Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Based on Immersion Study on Bearing Characteristics of Roadway Pillar Under Softening
In order to study the influence of coal softening on the retention of coal pillar in the working face, taking the mining of 1314 working face in Xiaoyun coal mine as the engineering background, the variation law of coal pillar lateral bearing pressure before and after water softening is analyzed by FLAC3D numerical simulation, and it is determined that platform wide coal pillar should be selected for water soaking coal pillar. Then the excavation of coal pillar roadway with different width is simulated, and the stable coal pillar range of roadway is obtained. Further simulating the mining of the working face, it is obtained that the stress change in the elastic core area in the coal pillar with different widths basically reaches a stable state at 28 M. Combined with the internal stress change of coal pillar in the mining process, the reasonable reserved width of water immersed wide coal pillar is determined to be 28 M. Through the analysis of microseismic evolution characteristics in the mining process of 1314 working face, the stability of water-soaked wide coal pillar in the mining process is verified. This paper provides a reference for the rational design of roadway pillar under the condition of water immersion and softening.
Based on Immersion Study on Bearing Characteristics of Roadway Pillar Under Softening
In order to study the influence of coal softening on the retention of coal pillar in the working face, taking the mining of 1314 working face in Xiaoyun coal mine as the engineering background, the variation law of coal pillar lateral bearing pressure before and after water softening is analyzed by FLAC3D numerical simulation, and it is determined that platform wide coal pillar should be selected for water soaking coal pillar. Then the excavation of coal pillar roadway with different width is simulated, and the stable coal pillar range of roadway is obtained. Further simulating the mining of the working face, it is obtained that the stress change in the elastic core area in the coal pillar with different widths basically reaches a stable state at 28 M. Combined with the internal stress change of coal pillar in the mining process, the reasonable reserved width of water immersed wide coal pillar is determined to be 28 M. Through the analysis of microseismic evolution characteristics in the mining process of 1314 working face, the stability of water-soaked wide coal pillar in the mining process is verified. This paper provides a reference for the rational design of roadway pillar under the condition of water immersion and softening.
Based on Immersion Study on Bearing Characteristics of Roadway Pillar Under Softening
Lecture Notes in Civil Engineering
Casini, Marco (Herausgeber:in) / Zhang, Yugeng (Autor:in) / Zhu, Yawei (Autor:in) / Zhang, Heng (Autor:in) / Cao, Wenhao (Autor:in)
International Civil Engineering and Architecture Conference ; 2022 ; Singapore, Singapore
Proceedings of the 2nd International Civil Engineering and Architecture Conference ; Kapitel: 22 ; 202-213
13.07.2022
12 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
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