【摘要】：洞室開挖不可避免地會(huì)損傷巖體,對(duì)于規(guī)模巨大、布置異常復(fù)雜的水電地下廠房圍巖尤甚,合理地確定開控?fù)p傷區(qū)(EDZ)分布成為地下洞室的信息化設(shè)計(jì)、施工和安全運(yùn)營(yíng)的關(guān)鍵性問(wèn)題.在引入EDZ概念及強(qiáng)EDZ、弱EDZ和基本未損區(qū)分區(qū)的基礎(chǔ)上,提出采用聲波測(cè)試方法來(lái)確定強(qiáng)EDZ和弱EDZ的分布.將聲波波速-深度曲線劃分為Ⅰ型、Ⅱ型和Ⅲ型等3種曲線類型,根據(jù)曲線特征點(diǎn),對(duì)EDZ進(jìn)行定性、半定量的初判.根據(jù)波速計(jì)算得出的損傷因子D,對(duì)強(qiáng)、弱EDZ和基本未損區(qū)進(jìn)行定量的判別.首次提出的基于聲波測(cè)試法,定性、半定量和定量相結(jié)合的綜合研判法具有創(chuàng)新性,為客觀評(píng)價(jià)地下洞室EDZ提供了科學(xué)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，

本文編號(hào)：2370837