CN110454200A - A kind of double-walled grouting with small pipe device and its construction method - Google Patents
A kind of double-walled grouting with small pipe device and its construction method Download PDFInfo
- Publication number
- CN110454200A CN110454200A CN201910844642.2A CN201910844642A CN110454200A CN 110454200 A CN110454200 A CN 110454200A CN 201910844642 A CN201910844642 A CN 201910844642A CN 110454200 A CN110454200 A CN 110454200A
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- slip casting
- grouting
- walled
- double
- gate valve
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- 238000010276 construction Methods 0.000 title claims abstract description 30
- 238000007569 slipcasting Methods 0.000 claims abstract description 134
- 238000000034 method Methods 0.000 claims description 15
- 239000004568 cement Substances 0.000 claims description 12
- 230000010339 dilation Effects 0.000 claims description 9
- 238000005553 drilling Methods 0.000 claims description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 5
- 229920002472 Starch Polymers 0.000 claims description 4
- 235000019698 starch Nutrition 0.000 claims description 4
- 239000012535 impurity Substances 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 238000010926 purge Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 17
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000002002 slurry Substances 0.000 description 16
- 239000011435 rock Substances 0.000 description 13
- 230000015572 biosynthetic process Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 235000019738 Limestone Nutrition 0.000 description 2
- 239000003673 groundwater Substances 0.000 description 2
- 239000006028 limestone Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 238000009933 burial Methods 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
- E21D11/105—Transport or application of concrete specially adapted for the lining of tunnels or galleries ; Backfilling the space between main building element and the surrounding rock, e.g. with concrete
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention discloses a kind of double-walled grouting with small pipe device and its construction methods.It include the first Grouting Pipe, first Grouting Pipe upper end is cased with the second slip casting casing, the first Grouting Pipe is equipped with the first gate valve above second slip casting casing, is equipped with the second gate valve close to the second slip casting casing of the first gate valve, is evenly distributed with the first injected hole in the first Grouting Pipe below the second slip casting casing；The second injected hole is evenly distributed on the second slip casting casing below second gate valve.The present invention has speed of application fast, and slip casting effect is good, and structure is simple, easy to use, slip casting effect sorrow, beneficial effect at low cost.
Description
Technical field
The present invention relates to a kind of grouting device and method, especially a kind of double-walled grouting with small pipe device and its construction party
Method.
Background technique
In China, region area is big, and geological hydrology complicated condition is changeable, and transportation industry is increasingly mature, and institute's built tunnel is already not
It is disconnected to increase, method for tunnel construction from traditional Mining Method, rock tunnel(ling) machine method by the constantly bringing forth new ideas of people, develop；Base area
The variation of layer situation, has gradually derived many novel construction methods, new process, and the current country continues to use most methods are as follows: New Austrian Tunneling Method and
Shallow burial hidden digging, with the diversification of tunnel excavation, unpredictalbe geological conditions is more and more, especially domestic in Yunnan-Guizhou river,
There is the rock of the joint fissures agensis such as mud stone, siltstone more in formation lithology, tunnel pays how (pre-grouting) reaches in advance
Design requirement just becomes the project that we need to study.
At present about tunnel in the rock stratum of joint fissure agensis, it is existing be by the way of Grouting Pipe (13) slip casting,
As shown in figure 4, one end is equipped with gate valve (12) in Grouting Pipe (13), note is evenly distributed in gate valve (12) hole side Grouting Pipe (13)
Starch hole (14), Grouting Pipe (13) other end be pyramidal structure (11), first slip casting region carry out successively carry out turn hole, borehole cleaning, insert
Enter Grouting Pipe, slip casting, sealing of hole, but in the prior art slip casting when, when grouting pressure is excessive, slurries be easy through Grouting Pipe and hole it
Between flow backwards, so the grouting pressure of the prior art is caused to be 0.5-1Mpa, the dilation angle of slip casting is 0.3-0.5m, is existed
Slip casting low efficiency, speed of application is slow, and slip casting effect is poor, the high disadvantage of grouting cost.
Summary of the invention
The object of the present invention is to provide a kind of double-walled grouting with small pipe device and its construction methods.The present invention, which has, to be applied
Work speed is fast, and slip casting effect is good, and structure is simple, easy to use, slip casting effect sorrow, feature at low cost.
Technical solution of the present invention: a kind of double-walled grouting with small pipe device and its construction method, include the first Grouting Pipe,
First Grouting Pipe upper end is cased with the second slip casting casing, and the first Grouting Pipe is equipped with the first gate valve above the second slip casting casing, close
Second slip casting casing of the first gate valve is equipped with the second gate valve, is evenly distributed with the below the second slip casting casing in the first Grouting Pipe
One injected hole；The second injected hole is evenly distributed on the second slip casting casing below second gate valve.
In double-walled grouting with small pipe device above-mentioned, the lower end of first Grouting Pipe is pyramidal structure.
In double-walled grouting with small pipe device above-mentioned, the first Grouting Pipe of the second slip casting lower end is free end,
The slip casting region of first injected hole is the first slip casting region；Second slip casting casing of second gate valve lower end is fixing end, the
The slip casting region of two injected holes is the second slip casting region.
The construction method of the double-walled grouting with small pipe device, includes following steps:
A, it drills, angle is 10-15 °, and drillable length is the length of double-walled ductule, borehole cleaning after drilling；
B, after being inserted into double-walled grouting with small pipe device in molded hole, the double-walled grouting with small pipe outside hole is filled
Set fixation；
C, fixing end slip casting: slip casting machine is connect with the second gate valve, and the second gate valve is opened, and slip casting machine is by accelerated cement through second
Gate valve enters in the second slip casting casing, and the accelerated cement in the second slip casting casing injects the second slip casting region through the second injected hole
Interior, slip casting finishes, and after reaching the presetting period；
D, free end slip casting: slip casting machine is connect with the first gate valve, and the first gate valve is opened, and slip casting machine is by cement through the first gate valve
Into in the first Grouting Pipe, the cement in the first Grouting Pipe injects in the first slip casting region through the first injected hole, after slip casting；
E, the double-walled grouting with small pipe device cancelled outside to hole is fixed, and double-walled grouting with small pipe device is taken out of hole
After out, sealing of hole completes slip casting.
In the construction method of double-walled grouting with small pipe device above-mentioned, in the step, drilling uses YT-28 air drill, hole
Spacing between hole is 5-6m；Borehole cleaning is specifically to be purged using high-pressure blast to duct after drilling after drilling, by hole
Outside endoparticle, impurity blowout hole.
In the construction method of double-walled grouting with small pipe device above-mentioned, in the step, by the double-walled ductule outside hole
Grouting device is fixed on the fashioned iron stood, is fixed using welding procedure.
In the construction method of double-walled grouting with small pipe device above-mentioned, in the step, the grouting pressure of slip casting machine is
0.5-1Mpa, the dilation angle in the second slip casting region are 0.3-0.5m；Presetting period is 8-13min.
In the construction method of double-walled grouting with small pipe device above-mentioned, in the step, the grouting pressure of slip casting machine is 5-
10Mpa, the dilation angle in the first slip casting region are 2.5-3m.
Compared with prior art, the invention has the following advantages:
1, the present invention is by first to fixing end slip casting, allowing in country rock 0.3-0.5m full of the second slip casting area of slurries formation
Domain carries out free end slip casting after the slurries in the second slip casting region reach presetting period 8-13min, and slurries are flowed from free end
Out, rock mass is filled, because the rock stratum close to the second slip casting region is hardened by slip casting, the slurries of free end can be effective
It in filling to rock stratum, will not flow backwards, form effective first slip casting region, and formd envelope in the second slip casting region
The consolidation area closed, so the slurries in the first slip casting region can not countercurrently go out, to force the slurry in the first slip casting region
Liquid can only be diffused around the second slip casting region, and slip casting effect is good；So free end grouting pressure is also improved to 5-10Mpa,
The dilation angle in the first slip casting region is 2.5-3m, increases the dilation angle of slip casting.
2, the present invention uses the progress slip casting of double-walled grouting with small pipe device, takes " double slip casting of high pressure, double closure, increasing
The regulation principle of big diffusing capacity, reduction design steel pipe ", slurries are really injected into tunnel surrounding, reaches and changes rock stratum property
Matter reinforces advance support, economical rationality and safe firm purpose.Using the double-deck gate valve, respectively to the second slip casting casing and
One Grouting Pipe distinguish slip casting, achieve the purpose that effective slip casting, slurry seal, have speed of application it is fast, slurry seal effect is good, construction machines and
The advantages such as material is simple, slip casting effect sorrow, and construction cost is low.
3, the present invention is to tunnel circumferential direction, and advanced slip casting and slurry seal targetedly acts on, especially in mud stone, carbonaceous mud
The joint fissures such as rock, silt edge are few, and the location of rich groundwater, have the second slip casting region as plugging action, the first slip casting
Slurries in region would not follow backflow of underground water and go out, but be squeezed within surrounding rock structure by pressure, form splitting note
The effect of slurry, the present invention are suitable for all Tunnel Engineering of highway, high-speed railway, town road, are suitable for all rock stratum
Tunnel is advanced, circumferential slip casting, splitting can be played the role of in the country rock of crack agensis, can be effective in common country rock
Play the role of slurry seal.So construct using double-walled grouting with small pipe device, have that at low cost, effect is good, can really solve
Certainly slurry seal and the effect of splitting soft stratum in constructing tunnel.
4, not only constructing operation is easy by the present invention, and principle is easy-to-understand, common laborer all can ease of Use, and material is basic
On be the market universal product, have many advantages, such as that at low cost, buying is convenient, this construction technology method is simple, safety, strong applicability,
Guaranteed to environmental quality, drainage effect is strong, and construction quality is guaranteed, and now the construction speed of current highway in China is very fast,
The quantity in middle tunnel is very huge, and special geology is also to emerge one after another, " double-walled grouting with small pipe device and its construction of formation
Method " market popularization value is very extensive, while also having higher promotional value in railway, urban construction.Table 1 is that double-walled is small
Conduit grouting device and its construction method Economic and Efficiency Analysis table.
1 double-walled grouting with small pipe device of table and its construction method Economic and Efficiency Analysis table
5, application example
The conspicuous highway Yunnan Guizhou Province tunnel tunnel overall length 4900m in town, belongs to high methane, high-ground stress, large deformation tunnel, tunnel
It is eluvial layer that upper overburden layer, which is the 4th, silty clay containing rubble；Subterrane be the Permian System in unite Lungtan Formation (P2L) sandstone,
Argillaceous siltstoue presss from both sides carbonaceous mudstone and coal seam, unite in the Permian System Changxing Group (P2c) limestone, marl, argillaceous siltstoue and sandstone,
Lower Triassic flies celestial pass group (T1f) argillaceous siltstoue, sandstone presss from both sides limestone, and geological condition is complicated, rich groundwater.It was constructing
Cheng Zhong carries out slip casting using common grouting process and is unable to reach slip casting effect completely, and slurries sealing of hole effect is not all right, using double
After the construction of wall grouting with small pipe device, to just be readily solved the problem of slip casting effect.
In conclusion the present invention has speed of application fast, slip casting effect is good, and structure is simple, easy to use, slip casting effect
Sorrow, beneficial effect at low cost.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of double-walled grouting with small pipe device of the present invention；
Fig. 2 is the structural schematic diagram of the second slip casting casing of the invention；
Fig. 3 is operation schematic diagram of the invention；
Fig. 4 is the structural schematic diagram of Grouting Pipe in the prior art.
The label in accompanying drawing is: the second slip casting of 1- region, the first slip casting of 2- region, 3- fixing end, the free end 4-, 5- first
Gate valve, the second gate valve of 6-, the first Grouting Pipe of 7-, 8- the second slip casting casing, the second injected hole of 9-, the first injected hole of 10-, 11- cone
Shape structure, 12- gate valve, 13- Grouting Pipe, 14- injected hole.
Specific embodiment
The present invention is further illustrated with reference to the accompanying drawings and examples, but be not intended as to the present invention limit according to
According to.
Embodiment.A kind of double-walled grouting with small pipe device and its construction method constitute as shown in Figs 1-4, include first
Grouting Pipe 7,7 upper end of the first Grouting Pipe are cased with the second slip casting casing 8, and 8 the first Grouting Pipe 7 of top of the second slip casting casing is equipped with the
One gate valve 5 is equipped with the second gate valve 6,8 the first slip casting of lower section of the second slip casting casing close to the second slip casting casing 8 of the first gate valve 5
The first injected hole 10 is evenly distributed on pipe 7；The second slip casting is evenly distributed on second slip casting casing 8 of 6 lower section of the second gate valve
Hole 9.
The lower end of first Grouting Pipe 7 is pyramidal structure 11, is inserted in the hole convenient for double-walled grouting with small pipe device.
First Grouting Pipe 7 of 8 lower end of the second slip casting casing is free end 4, and the slip casting region of the first injected hole 10 is
First slip casting region 2；Second slip casting casing 8 of 6 lower end of the second gate valve is fixing end 3, the slip casting region of the second injected hole 9
For the second slip casting region 1.
The construction method of the double-walled grouting with small pipe device, includes following steps:
A, it is drilled using YT-28 air drill, angle is 10-15 °, and the spacing between Kong Yukong is 5-6m, drillable length
For the length of double-walled ductule, duct is purged using high-pressure blast after drilling, hole endoparticle, impurity are blown out into hole
Outside；
B, after being inserted into double-walled grouting with small pipe device in molded hole, the double-walled grouting with small pipe outside hole is filled
It sets and is fixed on the fashioned iron stood, be fixed using welding procedure；
C, 3 slip casting of fixing end: the grouting pressure of slip casting machine is 0.5-1Mpa, and slip casting machine is connect with the second gate valve 6, the second lock
Valve 6 is opened, and slip casting machine enters accelerated cement in the second slip casting casing 8 through the second gate valve 6, the rapid hardening in the second slip casting casing 8
Cement injects in the second slip casting region 1 through the second injected hole 9, and the dilation angle in the second slip casting region 1 is 0.3-0.5m, and slip casting is complete
Finish, and after reaching presetting period 8-13min；
D, 4 slip casting of free end: the grouting pressure of slip casting machine is 5-10Mpa, and slip casting machine is connect with the first gate valve 5, the first lock
Valve 5 is opened, and slip casting machine enters cement in the first Grouting Pipe 7 through the first gate valve 5, and the cement in the first Grouting Pipe 7 is through the first note
It starches hole 10 to inject in the first slip casting region 2, the dilation angle in the first slip casting region 2 is 2.5-3m, after slip casting；
E, the double-walled grouting with small pipe device cancelled outside to hole is fixed, and double-walled grouting with small pipe device is taken out of hole
After out, sealing of hole completes slip casting.
Claims (8)
1. a kind of double-walled grouting with small pipe device, it is characterised in that: include the first Grouting Pipe (7), the first Grouting Pipe (7) upper end
It is cased with the second slip casting casing (8), the first Grouting Pipe (7) is equipped with the first gate valve (5) above the second slip casting casing (8), close to the
Second slip casting casing (8) of one gate valve (5) is equipped with the second gate valve (6), the first Grouting Pipe (7) below the second slip casting casing (8)
On be evenly distributed with the first injected hole (10)；The second note is evenly distributed on the second slip casting casing (8) below second gate valve (6)
It starches hole (9).
2. double-walled grouting with small pipe device according to claim 1, it is characterised in that: under first Grouting Pipe (7)
End is pyramidal structure (11).
3. double-walled grouting with small pipe device according to claim 2, it is characterised in that: under the second slip casting casing (8)
First Grouting Pipe (7) at end is free end (4), and the slip casting region of the first injected hole (10) is the first slip casting region (2)；Described
The second slip casting casing (8) of two gate valves (6) lower end is fixing end (3), and the slip casting region of the second injected hole (9) is the second slip casting area
Domain (1).
4. the construction method of double-walled grouting with small pipe device according to claim 3, it is characterised in that: include following step
It is rapid:
A, it drills, angle is 10-15 °, and drillable length is the length of double-walled ductule, borehole cleaning after drilling；
B, after being inserted into double-walled grouting with small pipe device in molded hole, the double-walled grouting with small pipe device outside hole is consolidated
It is fixed；
C, fixing end (3) slip casting: slip casting machine is connect with the second gate valve (6), and the second gate valve (6) is opened, and slip casting machine is by accelerated cement
Enter in the second slip casting casing (8) through the second gate valve (6), the accelerated cement in the second slip casting casing (8) is through the second injected hole (9)
It injects in the second slip casting region (1), slip casting finishes, and after reaching the presetting period；
D, free end (4) slip casting: slip casting machine is connect with the first gate valve (5), and the first gate valve (5) is opened, and slip casting machine is by cement through the
One gate valve (5) enters in the first Grouting Pipe (7), and the cement in the first Grouting Pipe (7) injects the first note through the first injected hole (10)
It starches in region (2), after slip casting；
E, the double-walled grouting with small pipe device cancelled outside to hole is fixed, and double-walled grouting with small pipe device is taken out out of hole
Afterwards, sealing of hole completes slip casting.
5. the construction method of double-walled grouting with small pipe device according to claim 4, it is characterised in that: the step (A)
In, drilling uses YT-28 air drill, and the spacing between Kong Yukong is 5-6m；Borehole cleaning is specifically after drilling using height after drilling
Pressure wind purges duct, will be outside hole endoparticle, impurity blowout hole.
6. the construction method of double-walled grouting with small pipe device according to claim 4, it is characterised in that: the step (B)
In, the double-walled grouting with small pipe device outside hole is fixed on the fashioned iron stood, is fixed using welding procedure.
7. the construction method of double-walled grouting with small pipe device according to claim 4, it is characterised in that: the step (C)
In, the grouting pressure of slip casting machine is 0.5-1Mpa, and the dilation angle in the second slip casting region (1) is 0.3-0.5m；Presetting period is
8-13min。
8. the construction method of double-walled grouting with small pipe device according to claim 4, it is characterised in that: the step (D)
In, the grouting pressure of slip casting machine is 5-10Mpa, and the dilation angle in the first slip casting region (2) is 2.5-3m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910844642.2A CN110454200A (en) | 2019-09-06 | 2019-09-06 | A kind of double-walled grouting with small pipe device and its construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910844642.2A CN110454200A (en) | 2019-09-06 | 2019-09-06 | A kind of double-walled grouting with small pipe device and its construction method |
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| CN110454200A true CN110454200A (en) | 2019-11-15 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110924989A (en) * | 2019-12-23 | 2020-03-27 | 上海市基础工程集团有限公司 | Grouting device for tunnel construction |
| CN117536618A (en) * | 2024-01-10 | 2024-02-09 | 贵州桥梁建设集团有限责任公司 | Hydraulic auxiliary splitting equipment for rock breaking |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110924989A (en) * | 2019-12-23 | 2020-03-27 | 上海市基础工程集团有限公司 | Grouting device for tunnel construction |
| CN110924989B (en) * | 2019-12-23 | 2021-05-28 | 上海市基础工程集团有限公司 | Grouting device for tunnel construction |
| CN117536618A (en) * | 2024-01-10 | 2024-02-09 | 贵州桥梁建设集团有限责任公司 | Hydraulic auxiliary splitting equipment for rock breaking |
| CN117536618B (en) * | 2024-01-10 | 2024-03-12 | 贵州桥梁建设集团有限责任公司 | Hydraulic auxiliary splitting equipment for rock breaking |
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