CN110552721A - double-liquid wall post-grouting equipment - Google Patents
double-liquid wall post-grouting equipment Download PDFInfo
- Publication number
- CN110552721A CN110552721A CN201911010221.6A CN201911010221A CN110552721A CN 110552721 A CN110552721 A CN 110552721A CN 201911010221 A CN201911010221 A CN 201911010221A CN 110552721 A CN110552721 A CN 110552721A
- Authority
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- China
- Prior art keywords
- slurry
- pump
- mixer
- bentonite
- grouting
- Prior art date
- 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.)
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- 239000007788 liquid Substances 0.000 title claims abstract description 35
- 239000002002 slurry Substances 0.000 claims abstract description 110
- 238000002360 preparation method Methods 0.000 claims abstract description 35
- 239000011440 grout Substances 0.000 claims abstract description 25
- 229910000278 bentonite Inorganic materials 0.000 claims description 34
- 239000000440 bentonite Substances 0.000 claims description 34
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 34
- 239000004568 cement Substances 0.000 claims description 34
- 239000003381 stabilizer Substances 0.000 claims description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 20
- 238000007599 discharging Methods 0.000 claims description 18
- 235000019353 potassium silicate Nutrition 0.000 claims description 5
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 5
- 230000009977 dual effect Effects 0.000 claims 7
- 239000012530 fluid Substances 0.000 claims 4
- 230000005641 tunneling Effects 0.000 claims 1
- 239000000463 material Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- 238000003756 stirring Methods 0.000 description 6
- 238000010276 construction Methods 0.000 description 4
- 238000004260 weight control Methods 0.000 description 4
- 239000000654 additive Substances 0.000 description 2
- 238000004537 pulping Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011268 mixed slurry Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000005303 weighing Methods 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
-
- 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 double-liquid grouting equipment, which comprises a first slurry preparation device, a second slurry preparation device, a first pump, a second pump, a grouting pipe and a first controller, wherein the first pump is connected with the second pump; the first slurry preparation device is used for preparing first slurry and is communicated with the backfill grouting pipe through the first pump; the second slurry preparation device is used for preparing second slurry and is communicated with the backfill grouting pipe through the second pump; the post-grouting pipe is used for mixing the first grout and the second grout; the first pump, the second pump and the shield machine are all connected with the first controller, and the first controller is used for controlling the working speed of the first pump, the working speed of the second pump and the advancing speed of the shield machine. The double-liquid-wall post-grouting equipment provided by the invention can improve the fluidity of slurry and the grouting efficiency.
Description
Technical Field
The invention relates to the field of automatic grouting, in particular to double-liquid wall post-grouting equipment.
Background
In recent years, subway construction projects are more and more, and most of subway construction needs to be deployed at the lower part of the ground surface, but the problem of chassis sinking can be encountered in the construction process; in the prior art, aiming at the problem of chassis settlement, single-liquid wall post-grouting is adopted in the construction process, and the gap of the chassis is filled well through wall thickness grouting to prevent the chassis from settling; but the grouting efficiency is seriously affected due to the poor fluidity of the generated slurry.
based on the above problems, in order to solve the problem of poor slurry fluidity in the prior art, various additives are mixed in the slurry in the prior art, but the side length of the whole slurry mixing time is increased while the additives are mixed, the slurry making time is increased, and the slurry injection efficiency is also seriously influenced.
Disclosure of Invention
The invention aims to provide double-liquid wall post-grouting equipment, which solves the problems of poor slurry fluidity and poor grouting efficiency in the prior art.
In order to achieve the purpose, the invention provides the following scheme:
A kind of double liquid wall back grouting apparatus, connect with shield machine, including the first thick liquid preparation device, the second thick liquid preparation device, the first pump, the second pump, the wall back grouting pipe and the first controller; the first slurry preparation device is used for preparing first slurry and is communicated with the backfill grouting pipe through the first pump; the second slurry preparation device is used for preparing second slurry and is communicated with the backfill grouting pipe through the second pump; the post-grouting pipe is used for mixing the first grout and the second grout; the first pump, the second pump and the shield machine are all connected with the first controller, and the first controller is used for controlling the working speed of the first pump, the working speed of the second pump and the advancing speed of the shield machine.
Optionally, the first slurry preparation device comprises a cement barrel tank, a bentonite barrel tank, a stabilizer barrel tank, a water barrel, a mixer, a bentonite screw conveyor, a bentonite discharging pneumatic butterfly valve, a cement screw conveyor, a cement discharging pneumatic butterfly valve, a water pump, a stabilizer pump and a second controller; the cement barrel groove is connected with the mixer sequentially through the cement screw conveyer and the cement discharging pneumatic butterfly valve; the bentonite barrel groove is connected with the mixer sequentially through the bentonite screw conveyor and the bentonite discharging pneumatic butterfly valve; the water bucket is connected with the mixer through the water pump; the stabilizer barrel groove is connected with the mixer through the stabilizer pump;
the mixer is connected with the first pump and used for preparing first slurry;
the bentonite screw conveyor, the bentonite discharging pneumatic butterfly valve, the cement screw conveyor, the cement discharging pneumatic butterfly valve, the water pump and the stabilizer pump are all connected with the second controller;
Optionally, the first slurry preparation apparatus further includes:
And the slow mixer is arranged between the mixer and the first pump, is connected with the second controller and is used for mixing the first slurry.
Optionally, the mixer is a vertical shaft continuous mixer.
Optionally, the second slurry preparation apparatus includes:
And the water glass bucket groove is connected with the second pump and is used for preparing the second slurry.
Optionally, the mixing ratio of the first slurry to the second slurry is 10: 1.
Optionally, the slurry tank further comprises a first slurry tank and a second slurry tank; the first slurry barrel groove is arranged between the first slurry preparation device and the first pump and used for storing first slurry; the second slurry barrel tank is arranged between the second slurry preparation device and the second pump and used for storing second slurry.
Optionally, the liquid level detection device further comprises a first liquid level detector and a second liquid level detector; the first liquid level detector is arranged on the first slurry barrel groove and used for detecting the liquid level of the first slurry barrel groove; the second slurry level detector is arranged on the second slurry barrel groove and used for detecting the liquid level of the second slurry barrel groove.
According to the specific embodiment provided by the invention, the invention discloses the following technical effects: the invention provides double-liquid backfill grouting equipment which comprises a first grout preparation device, a second grout preparation device, a first pump, a second pump, a backfill grouting pipe and a first controller. Two kinds of grout of a first grout preparation device and a second grout preparation device are pumped into a post-grouting pipe through a first pump and a second pump, and the two kinds of grout are mixed through the post-grouting pipe; the two devices are used for preparing the slurry simultaneously, so that the mixing time of the slurry is greatly reduced, and the pulping time is shortened.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
Fig. 1 is a schematic structural view of a double-liquid wall post-grouting apparatus provided by the present invention.
Description of the drawings: 1-a first slurry preparation device, 2-a second slurry preparation device, 3-a first pump, 4-a second pump, 5-a grouting pipe behind the wall, 6-a shield machine and 7-a first controller.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention aims to provide double-liquid wall post-grouting equipment, which solves the problems of poor slurry fluidity and poor grouting efficiency in the prior art.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Fig. 1 is a schematic structural view of a double-liquid-wall grouting apparatus provided by the present invention, and as shown in fig. 1, the double-liquid-wall grouting apparatus provided by the present invention is connected to a shield machine 6.
The double-liquid grouting equipment comprises a first slurry preparation device 1, a second slurry preparation device 2, a first pump 3, a second pump 4, a grouting pipe 5 and a first controller 7; the first slurry preparation device 1 is used for preparing first slurry and is communicated with the backfill grouting pipe 5 through the first pump 3; the second slurry preparation device 2 is used for preparing second slurry and is communicated with the backfill grouting pipe 5 through the second pump 4; the post-grouting pipe 5 is used for mixing the first grout and the second grout; the first pump 3, the second pump 4 and the shield machine 6 are all connected with the first controller 7, and the control is used for controlling the working speed of the first pump 3, the working speed of the second pump 4 and the advancing speed of the shield machine 6.
The first pump 3 and the second pump 4 are used for pumping out the slurry from the pulping equipment at a specific speed and grouting. The first pump 3 and the second pump 4 are respectively controlled by a first controller 7 and are conveyed to the backfill grouting pipe 5 by using pipelines.
The first slurry preparation device 1 comprises a cement barrel groove, a bentonite barrel groove, a stabilizer barrel groove, a water barrel, a mixer, a bentonite screw conveyor, a bentonite discharging pneumatic butterfly valve, a cement screw conveyor, a cement discharging pneumatic butterfly valve, a water pump, a stabilizer pump and a second controller; the cement barrel groove is connected with the mixer sequentially through the cement screw conveyer and the cement discharging pneumatic butterfly valve; the bentonite barrel groove is connected with the mixer sequentially through the bentonite screw conveyor and the bentonite discharging pneumatic butterfly valve; the water bucket is connected with the mixer through the water pump; the stabilizer barrel groove is connected with the mixer through the stabilizer pump.
The mixer is connected with the first pump 3 and is used for preparing first slurry;
in practical application, the first slurry comprises 22-30% of cement, 3-5% of bentonite, 80-85% of water and 0.2-0.3% of a stabilizer.
The bentonite screw conveyor, the bentonite discharging pneumatic butterfly valve, the cement screw conveyor, the cement discharging pneumatic butterfly valve, the water pump and the stabilizer pump are all connected with the second controller.
The cement barrel groove is used for storing cement and opening a cement screw conveyor outside the barrel groove to convey the cement to the mixer.
The bentonite barrel groove is used for storing bentonite and opening a bentonite screw conveyor in the barrel groove to convey the bentonite to the mixer.
The mixer is the stirring core of the double-liquid-wall post-grouting equipment provided by the invention, and all materials are fully mixed in sequence.
The stabilizer barrel tank is used for storing the stabilizer and conveying the stabilizer to the mixer through the stabilizer pump by using a pipeline for stirring.
The bucket is used for storing water and cleaning pipelines, and is conveyed to the mixer through a water pump application pipeline.
The cement discharging pneumatic butterfly valve and the bentonite discharging pneumatic butterfly valve are used for generating air through an air compressor, the valves are opened and closed by utilizing the air principle, and the opening and closing signals of the butterfly valves are controlled by the second controller.
In order to ensure that the prepared first slurry is not separated, the first slurry preparation apparatus 1 of the present invention further includes: a slow speed stirrer.
The slow mixer is arranged between the mixer and the first pump 3, is connected with the second controller and is used for mixing the first slurry.
The mixer drops the material into a slow mixer to store the mixed slurry, and the slurry is less prone to separation by using the slow mixing principle.
the volume of a stirring tank of the slow stirrer is 3.2-3.5 m 3.
In practical application, the mixer is a vertical shaft continuous mixer, the volume of a stirring tank of the vertical shaft mixer is 0.8-1.4 m 3, and the maximum production capacity is 15m 3/h.
The second slurry preparing apparatus 2 includes: a water glass bucket groove.
The water glass tank is connected with the second pump 4 and is used for preparing the second slurry.
The material of the second slurry was 8-9% water glass.
The mixing ratio of the first slurry to the second slurry was 10: 1.
The invention provides double-grout post-grouting equipment which further comprises a first grout barrel groove and a second grout barrel groove; the first slurry barrel tank is arranged between the first slurry preparation device 1 and the first pump 3 and used for storing first slurry; the second slurry tank is disposed between the second slurry preparing apparatus 2 and the second pump 4, and stores the second slurry.
In practical application, the double-liquid-level post-grouting equipment provided by the invention further comprises a first liquid level detector and a second liquid level detector; the first liquid level detector is arranged on the first slurry barrel groove and used for detecting the liquid level of the first slurry barrel groove; the second slurry level detector is arranged on the second slurry barrel groove and used for detecting the liquid level of the second slurry barrel groove.
The liquid level detector can be divided into a probe type and an ultrasonic type.
In a specific embodiment, the control power supply of the double-liquid wall post-grouting equipment is 380V +/-10 percent and 50HZ +/-2 HZ.
In order to ensure the stable operation of the double-liquid-wall post-grouting equipment provided by the invention, the double-liquid-wall post-grouting equipment also comprises a weight control device and a pneumatic control device.
The weight control device and the pneumatic control device are respectively connected with the second controller.
The weight control device is used for three weighing modules on the mixer, is connected to the weight control device and is connected with the second controller, and the current material weight of the mixer can be displayed on the second controller.
The pneumatic control device is used for generating vibration in the process of conveying powder in a barrel groove (cement and bentonite) by utilizing the vibration principle, and the problem of material blockage in the conveying process is prevented.
The specific operation process in practical application is as follows:
(1) Inspection apparatus
The wiring of the device is checked for conformity with the circuit diagram.
Checking whether the circuit control system is operating normally.
The hardware device is checked for damage or anomalies.
each vat was checked for material.
Check if there is any other problem in the warning screen of the main panel.
And checking whether the setting of each parameter of the equipment is finished.
(2) And after the check meets the standard, starting the double-liquid wall post-grouting equipment.
And starting a stabilizer supply switch, starting a stabilizer supply pump to pump the stabilizer into the mixer, and closing the pump after the weight metering is finished.
And starting a water supply switch, starting a water supply pump to pump water into the mixer, and closing the pump after the weight metering is finished.
And (3) starting a bentonite supply switch, starting the bentonite pneumatic butterfly valve, then starting the screw conveyor to convey the bentonite into the mixer, and closing the screw conveyor and the pneumatic butterfly valve in sequence after the weight dosage is finished.
And (4) starting a switch of the mixer, starting the mixer, fully stirring for about two minutes, and then closing the switch of the mixer.
And starting a cement supply switch, starting the screw conveyer to convey cement to the mixer after a cement pneumatic butterfly valve is opened, and closing the screw conveyer and the pneumatic butterfly valve in sequence after the weight metering is finished.
And (3) starting a mixer switch, starting the mixer, fully stirring for about one minute, and then closing the mixer switch, thereby completing the slurry making operation of the first slurry for 1 time.
Open the pneumatic butterfly valve switch of blendor, once open the pneumatic butterfly valve switch after, first thick liquid can fall into the slow speed mixer of below, treats that weight in the blendor approaches to 0 time, can close the pneumatic butterfly valve switch of blendor.
The switch of the slow stirrer is started to make the slow stirrer rotate slowly, so that the slurry is not easy to separate.
The material in the slow mixer is pumped by the first pump 3 to the backfill grouting pipe 5 in the grouting equipment in the ground.
The second slurry material is pumped by the first pump 3 to a backfill grouting pipe 5 in the grouting equipment below ground.
The backfill pipe 5 mixes the first grout and the second grout and operates at the same rate as the shield machine 6.
The double-liquid wall back grouting equipment provided by the invention has the advantages that the first grout and the second grout are pumped into the underground wall back grouting pipe 5 by the pump, the first grout and the second grout are mixed through the wall back grouting pipe 5, and the generated grout can generate better fluidity compared with single grout.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The principles and embodiments of the present invention have been described herein using specific examples, which are provided only to help understand the method and the core concept of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (8)
1. A double-liquid backfill grouting device is connected with a shield tunneling machine and is characterized by comprising a first slurry preparation device, a second slurry preparation device, a first pump, a second pump, a backfill grouting pipe and a first controller; the first slurry preparation device is used for preparing first slurry and is communicated with the backfill grouting pipe through the first pump; the second slurry preparation device is used for preparing second slurry and is communicated with the backfill grouting pipe through the second pump; the post-grouting pipe is used for mixing the first grout and the second grout; the first pump, the second pump and the shield machine are all connected with the first controller, and the first controller is used for controlling the working speed of the first pump, the working speed of the second pump and the advancing speed of the shield machine.
2. The dual fluid wall post-grouting equipment of claim, wherein the first slurry preparation device comprises a cement barrel tank, a bentonite barrel tank, a stabilizer barrel tank, a bucket, a mixer, a bentonite screw conveyor, a bentonite discharge pneumatic butterfly valve, a cement screw conveyor, a cement discharge pneumatic butterfly valve, a water pump, a stabilizer pump and a second controller; the cement barrel groove is connected with the mixer sequentially through the cement screw conveyer and the cement discharging pneumatic butterfly valve; the bentonite barrel groove is connected with the mixer sequentially through the bentonite screw conveyor and the bentonite discharging pneumatic butterfly valve; the water bucket is connected with the mixer through the water pump; the stabilizer barrel groove is connected with the mixer through the stabilizer pump;
The mixer is connected with the first pump and used for preparing first slurry;
The bentonite screw conveyor, the bentonite discharging pneumatic butterfly valve, the cement screw conveyor, the cement discharging pneumatic butterfly valve, the water pump and the stabilizer pump are all connected with the second controller.
3. A dual slurry wall post-grouting apparatus according to claim 2, wherein said first slurry preparation means further comprises:
and the slow mixer is arranged between the mixer and the first pump, is connected with the second controller and is used for mixing the first slurry.
4. A dual liquid wall post-grouting apparatus as claimed in claim 2 or 3, characterized in that said mixer is of the vertical shaft continuous mixer type.
5. A dual slurry wall post-grouting apparatus according to claim 1, wherein said second slurry preparation means comprises:
And the water glass bucket groove is connected with the second pump and is used for preparing the second slurry.
6. A dual slurry wall grouting apparatus according to claim 1, wherein the mixing ratio of the first slurry to the second slurry is 10: 1.
7. A dual slurry wall post grouting apparatus according to claim 1, further comprising a first slurry barrel pit and a second slurry barrel pit; the first slurry barrel groove is arranged between the first slurry preparation device and the first pump and used for storing first slurry; the second slurry barrel tank is arranged between the second slurry preparation device and the second pump and used for storing second slurry.
8. The dual fluid backfill grouting apparatus according to claim 7, further comprising a first fluid level detector and a second fluid level detector; the first liquid level detector is arranged on the first slurry barrel groove and used for detecting the liquid level of the first slurry barrel groove; the second slurry level detector is arranged on the second slurry barrel groove and used for detecting the liquid level of the second slurry barrel groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911010221.6A CN110552721A (en) | 2019-10-23 | 2019-10-23 | double-liquid wall post-grouting equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911010221.6A CN110552721A (en) | 2019-10-23 | 2019-10-23 | double-liquid wall post-grouting equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110552721A true CN110552721A (en) | 2019-12-10 |
Family
ID=68743306
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911010221.6A Pending CN110552721A (en) | 2019-10-23 | 2019-10-23 | double-liquid wall post-grouting equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110552721A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113733359A (en) * | 2021-08-05 | 2021-12-03 | 三川德青工程机械有限公司 | Combined module type double-liquid pulping system and method |
| CN114060047A (en) * | 2021-11-30 | 2022-02-18 | 中交隧道工程局有限公司 | Slurry mixing method for synchronous double-liquid grouting of shield tunnel |
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| CN202832567U (en) * | 2012-09-14 | 2013-03-27 | 广东华隧建设股份有限公司 | Single or double grout injection system of shield tunneling machine |
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| CN114060047A (en) * | 2021-11-30 | 2022-02-18 | 中交隧道工程局有限公司 | Slurry mixing method for synchronous double-liquid grouting of shield tunnel |
| CN114060047B (en) * | 2021-11-30 | 2022-07-12 | 中交隧道工程局有限公司 | Slurry mixing method for synchronous double-liquid grouting of shield tunnel |
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