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为了研究复杂地形黄土斜井开挖数值模型,分析开挖前后坡体稳定性和斜井结构安全性,优化设计施工方案,采用有限元强度折减法分析坡体稳定性,通过对比不同开挖方式下斜井的变形特点和应力分布规律,提出斜井开挖及支护优化方案。研究表明,根据实际地形采有限元方法模拟开挖过程、采用强度折减法分析坡体稳定性,不需要简化地形,可实现斜井开挖工况模拟和安全分析,对斜井设计和施工具有积极的指导作用。(图6,表1,参6)
In order to study the numerical model of loess inclined shaft excavation in complex terrains, the slope stability before and after excavation and the structural safety of inclined shaft were analyzed, and the design scheme was optimized. The stability of slope body was analyzed by finite element strength reduction method. By comparing different excavation methods The deformation characteristics and stress distribution of the inclined shaft, proposed the optimum scheme for the excavation and support of the inclined shaft. The results show that the method of strength reduction can be used to simulate the excavation process according to the actual terrain mining finite element method and do not need to simplify the terrain to simulate and analyze inclined shaft excavation conditions. Positive guiding role. (Figure 6, Table 1, reference 6)