作者：
Wen, Lei*;Luo, Zhou Quan;Yang, Shi Jiao;Qin, Ya Guang;Ma, Shao Wei;...
期刊：
ROYAL SOCIETY OPEN SCIENCE,2019年6(3):181591 ISSN：2054-5703
通讯作者：
Wen, Lei
作者机构：
[Wen, Lei; Luo, Zhou Quan; Ma, Shao Wei; Jiang, Hong; Qin, Ya Guang] Cent S Univ, Sch Resources & Safety Engn, Changsha 410083, Hunan, Peoples R China.;[Yang, Shi Jiao] Univ South China, Sch Nucl Resources Engn, Hengyang 421001, Peoples R China.
通讯机构：
[Wen, Lei] C;Cent S Univ, Sch Resources & Safety Engn, Changsha 410083, Hunan, Peoples R China.
关键词：
P-wave velocity;damage index;integrality coefficient;point load strength;rock mass
摘要：
The damage index is a crucial controlling parameter for rock mass strength and deformation in civil, geological and mining engineering projects. In this study, a new method was proposed for computing the damage index of a rock mass based on the field point load strength. This method provides a strength ratio whose numerator is the point load strength (PLS) of splitting along the pre-existing joint and whose denominator is the PLS of intact rock failure. To validate this method, the authors derived a relationship between the damage index and the integrality coefficient using an empirical relation. Moreover, numerous experimental tests were conducted, including P-wave testing and on-site point load testing. Finally, linear regression analysis was performed to analyse the correlation between the new damage index D R and the integrality coefficient K V . This study demonstrates that the presented new method is sensitive to both plasticity and damage in estimating the damage degree of rock masses in underground excavation and tunnel engineering.
作者机构：
[文磊; 罗周全; 汪伟; 郑开欢] School of Resources and Safety Engineering, Central South University, Changsha;410083, China;[杨仕教] Nuclear Resources Engineering College, University of South China, Hengyang;421001, China;[文磊; 罗周全; 汪伟; 郑开欢] 410083, China
通讯机构：
[Wen, L.] S;School of Resources and Safety Engineering, China
作者：
Wang Fu-lin;Wang Zhong-kang;Yang Shi-jiao*;Tang Zi-an;Liu Jie
作者机构：
[Liu Jie; Wang Zhong-kang; Yang Shi-jiao; Wang Fu-lin] Univ South China, Sch Nucl Resources Engn, Hengyang 421001, Peoples R China.;[Tang Zi-an] Yiyang Cent Hosp, Yiyang 413000, Peoples R China.
会议名称：
5th International Conference on Civil Engineering and Transportation (ICCET)
会议时间：
NOV 28-29, 2015
会议地点：
Guangzhou, PEOPLES R CHINA
会议主办单位：
[Wang Fu-lin;Wang Zhong-kang;Yang Shi-jiao;Liu Jie] Univ South China, Sch Nucl Resources Engn, Hengyang 421001, Peoples R China.^[Tang Zi-an] Yiyang Cent Hosp, Yiyang 413000, Peoples R China.
会议论文集名称：
AER-Advances in Engineering Research
关键词：
High sulfur tailings;Blast furnace water quenching slag;Filling;Uniaxial compressive strength
摘要：
In order to solve the problem of low strength and disintegrate easily using ordinary Portland cement-high sulfur tailings filling, we used blast furnace water quenching slag instead of Portland cement which was regarded as cement material to manufacture whole tailings paste for underground filling. We manufactured filling with blast furnace water quenching slag-high sulfur tailings and ordinary Portland cement on the base of analyzing the physicochemical property of whole tailings and blast furnace water quenching slag. Then we manufactured the standard test blocks to cure, and studied the strength of filling with different cement materials in accordance with uniaxial compressive test by the application of the machine of DYE-300 single shaft material test. Compared with cement filling, experimental results show that the strength of blast furnace water quenching slag, early stage or late stage, has a higher strength. And, moreover, it can solve the disintegrating problem caused by ordinary Portland cement-high sulfur tailings filling in the late stage.
