大倾角工作面过地质异常区域的解析与分区重构  

Analysis and Partition Reconstruction of Geological Anomaly Area in Large Inclination Working Surface

作　　者：潘长斌 张锦宏 吕兆海 张玉军 尹刚 常锋 Pan Changbin;Zhang Jinhong;Lv Zhaohai;Zhang Yujun;Yin Gang;Chang Feng(Jinjiaqu Coal Mine,CHN Energy Ningxia Coal Industry Co.,Ltd.,Yanchi 751500,Ningxia;Gansu Coalfield Geology Bureau Comprehensive Census Team,Tianshui 741000,Gansu)

机构地区：[1]国家能源集团宁夏煤业有限责任公司金家渠煤矿,宁夏盐池751500 [2]甘肃煤田地质局综合普查队,甘肃天水741000

出　　处：《能源科技》2022年第3期18-24,共7页Energy Science and Technology

摘　　要：国家能源集团宁夏煤业有限责任公司金家渠煤矿井田分布在金家渠、杜窑沟、马柳逆断层等大断层。110302大倾角工作面位于杜窑沟与金家渠断层之间,处于金家渠断层下盘,受其应力作用造成工作面在600~1024 m内3煤层存在变薄、反转、分叉、合并等地质异常现象。主运巷掘进阶段采用钻探探测方法对其赋存条件进行探测,结合煤层顶板岩性及富水情况、煤层层间距等指标确定了3煤层位于巷道底部。钻探探测分析了3煤层存在向斜构造,并且由主运巷分叉向工作面内部合并,采用三维地震资料重新处理与解释方法,确定主运巷向工作面内侧约60 m存在煤层断点不连续现象,结合2种方法对工作面进行分区重构,优化采面布置,将工作面主运巷向回风巷侧平移平距75 m,且重新施工新切眼,将工作面划分为4个区段。工作面重新设计后,达到回采阶段避免经过地质异常区,保证煤炭资源最大程度开采。通过分析新主运巷所揭露地质资料,确定三维地震资料重新解析结果可靠,工作面主运巷平移75 m正确。The Jinjiaqu coal mine field of CHN Energy Ningxia Coal Industry Co.,Ltd.is distributed in the Jinjiaqu,Duoyaogou and Maliu reverse faults and other large faults.110302 large inclination working surface is located between Duyaogou and Jinjiaqu fault,and at the footwall of Jinjiaqu fault.Due to its stress ef⁃fect,there are geological anomalies such as thinning,reversal,bifurcation and merging of the 3 coal seams within 600~1,024 m in the working face.During the digging stage of the main transport roadway,a drilling exploration method was used to explore its storage conditions,and the 3 coal seams were identified to be lo⁃cated at the bottom of the roadway by combining the lithology and water-rich situation of the coal seam roof and the coal seam spacing and other indicators.Through drilling exploration,it is analyzed that there is a syncline structure in coal seam 3,which is forked from the main transport roadway to the interior of the working face.The following 3D seismic data re-processing and interpretation methods were used to determine the existence of coal seam discontinuity within about 60 m from the main transport roadway to the inner part of the working face.Combined with the two methods,the working face was partitioned and reconstruct⁃ed,and the mining face was optimized by shifting tthe main haulage roadway of the working face to the side of the return air roadway with a horizontal distance of 75 m and reconstructing the new cuttings to di⁃vide the working face into 4 sections.After the redesign of the working face,it was possible to avoid pass⁃ing through the geological anomaly area during the recovery stage and ensure the maximum extraction of coal resources.By analyzing the geological data revealed by the new main transport roadway,it was determined that the results of the 3D seismic data re-interpretation were reliable and the main transport roadway of the working face was correctly shifted by 75 m.

关 键 词：地质异常区 钻探方法 地震解释 分区优化 资料验证 

分 类 号：TD32[矿业工程—矿井建设]