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Synchronous double-liquid grouting device and method

A double-liquid grouting and synchronous grouting technology, which is applied in mining equipment, shaft equipment, earthwork drilling and mining, etc., can solve the problems of surface pipeline and building damage, large floating amount of segments, long solidification time, etc., to prevent Segment floats up, easy to use, and relieves the effect of surface subsidence

Pending Publication Date: 2021-10-29
CHINA RAILWAY TUNNEL +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention relates to a synchronous double-fluid grouting device and method. The current synchronous grouting material is mortar, which has a long solidification time, resulting in a large floating amount of segments and large post-construction settlement. Especially in shallow overlying soil layers, it is easy to cause surface pipelines And the problem of building damage, through the synchronous double liquid grouting device and method to solve the above problems

Method used

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  • Synchronous double-liquid grouting device and method
  • Synchronous double-liquid grouting device and method
  • Synchronous double-liquid grouting device and method

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Embodiment 1

[0034] refer to Figure 1 to Figure 3 , the present invention provides a synchronous two-liquid grouting device, including a mortar pipeline 3, a mixing device 5, and a water glass pipeline 8, the mixing device 5 is provided with three joints, and the first joint of the mixing device 5 is connected to the shield tail for synchronous grouting The pipeline 11 , the second joint of the mixing device 5 communicates with the mortar pipeline 3 , and the third joint of the mixing device 5 communicates with the water glass pipeline 8 . Mortar and water glass are injected into the shield tail grouting pipeline at the same time, and are filled at the outlet of the synchronous grouting slurry to the back space of the outer periphery of the shield segment to form a synchronous grouting slurry filling body. The cement will solidify and harden in a short time, so that the mortar after mixing will be shortened than the original solidification time, optimize the initial setting effect, wrap a...

Embodiment 2

[0042] Such as figure 1 , 2 , 3, and 4, the difference between this embodiment and embodiment 1 is that the mixing device 5 is provided with four joints, which are four-way. Two of the joints can be selected to be connected to the mortar pipeline 3, which can increase the efficiency of mortar injection and ensure that the injection volume ratio of mortar and water glass is controlled within the required range. The mixing device 5 is provided with four joints, and on the basis of the use principle of the three-way joint, the extra joints can also be selected to be temporarily disabled, and then enabled in case of other special circumstances.

Embodiment 3

[0044] Such as figure 1 , 2 , 3 and 4, the difference between the present embodiment and embodiment 1 is that the mixing device 5 includes a water glass joint 51 and a mortar pipe joint 52, and the water glass joint 51 is sleeved in the mortar pipe joint 52. Water glass joint 51 comprises water glass joint import 511, and water glass joint import 511 is connected with water glass pipeline 8; The water glass joint 51 is sleeved in the mortar pipe joint 52 to facilitate installation and disassembly, while the mortar and the water glass inlet are separated by partitions to avoid direct reaction and uneven reaction between the mortar and the water glass, and can effectively prolong the coagulation time of the mortar and the water glass.

[0045] The diameter of the inner chamber of the water glass joint 51 decreases gradually from the inlet to the outlet, and a water glass nozzle 512 is provided at the outlet of the water glass joint 51 . The inner cavity of the water glass join...

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Abstract

The invention discloses a synchronous double-liquid grouting device and method. The synchronous double-liquid grouting device comprises a mortar pipeline (3), a mixing device (5) and a water glass pipeline (8), the mixing device (5) is provided with three or more connectors, a first connector of the mixing device (5) communicates with a shield tail synchronous grouting pipeline (11), a second connector of the mixing device (5) communicates with the mortar pipeline (3), and a third connector of the mixing device (5) communicates with the water glass pipeline (8). According to the synchronous double-liquid grouting method, mortar and water glass are injected according to the volume ratio of 20 to 1. The synchronous double-liquid grouting device is simple and ingenious in structure, the initial setting effect of the mortar can be optimized, pipe piece floating is slowed down, ground subsidence is avoided, and the synchronous double-liquid grouting device has extremely high application and popularization value.

Description

technical field [0001] The invention belongs to the technical field of shield tunneling, and in particular relates to a synchronous double-fluid grouting device and method during shield tunneling construction. Background technique [0002] During the shield tunneling construction process, there are gaps in the excavation profile of the cutter head compared with the outer diameter of the assembled segment. During the advancement of the shield, the outer gap of the segment needs to be filled evenly. At present, the synchronous grouting materials are Mortar has a long solidification time, resulting in large floating volume of segments and large settlement after construction, especially in shallow overlying soil layers, which can easily cause damage to surface pipelines and buildings, causing extremely bad social impact. With the development of cities, super-large diameter mud-water shields are becoming more and more common, and the requirements for surface settlement in the mai...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D9/06E21D11/08E21D11/10E21F17/00E21F17/18
CPCE21D9/0607E21D11/10E21D11/105E21D11/08E21F17/18E21F17/00
Inventor 谢文斌李东泰刘江袁逢逢李亚超李洪哲陈智峰赵琪唐均利赵康
Owner CHINA RAILWAY TUNNEL