Abstract:

Abstract: New ideas and concepts of the shaft structure design was introduced by analyzing characteristics of deep alluvium geological formation conditions, weathered bedrock and gushing water, etc of the deep alluvium of auxiliary shaft in the Xinhu mine. Under the new “code for design of concrete structures” requirements, limit state design method which was based on the probability theory was proposed to solve the problem of thick-walled cylinder structures under biaxial compression and triaxial compression, designed with a partial factor, and combining with specific factors engineering designing itself, the concrete of the relation between the enhanced coefficients are given. In the process of deep alluvium freezing wall design, there were important instructional significance for the well bore construction schedule, safety and economic efficiency.

Key words: Key words: deep alluvium, Xinhu auxiliary shaft, the enhanced coefficient of concrete strength, shaft lining structure