›› 2009, Vol. 30 ›› Issue (12): 3569-3573.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Experimental research on acoustic and dissolved properties of stress damaged salt rock

JIANG De-yi1, CHEN Jie1, LIU Jian-ping1, 2, ZHOU Li-jun1, WANG Chun-rong1   

  1. 1. Key Laboratory for the Exploitation of Southwestern Resources & the Environmental Disaster Control Engineering of Education Ministry, Chongqing University, Chongqing 400044, China; 2. School of Environment and Resources, Southwest University of Science and Technology, Mianyang 610010, China
  • Received:2009-08-15 Online:2009-12-10 Published:2010-01-18

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Abstract:

In this paper, acoustic wave technology was used to study the damaged characteristics of salt rock under uniaxial loading and the effect of damage on dissolution to reveal the parietal injury dissolved characteristics in salt cavity construction period. The study shows that: when the stress increases, the lateral velocity, unlike axial velocity gradually decreasing, decreases rapidly when reaching the ultimate strength. The greater is the pressure on rock salt, the faster is the salt rock dissolving. Based on the analysis of rock strength theory and damage theory, we conclude that the stress damage of salt rock is caused by the increase of micro-cracks resulting from crystal dislocation with each other. The damage variable and stress are closely related. The rock salt dissolution rate increases with the damage variable growing.

Key words: salt rock, uniaxial load, acoustic wave, damage, dissolution

CLC Number: 

  • TU 45
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