Study On The Technology Of Reinforcing The Floor Roadways Under Locomotive And Faults Influence

This paper combine 13218w working face of Xieqiao coal mine in Huainan and supporting status of-610m east 1 B6 floor roadway.analysis of both inside and outside lane segment surrounding rock bottom section stress distribution and characteristics of deformation and failure which affected by coal mining. This paper use FLAC2D numerical simulation, theoretical analysis and on-site measurement comprehensive analysis of research methods, which carried out depth analysis and study on the fault fracture zone and the adjacent coal and rock mining affected by the stress distribution characteristics of rock deformation control laws. The study have obtained the floor tunnel distribution of the plastic zone, surrounding rock stress distribution and deformation and failure patterns which affect by the double impact of the fault fracture zone and the coal mining.The result shows that the development of fault rocks in the fault fracture zone floor formed inside a low-stress areas, while the formation of coal and rock mass in the vicinity of high stress concentration area, and which dramatic impact of the range of 10 m-40m, when the coal mining near the fault plane, the vertical stress transmission by the fault fracture zone inhibition, which bring about severe scratching move, and bring about the stress asymmetry in the last plate and lower plate rock, accord to research the different inclination angle faults and seam mining in different directions to promote, this paper have concludes that the destruction of floor depth and extent of damage increases as the fault dip decreases, with the working face and the distance from the fault fracture zone decreases, when faults tend to forward mining, the fault has been compaction, the floor is relative stability which compared with reverse faults tend to mining, comparative analysis of roadway the simulation results of different lithology conditions, and obtained the scope of stress influence and range of plastic deformation in the fault rocks situation is bigger than the roadway in the normal rock.