CN103184737A - Grouting machine for post grouting under embedded rock geological condition - Google Patents

Grouting machine for post grouting under embedded rock geological condition Download PDF

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Publication number
CN103184737A
CN103184737A CN2011104456414A CN201110445641A CN103184737A CN 103184737 A CN103184737 A CN 103184737A CN 2011104456414 A CN2011104456414 A CN 2011104456414A CN 201110445641 A CN201110445641 A CN 201110445641A CN 103184737 A CN103184737 A CN 103184737A
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CN
China
Prior art keywords
grouting
pipe
casting machine
slurry casting
black iron
Prior art date
Application number
CN2011104456414A
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Chinese (zh)
Inventor
张哲彬
赵伟成
李耀良
袁芬
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上海市基础工程有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 上海市基础工程有限公司 filed Critical 上海市基础工程有限公司
Priority to CN2011104456414A priority Critical patent/CN103184737A/en
Publication of CN103184737A publication Critical patent/CN103184737A/en

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Abstract

The invention relates to a grouting machine for post grouting under an embedded rock geological condition. The grouting machine is inverted T-shaped. A grouting pipe on the upper part of the grouting machine is connected with black iron pipes through a T-junction, wherein the black iron pipes horizontally extend towards two ends on the lower part of the grouting machine. Grouting holes are formed in the black iron pipes. Each black iron pipe is wrapped by a rubber tire. The black iron pipes are connected through an internal thread joint, and the two ends of the black iron pipes are sealed by cast iron choke plugs. The grouting holes are distributed uniformly or quincuncially in the black iron pipes which extend towards the two ends, and have diameters Phi of less than or equal to 8mm. The total area of the grouting holes is more than or equal to the sectional area of an inner hole of the grouting pipe. The construction efficiency of the post grouting under the embedded rock geological condition can be improved, the post grouting quality and the post grouting success rate can be ensured, and the phenomenon of softening of an underground rock stratum encountering water can be prevented. The grouting machine for the post grouting under the embedded rock geological condition can be better adapted to a rock stratum condition, and is simple in structure and convenient to construct.

Description

Grouting behind shaft or drift lining slurry casting machine under the embedding rock geological conditions
Technical field
The present invention relates to the slurry casting machine that a kind of building operations is used, especially a kind of for grouting behind shaft or drift lining slurry casting machine under the embedding rock geological conditions.
Background technology
External pile foundation grouting behind shaft or drift lining method starts from the sixties in 20th century, with grouting behind shaft or drift lining the castinplace pile surrounding soil is reinforced in early days, as a kind of remedial measure to the defective stake, directly adopted grouting behind shaft or drift lining to improve the bearing capacity of castinplace pile afterwards, can reduce pile foundation settlement effectively, reduce the pile foundation engineering cost.When the reinforcement mechanism of grouting behind shaft or drift lining constantly deeply was familiar with, effect also progressively obtained the approval of engineering circle, and expanded from bridge engineering to municipal administration with industry, civilian construction field, found broad application.
In China, the work of grouting behind shaft or drift lining Study on Technology starts to walk than later, and the construction pilot of pile-end post-grouting has been arranged the beginning of the eighties.Follow-up, carry out a series of pilot study work through a plurality of universities and colleges and R﹠D institution, and obtained certain achievement.The nineties in 20th century, post grouting process began large-scale promotion application at home, and castinplace pile grouting behind shaft or drift lining technology has been applied to produce huge economic benefits and social benefit in more than 20 the thousands of pile foundation engineerings of saving trouble in the whole nation at present.
Along with the Chinese society expanding economy, the development of buildings such as super highrise building and Longspan Bridge, traffic, municipal engineering makes that the substrate load of building is increasing, and bearing capacity of foundation soil and distortion are had higher requirement.The pile foundation degree of depth is more and more darker, and the geological conditions of facing is also got over complicated.
Conventional is that stake (wall) end sediment and stake (wall) side mud skin are eliminated in the effect of soft clay area grouting behind shaft or drift lining, and grouting behind shaft or drift lining mainly is to play to prevent that subterranean strata from meeting the effect of water softening under the embedding rock geological conditions, makes the intensity of stake (wall) end, stake (wall) the side soil body can obtain to a certain degree raising.Thereby improve adhesion stress of stake (wall) week soil, make stake (body) body intensity obtain reinforcement, finally improved the bearing capacity of stake (wall) to a certain extent and reduced the settling amount of pile body (body of wall).
This patent relies on the object of construction production in area, domestic a plurality of rock stratum, and the construction experience of grouting behind shaft or drift lining according to the practice of construction effect, is improved conventional slurry casting machine under the accumulation embedding rock geological conditions, has formed this patent invention.
Summary of the invention
The present invention will provide grouting behind shaft or drift lining slurry casting machine under a kind of embedding rock geological conditions, is used for improving the grouting behind shaft or drift lining efficiency of construction under embedding rock geological conditions, guarantees the quality success rate of grouting behind shaft or drift lining, prevents the phenomenon of subterranean strata chance water softening.The invention provides grouting behind shaft or drift lining slurry casting machine under a kind of embedding rock geological conditions, can adapt to the rock stratum condition better, simple structure, easy construction.
For achieving the above object, the technical solution used in the present invention is as follows:
Grouting behind shaft or drift lining slurry casting machine under a kind of embedding rock geological conditions comprises Grouting Pipe, tee junction, and rubber tyre, black pipe, female adapter, cast iron silently is characterized in:
Slurry casting machine becomes " T " word shape, and the Grouting Pipe on top is positioned at the black pipe that the bottom both ends horizontal is stretched out by the tee junction connection, has injected hole on the black pipe, black pipe outer wrap rubber tyre; Connect with female adapter between the black pipe, the two ends place is silently sealing cylinder iron.
Injected hole evenly arrange or quincuncial arrangement on the overhanging black pipe in two ends, injected hole diameter≤φ 8mm, and the sectional area of the injected hole gross area 〉=Grouting Pipe endoporus.
Grouting Pipe is installed on the reinforcing cage, and fixes with reinforcing cage master muscle.Slurry casting machine is installed in a bottom joint Grouting Pipe place, and is placed on a bed rock layer and the plain concrete intersection of pile body.
The invention has the beneficial effects as follows:
The present invention can improve the grouting behind shaft or drift lining efficiency of construction under embedding rock geological conditions, guarantees the quality success rate of grouting behind shaft or drift lining, prevents the phenomenon of subterranean strata chance water softening.The invention provides grouting behind shaft or drift lining slurry casting machine under a kind of embedding rock geological conditions, can adapt to the rock stratum condition better, simple structure, easy construction.
Description of drawings
Fig. 1 is the slurry casting machine scheme of installation;
Fig. 2 is the slurry casting machine structural representation.
The specific embodiment
Below in conjunction with specific embodiment, further set forth the present invention.Should be understood that these embodiments only to be used for explanation the present invention and be not used in and limit the scope of the invention.Should be understood that in addition those skilled in the art can make various changes or modifications the present invention after the content of having read the present invention's instruction, these equivalent form of values fall within the application's appended claims institute restricted portion equally.
As shown in Figure 1, the slurry casting machine mounting method is as follows: elongated installation Grouting Pipe on reinforcing cage, and Grouting Pipe and reinforcing cage lead to main muscle firm fixation, transfer with reinforcing cage integral body, slurry casting machine is installed in a bottom joint Grouting Pipe place, and slurry casting machine is placed on a bed rock layer and the plain concrete intersection of pile body.
As shown in Figure 2, grouting behind shaft or drift lining slurry casting machine under a kind of embedding rock geological conditions comprises Grouting Pipe 1, tee junction 2, injected hole 3, rubber tyre 4, black pipe 5, internal thread nipple 6, cast iron silently 7.
Slurry casting machine become to fall " T " font shape, and top connects transfers Grouting Pipe 1, by tee junction 2, the bottom to two ends each level stretch out joint black pipe 5, go up evenly or quincuncial arrangement injected hole 3 rubber tyre 4 on black pipe 5 outer wrap; Black pipe 5 usefulness internal thread nipples 6 connect, and cylinder iron silently 7 envelopes are tight in the end.
Evenly (or quincunx) arranges injected hole 3 on the overhanging black pipe 5 in two ends, slurry casting machine bottom, and injected hole 3 should be controlled below φ 8mm, and requires total injected hole 3 gross areas to be not less than the sectional area of Grouting Pipe 1 endoporus.
Rubber tyre 4 tightly is wrapped in injected hole 3 outsides, keeps the sealing of injected hole 3, mud and slip casting rear slurry are not passed back in the pipe, form one-way cock.
Embodiment:
Jinan engineering diaphragm wall, wall thickness 800mm, ground wall design strength grade C30, impervious S8, underwater concrete are pressed the C35 preparation, become groove depth 26.8m~36.1m, totally 68 width of cloth.Diaphragm wall passes through completely decomposed, severely-weathered rock stratum, and the bottom land absolute altitude is arranged in the weathered rock formation.
Two madjack pipes of elongated installation on every width of cloth ground joist cage, the bottom connects slurry casting machine of the present invention.This engineering Grouting Pipe adopts 1 cun black pipe, and the slurry outlet aperture is more than or equal to 7mm, and requires total slurry outlet gross area to be not less than the sectional area of madjack pipe endoporus.
This engineering Grouting Pipe adopts 1 cun black pipe, and the slurry outlet aperture is more than or equal to 7mm, and requires total slurry outlet gross area to be not less than the sectional area of madjack pipe endoporus.Injected hole outer wrap rubber tyre, the sealing of maintenance injected hole forms one-way cock.
Slip casting success rate 100% in the whole construction course, every width of cloth ground wall chase rising pouring slurry quality all reaches designing requirement, has improved efficiency of construction greatly, has guaranteed to go along with sb. to guard him engineering and has fulfiled ahead of schedule on schedule.

Claims (4)

1. grouting behind shaft or drift lining slurry casting machine under the embedding rock geological conditions, comprise Grouting Pipe (1), tee junction (2), rubber tyre (4), black pipe (5), female adapter (6), cast iron is (7) silently, it is characterized in that: described slurry casting machine becomes " T " word shape, and the Grouting Pipe on top (1) connects the connection of (2) head by three and is positioned at the black pipe (5) that the bottom both ends horizontal is stretched out, have injected hole (3) on the black pipe (5), black pipe (5) outer wrap rubber tyre (4); Connect with female adapter (6) between the black pipe (4), the two ends place is (7) sealing cylinder iron silently.
2. grouting behind shaft or drift lining slurry casting machine under the embedding rock geological conditions according to claim 1, it is characterized in that: described injected hole (3) evenly arrange or quincuncial arrangement on the overhanging black pipes in two ends (5), injected hole (3) diameter≤φ 8mm, and the sectional area of injected hole (3) gross area 〉=Grouting Pipe (1) endoporus.
3. grouting behind shaft or drift lining slurry casting machine under the embedding rock geological conditions according to claim 1, it is characterized in that: described Grouting Pipe (1) is installed on the reinforcing cage, and fixes with reinforcing cage master muscle.
4. grouting behind shaft or drift lining slurry casting machine under the embedding rock geological conditions according to claim 1 is characterized in that: described slurry casting machine is installed in a bottom joint Grouting Pipe (1) and locates, and is placed on a bed rock layer and pile body element concrete intersection.
CN2011104456414A 2011-12-28 2011-12-28 Grouting machine for post grouting under embedded rock geological condition CN103184737A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011104456414A CN103184737A (en) 2011-12-28 2011-12-28 Grouting machine for post grouting under embedded rock geological condition

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Application Number Priority Date Filing Date Title
CN2011104456414A CN103184737A (en) 2011-12-28 2011-12-28 Grouting machine for post grouting under embedded rock geological condition

Publications (1)

Publication Number Publication Date
CN103184737A true CN103184737A (en) 2013-07-03

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103603356A (en) * 2013-11-20 2014-02-26 上海市基础工程集团有限公司 Annular post-grouting device for lower pile tips under sandstone geological conditions
CN107687171A (en) * 2017-09-15 2018-02-13 中建三局第建设工程有限责任公司 Diaphram wall double pump post-grouting device and construction method

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103603356A (en) * 2013-11-20 2014-02-26 上海市基础工程集团有限公司 Annular post-grouting device for lower pile tips under sandstone geological conditions
CN107687171A (en) * 2017-09-15 2018-02-13 中建三局第建设工程有限责任公司 Diaphram wall double pump post-grouting device and construction method

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Application publication date: 20130703

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