Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Adaptive Finite Element Analysis of Stability of Rectangular Cavern
Due to the limitation of topographic conditions and the need of function, the buried depth and span of underground engineering often vary greatly, so it is of great significance to study the influence of the ratio between depth and span on the stability of surrounding rock of tunnel. This paper deduced a formula of surrounding rock pressure by combining with Terzaghi theory and studied the law of surrounding rock pressure changing with ratio between depth and span systematically. The results show that: 1Under the condition of grade IV surrounding rock, the surrounding rock pressure of rectangular cavern increases with the increase of ratio between depth and span. When the ratio between depth and span reaches 2, the surrounding rock pressure gradually tends to be stable. 2 When the ratio between depth and span is less than 2, rectangular cavern is prone to failure through to the surface in the limit state. When the ratio between depth and span is greater than 2, the pressure arch effect appears above the cavern vault. Therefore, the ratio between depth and span equaling to 2 can be used as a reference standard to divide the depth of rectangular cavern.
Adaptive Finite Element Analysis of Stability of Rectangular Cavern
Due to the limitation of topographic conditions and the need of function, the buried depth and span of underground engineering often vary greatly, so it is of great significance to study the influence of the ratio between depth and span on the stability of surrounding rock of tunnel. This paper deduced a formula of surrounding rock pressure by combining with Terzaghi theory and studied the law of surrounding rock pressure changing with ratio between depth and span systematically. The results show that: 1Under the condition of grade IV surrounding rock, the surrounding rock pressure of rectangular cavern increases with the increase of ratio between depth and span. When the ratio between depth and span reaches 2, the surrounding rock pressure gradually tends to be stable. 2 When the ratio between depth and span is less than 2, rectangular cavern is prone to failure through to the surface in the limit state. When the ratio between depth and span is greater than 2, the pressure arch effect appears above the cavern vault. Therefore, the ratio between depth and span equaling to 2 can be used as a reference standard to divide the depth of rectangular cavern.
Adaptive Finite Element Analysis of Stability of Rectangular Cavern
Zhu, Penggang (Autor:in)
25.11.2022
957161 byte
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
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