摘要
千米定向钻孔瓦斯抽采影响半径测定工作长期以来一直是困扰着瓦斯抽采的重大难题,本论文根据瓦斯抽采工程的现场实际情况以神华乌海能源有限责任公司五虎山煤矿903综采工作面千米定向钻孔瓦斯抽采影响半径的测定为背景,提出了将相对瓦斯压力测定法与数值分析中的插值思想有机结合的二分法测定千米定向钻孔瓦斯抽采影响半径,现场运用二分法测定了千米定向水平长钻孔抽采半径为6.25 m,在该抽采半径条件下布置瓦斯抽采钻孔,矿井瓦斯抽采率提高了24%。
The determination of the influence radius of gas drainage by kilometer directional drilling has been a major problem in gas drainage for a long time. According to the actual situation of the gas drainage project, this paper uses the Wuhushan Coal Mine of Shenhua Wuhai Energy Co., Ltd. Based on the determination of the influence radius of gas drainage in 903 fully mechanized mining face, a dichotomy method, which combines the relative gas pressure measurement method and the in-terpolation idea in numerical analysis, is proposed to measure the influence of gas drainage in 1000-meter directional drilling. The dichotomy method was used to determine the drainage radius of the 1000-meter directional horizontal long borehole to be 6.25 m. Under the condition of this drainage radius, the gas drainage hole was arranged, and the gas drainage rate of the mine was increased by 24%.
出处
《矿山工程》
2022年第3期322-329,共8页
Mine Engineering
