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Title: |
Finite Element Analysis of Rock Damage Hollow Outside Shaft Wall Lining and Grouting |
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Source: |
International Mining Forum (IMF 2010 E-BOOK)
(pp 82-86)
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Author(s): |
Xiangdong Zhang, Institute of Civil Engineering and Transportation, Liaoning Technical University , Fuxin China 123000
Xiaowen Yin, Institute of Civil Engineering and Transportation, Liaoning Technical University , Fuxin China 123000
Shukun Zhang, Institute of Civil Engineering and Transportation, Liaoning Technical University , Fuxin China 123000 |
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Abstract: |
Crushing sand and vertical cavity wall have been threatening the safety of coal mine in production, theanalysis about destroyed vertical stability and processing method are concerned. This paper used the FEMsoftware ADINA, with the combination of Mohr - Coulomb criterion and tensile failure criteria ,andsimulate the damage of the wall cavity and grouting according to the inspection at original space, the basicrules among them had been studied. According to the result of analysis, grouting scheme was formulated.The analysis about numerical simulation shown that: crushing sand and vertical cavity wall would have anadverse effect on the stability of shaft body and it could cause the land subsidence; Grouting pressure has adirect impact on the stability of shaft body. When grouting pressure was large enough, the vertical stresscould appear shaftlining pull pressure; It could lead to wall the rupture of the wall.
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