Double-layer self-circulation pressure-maintaining grouting pipe

A technology of grouting pipe and circulating pipe, applied in soil protection, construction, infrastructure engineering and other directions, can solve the problems of poor grouting uniformity and poor stability of grouting pipe, so as to reduce vibration, avoid vibration and improve uniformity Effect

Active Publication Date: 2021-06-18
CHINA RAILWAY ENG CONSULTING GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a double-layer self-circulating pressure-maintaining grouting pipe to improve the defects of poor stability and poor grouting uniformity of the grouting pipe. In order to achieve the above object, the technical scheme adopted by the present invention is as follows:

Method used

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  • Double-layer self-circulation pressure-maintaining grouting pipe

Examples

Experimental program
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Effect test

Embodiment approach 1

[0042] Such as Figure 1 to Figure 3 As shown, this embodiment provides a double-layer self-circulating pressure-maintaining grouting pipe, including a grouting pipe 1, and the grouting pipe 1 includes an inner pipe 2 and an outer pipe 3, and the upper part of the inner pipe 2 is fixedly provided with a fixed Disk 17, the two ends of the outer tube 3 are open structures, and the upper open end is provided with a fixing ring 18, and the fixing disk 17 is connected with the fixing ring 18 with a screw, so that the outer tube 3 is placed on the outer surface of the inner tube 2; The top of the inner pipe 2 is connected to the communication pipe 6, and the upper part of the side wall of the outer pipe 3 is connected to the circulation pipe 7, and the communication pipe 6 and the circulation pipe 7 are connected to the external grouting equipment, thereby forming a closed circulation loop;

[0043] The bottom surface of the inner tube 2 is evenly provided with a plurality of commun...

Embodiment approach 2

[0046] Such as Figure 4 with Figure 5 As shown, this embodiment discloses a double-layer self-circulating pressure-maintaining grouting pipe on the basis of Embodiment 1, including an inner pipe 2 and an outer pipe 3, the bottom of the outer pipe 3 is an open structure, and the outer The open end of the bottom of the pipe 3 is sealed by a flow diversion cover 13 connected by a screw thread. The outer edge of the flow diversion cover 13 is provided with an arc-shaped second flow guide surface 14. The center of the flow diversion cover 13 is provided with the right top and the inner pipe 2. The dividing column 15 abutting against the bottom surface is provided with an arc-shaped first guide surface 16 on the side of the divider column 15 , and the first guide surface 16 is smoothly connected with the second guide surface 14 .

[0047] When the present invention is used, the external grouting equipment pressurizes the prepared slurry from the connecting pipe into the inner pip...

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Abstract

The invention relates to a double-layer self-circulation pressure-maintaining grouting pipe. The double-layer self-circulation pressure-maintaining grouting pipe comprises a grouting pipe body, wherein the grouting pipe body comprises an inner pipe and an outer pipe which are arranged in a sleeving mode, the inner pipe and the outer pipe communicate with each other, and slurry outlet holes are formed in the outer pipe; meanwhile, the inner pipe and the outer pipe are connected with a grouting pump through a communicating pipe and a circulating pipe correspondingly; and meanwhile, expansion sleeves are further arranged on the outer pipe in a sleeving mode, and the expansion sleeves are connected with the communicating pipe through expansion pipes. When the double-layer self-circulation pressure-maintaining grouting pipe is used, slurry firstly enters the inner pipe, then enters the outer pipe from the inner pipe, and finally is grouted into a soil layer from the slurry outlet holes; the slurry is buffered through the design of the inner pipe and the outer pipe, so that the pressure change amplitude and the vibration amplitude of the slurry are reduced; meanwhile, the slurry is drained to the far end of the grouting pipe body through the adjustment of the hole diameter and the distribution density of the slurry outlet holes, so that the uniform distribution of the slurry is guaranteed; and the expansion sleeves at the two ends of the grouting pipe body fix the grouting pipe body into mounting holes after being expanded, so that the vibration of the grouting pipe body is further reduced, and the grouting quality is improved.

Description

technical field [0001] The invention relates to the technical field of rock and soil construction, in particular to a double-layer self-circulating pressure-maintaining grouting pipe. 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 gaps, 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 various civil engineering project...

Claims

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Application Information

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IPC IPC(8): E02D3/12
CPCE02D3/12
Inventor 蒋小锐刘建友刘方岳岭吕刚谭富圣马福东金张澜孟超邬泽黄杰陈丹李锴彭斌王杨郭磊陈慧李力张延张矿三王文谦徐品章
Owner CHINA RAILWAY ENG CONSULTING GRP CO LTD
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