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Classification and engineering application of tunnel surrounding rock based on the relationship between rock mass quality index and rock firmness coefficient
The evaluation of rock mass integrity is of great significance to tunnel engineering. In addition to the number of volumetric joints, the quantitative classification of rock mass integrity mainly relies on wave velocity test to obtain Kv for quantitative classification. As a statistical method to evaluate the quality of rock mass, RQD is also a quantitative analysis method of rock mass integrity. With the development of the Belt and Road construction project, the contradictory situation of different specifications put forward a serious examination of the construction. This paper is based on the principle of volumetric joint equivalence, the empirical formula of volumetric joint coefficient expressed by integrity coefficient(KV)and rock quality index(RQD)was used, and the relationship between KV and RQD was deduced. Based on the principle of equivalent uniaxial compressive strength, used to rock firmness coefficient(f)and rock mass basic quality index(BQ)respectively the rock uniaxial compressive strength of empirical formula, obtained in this paper, the relationship between BQ and f suggested in this paper is obtained, and the corresponding table of the relationship between F Methods and BQ Methods is established. The research results have been successfully applied in the scheme modification and optimization design of the south-north trans-ridge tunnel in Kyrgyzstan, it provides reference for tunnel construction in countries along the “Belt and Road”.
Classification and engineering application of tunnel surrounding rock based on the relationship between rock mass quality index and rock firmness coefficient
The evaluation of rock mass integrity is of great significance to tunnel engineering. In addition to the number of volumetric joints, the quantitative classification of rock mass integrity mainly relies on wave velocity test to obtain Kv for quantitative classification. As a statistical method to evaluate the quality of rock mass, RQD is also a quantitative analysis method of rock mass integrity. With the development of the Belt and Road construction project, the contradictory situation of different specifications put forward a serious examination of the construction. This paper is based on the principle of volumetric joint equivalence, the empirical formula of volumetric joint coefficient expressed by integrity coefficient(KV)and rock quality index(RQD)was used, and the relationship between KV and RQD was deduced. Based on the principle of equivalent uniaxial compressive strength, used to rock firmness coefficient(f)and rock mass basic quality index(BQ)respectively the rock uniaxial compressive strength of empirical formula, obtained in this paper, the relationship between BQ and f suggested in this paper is obtained, and the corresponding table of the relationship between F Methods and BQ Methods is established. The research results have been successfully applied in the scheme modification and optimization design of the south-north trans-ridge tunnel in Kyrgyzstan, it provides reference for tunnel construction in countries along the “Belt and Road”.
Classification and engineering application of tunnel surrounding rock based on the relationship between rock mass quality index and rock firmness coefficient
Atlantis Highlights in Engineering
Abomohra, Abd El-Fatah (Herausgeber:in) / Su, Rongkui (Herausgeber:in) / Rahman, Md Wasikur (Herausgeber:in) / Wen, Jiwei (Herausgeber:in) / Hou, Huxiang (Autor:in) / Zhao, Yirui (Autor:in) / Li, Jie (Autor:in) / Song, Zhanping (Autor:in) / Tao, Xianze (Autor:in) / He, Shixiong (Autor:in)
International Conference on Advances in Energy Resources and Environment Engineering ; 2023 ; Sanya, China
14.05.2024
10 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
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