A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Study on Zoning of Overburden Strata and Roadway Deformation of Ascending Mining in Thin Coal Seam
In order to solve the problems appeared in mining process of upper seam in Xiaohezui coal mine, a technical scheme of ascending mining was put forward. UDEC, a discrete element numerical simulation soft was used to study the characteristics of zoning of overburden strata and the rule of vertical stress distribution of the upper coal, the results show that the upper coal is on the top of the equilibrium belt without step dislocation, the structure of roof stratum and floor stratum stay complete with slight separations, so ascending mining is feasible; the range of the upper coal influenced by the stoping of below working face is -85 m ∼ 65 m, the vertical stress reaches a maximum 15 m ahead the below working face, and reaches a minimum behind it 25 m. It is applied in the engineering practice, the roadway deformation discipline of the upper coal is similar to the distribution rule of vertical stress, provides a theoretical basis for guiding and improving the roadway support of ascending mining.
Study on Zoning of Overburden Strata and Roadway Deformation of Ascending Mining in Thin Coal Seam
In order to solve the problems appeared in mining process of upper seam in Xiaohezui coal mine, a technical scheme of ascending mining was put forward. UDEC, a discrete element numerical simulation soft was used to study the characteristics of zoning of overburden strata and the rule of vertical stress distribution of the upper coal, the results show that the upper coal is on the top of the equilibrium belt without step dislocation, the structure of roof stratum and floor stratum stay complete with slight separations, so ascending mining is feasible; the range of the upper coal influenced by the stoping of below working face is -85 m ∼ 65 m, the vertical stress reaches a maximum 15 m ahead the below working face, and reaches a minimum behind it 25 m. It is applied in the engineering practice, the roadway deformation discipline of the upper coal is similar to the distribution rule of vertical stress, provides a theoretical basis for guiding and improving the roadway support of ascending mining.
Study on Zoning of Overburden Strata and Roadway Deformation of Ascending Mining in Thin Coal Seam
Tang, Jian-Xin (author) / Li, Ya-Lin (author) / Jia, Ya-Jie (author) / Sun, Le-Le (author)
2012
5 Seiten
Conference paper
English
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