Research On Influence And Countermeasures To Highway Above Subsidence-affected Zone Of Coal

As highway network more and more intensive in our country, lots of highways willcross the goaf of some mine areas, followed problems for security and stability tohighway remain to be solved, so research on influence and countermeasures to highwayplays an important role above goaf. In this paper, according analyses and summarizesthe result of related theory, the author obtained some results in order to apply for actualenginerring, To cut economic loss and offer some available guidance for actualenginerring.Firstly, the author comprehensive analyzed the relative research literature,explained goaf stability evaluation and interaction theory, research method of goaf anddetection technique to make academic summary. Also，the author uses randomizedmedium theory to introduce the surface sink value, horizontal movement anddeformation value, Basing on this theory to forecast the surface residual deformationvalue.So, we can estimate the effect of the goaf and then decide whether the goaf needsto be treated or not. This paper, the author also build a three-dimensional simple butpractical and forecasting the surface residual deformation value of analysis model fromgoaf underlying highway adopting relative simulation of finite element and then carriedthrough stability analysis of the model using ADINA, a universal finite element analysissoftware. The analysis achieved the best results.Comparison highway effects of goaf including different dip angles, mining depth,mining thickness, mining width and so on. The author also systematically discussed theeffects different lithology, topographic, filling effectiveness of goaf, gaining comparedresults. And author explained countermeasures for grouting treatment to goaf, as well asmake a feasibility analysis.