A grouting device and grouting method for controlling high-speed railway embankment settlement

A technology for high-speed railways and grouting devices, which is used in roads, soil protection, infrastructure engineering, etc. It can solve problems such as large changes in grouting pressure, large equipment vibration, and stratum changes, reducing vibration and improving uniformity. Effect

Active Publication Date: 2022-04-19
CHINA RAILWAY ENG CONSULTING GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] During the grouting process of the grouting equipment, the grouting pressure of the grouting machine is in a dynamic change process, which leads to a large change in the grouting pressure. Not only the vibration of the equipment is large, but also the grouting pressure cannot be accurately controlled, which is easy cause formation changes

Method used

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  • A grouting device and grouting method for controlling high-speed railway embankment settlement
  • A grouting device and grouting method for controlling high-speed railway embankment settlement
  • A grouting device and grouting method for controlling high-speed railway embankment settlement

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Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0048] Such as figure 1 with figure 2 As shown, this embodiment provides a double-layer self-circulating pressure-maintaining grouting device, including a grouting machine 1, a grouting pump 2 and a grouting pipe 3, and the grouting pump 2 is communicated with the grouting machine 1, so that The grouting pipe 3 includes an inner pipe 4 and an outer pipe 5. The top of the inner pipe 4 is fixedly provided with a fixed disk 26, and the two ends of the outer pipe 5 are open structures, and a fixed ring 27 is arranged at the upper open end. The fixed disk 26 and The fixing ring 27 is threaded and connected, so that the outer pipe 5 is placed on the outer surface of the inner pipe 4; the top of the inner pipe 4 is connected with the connecting pipe 8, and the upper part of the side wall of the outer pipe 5 is connected with a circulation pipe 9, and the connecting pipe 8 And the circulation pipe 9 is connected with the outlet and return port of the external grouting pump 2, thereb...

Embodiment approach 2

[0053] Such as image 3 with Figure 4 As shown, this embodiment discloses a double-layer self-circulating pressure-maintaining grouting device on the basis of Embodiment 1, a grouting machine 1, a grouting pump 2 and a grouting pipe 3, and the grouting pipe 3 includes an inner Tube 4 and outer tube 5, the bottom of the outer tube 5 is an open structure, and the open end of the bottom of the outer tube 5 is connected with a diversion cover 22 for sealing by a screw thread, and the outer edge of the diversion cover 22 is provided with an arc-shaped The second diversion surface 23, the center of the diversion cover 22 is provided with a split column 24 whose top is in contact with the bottom surface of the inner tube 4, and the side of the split column 24 is provided with an arc-shaped first diversion surface 25, and the The first guide surface 25 is smoothly connected with the second guide surface 23 .

Embodiment approach 3

[0055] This embodiment, as another basic embodiment of the present invention, discloses a grouting method for controlling high-speed railway embankment settlement: comprising the following steps:

[0056] S1. Drill the grouting pipe installation holes from both sides of the high-speed railway subgrade to the grouting area directly below the subgrade; and ensure that the grouting pipe installation holes on the left and right sides are drilled alternately;

[0057] S2. Install the grouting pipes in the grouting pipe installation holes, and at the same time group the grouting pipes according to the requirements of the grouting pressure and equipment power, and connect the same group of grouting pipes to the same set of grouting devices;

[0058] S3. Drill a monitoring hole from one side of the railway embankment, and the terminal of the monitoring hole is located between the grouting area and the embankment; install the soil layer deformation sensor in the monitoring hole, and con...

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Abstract

The invention relates to a grouting device and a grouting method for controlling the subsidence of a high-speed railway, including a grouting machine, a grouting pipe and a grouting pump, wherein the grouting pipe includes an inner pipe and an outer pipe nested in each other. The inner pipe and the outer pipe are connected with each other, and the outer pipe is provided with a grout hole; at the same time, the inner pipe and the outer pipe are respectively connected with the grouting pump through the connecting pipe and the circulation pipe; The expansion pipe is connected with the connecting pipe; the invention buffers the grout through the design of the inner and outer pipes, thereby reducing the pressure variation range of the grout; at the same time, it drains to the far end of the grouting pipe through the adjustment of the grout hole diameter and distribution density, thereby ensuring The grout is evenly distributed; the expansion sleeves at both ends of the grouting pipe fix the grouting pipe in the installation hole after expansion, thereby further reducing the vibration of the grouting pipe and improving the quality of grouting; At the top of the pipe, the grouting pipe can be installed at any angle, expanding the scope of application of the grouting pipe.

Description

technical field [0001] The invention relates to the technical field of railway construction, in particular to a grouting device and a grouting method for controlling subsidence settlement of a high-speed railway. Background technique [0002] The grouting method is to use the pressure (hydraulic pressure, air pressure) or electrochemical principle to uniformly inject the grout with gel ability into the voids, cracks and cavities in the soil layer (or rock layer) through drilling holes, and the grout can fill, infiltrate and The original loose and broken rock (soil) layer is cemented into a whole by means of extrusion, and the physical and mechanical properties of the rock (soil) layer (such as the permeability of rock and soil layers, The strength and bearing capacity of rock and soil layers, the deformation of rock and soil layers, etc.) can be improved to form a structure with new structure, high strength, high waterproof performance and good chemical stability to meet var...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D3/12E01B2/00
CPCE02D3/12E01B2/00E01B2204/03
Inventor 刘建友刘方岳岭吕刚谭富圣马福东金张澜王文谦徐品章陈丹康佩彭斌王杨郭磊陈慧李力张延张矿三
Owner CHINA RAILWAY ENG CONSULTING GRP CO LTD
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