Study On Methods To Reinforce The Giant Mining Area Beneathan The Railway Special Line Of Longshan Power Plant In Hebei And Numerical Simulation

This thesis takes the giant magnetite mining area beneathan the railway special line of LONGSHAN POWER PLANT in HEBEI as the research living example. Develops the prospecting and stability appraising on the magnetite mining area .Then choices the scheme for reinforcing mining areas methods and forecasting and studies the residual subsidence of the mining area. works as follows: 1) Bases on the present situations and characteristics of the the giant magnetite mining area beneathan the railway special line of LONGSHAN POWER PLANT in HEBEI, uses the synthetical geology prospecting method to survey and investigate the magnetite mining area. Make the distribution scope of the mining areas, the characteristics of the magnetite mining and the caves growth circumstances clear completely.2) According to the prospecting result of the giant magnetite mining area beneathan the railway special line,the stability evaluation of the mining area area is carried on, and the appraises show that the mining area does not agree with the requirement of the newly-built railway special line,and need to be reinforced.3) Demonstrates use the serosity pouring" method to reinforce he magnetite mining area, and fixs up designing serosity pouring scope,parameters and perforate.4) Studied by choosing typical geological model and use FLAC2D numerical simulation software to calculate and evaluates to analysis the residual subsidence of the mining area after serosity pouring by different reinforce's width and different serosity's intensity.The research indicated that real reinforce's width and serosity's intensity satisfies of the limit requirement of rhe roadbed offspring subsides. The research achievements can provide theory reference for civil engineering's range.