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Grouting slurry for reinforcement in tunnel hole and grouting method

A grouting and grout technology, applied in tunnels, earth-moving drilling, mining equipment, etc., can solve problems such as easy line intrusion and deformation of supporting arches

Active Publication Date: 2021-10-01
核工业华东建设工程集团有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of this, the main purpose of the present invention is to solve the technical problems of easy line invasion and deformation of the supporting arch when the tunnel passes through the loose accumulation stratum.

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  • Grouting slurry for reinforcement in tunnel hole and grouting method

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[0013] The application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain related inventions, rather than to limit the invention. It should also be noted that, for the convenience of description, only the parts related to the related invention are shown in the drawings. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and embodiments.

[0014] This application provides a grouting slurry for reinforcement in tunnels, including A slurry and B additives; the A slurry is first stirred by cement and water according to the ratio of water-cement ratio 1 to 1.2:1 during the grouting process , and then stirred according to t...

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Abstract

The invention provides grouting slurry for reinforcement in a tunnel hole and a grouting method. The grouting slurry comprises slurry A and an additive B; the slurry A is prepared by stirring cement and water according to a water-cement ratio of 1: 1 in a grouting process and then stirring according to a water-cement ratio of (0.8-0.9): 1; the additive B is prepared from an accelerator and a high polymer material solution according to the volume ratio of 1: 1 in the grouting process, and the mass of the accelerator and the mass of the high polymer material solution both account for 3%-5% of the mass of the cement. The diffusion range of the slurry is controlled by controlling the gelation time of the slurry, so the purpose of controlling the reinforcement range is achieved; the strength of a slurry stone body in preset time is controlled by adjusting the adding ratio of the accelerator to the high polymer material solution, it is guaranteed that collapse does not occur during excavation of a tunnel face, tunneling of a tunnel is facilitated, and the technical problems that when a tunnel penetrates through a loose accumulation body stratum for construction, line invasion and deformation of a supporting arch frame are prone to occurring are solved.

Description

technical field [0001] The invention relates to the field of tunnel construction, in particular to a grouting slurry and a grouting method used for reinforcement in tunnel holes. Background technique [0002] In the tunnel construction, there will be loose accumulation strata. The soil-rock mixture in the loose accumulation stratum is a geological body between the rock and the soil. Due to the large difference in particle size of the rocks in the stratum, the porosity of the stratum is large. There are differences between grouting in deposit formation and general grouting in rock and soil. The general rock-soil mass grouting is used for loose accumulative strata. Due to the poor stability of the stratum, line invasion and deformation of supporting arches are prone to occur. [0003] Therefore, it is of great significance to develop the tunnel grouting reinforcement process and determine the grout mix ratio data in order to achieve the effect of strengthening the stratum and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/02E21D9/00C04B103/12C04B111/70
CPCC04B28/02E21D9/002C04B2111/70C04B2103/12C04B2111/00724C04B22/10C04B22/064C04B14/303C04B24/04Y02W30/91
Inventor 赵仲明胡晖胡军梁忠旗万怡
Owner 核工业华东建设工程集团有限公司
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