充填節理破壞機理及實驗

史玲; 蔡美峰; 趙堅

doi:10.13374/j.issn1001-053x.2012.03.001

充填節理破壞機理及實驗

doi: 10.13374/j.issn1001-053x.2012.03.001

史玲^1,2,
蔡美峰^1,2, ,,
趙堅³

1. 北京科技大學土木與環境工程學院, 北京 100083;
2. 北京科技大學金屬礦山高效開采與安全教育部重點實驗室, 北京 100083;
3. 洛桑聯邦理工學院, 洛桑 CH1015, 瑞士

詳細信息

通訊作者:
蔡美峰,E-mail:caimeifeng@ustb.edu.cn

中圖分類號: TU443
計量
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- PDF下載量: 9
- 被引次數: 0
出版歷程
- 收稿日期: 2011-01-27
- 網絡出版日期: 2021-07-30

Fracture mechanism and experiment of infilled rock joints

SHI Ling^1,2,
CAI Mei-feng^{1,2
, ,},
ZHAO Jian³

1. School of Civil and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China;
2. Key Laboratory for High-efficient Mining and Safety of Metal Mines (Ministry of Education of China), University of Science and Technology Beijing, Beijing 100083, China;
3. Ecole Polytechnique Fédérale de Lausanne, Lausanne CH1015, Switzerland

摘要

摘要: 充填節理的破壞主要有充填物破壞和充填物與節理接觸面破壞兩種形式,其抗剪強度與最小抗剪部分的強度相同.當充填物破壞時,單獨對充填物部分進行受力分析,得到此時的節理抗剪強度公式.討論了充填節理強度隨法向壓應力及充填厚度的變化規律:隨著法向壓應力的增加先增大后減小,但隨充填厚度的變化并不十分明顯.對不同厚度的砂漿充填節理進行直剪試驗.結果表明:其剪切強度與破壞模式有關;在同一破壞模式下,不同充填厚度的節理其剪切強度變化不大.
- 充填節理 /
- 抗剪強度 /
- 充填物 /
- 復合模型 /
- 破壞模式
Abstract: The failure of infilled rock joints can be divided into interface damage and filling damage, which one dominates depends on the stress conditions of the two parts. When the filling was damaged, its plane stress state was analyzed. A theoretical shear strength formula was obtained and the effects of normal stress and filling thickness were studied. With the increase of normal stress the shear strength of infilled rock joints increases first and then decreases, but the influence of filling thickness is not obvious. Some direct shear tests of infilled rock joints were also carried out. The results show that the shear strength is related to the failure modes of the joints, and under the same mode it is independent of filling thickness.
- infilled rock joints /
- shear strength /
- fillers /
- composite models /
- failure modes