Research on optimization of U-shaped steel support for deep roadway in complex geological mine

doi:10.16265/j.cnki.issn1003-3033.2018.12.016

Abstract

Abstract: To analyze the optimization problem of U-shaped steel support for deep complex geological roadway, the middle section of -550 in a certain mine in Shandong province was taken as engineering background, a three-dimensional model of deep roadway supporting mechanics was built by using ANSYS finite element method, and the stability of deep roadway surrounding rock was analyzed. The orthogonal test method is used to carry out the orthogonal test on three influencing factors, such as the support spacing of U-shaped steel, lateral stress coefficient and monitoring point. The validity of numerical simulation and orthogonal test was verified by a field blasting seismic test. The results show that when the lateral stress coefficient is less than or equal to 1, the vertical stress plays a dominant role, and that the optimum spacing of U-shaped steel support is 1 m, which can meet the stability requirement of IV class surrounding rock.

Key words: orthogonal method, deep roadway of complex geological mine, U-shaped steel, support optimization, blasting vibration

CLC Number:

X936

WANG Jian, ZUO Yujun, DONG Longjun, WANG Hao, LIU Huaiqian. Research on optimization of U-shaped steel support for deep roadway in complex geological mine[J]. China Safety Science Journal, 2018, 28(12): 96-101.

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