摘要
鄂庄煤矿生产后期的主要采区已转入矿井深部向斜轴部生产,基于采煤工作面主要集中在向斜轴部瓦斯异常区域,在开采过程中存在瓦斯涌出异常现象,严重影响矿井安全生产,特别是向斜轴部采煤工作面采空区、工作面回风隅角等易于瓦斯积聚地点的瓦斯治理困难,瓦斯抽采开采工艺复杂,开采成本高,对煤层开采厚度、地质条件要求较高等客观条件,结合鄂庄煤矿煤层赋存特点,采高条件及瓦斯赋存情况,高瓦斯矿井、煤与瓦斯突出矿井所采用的瓦斯治理方法、措施不适合,技术上可操作性差,经济上不合理。因此,为提高瓦斯治理的科学性与针对性,鄂庄矿需研究掌握瓦斯赋存特点和涌出规律,根据特殊地质构造区域现场实际条件,制定一套符合特殊地质构造区域的综合治理措施,通过对向斜轴部采煤工作面进行瓦斯涌出规律及瓦斯积聚的特点进行研究,结合采煤工作面不同的通风方式采用了与其相适应的瓦斯抽排技术,研究应用了采煤工作"U"型通风+回风隅角瓦斯抽排瓦斯技术,采煤工作"Y"型通风+沿空留巷抽排瓦斯技术以及采煤工作面采空区高位钻孔瓦斯抽排技术,对采煤工作面生产过程中涌出的瓦斯进行了瓦斯抽排处理,杜绝采煤工作面瓦斯积聚,消除瓦斯隐患,提高了采煤工作面生产效率,确保矿井安全生产。
The main mining area Ezhuang Coal Mine in the late stage of production has been transferred to the deep syncline axis of the mine.Based on the fact that the coal mining face is mainly concentrated in the abnormal gas area in the shaft of syncline,there is abnormal gas emission during the mining process,which seriously affects the safety of mine production.In particular,it is more difficult to control gas in the gob area of the coal mining face at the syncline axis,the return air corner of the coal mining face,and other locations that are prone to gas accumulation.In addition,the gas drainage mining technology is complicated,the mining cost is high,and the coal seam mining thickness and geological conditions are relatively high,combined with the coal seam occurrence characteristics,mining height conditions and gas occurrence conditions of the Ezhuang Coal Mine,the gas control treatment methods and measures adopted in high gas mines,coal and gas outburst mines are not suitable with poor technical operability and unreasonable economy.Therefore,in order to improve the scientificity and pertinence of gas control,Ezhuang coal mine needs to study and grasp the characteristics of gas occurrence and the law of gas emission,and develop a set of comprehensive control measures that conform to the special geological structure area based on the actual conditions of the special geological structure area.The control measures are carried out by studying the gas emission law and the characteristics of gas accumulation in the coal mining face of the syncline axis,combining the different ventilation methods of the coal mining face and adopting the appropriate gas drainage technology,the"U"type ventilation and return air corner gas drainage technology,"Y"type ventilation+gas drainage technology along gob-side entry and high-level borehole gas drainage technology in the gob area of coal mining face were used to treat the gas emitted during the production process to prevent the coal mining face gas accumulation and eliminate hidden gas
作者
吴昊
杨维波
刘元宝
程磊
赵建华
陈国雷
刘东教
陈波
WU Hao;YANG Weibo;LIU Yuanbao;CHENG Lei;ZHAO Jianhua;CHEN Guolei;LIU Dongjiao;CHEN Bo(Ezhuang Coal Mine,Xinwen Mining Group Co.,Ltd.,Laiwu 271122,China)
出处
《煤炭科学技术》
CAS
CSCD
北大核心
2020年第S02期124-127,共4页
Coal Science and Technology
