STUDY ON SURFACE STABILITY AND RESIDUAL DEFORMATION OF OLD GOAF IN DONGJIAGOU MINE，CHINA
DOI:
https://doi.org/10.14311/CEJ.2021.01.0003Keywords:
Old goaf, Surface stability, The residual deformation, Probability integration methodAbstract
Old goaf under the overpass becomes serious hidden trouble of subgrade-pavement and bridge engineering. Based on geological survey, geophysical survey and theoretical analysis, this paper studies on formation mechanism and distribution characteristics of the surface residual deformation in old goaf in No.9 Line Overpass across Rapid Rail Transit Line No.3 in Dalian city. A comprehensive analysis and evaluation has been made on the stability of old goaf. Based on the calculation principle of the probability integration method, the conception of ground residual subsidence coefficient and the predicted model of residual deformation are proposed, ground residual deformation of old goaf under the overpass is predicted. According to the zonal principles of ground stability, the stabilities of areas are divided. The results indicated that, new overpass has an important effect on the old goaf overburden rock activation in study area that the surface will be instability uneven settlement and the ground residual deformation values will exceed allowable values. Some treatment should be done to the old goaf because of the poor stability of goaf and non-goaf within influence zone in study area.
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References
State Administration of Work Safety et al., 2017. Building, water, railway, regulations of compressed coal mining and leaving coal pillar of main well lane. China Standard Press
Yao X.L., Reddish D.J., 1994. Analysis of residual subsidence movements in the UK coalfields. Quarterly Journal of Engineering Geology & Hydrogeology, Vol. 27, No. 1: 15-23.
Marwan A.L.H, M. Nicolas, J.F. Noirel, et al, 2005. Residual subsidence analysis after the end of coalmine work. Example from Lorraine colliery, France. symposium post mining, 16-18.
Cui X, Gao Y, Yuan D, 2014. Sudden surface collapse disasters caused by shallow partial mining in Datong coalfield, China. Natural Hazards, Vol. 74, No. 2: 911-929.
Donnelly L.J., Cruz H.D.L., Asmar I, et al., 2001. The monitoring and prediction of mining subsidence in the Amaga, Angelopolis, Venecia and Bolombolo Regions, Antioquia, Colombia. Engineering Geology, Vol. 59, No. 1: 103-114.
Zhou D, Wu K, Chen R, et al., 2014. GPS/terrestrial 3D laser scanner combined monitoring technology for coal mining subsidence: a case study of a coal mining area in Hebei, China. Natural Hazards, Vol. 70, No. 2: 1197-1208.
Xuan D, Xu J, 2014. Grout injection into bed separation to control surface subsidence during longwall mining under villages: case study of Liudian coal mine, China. Natural Hazards, Vol. 73, No. 2: 883-906.
Palchik V, 2005. Localization of mining-induced horizontal fractures along rock layer interfaces in overburden: field measurements and prediction. Environmental Geology, Vol. 48, No. 1: 68-80.
Guo G.L., Wei K.L., Mu B.S., et al., 2005. Mechanism and control of ground residual deformation over longwall goaf. Transactions of Nonferrous Metals Society of China, Vol. 15, No. 3: 76-79.
Swift G, Reddish D, 2002. Stability problems associated with an abandoned ironstone mine. Bulletin of Engineering Geology & the Environment, Vol. 61, No. 3:227-239.
Wang Z.S., Deng K.Z, 2010. Study on grey markov prediction model for old goaf residual subsidence. Journal of geodesy and geodynamics, Vol. 30, No. 6: 126-130.
Zhang A.B., Gao J.X., Zhang Z.J., 2011. Deformation analysis and prediction of building above old mine goaf based on multiscale method. Rock and Soil Mechanics, Vol. 32, No. 8: 187-192.
Mi L.Q., Zha J.F., Wang X, 2012. Ensemble Kalman filter prediction model of old goaf residual subsidence. Metal Mine, No. 8: 138-141.
Ma L.X., Wu C.Y, Gao Y.W., Evaluation of the influence of residual deformation above mined-out area on the stability of urban rail transit. Coal geology and exploration, Vol. 41, No. 1: 40-49.
Zhu G.Y., Xu Z.H, Xie C, et al., 2014. Study of influence functions of surface residual movement and deformation above old goaf. Chinese Journal of Rock Mechanics and Engineering, Vol. 33, No. 10: 1962-1970.
Chen M.X., 2018. Research on the surface subsidence status and residual settlement prediction of the goaf. Journal of railway engineering society, Vol. 35, No. 6: 16-20, 76.
Guo G.L., 2001. Deformation mechanism and control of building foundation above the old goaf. (China Mining University Press) 2-140.
Chen L.Y., Chen S.X, Wu X.H., 2010. Study on surface deformation monitoring in Dongjiagou coal mine, No. 14: 17.
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