Wall Structure Optimization Design On Deep Mine Sandstone Creep Effect

The research background of this paper is a vice-mine. Characteristics of stress and strain ofsurrounding rock creep effect wall structure are researched by theoretical analysis and fieldmeasurement and numerical model with the combination of methods. And on this basis, it isconcluded that casing structure optimization schemes, gained much more fruitful economic andsocial effect.The theoretical solution of creep mechanics parameters of surrounding rock is got by dataprocessing and theoretical analysis of the test data; Elastic-plastic mechanics model, D-P modeland coupling model of creep model is constructed by parameters of the theoretical solution andthe borehole wall creep elastoplastic parameters; the elastic-plastic mechanics model isestablished for the surrounding rock stress release rate was20%. In D-P model and couplingmodel of creep model, creep mechanics parameters is updated by compare of the simulatedresults and measured results. The creep constitutive model parameters is got.On this basis,20kinds of optimization is presented for a1vice-mine Concrete shaftliningstructure. And20kinds of project is optimized in elastic-plastic mechanics model, D-P modeland coupling model of creep model. The results show that in the elastic-plastic mechanicsmodel, the reasonable wall thickness is500mm and600mm and the reasonable concrete gradeis C55、C60and C65. In D-P model and coupling model of creep model Economic andreliable shaftlining structure optimization scheme is got: No.4, The wall thickness is500mmand concrete strength grade is C60. In this paper, the results of the research for wall structuredesign for future has important significance.