Advanced forecast of coal seam thickness variation by integrated geophysical method in the laneway
Coal seam thickness variation has a direct relationship with coal mine design and mining, and the mutation locations of the thickness are generally the gas accumulation area. In order to justify the feasibility and validity of advanced forecast about the thickness change, we carried out geophysical numerical simulation. Utilizing generalized Radon transform migration, coal-rock interface can be identified with an error of less than 2％. By the calculation of 2.5D finite difference method, transient electric magnetic response characteristics of the thickness variation is conspicuous. In a coal mine the case study indicated that: the reflected wave energy anomaly offer interface information of the thickness change point; the apparent resistivity provide the physical index of the thick or thin coal seam area; synthesizing two kinds of information can predict the thickness variation tendency ahead of the driving face, which can ensure the safety of driving efficiency.
advanced forecast generalized Radon transform migration 2.5D finite difference method coal seam thickness
Wang Bo Liu Sheng-dong Jiang Zhi-hai Huang Lan-ying
State Key laboratory of deep geomechanics & underground engineering, China University of Mining and School of Resource and Earth Science,China University of Mining and Technology, Xuzhou 221008, China
国际会议
The First International Symposium on Mine Safety Science and Engineering (首届矿山安全科学与工程学术会议)
北京
英文
350-357
2011-10-27（万方平台首次上网日期，不代表论文的发表时间）