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化学腐蚀作用下围岩的动态力学性能(PDF)

《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

Issue:
2014年06期
Page:
175-178
Column:
研究简报
publishdate:
2014-12-09

Article Info:/Info

Title:
Dynamic mechanical properties of surrounding rock in the circumstance of chemical corrosion
Article ID:
1000-2006(2014)06-0175-04
Author(s):
LIU Yongsheng DIAO Xinhong CHEN Zhanglin YANG Mengmeng
School of Civil Engineering and Architecture, East China Jiaotong University, Nanchang 330013, China
Keywords:
rock dynamics chemical corrosion dynamic properties coupling effect
Classification number :
TD315
DOI:
10.3969/j.issn.1000-2006.2014.06.033
Document Code:
A
Abstract:
Based on the characteristics of multi-field coupling of deep underground engineering, the chemical solutions with different ions, different pH were prepared. Three kinds of rock samples of gray limestone, siltstone and reddish limestone were taken from the project site. The specimens were maintained in the solution, and then the dynamic compression experiment were conducted by SHPB, analyzing the chemical corrosion. Chemical corrosion-temperature coupling and chemical corrosion-damage coupling effect on the dynamic properties and theirs mechanism. The results showed that the dynamic strength of surrounding rock decreased after maintanined in chemical solution, the strength of gray limestone, reddish limestone and siltstone decreased by 25.8%, 54% and 79.5%, and with acidity of solution increasing, the chemical corrosion-damage coupling and the chemical corrosion-temperature coupling existing, the strength decreased very obviously.

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Last Update: 2014-12-31