摘要
为了确定回采工作面覆岩空间裂隙的发育情况,优化高低位长短钻孔在覆岩裂隙当中的空间位置,提高瓦斯抽采效果,通过定位某工作面推进过程中微震事件,应用分析软件及加载的AutoCAD程序对微震数据进行三维展示,应用程序控制功能进行X、Y、Z轴的三维立体剖切,展示随着工作面的推进覆岩空间裂隙场的演化过程,利用编制的高低位长短钻孔瓦斯抽采设计程序进行了钻孔优化设计,对某工作面的2号钻场高低位长短钻孔瓦斯抽采空间位置进行了优化,优化后较之前瓦斯抽采浓度能够提高10%~30%,提高了瓦斯抽采效果。实践表明,微震监测数据应用到高低位长短抽采钻孔的优化当中可以弥补传统经验公式计算裂隙带的不足,可以为相同条件回采工作面高低位长短钻孔抽采设计提供依据。
In order to determine the development of overlying rock spatial fissures in the mining face,optimize the spatial position of high and low position long and Short Boreholes in the overlying rock fissures,and improve the gas extraction effect,In order to determine the development of overlying rock spatial fissures in the mining face,optimize the spatial position of high and low position long and Short Boreholes in the overlying rock fissures,and improve the gas extraction effect,the location of microseismic events in the process of advancing the working face has been studied.The micro seismic data were displayed in three dimensions by using the analysis software and the loaded AutoCAD program.Based on the program control function of the software,the three-dimensional cutting state of X,Y and Z axes of microseismic events was studied.The spatial evolution process of the overburden fracture field in the working face was shown.Using the program of gas drainage design for high and low position long and short boreholes,the optimization design of boreholes was carried out.The gas drainage space position of the long and short boreholes at the high and low levels of the No.2 drill site in a coal mining face was optimized.The results show that the optimized gas extraction concentration was increased by 10%-30%compared with the previous one.The practice shows that the application of microseismic monitoring data to the optimization of long and Short Boreholes with high and low levels can make up for the deficiency of the traditional empirical formula for calculating the fracture zone,and can provide a basis for the design of long and Short Boreholes with high and low levels in the mining face under the same conditions.
作者
杨宏伟
王海东
王俊红
高宏
钱志良
韩兵
YANG Hongwei;WANG Haidong;WANG Junhong;GAO Hong;QIAN Zhiliang;HAN Bing(School of Mine Safety,North China Institute of Science and Technology,Yanjiao,065201,China;Chengzhuang Mine of Jinneng Holding Coal Industry Group,Jincheng,048000,China;Shenyang Institute of CCTEG,Liaoning,110012,China)
出处
《华北科技学院学报》
2022年第4期56-59,77,共5页
Journal of North China Institute of Science and Technology
关键词
微震监测
三维剖切
瓦斯抽采
空间布置
microseismic monitoring
three-dimensional sectioning
gas extraction
spatial layout
