声波测试法在判别地下厂房EDZ中的应用
发布时间：2018-12-10 15:52
【摘要】：洞室开挖不可避免地会损伤岩体,对于规模巨大、布置异常复杂的水电地下厂房围岩尤甚,合理地确定开控损伤区(EDZ)分布成为地下洞室的信息化设计、施工和安全运营的关键性问题.在引入EDZ概念及强EDZ、弱EDZ和基本未损区分区的基础上,提出采用声波测试方法来确定强EDZ和弱EDZ的分布.将声波波速-深度曲线划分为Ⅰ型、Ⅱ型和Ⅲ型等3种曲线类型,根据曲线特征点,对EDZ进行定性、半定量的初判.根据波速计算得出的损伤因子D,对强、弱EDZ和基本未损区进行定量的判别.首次提出的基于声波测试法,定性、半定量和定量相结合的综合研判法具有创新性,为客观评价地下洞室EDZ提供了科学的方法.
[Abstract]:The excavation of the cavern will inevitably damage the rock mass, especially for the surrounding rock of hydropower underground powerhouse with large scale and complex layout. The reasonable determination of the (EDZ) distribution of the open and control damage zone becomes the information design of the underground cavern. Key issues in construction and safe operation. On the basis of introducing the concept of EDZ, strong EDZ, weak EDZ and basic undamaged zone partition, a sound wave testing method is proposed to determine the distribution of strong EDZ and weak EDZ. The sonic wave velocity-depth curve is divided into three types: type 鈪，
本文编号：2370837
[Abstract]:The excavation of the cavern will inevitably damage the rock mass, especially for the surrounding rock of hydropower underground powerhouse with large scale and complex layout. The reasonable determination of the (EDZ) distribution of the open and control damage zone becomes the information design of the underground cavern. Key issues in construction and safe operation. On the basis of introducing the concept of EDZ, strong EDZ, weak EDZ and basic undamaged zone partition, a sound wave testing method is proposed to determine the distribution of strong EDZ and weak EDZ. The sonic wave velocity-depth curve is divided into three types: type 鈪，
本文编号：2370837
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