CN110004914A - One kind can pressure control delamination pour slurry formula mini-valve tube and grouting method - Google Patents
One kind can pressure control delamination pour slurry formula mini-valve tube and grouting method Download PDFInfo
- Publication number
- CN110004914A CN110004914A CN201910371025.5A CN201910371025A CN110004914A CN 110004914 A CN110004914 A CN 110004914A CN 201910371025 A CN201910371025 A CN 201910371025A CN 110004914 A CN110004914 A CN 110004914A
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- tube
- inner tube
- outer tube
- slurry outlet
- slurry
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- 239000002002 slurry Substances 0.000 title claims abstract description 80
- 230000032798 delamination Effects 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000009530 blood pressure measurement Methods 0.000 claims abstract description 8
- 239000004744 fabric Substances 0.000 claims abstract description 4
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 3
- 238000007569 slipcasting Methods 0.000 claims description 29
- 238000005553 drilling Methods 0.000 claims description 12
- 239000011257 shell material Substances 0.000 claims description 9
- 239000011440 grout Substances 0.000 claims description 5
- 238000013461 design Methods 0.000 claims description 3
- 239000002689 soil Substances 0.000 claims description 3
- 238000003780 insertion Methods 0.000 abstract description 2
- 230000037431 insertion Effects 0.000 abstract description 2
- 238000010276 construction Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000010412 perfusion Effects 0.000 description 2
- 238000007596 consolidation process Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 238000009955 starching Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/12—Consolidating by placing solidifying or pore-filling substances in the soil
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Structural Engineering (AREA)
- Agronomy & Crop Science (AREA)
- Environmental & Geological Engineering (AREA)
- Soil Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
One kind can pressure control delamination pour slurry formula mini-valve tube and grouting method to realize pressure controllable and accurate delamination pour slurry effectively improve grouting quality.Including outer tube, inner tube, rotating handles and device for pressure measurement, the outer tube lower end closed, upper inside wall has internal thread segment, multilayer outer tube slurry outlet is arranged in longitudinal equidistant interval on the tube wall of lower part, every layer of outer tube slurry outlet is made of the slurry outlet of at least two circumferential even cloth, and setting covers the rubber check valve of each layer outer tube slurry outlet on outer tube outer wall.Inner tube lower end closed, multilayer inner tube injected hole is arranged in longitudinal equidistant interval on the tube wall of its underpart, the center of adjacent two layers inner tube injected hole away from the center of adjacent two layers outer tube slurry outlet away from equal, every layer of outer tube injected hole is made of quantity and position at least two injected holes corresponding with slurry outlet, upper end of inner tube is fixedly mounted with the longitudinally through rotation of inner tube in inner tube main body insertion outer tube, and the external thread section of upper part is threadedly coupled with the formation of outer tube internal thread segment.Device for pressure measurement includes the pressure sensor being fixedly mounted at injected hole on outer wall of inner tube.
Description
Technical field
The present invention relates to geotechnical engineering constructions, in particular to one kind can pressure control delamination pour slurry formula mini-valve tube and grouting method.
Background technique
Utilization is continually developed with the underground space, all kinds of underground engineerings are gradually risen, in work progress inevitably
It is worn under encountering, situations such as neighbour wears pile foundation.Such problem usually utilizes slip casting with strengthening stratum, reduces construction to stratum and week
It encloses the disturbance of building and then avoids that accident occurs.
Traditional grouting method includes rotary churning pile slip casting, sleeve valve barrel grouting etc., and wherein sleeve valve barrel grouting is by France
A kind of slip casting construction method that Soletanche foundation engineering company initiates in the last century 50's, also known as Soletanche3- method.
Sleeve valve barrel grouting technique due to can preferably control range of grouting and grouting pressure, can carry out repeat slip casting, and occur grout with
The features such as a possibility that grout leaking very little, is known as one of most reliable slip casting construction method both at home and abroad.
When carrying out the engineering similar to a shield crossing clump of piles, to maintain the steady of stratum and surrounding building and a clump of piles
It is fixed, need strict control construction method and grouting pressure.Traditional sleeve valve barrel grouting can not according to Different Strata property it is accurate
Grouting pressure is adjusted, may cause grouting pressure is excessive stratum unstability or grouting pressure deficiency is caused to lead to stratum consolidation
The inadequate situation of intensity.It is also difficult to carry out accurate delamination pour slurry simultaneously, it is undesirable to eventually lead to slip casting effect.
Summary of the invention
Technical problem to be solved by the invention is to provide one kind can pressure control delamination pour slurry formula mini-valve tube, to realize that pressure can
Control and accurate delamination pour slurry, effectively improve grouting quality.
It is as follows that the present invention solves technical solution used by above-mentioned technical problem:
One kind of the invention can pressure control delamination pour slurry formula mini-valve tube, it is characterized in that include outer tube, inner tube, rotating handles and pressure
Force measuring device, the outer tube lower end closed, upper inside wall have internal thread segment, and longitudinal equidistant interval setting is more on the tube wall of lower part
Layer outer tube slurry outlet, every layer of outer tube slurry outlet are made of the slurry outlet of at least two circumferential even cloth, and capping is arranged on outer tube outer wall
The rubber check valve of each layer outer tube slurry outlet；Said inner tube lower end closed, multilayer is arranged in longitudinal equidistant interval on the tube wall of its underpart
Inner tube injected hole, the center of adjacent two layers inner tube injected hole is away from away from equal, every layer outer with the center of adjacent two layers outer tube slurry outlet
Pipe injected hole is made of quantity and position at least two injected holes corresponding with slurry outlet, and upper end of inner tube is fixedly mounted and inner tube
Longitudinally through rotating handles；Said inner tube main body is inserted into outer tube, and the external thread section and outer tube internal thread segment of upper part are formed
It is threadedly coupled；The device for pressure measurement includes the pressure sensor being fixedly mounted at injected hole on outer wall of inner tube.
Another technical problem to be solved by this invention be to provide above-mentioned one kind can pressure control delamination pour slurry formula mini-valve tube note
Paste-making method, method includes the following steps:
1. carrying out mud off vertical drilling in soil body surface；
2. configured sleeve shell material is pumped to the bottom hole of the drilling rod by drilling rod, then from top to bottom to sleeve shell material into
Row perfusion；
3. after sleeve shell material is perfused, and can be located in pressure control delamination pour slurry formula mini-valve tube vertically be pressed into and drill
The center of drilling；
4. the position of stratum and expected grouting pressure reinforced as needed, according to inner tube angle line, inner tube graduation mark
With successive step injected hole at the beginning of outer tube angle line and slurry outlet height and registration；
5. being put into slip casting core pipe in inner tube carries out pre-pouring grout, injected hole is adjusted according to the measured value of pressure sensor and is gone out
The registration for starching hole, is adjusted to design value for grouting pressure；
6. carrying out formal slip casting；
7. adjust slip casting position after the stratum slip casting, repeat step 4. to step 6., until all stratum
Slip casting is completed.
The invention has the advantages that length and the circumferential direction relative position of being inserted into inner tube by changing outer tube, adjust slip casting
Hole 11 and 4 height of slurry outlet and registration, realize pressure controllable and accurate delamination pour slurry, to effectively improve grouting quality；
Structure is simple, easy to operate.
Detailed description of the invention
This specification includes following seven width attached drawing:
Fig. 1 be one kind of the present invention can pressure control delamination pour slurry formula mini-valve tube structural schematic diagram；
Fig. 2 be one kind of the present invention can pressure control delamination pour slurry formula mini-valve tube middle external tube structural schematic diagram；
Fig. 3 be one kind of the present invention can in pressure control delamination pour slurry formula mini-valve tube inner tube structural schematic diagram；
Fig. 4 is that one kind of the present invention can pressure control delamination pour slurry formula mini-valve tube middle external tube upper port top view；
Fig. 5 be one kind of the present invention can in pressure control delamination pour slurry formula mini-valve tube inner tube upper external thread section Local map；
Fig. 6 be one kind of the present invention can in pressure control delamination pour slurry formula mini-valve tube rotating handles main view；
Fig. 7 be one kind of the present invention can in pressure control delamination pour slurry formula mini-valve tube rotating handles rearview；
Component and corresponding label: outer tube 1, pressure display meter 2, holder 3, slurry outlet 4, rubber check valve are shown in figure
5, inner tube 6, inner tube angle line 7, external thread section 8, inner tube graduation mark 9, inner tube reference line 10, injected hole 11, pressure sensor 12,
Outer tube angle line 13, outer tube reference line 14, rotating handles 15, bolt 16, handle 17.
Specific embodiment
Present invention will be further explained below with reference to the attached drawings and examples.
Referring to Fig.1, one kind of the invention can pressure control delamination pour slurry formula mini-valve tube include outer tube 1, inner tube 6, rotating handles 15
And device for pressure measurement.Referring to Fig. 2,1 lower end closed of outer tube, upper inside wall has internal thread segment, longitudinal direction on the tube wall of lower part
Multilayer outer tube slurry outlet is arranged in equidistant interval, and every layer of outer tube slurry outlet is made of the slurry outlet 4 of at least two circumferential even cloth, outer tube
Setting covers the rubber check valve 5 of each layer outer tube slurry outlet on 1 outer wall.Referring to Fig. 3,6 lower end closed of said inner tube, its underpart pipe
Longitudinal equidistant interval is arranged multilayer inner tube injected hole on wall, and the center of adjacent two layers inner tube injected hole with adjacent two layers outer tube away from going out
The center in hole is starched away from equal, every layer of outer tube injected hole is by quantity and position at least two injected hole 11 corresponding with slurry outlet 4
Composition, 6 upper end of inner tube are fixedly mounted and the longitudinally through rotating handles 15 of inner tube 6.The device for pressure measurement includes fixed peace
Mounted in the pressure sensor 12 at injected hole 11 on 6 outer wall of inner tube.Referring to Fig.1, in 6 main body of said inner tube insertion outer tube 1, thereon
The external thread section 8 in portion is threadedly coupled with the formation of 1 internal thread segment of outer tube.Change inner tube 6 and 1 corresponding positions of outer tube by rotating handles 15
It sets, changes injected hole 11 and 4 height of slurry outlet and registration, to adjust slip casting position and grouting pressure.
Referring to Fig. 4, for convenience of adjusting, circumferential equidistant interval is carved with outer tube angle line 13 in the upper port of the outer tube 1,
Wherein quantity is that position overstriking corresponding with 4 center of slurry outlet scribes to form outer tube reference line 14.6 external wall of upper portion of said inner tube
On be carved with the vertically extending inner tube graduation mark 9 of inner tube angle line 7 and circumferential equidistant interval, wherein quantity is position and slip casting
Formed inner tube reference line 10 is scribed in the corresponding overstriking in 11 center of hole.
Referring to Fig.1, the device for pressure measurement further includes the pressure display meter 2 connecting with pressure sensor 12, in outer tube 1
Overhanging holder 3 is welded in outer wall upper end, and pressure display meter 2 is fixedly mounted on holder 3.It is suffered when outer tube is squeezed into reduce
Resistance, the tapered closing in lower end of the outer tube 1.
Referring to Fig. 6 master map 7, the handle 17 being laterally extended, rotating handles 15 are fixedly installed in the two sides of the rotating handles 15
It is formed a fixed connection by a pair of bolts 16 and 6 upper end of inner tube for being installed on the side wall of two sides.
As a kind of typical embodiment, referring to figs. 1 to Fig. 5, the slurry outlet 4,11 aperture of injected hole are equal.It is described
The quantity of outer tube slurry outlet is 5 layers, and every layer of outer tube slurry outlet is made of 4 slurry outlets 4 at circumferentially-spaced 90 degree of its center, described
The quantity of outer tube reference line 14 is 4, and circumferentially-spaced 90 degree are scribed.The quantity of said inner tube injected hole is 3 layers, every layer of inner tube note
4 injected holes 11 composition at circumferentially-spaced 90 degree of the center Kong Youqi is starched, the quantity of said inner tube reference line 10 is 4, between circumferential direction
It is scribed every 90 degree.
Inner tube 6 is inserted in outer tube 1, its coincidence length is adjusted and injected hole 11 is completely coincident with slurry outlet 4.Utilize rotation
Handle hand 15 twists inner tube 6, rotates inner tube 6 in outer tube 1 and rises or falls.When rotated, injected hole 11 and slurry outlet 4 exist
Offset will be generated on horizontal and vertical direction, to realize the purpose of adjustment grouting pressure.When injected hole 11 and slurry outlet 4 are complete
When full weight is closed, grouting pressure is minimum, and the smaller then grouting pressure of overlapping area is bigger.Since slurry outlet 4 is arranged symmetrically, may be implemented
Towards the isobaric uniform slip casting of four direction, according to inner tube angle line 7, inner tube graduation mark 9 and the judgement note of outer tube angle line 13 when slip casting
The degree that is overlapped in hole 11 and slurry outlet 4 is starched, foundation is arranged in the pressure sensor 12 of inner tube injected hole 11 and is arranged in outer tube 1
On pressure display meter 2, to grouting pressure carry out refinement adjustment to reach expected grouting pressure., it is set on 1 outer wall of outer tube
Rubber check valve 5 can effectively prevent slurry reflux, improve grouting quality.Slip casting depth can be judged according to inner tube graduation mark 9, from
And realize the slip casting to specific position stratum.
Referring to Fig.1, one kind of the present invention can pressure control delamination pour slurry formula mini-valve tube grouting method, comprising the following steps:
1. carrying out mud off vertical drilling in soil body surface；
2. configured sleeve shell material is pumped to the bottom hole of the drilling rod by drilling rod, then from top to bottom to sleeve shell material into
Row perfusion；
3. after sleeve shell material is perfused, and can be located in pressure control delamination pour slurry formula mini-valve tube vertically be pressed into and drill
The center of drilling；
4. the position of stratum and expected grouting pressure reinforced as needed, according to inner tube angle line 7, inner tube graduation mark
9 and outer tube angle line 13 just successive step injected hole 11 and 4 height of slurry outlet and registration；
5. being put into slip casting core pipe in inner tube 6 carries out pre-pouring grout, injected hole is adjusted according to the measured value of pressure sensor 12
11 and slurry outlet 4 registration, grouting pressure is adjusted to design value；
6. carrying out formal slip casting；
7. adjust slip casting position after the stratum slip casting, repeat step 4. to step 6., until all stratum
Slip casting is completed.
The above only explain through diagrams one kind of the present invention can pressure control delamination pour slurry formula mini-valve tube and grouting method one
A little principles are not intended to for the present invention being confined in shown and described specific structure and the scope of application, therefore all possibility
The corresponding modification being utilized and equivalent belong to the applied the scope of the patents of the present invention.
Claims (9)
1. one kind can pressure control delamination pour slurry formula mini-valve tube, it is characterized in that include outer tube (1), inner tube (6), rotating handles (15) and pressure
Force measuring device, outer tube (1) lower end closed, upper inside wall have internal thread segment, and longitudinal equidistant interval is set on the tube wall of lower part
Multilayer outer tube slurry outlet is set, every layer of outer tube slurry outlet is made of the slurry outlet (4) of at least two circumferential even cloth, outer tube (1) outer wall
Upper setting covers the rubber check valve (5) of each layer outer tube slurry outlet；Said inner tube (6) lower end closed, it is longitudinal on the tube wall of its underpart
Equidistant interval is arranged multilayer inner tube injected hole, the center of adjacent two layers inner tube injected hole away from in adjacent two layers outer tube slurry outlet
Away from equal, every layer of outer tube injected hole is made of the heart quantity and position at least two injected holes (11) corresponding with slurry outlet (4),
Inner tube (6) upper end is fixedly mounted and inner tube (6) longitudinally through rotating handles (15)；Said inner tube (6) main body is inserted into outer tube (1)
Interior, the external thread section (8) of upper part is threadedly coupled with the formation of outer tube (1) internal thread segment；The device for pressure measurement includes fixing
It is mounted on the pressure sensor (12) at injected hole (11) on inner tube (6) outer wall.
2. one kind as described in claim 1 can pressure control delamination pour slurry formula mini-valve tube, it is characterized in that: the slurry outlet (4), slip casting
Hole (11) aperture is equal.
3. one kind as claimed in claim 2 can pressure control delamination pour slurry formula mini-valve tube, it is characterized in that: the upper end of the outer tube (1)
Circumferential equidistant interval is carved with outer tube angle line (13) on mouth, and wherein quantity adds for position is corresponding with slurry outlet (4) center
The system of broaching forms outer tube reference line (14)；Between being carved with inner tube angle line (7) and circumferential direction in said inner tube (6) external wall of upper portion equidistantly
Every vertically extending inner tube graduation mark (9), wherein quantity be position overstriking corresponding with injected hole (11) center scribe shape
At inner tube reference line (10).
4. one kind as claimed in claim 3 can pressure control delamination pour slurry formula mini-valve tube, it is characterized in that: the number of the outer tube slurry outlet
Amount is 5 layers, and every layer of outer tube slurry outlet is made of 4 slurry outlets (4) at circumferentially-spaced 90 degree of its center, the outer tube reference line
(14) quantity is 4, and circumferentially-spaced 90 degree are scribed.
5. one kind as claimed in claim 4 can pressure control delamination pour slurry formula mini-valve tube, it is characterized in that: the number of said inner tube injected hole
Amount is 3 layers, and every layer of inner tube injected hole is made of 4 injected holes (11) at circumferentially-spaced 90 degree of its center, said inner tube reference line
(10) quantity is 4, and circumferentially-spaced 90 degree are scribed.
6. one kind as described in claim 1 can pressure control delamination pour slurry formula mini-valve tube, it is characterized in that: the device for pressure measurement is also
Including the pressure display meter (2) connecting with pressure sensor (12), overhanging holder (3) are welded in outer tube (1) outer wall upper end,
Pressure display meter (2) is fixedly mounted on holder (3).
7. one kind as described in claim 1 can pressure control delamination pour slurry formula mini-valve tube, it is characterized in that: the lower end of the outer tube (1)
Tapered closing.
8. one kind as described in claim 1 can pressure control delamination pour slurry formula mini-valve tube, it is characterized in that: the rotating handles (15)
Two sides are fixedly installed the handle (17) that is laterally extended, and rotating handles (15) pass through a pair of bolts (16) for being installed on the side wall of two sides
It forms a fixed connection with inner tube (6) upper end.
9. using one kind as claimed in any one of claims 1 to 7 can pressure control delamination pour slurry formula mini-valve tube grouting method, packet
Include following steps:
1. carrying out mud off vertical drilling in soil body surface；
2. configured sleeve shell material to be pumped to the bottom hole of the drilling rod by drilling rod, then sleeve shell material is filled from top to bottom
Note；
3. after sleeve shell material is perfused, and drilling can be located in pressure control delamination pour slurry formula mini-valve tube vertically be pressed into and drill
Center；
4. the position of stratum and expected grouting pressure reinforced as needed, according to inner tube angle line (7), inner tube graduation mark
(9) and outer tube angle line (13) just successive step injected hole (11) and slurry outlet (4) height and registration；
5. being put into slip casting core pipe in inner tube (6) carries out pre-pouring grout, injected hole is adjusted according to the measured value of pressure sensor (12)
(11) and the registration of slurry outlet (4) grouting pressure, is adjusted to design value；
6. carrying out formal slip casting；
7. adjust slip casting position after the stratum slip casting, repeat step 4. to step 6., until all stratum slip castings
It completes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910371025.5A CN110004914A (en) | 2019-05-06 | 2019-05-06 | One kind can pressure control delamination pour slurry formula mini-valve tube and grouting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910371025.5A CN110004914A (en) | 2019-05-06 | 2019-05-06 | One kind can pressure control delamination pour slurry formula mini-valve tube and grouting method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110004914A true CN110004914A (en) | 2019-07-12 |
Family
ID=67175821
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910371025.5A Pending CN110004914A (en) | 2019-05-06 | 2019-05-06 | One kind can pressure control delamination pour slurry formula mini-valve tube and grouting method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110004914A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110017152A (en) * | 2019-03-23 | 2019-07-16 | 新汶矿业集团有限责任公司孙村煤矿 | A kind of underground engineering country rock substep grouting strengthening method smashed to pieces |
| CN110629622A (en) * | 2019-10-08 | 2019-12-31 | 林建国 | Grouting reinforcement device for roadbed construction and use method thereof |
| CN110965545A (en) * | 2019-11-15 | 2020-04-07 | 安徽中固建设有限公司 | Construction settlement control building foundation grouting pre-reinforcement method |
| CN113107531A (en) * | 2021-05-20 | 2021-07-13 | 中铁四局集团第四工程有限公司 | Tunnel segment wall post-grouting method |
| CN113846656A (en) * | 2021-09-16 | 2021-12-28 | 沈阳建筑大学 | Device for reinforcing multi-layer soft rock slope of strip mine |
| CN114892487A (en) * | 2022-04-15 | 2022-08-12 | 安徽优特公路养护科技有限公司 | Multistage slip casting formula slip casting pipe |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2357720A1 (en) * | 1976-03-19 | 1978-02-03 | Toa Grout Kogyo Co | Borehole seal and injector for high pressure grouting - is switched from boring to injecting with changed internal alignment |
| KR101754206B1 (en) * | 2017-02-01 | 2017-07-06 | (주)태화개발 | Grouting apparatus with improved injection performance and grouting method using the same |
| CN108193693A (en) * | 2018-03-16 | 2018-06-22 | 沈阳建筑大学 | A kind of orientation given layer grouting sleeve valve pipe and grouting method |
| CN108221952A (en) * | 2018-03-16 | 2018-06-29 | 沈阳建筑大学 | A kind of pressure-adjustable orientation grouting sleeve valve pipe and grouting method |
| CN210341885U (en) * | 2019-05-06 | 2020-04-17 | 中国电建集团铁路建设有限公司 | Pressure-controllable layered grouting type sleeve valve pipe |
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2019
- 2019-05-06 CN CN201910371025.5A patent/CN110004914A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2357720A1 (en) * | 1976-03-19 | 1978-02-03 | Toa Grout Kogyo Co | Borehole seal and injector for high pressure grouting - is switched from boring to injecting with changed internal alignment |
| KR101754206B1 (en) * | 2017-02-01 | 2017-07-06 | (주)태화개발 | Grouting apparatus with improved injection performance and grouting method using the same |
| CN108193693A (en) * | 2018-03-16 | 2018-06-22 | 沈阳建筑大学 | A kind of orientation given layer grouting sleeve valve pipe and grouting method |
| CN108221952A (en) * | 2018-03-16 | 2018-06-29 | 沈阳建筑大学 | A kind of pressure-adjustable orientation grouting sleeve valve pipe and grouting method |
| CN210341885U (en) * | 2019-05-06 | 2020-04-17 | 中国电建集团铁路建设有限公司 | Pressure-controllable layered grouting type sleeve valve pipe |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110017152A (en) * | 2019-03-23 | 2019-07-16 | 新汶矿业集团有限责任公司孙村煤矿 | A kind of underground engineering country rock substep grouting strengthening method smashed to pieces |
| CN110629622A (en) * | 2019-10-08 | 2019-12-31 | 林建国 | Grouting reinforcement device for roadbed construction and use method thereof |
| CN110965545A (en) * | 2019-11-15 | 2020-04-07 | 安徽中固建设有限公司 | Construction settlement control building foundation grouting pre-reinforcement method |
| CN113107531A (en) * | 2021-05-20 | 2021-07-13 | 中铁四局集团第四工程有限公司 | Tunnel segment wall post-grouting method |
| CN113107531B (en) * | 2021-05-20 | 2022-09-27 | 中铁四局集团第四工程有限公司 | Tunnel segment wall post-grouting method |
| CN113846656A (en) * | 2021-09-16 | 2021-12-28 | 沈阳建筑大学 | Device for reinforcing multi-layer soft rock slope of strip mine |
| CN113846656B (en) * | 2021-09-16 | 2022-12-13 | 沈阳建筑大学 | Device for reinforcing multi-layer soft rock slope of strip mine |
| CN114892487A (en) * | 2022-04-15 | 2022-08-12 | 安徽优特公路养护科技有限公司 | Multistage slip casting formula slip casting pipe |
| CN114892487B (en) * | 2022-04-15 | 2024-05-28 | 安徽优特公路养护科技有限公司 | Multistage slip casting formula slip casting pipe |
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