CN207583394U - A kind of band mould negative pressure mud jacking system for tunnel double-lining - Google Patents
A kind of band mould negative pressure mud jacking system for tunnel double-lining Download PDFInfo
- Publication number
- CN207583394U CN207583394U CN201721669035.XU CN201721669035U CN207583394U CN 207583394 U CN207583394 U CN 207583394U CN 201721669035 U CN201721669035 U CN 201721669035U CN 207583394 U CN207583394 U CN 207583394U
- Authority
- CN
- China
- Prior art keywords
- mud jacking
- high pressure
- lining
- hose
- steel wire
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- Legal status (The legal status 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 status listed.)
- Expired - Fee Related
Links
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 72
- 239000010959 steel Substances 0.000 claims abstract description 72
- 210000003205 muscle Anatomy 0.000 claims abstract description 16
- 239000000835 fiber Substances 0.000 claims abstract description 9
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 8
- 238000009415 formwork Methods 0.000 claims abstract description 6
- 230000000694 effects Effects 0.000 abstract description 2
- 239000002002 slurry Substances 0.000 description 8
- 238000010276 construction Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229920002472 Starch Polymers 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000011083 cement mortar Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 235000013599 spices Nutrition 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Lining And Supports For Tunnels (AREA)
Abstract
The utility model provides a kind of band mould negative pressure mud jacking system for tunnel double-lining, and structure is：Hole is uniformly distributed on high pressure steel wire mud jacking hose；High pressure steel wire mud jacking hose is arranged along splash guard, and is placed between splash guard and two lined steel muscle, and is fixed on two lined steel muscle with U-shaped reinforcing bar clamp ring at spacing intervals；High pressure steel wire mud jacking hose one end seals and is fixed in two lined steel muscle, and the other end is fixed on the template mud jacking hole of two lining trolley formwork ends；Template mud jacking hole connects high pressure steel fiber tube, and high pressure steel fiber tube is connected to mudjack, and mudjack is connected to blender；PPR exhaust pipes one end is placed in by template gas vent in two lining cavities, and one end is connected with three-way connection, and the another both ends of three-way connection connect discharge pipe and vacuum pump respectively.The utility model improves the plumpness and compactness of two lining mud jacking, avoids vault and comes to nothing the generation of problem, while shortened for two lining mud jacking activity durations.
Description
Technical field
The utility model is related to tunnel double-lining Grouting Technology field, specially a kind of band mould negative pressure pressure for tunnel double-lining
Slurry system.
Background technology
Metro construction has tended to the white-hot stage at present, high-quality, high standard tunnel construction technology to rapidly sending out
Decisive role is played in the subway construction of exhibition, and two lining constructions in constructing tunnel are then the key links of constructing tunnel.Needle
It constructs to current domestic tunnel double-lining, compactness, the plumpness of two lining mud jacking are but particularly important, and two traditional lining mud jacking
Technique not only construct it is cumbersome influence two lining presentation qualities, but also two lining construction periods, the various resources of waste can be extended, it is prior
It is to serve as a contrast mud-jacking technologies using traditional two, air cannot exclude in cavity, can make to contain a large amount of gas in the slurry of press-in in this way
Bubble, causes two backing portion to form cavity or come to nothing, and leads to two lining structure leakiness, reduces by two lining bearing capacitys, promotes under vault
It is heavy to cause major safety risks.
Utility model content
The technical problem to be solved by the utility model is to provide a kind of band mould negative pressure mud jacking system for tunnel double-lining,
Solve two lining mud jacking leakiness in conventional method, it is not full caused by two lining structure bearing capacitys reduce, vault sinking problem.
In order to solve the above technical problems, the technical solution adopted in the utility model is：
A kind of negative pressure mud jacking system for tunnel double-lining, including high pressure steel wire mud jacking hose, the high pressure steel wire mud jacking
Hole is uniformly distributed on hose；The high pressure steel wire mud jacking hose is arranged along splash guard, and is placed in splash guard and two lined steel muscle
Between, and be fixed on two lined steel muscle with U-shaped reinforcing bar clamp ring at spacing intervals；High pressure steel wire mud jacking hose one end seals and consolidates
It is scheduled in two lined steel muscle, the other end is fixed on the template mud jacking hole of two lining trolley formwork ends；
Template mud jacking hole connects high pressure steel fiber tube, and the high pressure steel fiber tube is connected to mudjack, and the mudjack reconnects
To blender；
PPR exhaust pipes are provided with, described PPR exhaust pipes one end is placed in by template gas vent in two lining cavities, and one end connects
Three-way connection is connected to, the another both ends of three-way connection connect discharge pipe and vacuum pump respectively.
Further, another high pressure steel wire mud jacking hose, referred to as the second high pressure steel wire mud jacking hose are additionally provided with；Second
High pressure steel wire mud jacking hose is equally arranged along splash guard, and is placed between splash guard and two lined steel muscle, and sealed end is arranged in
The mud jacking extreme direction of one high pressure steel wire mud jacking hose, mud jacking end are arranged in the sealed end of first high pressure steel wire mud jacking hose
Direction.
Further, the PPR exhaust pipe lengths are 60cm, are provided with twice notch in one end, slot opening 6mm is deep
10mm。
Further, the hole diameter of the high pressure steel wire mud jacking hose is 6mm, and hole spacing is 5cm.
Further, the spacing between each U-shaped reinforcing bar clamp ring is 50cm.
Compared with prior art, the beneficial effects of the utility model are：1st, artificial, mechanical, material consumption is saved, and
Construction technology is relatively simple；2nd, the plumpness and compactness of two lining mud jacking are improved；3rd, vault is avoided to come to nothing the generation of problem；
4th, shortened for two lining mud jacking activity durations；5th, the expense of later stage defect processing is reduced.
Description of the drawings
Fig. 1 is for the negative pressure mud jacking overall system architecture of tunnel double-lining and arrangement schematic diagram in the utility model.
Fig. 2 is that the utility model mesohigh steel wire madjack pipe fixes schematic diagram.
Fig. 3 is the enlarged diagram at position shown in A in Fig. 2.
Fig. 4 is the structure diagram after the processing of PPR exhaust pipes in the utility model.
In figure：In figure：1- high pressure steel wire mud jacking hoses；Bis- lined steel muscle of 2-；3-U steel bar snap rings；4- splash guards；5- mud jacking
Pump；6- blenders；7- vacuum pumps；8- discharge pipes；9- ball valves；10- template gas vents；11- bis- serves as a contrast trolley formwork；12- template pressures
Starch hole.Note：Second high pressure steel wire mud jacking hose belongs to high pressure steel wire mud jacking hose, is intended merely to the differentiation of description, therefore, still
So represented with label 1.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawings and detailed description.
The utility model mud jacking system includes high pressure steel wire mud jacking hose 1, PPR exhaust pipes, mudjack 5, blender 6 and true
Sky pump 7.Mudjack 5 should have multistage pressure control, and mud jacking pressure is detected by pressure gauge during mud jacking, is controlled.
In addition, mud jacking equipment, should have the active control unit for mixing slurry water, so as to water that is simple, facilitating control additional.The spice
Machine 6 should use high-speed mixing equipment, and the rotating speed of blade is at least 1000rpm, the ceiling for accumulation speed of blade be limited in 15m/sec with
Interior, the mixing time is no more than 6min.High pressure steel wire mud jacking hose 1 is the mud jacking hose of Φ 32.PPR exhaust pipes are the row of Φ 32
Tracheae.
Specifically, mud jacking system in the utility model, structure are：Including high pressure steel wire mud jacking hose 1, the high pressure steel
Hole is uniformly distributed on silk mud jacking hose 1；The high pressure steel wire mud jacking hose 1 is arranged, and be placed in splash guard 4 along splash guard 4
Between two lined steel muscle 2, and it is fixed on two lined steel muscle 2 with U-shaped reinforcing bar clamp ring 3 at spacing intervals；High pressure steel wire mud jacking is soft
1 one end of pipe seals and is fixed in two lined steel muscle 2, and the other end is fixed on the template mud jacking hole 12 of two lining trolley formworks, 11 end；
Template mud jacking hole 12 connects high pressure steel fiber tube, and the high pressure steel fiber tube is connected to mudjack 5, and the mudjack 5, which is connected to, to be mixed
Material machine 6；PPR exhaust pipes are provided with, described PPR exhaust pipes one end is placed in by template gas vent 10 in two lining cavities, and one end connects
Three-way connection is connected to, the another both ends of three-way connection connect discharge pipe 8 and vacuum pump 7 respectively.
It delays work rate to promote working efficiency and reducing, is additionally provided with another high pressure steel wire mud jacking hose 1, referred to as second
High pressure steel wire mud jacking hose 1；Second high pressure steel wire mud jacking hose 1 is equally arranged along splash guard 4, and is placed in the lining of splash guard 4 and two
Between reinforcing bar 2, sealed end is arranged in the mud jacking extreme direction of first high pressure steel wire mud jacking hose 1, and mud jacking end is arranged in
The sealing extreme direction of one high pressure steel wire mud jacking hose 1.
The mud jacking method of the utility model negative pressure mud jacking system, includes the following steps：
Step 1：PPR exhaust pipes are connected to three-way connection by ring flange at template exhaust pipe, another the two of three-way connection
Head connects discharge pipe 8 and vacuum pump 7 respectively；The high pressure steel wire mud jacking hose 1 for being fixed on mud jacking hole ring flange is passed through into connection
Ring flange is connect by connector with mudjack 5；Later, spare template mud jacking hole 12 and template gas vent 10 are closed；Step 2：It adopts
Air in cavity is extracted between two lining concrete with vacuum pump 7, the constant pressure negative pressure that generation is certain is made in the cavity in；Step 3：Open mud jacking
5 mud jacking are pumped, after mud jacking is full, are kept for the voltage stabilizing phase of certain time；Step 4：It carries out pressure and mends slurry, until there is homogeneous slurry in outlet
Outflow.
During realization, it can be carried out by mode particularized below：32 high pressure steel wire mud jacking hoses 1 of Φ are punched in advance and are added
Work punches spacing 5cm, and hole diameter 6mm, hole is arranged in blossom type, is sealed after punching with adhesive tape.PPR is arranged
Tracheae is processed in advance, and length interception 60cm, both ends are truncated, and twice notch, slot opening 6mm, deep 10mm are opened in one end.Each U
Spacing between steel bar snap ring 3 is 50cm.The range of constant pressure negative pressure is -0.06Mpa to -0.08Mpa.In step 3, mud jacking
The mud jacking pressure of pump 5 is less than 0.6Mpa.More optimizing, the mud jacking pressure limit of mudjack 5 is maintained at 0.5Mpa to 0.6Mpa, and
Voltage stabling control is more than 3min.In step 4, the pressure that pressure mends slurry is 0.5Mpa, voltage stabling control 5min.
The utility model mud jacking System Working Principle is：When two lined steel muscle 2 are bound, it is being most disadvantageous in tunnel double-lining concrete
The high pressure steel wire mud jacking hose 1 that the pre-buried twice of section part poured are made in advance, the high pressure steel wire mud jacking hose 1 are accomplished fluently in advance
Hole uses rubber belt sealing；One 1 one end of high pressure steel wire mud jacking hose seals and is fixed in two lined steel muscle 2, and the other end is fixed on
The end mud jacking hole of two lining trolley formworks 11, another then direction is pre-buried in contrast is fixed on trolley tail portion mud jacking hole, in platform
At vehicle mud jacking hole mudjack 5 is connected to high pressure steel fiber tube.Using two lining trolleys, treat that two lining concrete initial sets can carry out mud jacking and apply
Work before mud jacking, first with three-way connection connection PPR exhaust pipes pre-buried in advance, then passes through PPR exhaust pipes with vacuum pump 7 and draws two
Lining cavity in air, the vacuum degree in cavity is made to reach 0.06~0.08MPa of negative pressure, then the other end with mudjack 5 with
The pressure of 0.4~0.6MPa is empty by two lining of the M20 micro-expansibilities cement mortar being stirred press-in.When a wherein high pressure steel wire
The blocking of mud jacking hose 1 can start another 1 operation of high pressure steel wire mud jacking hose when being unable to mud jacking, can accomplish that precautions averts perils in this way,
Squeezing quality can also be improved by greatly improving mud jacking efficiency.Due to there was only a small amount of air in cavity, slurry is hardly formed this method
Bubble causes cavity；Simultaneously as the positive/negative-pressure force difference in cavity between mudjack 5, is not only " to press " and be the increase in
The function of " suction ", the push and draw force formed under this suction function greatly improve the full weight and compactness of slurry in cavity, from
And it is uncompacted to efficiently solve the problems, such as that tradition two serves as a contrast mud jacking.
Claims (5)
1. a kind of band mould negative pressure mud jacking system for tunnel double-lining, which is characterized in that
Including high pressure steel wire mud jacking hose (1), hole is uniformly distributed on the high pressure steel wire mud jacking hose (1)；The high pressure
Steel wire mud jacking hose (1) is arranged along splash guard (4), and is placed between splash guard (4) and two lined steel muscle (2), and between certain
Away from being fixed on two lined steel muscle (2) with U-shaped reinforcing bar clamp ring (3)；High pressure steel wire mud jacking hose (1) one end seals and is fixed on two linings
In reinforcing bar (2), the other end is fixed on the template mud jacking hole (12) of two lining trolley formwork (11) ends；
Template mud jacking hole (12) connects high pressure steel fiber tube, and the high pressure steel fiber tube is connected to mudjack (5), the mudjack (5)
It is connected to blender (6)；
PPR exhaust pipes are provided with, described PPR exhaust pipes one end is placed in by template gas vent (10) in two lining cavities, and one end connects
Three-way connection is connected to, the another both ends of three-way connection connect discharge pipe (8) and vacuum pump (7) respectively.
2. a kind of band mould negative pressure mud jacking system for tunnel double-lining as described in claim 1, which is characterized in that be additionally provided with
Another high pressure steel wire mud jacking hose (1), referred to as the second high pressure steel wire mud jacking hose (1)；Second high pressure steel wire mud jacking hose (1)
It equally arranges, and is placed between splash guard (4) and two lined steel muscle (2) along splash guard (4), sealed end is arranged in first high pressure
The mud jacking extreme direction of steel wire mud jacking hose (1), mud jacking end are arranged in the sealed end side of first high pressure steel wire mud jacking hose (1)
To.
A kind of 3. band mould negative pressure mud jacking system for tunnel double-lining as described in claim 1, which is characterized in that the PPR
Exhaust pipe length is 60cm, and twice notch, slot opening 6mm, deep 10mm are provided in one end.
A kind of 4. band mould negative pressure mud jacking system for tunnel double-lining as described in claim 1, which is characterized in that the high pressure
The hole diameter of steel wire mud jacking hose (1) is 6mm, and hole spacing is 5cm.
5. a kind of band mould negative pressure mud jacking system for tunnel double-lining as described in claim 1, which is characterized in that each U-shaped
Spacing between reinforcing bar clamp ring (3) is 50cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721669035.XU CN207583394U (en) | 2017-12-05 | 2017-12-05 | A kind of band mould negative pressure mud jacking system for tunnel double-lining |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721669035.XU CN207583394U (en) | 2017-12-05 | 2017-12-05 | A kind of band mould negative pressure mud jacking system for tunnel double-lining |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207583394U true CN207583394U (en) | 2018-07-06 |
Family
ID=62735265
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721669035.XU Expired - Fee Related CN207583394U (en) | 2017-12-05 | 2017-12-05 | A kind of band mould negative pressure mud jacking system for tunnel double-lining |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207583394U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107795324A (en) * | 2017-12-05 | 2018-03-13 | 中国水利水电第五工程局有限公司 | A kind of band mould negative pressure mud jacking system and mud jacking method for tunnel double-lining |
-
2017
- 2017-12-05 CN CN201721669035.XU patent/CN207583394U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107795324A (en) * | 2017-12-05 | 2018-03-13 | 中国水利水电第五工程局有限公司 | A kind of band mould negative pressure mud jacking system and mud jacking method for tunnel double-lining |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| 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: 20180706 |