Grouting Effect on Reinforcement of Weathered Granite

Zhang, Jian; Li, Shucai; Li, Zhaofeng; Zhang, Qingsong; Yang, Lei; Du, Junqi; Li, Hengtian; Qi, Yanhai; Lin, Rongfeng

doi:10.1007/s10706-020-01193-w

Cited by 5 publications

(2 citation statements)

References 23 publications

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“…Grouting Borehole Layout. In order to ensure the water plugging effect of grouting, five ring grouting holes are arranged according to the required thickness of grouting area and effective penetration length of grouting [52]. Drilling also provides testing.…”

Section: Geofluidsmentioning

confidence: 99%

Grouting Treatment of Water and Mud Inrush in Fully Weathered Granite Tunnel: A Case Study

et al. 2020

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When mountain tunnel passes through completely weathered granite strata, water and mud inrush is easy to occur, causing casualties and economic losses. Grouting is a common and effective treatment method for water and mud inrush disaster. The current existing researches focus on theoretical analysis, numerical simulation, and laboratory test, and the researches based on the field of engineering application are few. Based on the fully weathered granite tunnel of Junchang tunnel in Guangxi, this paper studies the grouting treatment of water and mud disaster in the fully weathered granite tunnel. This paper first introduces the geological and hydrological conditions of Junchang tunnel in order to understand the causes of water inrush and mud inrush. Then, the treatment method of full-section curtain grouting is introduced. During the grouting, the combination of exploration and injection is adopted. According to different hydrological conditions, different kinds of grouting materials are adopted. After grouting is completed, Transient Electromagnetic Methods, water inflow analysis, borehole investigation, and P-Q-T method are used to evaluate the grouting effect. According to the reaction of the detection results, the weak part of grouting can be supplemented to improve the grouting quality. The results show that the curtain grouting is effective for the treatment of water-mud inrush disaster in the fully weathered granite tunnel. This study provides a reference for the treatment of water and mud inrush in other similar tunnels.

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Section: Geofluidsmentioning

confidence: 99%

Grouting Treatment of Water and Mud Inrush in Fully Weathered Granite Tunnel: A Case Study

et al. 2020

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“…Xu et al [13] studied the improvement of the performance of ultrafine cement grout with different proportions of auxiliary materials through orthogonal experiments and provided theoretical guidance for the transformation of grouting materials. Zhang et al [14] used orthogonal experiments to optimize the cement grouting materials with different additives and developed a new type of nanocomposite plasticity grouting material to provide a new guide for groundwater gushing disasters. The above research showed the optimal ratio of one or several properties of grouting materials.…”

Section: Introductionmentioning

confidence: 99%

Basic Experimental Study of Plasticity Material for Coal Rock Fracture Grouting Based on RSM-PCA Technology

et al. 2021

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The internal fractures in coal and rock mass are important factors affecting the safety of underground engineering such as coalbed methane exploitation, so the comprehensive properties of materials used to seal the fractures are particularly critical. In this paper, firstly, the indexes of the main factors affecting the plugging material (viscosity, bleeding rate, setting time, and strength) were analyzed. Then, the sensitivity of the materials used to seal the fractures was studied and discussed using a principal component analysis and response surface analysis (RSM-PCA). The primary conclusions are as follows: (1) Bleed rate and setting time were the first principal components affecting the comprehensive properties of the plugging materials, and compressive strength was the second principal component. (2) The regression equation was established to characterize the comprehensive properties of the integrated plugging materials, and the optimal mix ratio was 34% of cement content, 11% of sand content, and 0.53 of the W/C. (3) The microscopic results showed that the silicate minerals in the consolidated body grow in a bridging manner and formed a mixed gel with cement hydration product to fill the pores and microcracks and improved the interface transition zone.

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Managing Inverted Arch Heaving in Sanlian Tunnel: Analysis of Inverted Arch Structure Utilizing Prestressed Anchor Rods

Wang,

Krishta David,

Mansor

et al. 2024

Geotech Geol Eng

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Grouting Effect on Reinforcement of Weathered Granite

Cited by 5 publications

References 23 publications

Grouting Treatment of Water and Mud Inrush in Fully Weathered Granite Tunnel: A Case Study

Grouting Treatment of Water and Mud Inrush in Fully Weathered Granite Tunnel: A Case Study

Basic Experimental Study of Plasticity Material for Coal Rock Fracture Grouting Based on RSM-PCA Technology

Managing Inverted Arch Heaving in Sanlian Tunnel: Analysis of Inverted Arch Structure Utilizing Prestressed Anchor Rods

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