CN203161249U - Sleeve valve pipe grouting reinforcing system for soil between tunnels - Google Patents
Sleeve valve pipe grouting reinforcing system for soil between tunnels Download PDFInfo
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- CN203161249U CN203161249U CN 201320105858 CN201320105858U CN203161249U CN 203161249 U CN203161249 U CN 203161249U CN 201320105858 CN201320105858 CN 201320105858 CN 201320105858 U CN201320105858 U CN 201320105858U CN 203161249 U CN203161249 U CN 203161249U
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- sleeve valve
- valve pipe
- tunnels
- hole
- pipes
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- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The utility model discloses a sleeve valve pipe grouting reinforcing system for soil between tunnels. The sleeve valve pipe grouting reinforcing system is characterized by comprising sleeve valve pipes, wherein the sleeve valve pipes are arranged in the soil between the two tunnels and divided into two groups; each group of sleeve valve pipes are distributed radially in a fan-shaped manner; and the two groups of sleeve valve pipes are symmetrical. The sleeve valve pipes are phi 48*3.2mm plastic sleeve valve pipes. Each group of sleeve valve pipes are distributed in ten rows. Grids of the sleeve valve pipes are arranged along an arch part. The circumferential distances between the far ends of the sleeve valve pipes are 0.8m. The sleeve valve pipes are phi 48 hard PVC (polyvinyl chloride) pipes, so that the system can bear the maximum pressure of greater than 3.0Mpa. The sleeve valve pipes are distributed reasonably in the soil between the two tunnels, so that the construction safety of buildings, structures and the tunnels around a project is ensured.
Description
Technical field
The utility model relates to soil body sleeve valve pipe grouting and reinforcing system between hole, a kind of tunnel.
Background technology
Along with the development in city, in order to alleviate the crowded of aboveground space, the underground space is adding great development.In the city, geological conditions is complicated and changeable, and the above and below ground construction of structures is intricate, and is very responsive to the stratum sedimentation reaction.In the process of subway and the development of other underground engineering construction, tending to run into the situation that need pass through the above and below ground construction of structures, how to guarantee the safety of engineering periphery construction of structures and constructing tunnel, is the main difficult problem that construction faces.
The utility model content
Technical problem to be solved in the utility model provides between hole, a kind of tunnel soil body sleeve valve pipe grouting and reinforcing system, has solved tunnel reinforcement, has guaranteed the problem of engineering periphery construction of structures and safety for tunnel engineering.
Technical problem to be solved in the utility model is achieved through the following technical solutions:
Soil body sleeve valve pipe grouting and reinforcing system between hole, a kind of tunnel is characterized in that: comprise sleeve valve pipe, described sleeve valve pipe is located in the soil body between the hole, two tunnels, totally 2 groups of sleeve valve pipes, and every group all is radially fan-shaped distribution, is symmetrical arranged between two groups.
Described sleeve valve pipe adopts φ 48mm * 3.2mm plastics sleeve valve pipe.
Described sleeve valve pipe is laid 10 rows for every group.
The every Pin grid of described sleeve valve pipe sets, and sets along the arch.
Described sleeve valve pipe far-end circumferential distance is 0.8m.
The utility model with respect to the beneficial effect of prior art is:
The slip casting of sleeve valve pipe is after slurries are through the grouting pump pressurization, enter Grouting Pipe by tube connector, gather sleeve valve pipe slip casting pipeline section, then by sleeve valve pipe, under pressure, pressurized slurries will produce along earth formation and fill, infiltration, densification, splitting is flowed, slurries form induration in the stratum, thereby reach the increase formation strength, reduce the purpose of stratum permeability, native system adopts Φ 48 hard PVC pipes, the maximum pressure that can bear is greater than 3.0Mpa, and by the reasonably laying of sleeve valve pipe, in the soil body between the hole, two tunnels, guarantee engineering periphery construction of structures and safety for tunnel engineering.
Description of drawings
Fig. 1 is the utility model structural representation
Among the figure: the soil body between the hole, 1-two tunnel, 2-sleeve valve pipe
The specific embodiment
Shown in Fig. 1-2, soil body sleeve valve pipe grouting and reinforcing system between hole, a kind of tunnel is characterized in that: comprise sleeve valve pipe, described sleeve valve pipe is located in the soil body between the hole, two tunnels, totally 2 groups of sleeve valve pipes, and every group all is radially fan-shaped distribution, is symmetrical arranged between two groups.
Described sleeve valve pipe adopts φ 48mm * 3.2mm plastics sleeve valve pipe.
Described sleeve valve pipe is laid 10 rows for every group.
The every Pin grid of described sleeve valve pipe sets, and sets along the arch.
Described sleeve valve pipe far-end circumferential distance is 0.8m.
Sleeve valve pipe grouting construction method is as follows:
1. setting-out location: mark at face by the basic point coordinate with total powerstation earlier that the 1.5m line is as location cloth point coordinates XY axle on tunnel center line, the springing line, again by these coordinate point, the method that adopts backguy and tape measure to measure is made boring position, hole.
2. rig boring:
1) boring vertical plane error≤5cm, bore angle≤± 1 degree, drilling depth 0.5～1.0m.
2) rig in place after, should make drilling machine platform smooth firm, before spudding in, utilize level gauge to make bore angle, and when creeping into 2m and after whenever add a joint drilling rod and all need proofread and correct the rig leveling.
3) in the boulder bed for preventing the hole of collapsing of holing, adopt sleeve pipe follow-up boring, finish boring after, install Grouting Pipe after, sleeve pipe is extracted.
4) for guaranteeing drilling quality, should note: 1. when boring, guarantee that rotating speed is even; 2. when changing drilling rod, drilling rod promotes should keep vertical with putting down, in order to avoid reaming.
5) after boring reaches projected depth, carry out borehole log.
3. install sleeve valve pipe
Insert sleeve valve pipe after boring finishes immediately, pipe is connected by the street corner of screw thread by every joint 3m, and pipe end adds the stifle sealing, and pipe seal is reliable.After the every joint of sleeve valve pipe connects, transfer to successively in the boring, at the bottom of the hole, guarantee as far as possible when transferring that the center of sleeve valve pipe overlaps with drill center.The upper end that guarantees sleeve valve pipe exposes face 10～20cm, entangles firm with pullover again, prevents that foreign material from entering in the pipe.
4. clear hole
Sleeve valve pipe installs plug, and to injecting clear water in the pipe, according to scene excessive slurry hole length (30cm/ section), whether segmentation inspection sleeve valve pipe slurry discharging hole is unimpeded.
5. notes sleeve shell material
Sleeve shell material is generally based on swell soil, cement is auxilliary the composition, is mainly used in sealing the annulus between sleeve valve pipe and the borehole wall, and slurries flee hither and thither when preventing from being in the milk, under the effect of rubber sleeve and stop grouting plug, force in the grout compartment scope and to squeeze broken sleeve shell material (being open loop) and enter the stratum.
The quality of sleeve shell material cast is to guarantee that slip casting is the key that guarantees the slip casting success or not, and its requirement can press off filler and carry out horizontal slip casting under certain pressure, can stop slurries to flow out the face of land along hole wall or tube wall when high-pressure slip-casting again.Sleeve shell material requires its fragility higher, and shrinkage is little, and mechanical strength is suitable, and the slurry that namely will prevent from going here and there is taken into account open loop again.
Mortar depositing construction is as follows:
Adopt KBY-70/16 type grouting pump that the slip casting operation is carried out on the stratum.Grouting mode adopts the retrusive segmenting slip casting, namely carries out slip casting by the outside segmentation of nose end in Grouting Pipe, each slip casting segment length 0.4～0.5m, has annotated this section after, retreat again and pour down one section, finish until the slip casting of full hole.Carry out detailed slip casting record in the slip casting process.
Slip casting employing water/binder ratio is single liquid cement paste of 1: 1,0.8: 1.According to on-the-spot slip casting test effect grouting serous fluid and proportioning are suitably adjusted.
1) pipe and two plug pipe connect and are put into sleeve valve pipe bottom in the slurry;
2) slurry output end of pipe top and grouting pump is connected in the slip casting, and the centre is connected to pressure meter;
3) by mixer preparation cement paste, the cement paste for preparing is injected in the plastic containers;
4) the slurry end that advances of grouting pump is put in the cement paste;
5) open hydraulic grouting pump and carry out slip casting, opening the gray scale of pouring water is 1: 1, enriching to 0.8 progressively in the mortar depositing construction: 1;
6) after grouting pressure reaches 0.8MPa and injection rate≤2L/min, keep more than 5 minutes, outer the pulling out of pipe in the slip casting carried out next section slip casting, every section length control of extracting is in 50cm.
For prevent that slurries from solidifying in the pipe in slip casting, the slurries in container all are injected into sleeve valve Guan Zhonghou, need pipe in the slip casting is washed.Method is that the slurry end that advances of hydraulic grouting pump is put in the container that the people fills clear water, and sleeve valve pipe is injected clear water, and the volume of injection equals the volume of the long-pending and hydraulic grouting pump turnover laitance coating pipe of slip casting interior tube body.
2. grouting sequence
Outer endless tube behind the endless tube in adopting is earlier jumped the method in hole at interval and is holed and slip casting.
3. clear hole
After each slip casting is finished, carry out immediately cleaning in the hole, the cleaning hose pipe is inserted the bottom of sleeve valve pipe, be pressed into clear water, water base of putting back to until the aperture is clean, moves up and down water pipe repeatedly at flushing process Chinese medicine, after the cement paste that pipe is interior is rinsed well, be convenient to follow-up slip casting and carry out.
Check situation according to slip casting effect, need carry out secondary grouting, can carry out second compensation slip casting according to grouting mode first.
4. the monitoring measure during slip casting
In the slip casting process, monitor the sedimentation situation of ground and piping lane closely, the trend as finding that ground or piping lane are lifted on having stops slip casting immediately.
5. slip casting requirement
The mortar depositing construction parameter will be tested affirmation according to the stratum actual conditions, and constantly improves adjustment in the construction at the scene, and in the slip casting process, in conjunction with the grouting pressure situation of change, on-the-spot dynamically the adjustment optimized grouting parameter.According to engineering experience in the past, in conjunction with the sand-pebble layer characteristic, preset grouting parameter and see the following form.
Claims (5)
1. soil body sleeve valve pipe grouting and reinforcing system between hole, a tunnel is characterized in that: comprise sleeve valve pipe, described sleeve valve pipe is located in the soil body between the hole, two tunnels, totally 2 groups of sleeve valve pipes, and every group all is radially fan-shaped distribution, is symmetrical arranged between two groups.
2. soil body sleeve valve pipe grouting and reinforcing system between hole, tunnel as claimed in claim 1 is characterized in that: described sleeve valve pipe employing φ 48mm * 3.2mm plastics sleeve valve pipe.
3. soil body sleeve valve pipe grouting and reinforcing system between hole, tunnel as claimed in claim 1 is characterized in that: every group of laying of described sleeve valve pipe 10 rows.
4. soil body sleeve valve pipe grouting and reinforcing system between hole, tunnel as claimed in claim 1, it is characterized in that: the every Pin grid of described sleeve valve pipe sets, and sets along the arch.
5. soil body sleeve valve pipe grouting and reinforcing system between hole, tunnel as claimed in claim 1, it is characterized in that: described sleeve valve pipe far-end circumferential distance is 0.8m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320105858 CN203161249U (en) | 2013-03-08 | 2013-03-08 | Sleeve valve pipe grouting reinforcing system for soil between tunnels |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320105858 CN203161249U (en) | 2013-03-08 | 2013-03-08 | Sleeve valve pipe grouting reinforcing system for soil between tunnels |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203161249U true CN203161249U (en) | 2013-08-28 |
Family
ID=49022441
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320105858 Expired - Fee Related CN203161249U (en) | 2013-03-08 | 2013-03-08 | Sleeve valve pipe grouting reinforcing system for soil between tunnels |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203161249U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107201909A (en) * | 2017-06-16 | 2017-09-26 | 中铁二十四局集团安徽工程有限公司 | Swelled ground tunnel support structure and method |
-
2013
- 2013-03-08 CN CN 201320105858 patent/CN203161249U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107201909A (en) * | 2017-06-16 | 2017-09-26 | 中铁二十四局集团安徽工程有限公司 | Swelled ground tunnel support structure and method |
| CN107201909B (en) * | 2017-06-16 | 2023-06-13 | 中铁二十四局集团安徽工程有限公司 | Expansive soil tunnel supporting structure and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130828 |