Numerical Simulation of Electric Field Characteristics in Response to Water In-rush in Working Face
According to the principle of resistivity detecting method and influencing law of resistivity in mining affected floor strata, different geoelectric models were constructed, such as model with water in-rush fractured zone in floor, working face advances to different distances, water in-rush after mining. Based on the bi-pole-dipole device, forward modeling was carried out by three-dimensional finite difference method. Apparent resistivity curves of different models can be obtained through numerical calculation and CT images can be obtained by processing the resistivity data with computerized tomography. Response characteristics of electric field in water in-rush working face can be analyzed by combing apparent resistivity curves with CT images. The results show that: good geological results could be achieved through numerical simulation of electric field response characteristics by using finite difference method and analyzing electric field characteristics of water in-rush in working face. This study provides theoretical basis for water in-rush detection using the resistivity method.
Water in-rush in working face Numerical simulation Computerized tomography Response characteristics of electric field Bipole-dipole device resistivity method
CHENG Jiulong SUI Haibo WANGYuhe CAI Mingfeng JIANG Guoqing
State Key Laboratory of Coal Resources and Safe Mining, China University of Mining and Technology, B Key Laboratory of Mine Disaster Prevention and Control, Shandong University of Science & Technology, Key Laboratory of Mine Disaster Prevention and Control, Shandong University of Science & Technology,
国际会议
2010 International Conference on Mine Hazards Prevention and Control(第二届矿山灾害预防与控制国际学术会议 ICMHPC)
青岛
英文
349-355
2010-10-15（万方平台首次上网日期，不代表论文的发表时间）