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Study on Mountain Deformation Mechanism and Management of Yanchi Mountain in Jinan

Author: LiKeJian
Tutor: YouChunAn
School: Shandong University of Science and Technology
Course: Geotechnical Engineering
Keywords: Mined-out area Ore pillars Numerical analysis Strength reduction Deformation mechanism Strengthening governance
CLC: TD325
Type: Master's thesis
Year: 2010
Downloads: 32
Quote: 0
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The mining industry has a long history in China, nevertheless, lots of gob areas left by early immethodical exploitation in the shallow part cause the ground surface to crack and collapse or other geological disasters with the growth of time, which not only destroys the land resources, but also threatens people’s production and living safety r seriously.Aimed at the geological disasters such as mining collapse, rock-avalanche, unstable slope that have emerged in YanChi Mountain in JiNan, further study on the deformation mechanism of YanChi Mountain was carried out and specific treatment scheme was proposed. On the basis of extensive reading with the research on mined-out area, YanChi Mountain and its mined-out area were simulated numerically by the finite element numerical analysis method and the mechanical effect of goaf and its ore pillar on surrounding rocks was studied. The ore pillars’mechanism of crack propagation and deformation rule was discussed simultaneously based on theory of fracture and damage mechanics, based on which comprehensive treatment scheme by the reinforcement of the original pillar and new increase of artificial pillars was proposed. The reliability of the program was analyzed by numerical simulation and the safety factor of strengthening governance programs was calculated by strength reduction finite element method. Through the comparison with other mined-out areas’treatment options, the feasibility and rationality of the treatment scheme that proposed in this article was verified. The topic has provided a new way for the treatment research of mined-out area and some reference on governing the geological disaster that caused by mined-out area.

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CLC: > Industrial Technology > Mining Engineering > Mine the pressure and support > Rock pressure and rock movement > Rock movement
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