| Development of stability analysis and supporting technology of surrounding rock inMine Roadway has important engineering application value. This article picks area40112working surfaces in Dafosi coal mine as the project backing, By the experimental research,theoretical analysis and field practice combined the methods of work. The main conclusioninclude:（1）Analysis of factors influencing the stability of surrounding rock of roadway, themajor effect factor has the engineering geology factor and the mining coal technology factor.Elasto-plastic analysis of surrounding rock stress, deformation and destruction of roadway byreducing the scope of surrounding rock loose circle so that it is in the mechanics ofElastoplastic deformation state, control of roadway surrounding rock deformation.（2）The experiment obtains the crag physical mechanics parameter of Dafosi coal,provides the effective foundation data for the value simulation. X-ray obtains40112workingsurfaces Gao Lingshi and Al2O3to have the expansive rock ingredient content along thetrough ledger wall in excessively to be high, seriously affect the stability of surrounding rockof roadway.（3）Before the mining face, the surrounding rock loose circle of mining roadway andcutting hole of40112working face is controlled within2.0m, meet the roadway supportrequirements. After the mining face, mining dynamic pressure effect on deep fracture ofsurrounding rock is lesser, roadway surrounding mining influence scope mainly for2.0m,crack before a recovery after stoping, within the scope of0.5m and broken surrounding rocksurface is serious, so need to reinforce the gateway surrounding rock.（4）Evaluation of roadway existing support programs, it will not meet the securityrequirements for picking. Putting the locked the foot steel pipe and note thick liquid and tree root pile and release of pressure trough along the trough, Engineering practice shows that,the roadway floor heave treatment scheme is reasonable. |
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