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The Study on the Mechanism and the Control Technology of Soft Rock Roadway Floor Heave Mine in Bin Chang Mining Area Hu Jiahe Coal

Author: ZhuoQingSong
Tutor: WuYongPing
School: Xi'an University of Science and Technology
Course: Mining engineering
Keywords: Soft rock roadway Complex floor heave Mechanics model Floor heavedeformation control
CLC: TD353
Type: Master's thesis
Year: 2012
Downloads: 103
Quote: 0
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Abstract


It is often happened that floor can deformation in weak rock roadeway.Floor heave is afloor deformation phenomenon that often happens in soft rock roadways. Serious floor heavecan reduce the section area,hinder the ventilation,increase the maintenance cost,reduce theproduction efficiency of coal mine.On the basis of shaft sump surrounding rock control,thispapere analyzes the reason for the deformation of laneway,determined the deformation typesas complex floor heave.Combine with the surrounding rocks deformation monitoring,discusses the processes of floor damage and the severity of floor heave. By pressuredistribution curve of roof and floor analog simulation laboratory pressure distribution curveinspired, puts forward floor mechanical model, analyzes the influencing factors on thestability of surrounding rock and the surrounding rock stress distribution.To these factors asthe basis, put forward the new support scheme. Floor deformation for using the arch and floor,the deepening of key parts of bolts and strengthen support treatment, enhance the effect ofbottom water. Make floor rock roadway stability can help supporting of roadway and toptightly together, work together to maintain the stability of the roadway. Field monitoringanalysis shows that the scheme can control the roadway deformation, can fully meet theproduction requirements, for field solved practical problems, the same kind of roadwaymining area for nearby of the floor deformation problems to provide the basis.

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CLC: > Industrial Technology > Mining Engineering > Mine the pressure and support > Mine support equipment > Roadway support
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