The influence of relative humidity on the rate of convergence in an underground gypsum mine

被引：39

作者：

Auvray, Christophe ^{[1
]}

Homand, Francoise ^{[1
]}

Hoxha, Dashnor ^{[1
]}

机构：

[1] Ecole Natl Super Geol, Inst Natl Polytech Lorraine, Lab Environm Geomecan & Ouvrages, F-54501 Vandoeuvre Les Nancy, France

来源：

INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES | 2008年 / 45卷 / 08期

关键词：

Underground mine; Gypsum; Time-dependent behavior; Aging; Pillar;

D O I：

10.1016/j.ijrmms.2008.02.008

中图分类号：

P5 [地质学];

学科分类号：

0709 ; 081803 ;

摘要：

Pillars of gypsum from the underground mine located at Grozon (Jura region, France) reveal degrees of instability that vary depending on the mining period. Observations carried out with a scanning electron microscope (SEM) shed light on the dissolution of gypsum, especially on the walls of pillars and in older zones. The time-dependent behavior of the gypsum is thus investigated in the laboratory and found to be a result of forced relative humidity. Variations of relative humidity have an influence on convergence values that are measured in situ. The analysis of this data reveals seasonal developments that are a function of variations in relative humidity. (C) 2008 Elsevier Ltd. All rights reserved.

引用

页码：1454 / 1468

页数：15

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