A Study On Stress Distribution Of Rock Mass In Underground Engineering And Its Application

In recent years,with the rapid development of underground engineering,thegrowing stability problem of surrounding rock has produced when peopledevelop the underground and use underground resources. When we conductunderground construction,the rood will falling,tension crack and surroundingrock will damage,resulting serious threat to the safety production ofunderground engineering and mineral resources,so carring out the study ofstability of surrounding rock has great significance.With the development ofcomputer technology,it is feasibility to do simulation analysis of undergroundworks using the numerical simulation software,and the software of FLAC^3Dforthe analysis of geotechnical materials has great applicability.Using the softwareof FLAC^3Dcan analyze the stress distribution law of surrounding rock andevaluate the stability of surrounding rock.This paper discusses the present research status and method of the stabilityof surrounding rock at home and abroad,then the stress distribution law and thecharacteristics of rock deformation on surrounding rock have been studied, themain influencing factors of surrounding rock are summarized. Using thesoftware of FLAC^3D,the paper study the supporting performance of fillingmaterials and the distribution law of stress or the characteristics of strain onsurrounding rock of stope in the process of filling and mining. The basicprinciples of numerical analysis software FLAC^3Dare studied which based onFDM, constitutive model also be discussed. Though simulating on mine withFLAC^3D,the distribution law of stress and the characteristics of strain or the areaof plastic strain are obtained on mining and filling situations,and the stress areasand deformation zone have been plotted. Though evaluating the stability ofsurrounding rock,the conclusion has obtained,and can be a reference to mineexploitation.