LIU Chao'an, GAO Wenlong, QUE Jinsheng. 2011: NUMERICAL ANALYSIS OF TRANSMISSION TOWER FOUNDATION STABILITY AT VARIOUS ZONES AFFECTED BY COAL SEAM MINING. JOURNAL OF ENGINEERING GEOLOGY, 19(6): 922-927.
    Citation: LIU Chao'an, GAO Wenlong, QUE Jinsheng. 2011: NUMERICAL ANALYSIS OF TRANSMISSION TOWER FOUNDATION STABILITY AT VARIOUS ZONES AFFECTED BY COAL SEAM MINING. JOURNAL OF ENGINEERING GEOLOGY, 19(6): 922-927.

    NUMERICAL ANALYSIS OF TRANSMISSION TOWER FOUNDATION STABILITY AT VARIOUS ZONES AFFECTED BY COAL SEAM MINING

    • Coal mining has caused a variety of mining-affected zones including old mined-area,present mined-area and future mined-area.The 1000 kV UHV transmission line of Southeast Shanxi to Nanyang passes through the mined out space and layout area of Shanxi coalfield.This paper appraises the influence of mining of coalfield layout area to the foundation stability of the transmission towers.Based on the locally collected data,it used the FLAC3D numerical method.The mining simulation of the coal seam 3# under the N177 tower of the 1000 kV UHV transmission line is presented.After the coal seam 3# has been conducted,the numerical simulation of coal seam 9# is established.The results are as follows: The mining of the coal seam 9# can bring influence on the stability of the transmission tower foundation.The most subsidence of the ground is 1.15m and the most inclination of the transmission tower foundation along the power line is 5.7.Without taking anti-deformation measures,the inclination of the tower foundation will endanger the stability of 1 000 kV UHV transmission line.
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