Study On Stability Of The Surrounding Rock When Gangue Doing Filling Body Beside The Gob-lane

Due to the current environmental problems have become increasinglyprominent, the price of unsustainable economic development to pay for theenvironment is also growing, more and more attention of environmentalprotection in the country and the people.In this paper, starting from the bigperspective of environmental protection, we recommend that the waste rockbackfill mined-out area, not only to solve a series of environmental economicsecurity issues caused by waste dump pile, but also to maintain the stability ofmined-out area, making the surface subsidence can be alleviated, significantlyreduce the loss of groundwater,protect the safety of mine workers andequipment, but also in waste-filling replace "three under" coal mined, resultingin huge economic benefits.Gangue backfilling mined-out area has many forms, as Gob-can greatly improve coal recovery rate, reduce the rate of Drifting,ease tensions between mining and realize the advantages of the Y-typeventilation which can solve the problems of corner gas gathering,so this articlefocus on exploring the coal gangue backfilling as the Gob lane beside fillingmaterial, which not only plays a reduction in waste rock, realise the purpose ofprotecting the environment, but also to use Gob many advantages, bring botheconomic and environment benefits.The success of retained roadway along goaf need Lane timbering androadside support coordination,cooperate with each other in large structures andsmall structure,deformation of backfill and coal side and roof deformation phaseadaptation.Gangue due to obtain raw material locally, is used as a long-standingroadside packing material, but because the gangue large amount of compressionunder loading, not enough cutter top resistance can not be timely and effectivelycut off the roof, transport consumes a lot of manpower and material resources,can not be timely bearing and roadway effect poor shortcomings have not beeneffectively resolved, so the gangue backfilling gradually be eliminated.Asenvironmental issues become increasingly prominent and the coal resourcesdepleted, gangue backfilling once again attracted the people to study, but how toimprove the bearing capacity of the gangue is key to the success of the roadway.This paper using theory analysis, similar simulation, laboratory experiment,numerical simulation, field observation of the mining pressure and so on aims atemphasizes on the exploration in Shanxi Tianyi mine3102working face when gangue as gob gateside pack the bolt angle, the amount of gangue bagging, thebag stuffing filling pattern and the gangue body aspect ratio how to effect thestability of the roadway, and put forward to improve the bearing capacity of thegangue reasonable combination of design and test its supporting effect, providesthe technical route of reference to the Protect environment implementation ofgangue backfilling.