The Deformation Of Roadway Surrounding Rock In Deep Research On The Function And The Anchor Solid Coupling

For coal resources,the amount of reserves in the shallow areas is gradually less,so to the deep development has become the majority of coal enterprises to ensure continued production of the inevitable choice.Under the condition of deep mining,the stability of the mining roadway is greatly changed,and the roadway is easy to be broken,it is difficult to maintain and the deformation is large.At the same time,under the conditions of deep mining,the structural stress and the stress of the roadway are significantly improved,which increases the difficulty of supporting the support.Not only that,the deep roadway surrounding rock is also facing the "three high and one disturbance" that is high ground pressure,high ground stress,high ground temperature and strong mining disturbance caused by the complex geological environment.The traditional method of roadway support can not adapt to the deep mining roadway,and the emerging "anchor net" joint support method and lack of deep mining environment related to the theoretical research.In this paper,the damage mechanism of the surrounding rock in the deep mining roadway is studied by using the knowledge of elasto-plastic mechanics.The deformation and failure of the roadway are mainly affected by the thickness of the surrounding rock,and the elastic modulus of the anchor Weaken the Poisson's ratio to improve the rigidity of the anchor,to achieve the anchor and the surrounding rock deformation in the stiffness of the coupling;when the cable is supported,it plays the role of suspension,and uses the strong tensile strength of the anchor to increase the overall stability of the anchor,so that the anchor and the surrounding rock deformation in the structure to achieve coupling to control the deformation of the surrounding rock;anchor simulation of finite difference software FLAC3D,cable with different length and spacing of the supporting effect,get the plastic zone graph,stress and vertical stress nephogram analysis,the simulation results of bolt length of cable coupling support when the distance between the rows and the anchor szob scheme.Finally realize the coupling of deep roadway surrounding rock deformation and anchor stiffness and structure,so as to control the deformation of surrounding rock.