Unlock instant, AI-driven research and patent intelligence for your innovation.

Synchronous grouting slurry for shield driving construction of water-enriched sandy gravel stratum

A technology of simultaneous grouting and sand and pebbles, applied in sustainable waste treatment, solid waste management, climate sustainability, etc., can solve the problems of synchronous grouting slurry segregation, etc., to speed up the initial setting time, reduce the difficulty of implementation, and solve The effect of segregation

Inactive Publication Date: 2014-11-19
SOUTHWEST JIAOTONG UNIV +1
View PDF0 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] (3) Solve the problem of segregation of synchronous grouting slurry in a short time, facilitate transportation, and ensure that the grouting pipeline is not blocked

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Weigh each component according to the following weight percentage: 8% cement, 42% river sand, 0.1% polycarboxylate superplasticizer (model FT-D3), 4.5% bentonite, 1.6% yellow clay powder, 24% fly ash %, water 19.8%.

Embodiment 2

[0025] Weigh each component according to the following weight percentage: 8.4% cement, 42.5% river sand, 0.15% polycarboxylate superplasticizer (model FT-D3), 4.6% bentonite, 1.5% yellow clay powder, 23.5% fly ash %, water 19.35%.

Embodiment 3

[0027] Weigh each component according to the following weight percentages: 8.8% cement, 42.9% river sand, 0.2% polycarboxylate superplasticizer (model FT-D3), 4.7% bentonite, 1.4% yellow clay powder, 23% fly ash %, water 19%.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to synchronous grouting slurry for shield driving construction of a water-enriched sandy gravel stratum, which is used for synchronously grouting the stratum by using an earth pressure balance shield for the water-enriched sandy gravel stratum. The grouting slurry is prepared from the following components in percentage by weight: 8-8.8% of cement, 42-43% of river sands, 0.1-0.2% of polycarboxylate high performance water reducer, 4.5-4.7% of bentonite, 1.4-1.6% of yellow clay powder, 23-24% of coal ash and 19-20% of water. According to the slurry provided by the invention, by adding the polycarboxylate high performance water reducer, the use level of water in the equal flow condition is reduced, the use level of cement can be reduced under same strength by virtue of double effects of hydrophilicity and hydrophobicity of the polycarboxylate high performance water reducer, so that the initial setting time of the slurry is accelerated and the problem that the synchronous grouting slurry is separated within a short time is solved. The peaceability, the mobility and the set strength of the synchronous grouting slurry can be improved.

Description

technical field [0001] The invention relates to a synchronous grouting slurry for construction tunnel engineering, in particular to a synchronous grouting slurry for shield tunneling construction in water-rich sand and pebble strata. Background technique [0002] The earth pressure balance shield (EPB) utilizes the full-section cutting cutter head installed at the front of the shield to cut the front soil into the storage sealed chamber behind the cutter head, and make the chamber have proper pressure and excavation Surface water and soil pressure is balanced to reduce the disturbance of the ground soil caused by shield tunneling, thereby controlling surface settlement. When unearthed, the soil residue is continuously discharged to the soil discharge port by the screw conveyor installed at the lower part of the sealed chamber. [0003] During the excavation construction process of the earth pressure balance shield machine, the building gap between the main shield machine and...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00C04B14/06C04B14/10C04B18/08
CPCY02W30/91
Inventor 王国义张君李人宪徐润泽杜飞龙连逢逾赵林邓勇王昭张卢学杨亮亮李小波
Owner SOUTHWEST JIAOTONG UNIV