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Article

Research on Seepage of Jointed Rock Mass of Tunnel and Limited Discharge of Grouting

1
School of Civil and Hydraulic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
2
School of Civil Engineering and Environment, Hubei University of Technology, Wuhan 430068, China
3
School of Automobile and Traffic Engineering, Wuhan University of Science and Technology, Wuhan 430081, China
4
MCC Southern City Construction Engineering Technology Co., Ltd., Wuhan 430200, China
*
Author to whom correspondence should be addressed.
Academic Editor: Andrzej Wıtkowskı
Water 2022, 14(1), 104; https://doi.org/10.3390/w14010104
Received: 14 November 2021 / Revised: 15 December 2021 / Accepted: 17 December 2021 / Published: 4 January 2022
(This article belongs to the Section Hydrogeology)
In underground engineering such as tunnel engineering, the condition of surrounding rock such as water-containing jointed rock mass is a common engineering geology. For broken, water-containing surrounding rock, the reasonable measures to prevent and drain water has always been a key issue. Based on the statistical information of the structural surface of the surrounding rock of the Hongtuzhang tunnel, DIPS software was used to classify the structural plane of the tunnel. Based on the statistical analysis of the occurrence, size, and density of the structural plane, the two-dimensional structural plane network model of the rock mass was established, and the permeability tensor (K1 = 1.61 × 10−6 m/s, K2 = 5.78 × 10−7 m/s) was calculated. Consider the worst orientation, the permeability tensor (K1 = 1.61 × 10−6 m/s) was selected to calculate the grouting design. Based on the theory of limited discharge, the influence of parameters of permeability coefficient ratio n and thickness of grouting layer Tg on the tunnel water inflow and lining external water pressure was analyzed. The recommended value of tunnel drainage was 3.0 m3/m∙d, then the corresponding grouting circle parameters were put forward (permeability coefficient ratio n = 100, thickness of grouting layer Tg = 8 m). View Full-Text
Keywords: jointed rock mass; seepage; permeability tensor; permeability tensor of grouting layer; grouting layer thickness jointed rock mass; seepage; permeability tensor; permeability tensor of grouting layer; grouting layer thickness
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MDPI and ACS Style

Zheng, L.; Lian, X.; Huang, D.; Li, X.; Zou, J. Research on Seepage of Jointed Rock Mass of Tunnel and Limited Discharge of Grouting. Water 2022, 14, 104. https://doi.org/10.3390/w14010104

AMA Style

Zheng L, Lian X, Huang D, Li X, Zou J. Research on Seepage of Jointed Rock Mass of Tunnel and Limited Discharge of Grouting. Water. 2022; 14(1):104. https://doi.org/10.3390/w14010104

Chicago/Turabian Style

Zheng, Lifei, Xingwei Lian, Dan Huang, Xiaoqing Li, and Jinzhou Zou. 2022. "Research on Seepage of Jointed Rock Mass of Tunnel and Limited Discharge of Grouting" Water 14, no. 1: 104. https://doi.org/10.3390/w14010104

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