An X-ray computed tomography-based index to characterize the quality of cataclastic carbonate rock samples

被引：41

作者：

Christe, P. ^{[1
]}

Turberg, P. ^{[1
]}

Labiouse, V. ^{[2
]}

Meuli, R. ^{[3
]}

Parriaux, A. ^{[1
]}

机构：

[1] Fed Inst Technol Lausanne, ENAC Fac, Civil Engn Inst, Lab Engn & Environm Geol, CH-1015 Lausanne, Switzerland

[2] Fed Inst Technol Lausanne, ENAC Fac, Civil Engn Inst, Rock Mech Lab, CH-1015 Lausanne, Switzerland

[3] Univ Hosp Lausanne CHUV, Dept Med Radiol, Serv Radiodiagnost & Intervent Radiol, CH-1011 Lausanne, Switzerland

来源：

ENGINEERING GEOLOGY | 2011年 / 117卷 / 3-4期

基金：

瑞士国家科学基金会;

关键词：

X-ray computed tomography; Rock quality index; Rock classification; Weak rock; Cataclastic carbonate rock; Rock core sample; ENGINEERING PROPERTIES; MASS STRENGTH;

D O I：

10.1016/j.enggeo.2010.10.016

中图分类号：

P5 [地质学];

学科分类号：

0709 ; 081803 ;

摘要：

X-ray computed tomography (XRCT) can reconstruct, in a nondestructive way and in three-dimension, the distribution of densities within opaque materials. Consequently, it provides an effective possibility to characterize the inner content of rock core samples and, in particular their alteration products sensu lato which generally appear less dense than the intact rock matrix. In this paper, a new index, based on XRCT data, is tested for evaluating the degree of alteration of highly tectonized carbonate rock samples and is compared with visual-based classification systems. This XRCT-based analysis leads to a diagnosis of alteration which appears objective, precise and in agreement with the visual observations. Besides, this method takes into account the entire volume of the sample, is rapid to carry out and allows an intact rock core to be used for further laboratory testing. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：180 / 188

页数：9

共 24 条

[1]

[Anonymous], EXPLORATION ROCK ENG

[2] Some new Q-value correlations to assist in site characterisation and tunnel design [J].