Research On Deformation Characteristics And Control Technology Of The Along Roadway

This paper take the 3₂46 working face of the Qidong Coal Mine as the project background. With the theory of mechanics analysis, the computer numerical simulation and measuring on the spot and so on.Analysis of coal pillar in the narrow space along the roadway and the overlying rock strata appear on the basis of the law, and carries on the studying on the spatial deformation characters of surrounding rock and the different time tunnel adjacent formation's stability, through the stress field characteristic the tunnel adjacent formation, as well as the tunnel adjacent formation's reciprocity. Carry on qualitative and the quota analysis the factors which affects the coal pillars width. With these influencing factor that considering the support resistance of the supporting structure for the coal pillars in the adjacent section and the cohesion of the residual cohesion between the coal and the roof or floor. We can construct the computing model of the pillars width of the limit equilibrium zone by the theory t of the limit equilibrium zone. And we can obtains the coal width of the limit equilibrium zone formula in the adjacent section.And the result more than approach reasonable.By the principle of the size structure and the limit equilibrium zone,we can obtains result of the.And the reasonable coal pillars width validated by the method of the computer numerical simulation.By the analysis of the character of the deformation and the support technology of the rock around the along roadway,we can obtains the support form in the different periods of the along roadway. The research results in the along roadway's pillars to set up and supporting design to provide the theory basis and the reference.