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首页> 外文会议>Proceedings of 2009 international symposium on risk control and managment of design, construction and operation in underground engineering >Time Effect Study of Mudstone Mechanical Parameters
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Time Effect Study of Mudstone Mechanical Parameters

机译：泥岩力学参数的时间效应研究

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摘要

The deformation modulus (E), cohesion (C) and internal friction angle (φ) are the three basic mechanical parameters in the construction of underground engineering, which gradually degrade with time and stress. In this paper, the degradation regularities of above three parameters (E, C, and φ)in the process of mudstone creep were investigated. And, the value of E, C, and φ were degraded exponentially with viscoplastic strain (εvp) which was used as a degradation index for mechanical parameters. The values of E, C and φ of mudstone destroyed were calculated. Analyzing relationship between E、C、φ andεvp, the three coupling functionalequations which indicated the influence of E、C、φ on stress (σ) and time (t) were obtained respectively. This study lays a foundation for the further establishment of construction of underground engineering.
机译：变形模量（E），内聚力（C）和内摩擦角（φ）是地下工程施工中的三个基本力学参数，随时间和应力而逐渐降低。本文研究了以上三个参数（E，C和φ）在泥岩蠕变过程中的降解规律。而且，E，C和φ的值被粘塑性应变（εvp）指数降低，该粘塑性应变被用作机械参数的退化指标。计算了破坏的泥岩的E，C和φ值。通过分析E，C，φ和εvp之间的关系，得到了三个耦合方程，分别表明了E，C，φ对应力（σ）和时间（t）的影响。该研究为进一步建立地下工程建设奠定了基础。

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