 fully mechanized working face of Chengzhuang Coal Mine safely transformed from the partial Y-type ventilation to the multi-lane U-type ventilation,a new extraction system in upper corner was proposed,the gas extraction in caving zone of goaf was strengthened by closed wall buried pipe in the ventilation connection lane at rear of working face,in this way,a gas control mode was formed in the mining face,which is composed of main gas extraction in high drilling roof fault zone,main gas extraction in closed wall buried pipe in the ventilation connection lane,and wind exhausting goaf.The stoping process in the working face was divided into four stages for analysis,it is found that after the multi-lane U-type ventilation in the working face is stabilized,the gas mixture of the upper corner extraction system is about 420 m 3/min and the gas concentration of the extraction system is about 2.00%;the gas extraction rate in goaf of the mining face is 57.65%,and the gas concentration in the upper corner is about 0.60%;it is concluded that with the existing extraction capacity,the ventilation connection lane spacing can be expanded to 80 m.

关 键 词：通风方式改造 上隅角抽采系统 密闭墙埋管 高位钻孔 采空区瓦斯 

分 类 号：TD712[矿业工程—矿井通风与安全]