摘要
为进一步研究断层导水性问题,以祁东煤矿Ⅱ3采区F5,DF5-21两条采区边界断层为背景,针对具体的地质条件,在定性研究的基础上分别采用SSF,CSP,SGR综合分析法和断面正压力判别法对断层侧向及垂向封闭性进行定量研究,进而对该采区边界断层导水性问题进行评价。研究结果表明:断距为断层侧向封闭性的主要影响因素,随着断距的增大,泥岩涂抹距离变长,断层侧向封闭性变差,导致断层侧向导水性变好;断面正压力为影响断层垂向封闭性的决定性因素,随着地层埋深的增加,断面正压力增大,断层垂向封闭性变好,导致断层垂向导水性变差。研究结果可为矿井防治水工作提供相关参考。
In order to study the fault hydraulic conductivity,two mining area boundary faults,F5 and DF5-21 in Qidong coal mine Ⅱ3 mining area,were used as background,and the lateral and vertical closure of the faults were studied quantitatively on the basis of qualitative research using SSF,CSP,SGR integrated analysis method and positive pressure discriminant method of the fault surface respectively. The hydraulic conductivity of the mining area boundary faults was evaluated. The results show that the fault distance is the main influencing factor of the lateral closure of the fault. With the increase of the fault distance,the mudstone coating distance becomes longer,the lateral closure of the fault becomes worse,resulting in better lateral hydraulic conductivity of the fault. The positive pressure of the fault surface is the decisive factor affecting the vertical closure of the fault,with the increase of the burial depth of the stratum,the positive pressure of the fault surface increases,the vertical closure of the fault becomes better,resulting in worse vertical hydraulic conductivity of the fault. The research results can provide relevant reference for water control in coal mines.
作者
张培森
许大强
付翔
解建
董宇航
张晓乐
ZHANG Peisen;XU Daqiang;FU Xiang;XIE Jian;DONG Yuhang;ZHANG Xiaole(State Key Laboratory of Mining Disaster Prevention and Control Co-founded by Shandong Province and the Ministry of Science and Technology,Shandong University of Science and Technology,Qingdao 266590,China;National Demonstration Center for Experimental Mining Engineering Education,Qingdao 266590,China;Anhui Wanbei Coal-Electricity Group Co.,Ltd.,Suzhou 234000,China)
出处
《采矿与岩层控制工程学报》
北大核心
2022年第2期1-10,共10页
Journal of Mining and Strata Control Engineering
基金
国家重点研发计划资助项目(2018YFC0604702)
国家自然科学基金资助项目(51379119)
山东省自然科学基金资助项目(ZR2021ME086)。
关键词
断层封闭
定量评价
断层导水性
矿井防治水
fault closure
quantitative evaluation
fault water conductivity
mine prevention and control of water
