WO2023236250A1 - Shield synchronous double-liquid grouting process - Google Patents

Shield synchronous double-liquid grouting process Download PDF

Info

Publication number
WO2023236250A1
WO2023236250A1 PCT/CN2022/100358 CN2022100358W WO2023236250A1 WO 2023236250 A1 WO2023236250 A1 WO 2023236250A1 CN 2022100358 W CN2022100358 W CN 2022100358W WO 2023236250 A1 WO2023236250 A1 WO 2023236250A1
Authority
WO
WIPO (PCT)
Prior art keywords
liquid
grouting
mixing
tank
pipe
Prior art date
Application number
PCT/CN2022/100358
Other languages
French (fr)
Chinese (zh)
Inventor
王清平
张岩涛
陈馈
Original Assignee
福建中天交通工程技术服务有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 福建中天交通工程技术服务有限公司 filed Critical 福建中天交通工程技术服务有限公司
Publication of WO2023236250A1 publication Critical patent/WO2023236250A1/en

Links

Images

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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
    • B28C5/02—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions without using driven mechanical means effecting the mixing
    • B28C5/04—Gravitational mixing; Mixing by intermingling streams of ingredients
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
    • B28C7/04—Supplying or proportioning the ingredients
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/91—Use of waste materials as fillers for mortars or concrete

Definitions

  • the invention relates to the technical field of shield construction, and in particular to a synchronous double-liquid grouting process for shields.
  • grouting behind the wall is an important process to fill the gaps at the shield tail, prevent surface settlement, and stabilize the lining segments.
  • hard slurry and inert slurry are mostly used for grouting filling.
  • the slurry takes a long time to solidify. After being injected into the gap at the shield tail, the slurry remains in a liquid flow state for a long time.
  • the buoyancy force generated acts on the segment, causing the segment to float upward and displace. It is beneficial to the stability of the segment, and during the construction of shield tunnels, single-liquid grouting is commonly used, which has poor coagulation effect.
  • the purpose of the present invention is to address the above shortcomings and provide a simultaneous double-liquid grouting process for shields that uses two slurries to mix and grout, which can achieve rapid condensation and good condensation effects.
  • a shield synchronous double-liquid grouting process which includes the following steps:
  • step (1) the ratio of bentonite, carrageenan, glucose powder, silica fume powder, diatomite and water is 350:0.5:2:0.3:1.2 :865.
  • the concentration of the water glass is 30 to 40 degrees Baume, and the mass ratio of water to water glass is 2:1 to 1: 1 Prepare solution B.
  • step (4) the A liquid and B liquid are mixed at a volume ratio of 25 to 30:1.
  • the mixing device in order to quickly mix liquid A and liquid B and prevent the feed pipe from being blocked; in step (4), the mixing device includes a material tank and an extrusion mechanism located above the material tank for squeezing the material downwards. And a mixing mechanism located below the material tank for fully mixing liquid A and liquid B.
  • the material tank is connected with two feed pipes for injecting liquid A and liquid B respectively.
  • the feed pipe is connected with A flushing pipe, the angle between the flushing pipe and the feed pipe is 30 degrees, the flushing pipe is provided with a flushing valve, and the feeding pipe is also provided with a switch valve located outside the flushing pipe.
  • the material tank is provided with a first feed port and a second feed port for installing two feed pipes.
  • the material port and the second feed port are arranged oppositely, and a telescopic component for blocking the first feed port and the second feed port is provided in the material tank.
  • the telescopic component includes a fixed rod, a movable rod located on the fixed The telescopic rods at both ends of the rod and the rubber plugs provided at the ends of the telescopic rods for blocking the first feed port or the second feed port.
  • the rubber plugs are conical and are sleeved on the telescopic rods.
  • a bracket for fixing and installing the fixing rod is provided in the material tank.
  • the material is driven to move toward the mixing mechanism;
  • the top of the material tank is provided with an opening
  • the extrusion mechanism includes an elastic rubber cover that is detachably installed on the opening and is used to drive the elastic rubber cover downward.
  • An extrusion cylinder for deforming and extruding materials.
  • the extrusion cylinder is installed on the frame.
  • the cylinder rod of the extrusion cylinder is connected to the elastic rubber cover to drive the elastic rubber cover to deform downward.
  • the mixing mechanism includes a mixing tank and a mixing tank located in the mixing tank for mixing liquid A and liquid B.
  • the upper end of the mixing tank is provided with an inlet for connecting to the material tank, and the lower end of the mixing tank is provided with an outlet for connecting to the grouting pipe.
  • the mixing assembly includes a fixed shaft, an eccentric guide tube and an electromagnetic group for driving the eccentric guide tube to shift left and right.
  • the electromagnetic group includes two blocks located respectively on the mixing Electromagnets on the left and right sides of the tank, the fixed shaft is fixedly installed in the mixing tank, the two electromagnets are located on both radial sides of the fixed shaft, the eccentric guide tube is movablely sleeved on the fixed shaft, and the The inner diameter of the eccentric guide tube is larger than the outer diameter of the fixed shaft, so that when the electromagnets on both sides alternately generate magnetic fields, the eccentric guide tube can be driven left and right to deflect and rotate relative to the fixed axis to achieve dynamic mixing of liquid A and liquid B.
  • the grouting pipeline includes a grouting pipe and a semicircular grouting ring, and the inside of the semicircular grouting ring is provided with a grout for containing the grout.
  • a semi-annular expansion chamber one end of the grouting tube is connected to the mixing device, the other end of the grouting tube is connected to the semi-annular expansion chamber, a semi-annular rubber lip is provided on the outside of the semi-circular grouting ring, and the The semi-annular rubber lip includes an elastic upper lip and an elastic lower lip.
  • a semi-annular gap is formed between the elastic upper lip and the elastic lower lip so that when the pressure of the semi-annular expansion chamber increases, the slurry is simultaneously extruded from the semi-annular gap and filled into the formation and pipe segments. the gap between.
  • the present invention has the following advantages:
  • the simultaneous double-liquid grouting process used in the present invention is suitable for both segment wall rear grouting and shield grouting.
  • Shield grouting is injected through the shield grouting hole, first in the tunnel. Prepare liquid A and liquid B respectively, and then transport liquid A and liquid B to the outside of the shield machine shell for rapid mixing to ensure that the mixed slurry can be filled into the gap between the ground and the shield machine shell at the shortest speed. , thereby effectively preventing the mixed slurry from condensing and clogging the pipeline before filling, and the double-liquid grouting has good coagulation effect and fast coagulation speed;
  • the present invention preliminarily mixes liquid A and liquid B by setting up a material tank.
  • Liquid A and liquid B are respectively injected into the material tank through two feeding pipes.
  • the flushing pipe provided on the feeding pipe can timely control the feed.
  • the pipe is flushed to effectively prevent the feed pipe from being blocked.
  • an elastic rubber cover is set on the top of the material tank, and the elastic rubber cover is squeezed downward by the extrusion cylinder. The elastic rubber cover is deformed, thereby squeezing the material to move downward, thereby completing the purpose of pushing the material;
  • the present invention adopts a mixing mechanism installed below the material tank, and the materials in the material tank are pushed downwards, and secondary mixing is performed in the mixing tank.
  • the eccentric guide tube is cylindrical, and the movable sleeve is set on the fixed shaft to mix the The tank is divided into two channels, the left and right. Because the inner diameter of the eccentric guide tube is much larger than the outer diameter of the fixed shaft, the eccentric guide tube can be offset left and right relative to the fixed shaft.
  • the present invention can also control its left and right offset through a magnetic field, thereby adjusting the flow and pressure of the channels on both sides.
  • the eccentric guide tube can be rotated and installed, when the pressure on both sides of the eccentric guide tube is different, viscosity will occur. If different, the eccentric guide tube will be driven to rotate during this process, thereby reducing the resistance to the fluid and utilizing the wall-covering effect of the fluid to cause part of the fluid to counteract in the opposite direction, thus greatly improving the mixing effect;
  • the grouting pipeline of the present invention can realize simultaneous discharging and synchronous grouting.
  • the semi-annular gap is composed of an elastic upper lip and an elastic lower lip. They will be closed together under static conditions. Only when the pressure in the annular expansion chamber exceeds The semi-annular gap will open only when the threshold reaches the threshold.
  • the mixed slurry from the mixing device is transported to the grouting pipe through the grouting pump and collected in the annular expansion cavity of the semicircular grouting ring. When the mixed slurry continuously flows into the annular In the expansion chamber, the pressure in the annular expansion chamber will increase.
  • the mixed slurry When the annular expansion chamber cannot carry the mixed slurry, the mixed slurry will squeeze out the semi-annular gap, and at the same time, it will be squeezed out from the semi-annular gap and filled into the gap between the formation and the pipe segment. Thus achieving synchronous discharging.
  • Figure 1 is a schematic structural diagram of the mixing device
  • Figure 2 is a structural cross-sectional view of the mixing device
  • Figure 3 is a perspective cross-sectional view of the mixing device
  • Figure 4 is a schematic structural diagram of the grouting pipeline
  • Figure 5 is a structural cross-sectional view of the grouting pipeline.
  • material tank 1 material tank 1; first feed port 101; second feed port 102; feed pipe 2; flushing pipe 3; fixed rod 4; telescopic rod 5; rubber plug 6; bracket 7; elastic rubber cover 8 ; Extrusion cylinder 9; Mixing tank 10; Fixed shaft 11; Eccentric guide tube 12; Electromagnet 13; Grouting pipe 14; Semi-circular grouting ring 15; Semi-annular expansion chamber 16; Elastic upper lip 17; Elastic lower lip 18; semi-annular gap 19; return spring 20.
  • This embodiment provides a synchronous dual-liquid grouting process for shields, which includes the following steps:
  • step (1) in order to achieve better filling effect; in step (1), the ratio of bentonite, carrageenan, glucose powder, silica fume powder, diatomaceous earth and water is 350:0.5:2: 0.3:1.2:865.
  • the concentration of the water glass is 30 to 40 degrees Baume, and the mass ratio of water to water glass is 2:1 ⁇ 1:1 Prepare solution B.
  • step (4) in order to ensure the filling effect of cement slurry and the condensation effect of glass water; in step (4), the A liquid and B liquid are mixed at a volume ratio of 25 to 30:1.
  • the mixing device in order to quickly mix liquid A and liquid B and prevent the feed pipe 2 from being blocked; in step (4), the mixing device includes a material tank 1, a There is an extrusion mechanism above the tank 1 for squeezing the material downwards and a mixing mechanism below the tank 1 for fully mixing liquid A and liquid B.
  • the material tank 1 is connected to two rods for injecting liquid A respectively. and the feed pipe 2 of liquid B.
  • the feed pipe 2 is connected with a flushing pipe 3.
  • the angle between the flushing pipe 3 and the feeding pipe 2 is 30 degrees, thereby ensuring that the water in the impact pipe can be discharged at a relatively high speed.
  • the large impact force flushes the feed pipe 2 to ensure the flushing effect.
  • the flush pipe 3 is provided with a flush valve, and the feed pipe 2 is also provided with an on-off valve located outside the flush pipe 3.
  • the material tank 1 in order to open the feed port through pressure to ensure accurate feeding; the material tank 1 is provided with a first feed port 101 and a second feed port for installing two feed pipes 2 respectively. 102.
  • the first feed port 101 and the second feed port 102 are arranged oppositely, and the material tank 1 is provided with a telescopic component for blocking the first feed port 101 and the second feed port 102, so
  • the telescopic component includes a fixed rod 4, a telescopic rod 5 movable at both ends of the fixed rod 4, and a rubber plug 6 provided at the end of the telescopic rod 5 for blocking the first feed port 101 or the second feed port 102.
  • the rubber plug 6 is conical, and the telescopic rod 5 is covered with a return spring 20 for pushing the rubber plug 6 to block the first feed port 101 or the second feed port 102,
  • the material tank 1 is provided with a bracket 7 for fixing the fixing rod 4 .
  • the extrusion mechanism in order to squeeze the material, the material is driven to move toward the mixing mechanism; the top of the material tank 1 is provided with an opening, and the extrusion mechanism includes an elastic rubber cover 8 removably installed on the opening and a driving The elastic rubber cover 8 deforms downward to squeeze the extrusion cylinder 9 of the material.
  • the extrusion cylinder 9 is installed on the frame.
  • the cylinder rod of the extrusion cylinder 9 is connected to the elastic rubber cover 8 to drive the elastic rubber cover 8 to
  • the lower edge of the elastic rubber cover 8 is provided with an annular upper flange
  • the upper edge of the material tank 1 is provided with an annular lower flange.
  • the annular upper flange is connected to the annular lower flange through bolts and nuts, thereby elastically
  • the rubber cover 8 is detachably installed on the material tank 1.
  • the mixing mechanism in order to uniformly mix liquid A and liquid B without affecting the normal feeding of materials to achieve dynamic mixing; the mixing mechanism includes a mixing tank 10 and a liquid disposed in the mixing tank 10 for mixing liquid A.
  • the upper end of the mixing tank 10 is provided with an inlet for connecting to the material tank 1, and the lower end of the mixing tank 10 is provided with an outlet for connecting to the grouting pipe.
  • the mixing assembly in order to uniformly mix liquid A and liquid B; the mixing assembly includes a fixed shaft 11, an eccentric guide tube 12 and an electromagnetic group for driving the eccentric guide tube 12 to shift left and right.
  • the electromagnetic group It includes two electromagnets 13 respectively located on the left and right sides of the mixing tank 10.
  • the fixed shaft 11 is fixedly installed in the mixing tank 10.
  • the two electromagnets 13 are located on both radial sides of the fixed shaft 11.
  • the eccentric flow guide The cylinder 12 is movably sleeved on the fixed shaft 11, and the inner diameter of the eccentric guide cylinder 12 is larger than the outer diameter of the fixed shaft 11, so that when the electromagnets 13 on both sides alternately generate magnetic fields, the eccentric guide cylinder 12 is driven relative to the fixed shaft 11
  • the left and right deflection and rotation realize the dynamic mixing of liquid A and liquid B.
  • the electromagnet 13 on the left generates a magnetic field
  • the electromagnet 13 on the right does not generate a magnetic field.
  • the electromagnet 13 on the right when the electromagnet 13 on the right generates a magnetic field, the electromagnet 13 on the left side does not generate a magnetic field
  • the eccentric guide tube 12 here can be made of non-magnetic plastic, rubber or resin.
  • the grouting pipeline in order to ensure synchronous grouting of grout; in step (5), the grouting pipeline includes a grouting pipe 14 and a semicircular grouting ring 15.
  • the inside of the semicircular grouting ring 15 is provided with a semi-annular expansion chamber 16 for accommodating slurry.
  • One end of the grouting pipe 14 is connected to the mixing device, and the other end of the grouting pipe 14 is connected to the semi-annular expansion chamber 16.
  • a semi-annular rubber lip is provided on the outside of the semi-circular grouting ring 15.
  • the semi-annular rubber lip includes an elastic upper lip 17 and an elastic lower lip 18.
  • a semi-annular gap is formed between the elastic upper lip 17 and the elastic lower lip 18. 19 so that when the pressure of the semi-annular expansion chamber 16 increases, the slurry is simultaneously extruded from the semi-annular gap 19 and filled into the gap between the formation and the segment.
  • the simultaneous double-liquid grouting process used in the present invention is suitable for both segment wall rear grouting and shield grouting.
  • Shield grouting is injected through the shield grouting hole.
  • A is first configured outside the pit. liquid and B liquid, and then transport liquid A and liquid B to the pit for mixing to ensure that the mixed slurry can be filled into the gap between the formation and the segment at the shortest speed, thus effectively preventing the mixed slurry from condensing before filling. It can block the pipes, and the double-liquid grouting has good condensation effect and fast condensation speed.
  • the present invention preliminarily mixes liquid A and liquid B by setting up a material tank.
  • Liquid A and liquid B are respectively injected into the material tank through two feeding pipes 2.
  • the flushing pipe 3 provided on the feeding pipe 2 can timely control the feeding.
  • the pipe is flushed to effectively prevent the feed pipe 2 from being blocked.
  • the flush valve is opened and the switch valve is closed to effectively prevent contamination.
  • an elastic rubber cover 8 is set on the top of the material tank 1, and the extrusion cylinder 9 is used to squeeze downwards.
  • the elastic rubber cover 8 deforms the elastic rubber cover 8, and then squeezes the material to move downward, thereby completing the purpose of pushing the material.
  • a mixing mechanism is provided below the material tank 1.
  • the materials in the material tank 1 are pushed downward and mixed twice in the mixing tank 10.
  • the eccentric guide tube 12 is cylindrical, and the movable sleeve is set on the fixed shaft 11.
  • the mixing tank 10 is divided into two left and right channels. Since the inner diameter of the eccentric guide tube 12 is much larger than the outer diameter of the fixed shaft 11, the eccentric guide tube 12 can be offset left and right relative to the fixed shaft 11.
  • Electromagnetic devices are provided on both sides of the mixing tank 10. Iron 13, when the two electromagnets 13 alternately generate a magnetic field at high speed, it will drive the eccentric guide tube 12 to continuously swing left and right.
  • the repeated left and right swings of the eccentric guide tube 12 will form a complex turbulent flow effect, thereby increasing the amount of liquid A and liquid B.
  • the mixing effect is very good, because the mixing process of liquid A and liquid B is a dynamic mixing completed in the flow, the momentum loss is small, no special mixing device and container are needed, and the space occupied is small.
  • the present invention can also control its left and right offset through a magnetic field, thereby adjusting the flow and pressure of the channels on both sides.
  • the eccentric guide tube 12 can be rotated and installed, when the pressure on both sides of the eccentric guide tube 12 is different, the viscosity will be different. , it will drive the eccentric guide tube 12 to rotate during this process, thereby not only reducing the resistance to the fluid, but also utilizing the wall covering effect of the fluid to make part of the fluid reversely hedge, thereby greatly improving the mixing effect.
  • the grouting pipeline of the present invention can realize simultaneous discharging and synchronous grouting.
  • the semi-annular gap 19 is composed of an elastic upper lip 17 and an elastic lower lip 18. They will be closed together in a static state. Only when the pressure in the annular expansion chamber exceeds The threshold semi-annular gap 19 will open.
  • the mixed slurry of the mixing device is transported to the grouting pipe 14 through the grouting pump, and is collected in the annular expansion cavity of the semicircular grouting ring 15.
  • the source of the mixed slurry Continuously flowing into the annular expansion chamber will cause the pressure of the annular expansion chamber to increase.
  • the mixed slurry When the annular expansion chamber cannot carry the mixed slurry, the mixed slurry will squeeze out the semi-annular gap 19, and at the same time, it will be squeezed out from the semi-annular gap 19 and filled into the formation and pipe segments. within the gap between them, thereby achieving synchronous discharging.

Landscapes

  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Architecture (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Civil Engineering (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)

Abstract

The present invention relates to a shield synchronous double-liquid grouting process. The shield synchronous double-liquid grouting process comprises the following steps of: (1) putting bentonite, carrageenan, glucose powder, silica fume powder, diatomite and water into a liquid storage tank stirrer for stirring and mixing to prepare a liquid A; (2) injecting the liquid A into a trolley rotary stirring tank by means of a pressure injection pump for secondary stirring; (3) injecting water and sodium silicate into a rear trolley liquid storage tank for stirring and mixing to prepare a liquid B; (4) injecting the liquid A in the trolley rotary stirring tank and the liquid B in the rear trolley liquid storage tank into a mixing device by means of an injection pump to prepare mixed slurry; and (5) injecting the mixed slurry in the mixing device into a grouting pipeline, and filling a gap between a stratum and a duct piece through a grouting opening of the grouting pipeline. According to the synchronous double-liquid grouting process used by the present invention, the liquid A and the liquid B are respectively prepared outside a pit, and then the liquid A and the liquid B are respectively conveyed into the pit for mixing, so that the mixed slurry can be filled into the gap between the stratum and the duct piece at the highest speed.

Description

一种盾构同步双液注浆工艺A kind of simultaneous double-liquid grouting technology for shield tunneling 技术领域Technical field
本发明涉及盾构施工技术领域，具体涉及一种盾构同步双液注浆工艺。The invention relates to the technical field of shield construction, and in particular to a synchronous double-liquid grouting process for shields.
背景技术Background technique
在盾构隧道施工过程中，壁后注浆是填充盾尾空隙、防止地表沉降、稳定衬砌管片的重要工序。目前多使用硬性浆、惰性浆进行注浆充填，浆液的凝结时间长，注入盾尾空隙后，浆液呈液态流动状态的持续时间长，产生的浮力作用在管片上使得管片发生上浮位移，不利于管片的稳定，并且，在盾构隧道施工过程中，普遍采用单液注浆，凝结效果差。During the construction of shield tunnels, grouting behind the wall is an important process to fill the gaps at the shield tail, prevent surface settlement, and stabilize the lining segments. At present, hard slurry and inert slurry are mostly used for grouting filling. The slurry takes a long time to solidify. After being injected into the gap at the shield tail, the slurry remains in a liquid flow state for a long time. The buoyancy force generated acts on the segment, causing the segment to float upward and displace. It is beneficial to the stability of the segment, and during the construction of shield tunnels, single-liquid grouting is commonly used, which has poor coagulation effect.
发明内容Contents of the invention
本发明的目的是针对以上不足之处，提供了一种采用两种浆液混合注浆，可实现快速凝结，凝结效果好的盾构同步双液注浆工艺。The purpose of the present invention is to address the above shortcomings and provide a simultaneous double-liquid grouting process for shields that uses two slurries to mix and grout, which can achieve rapid condensation and good condensation effects.
本发明解决技术问题所采用的方案是：一种盾构同步双液注浆工艺，包括以下步骤：The solution adopted by the present invention to solve the technical problem is: a shield synchronous double-liquid grouting process, which includes the following steps:
(1)将膨润土、卡拉胶、葡萄糖粉、硅灰粉、硅藻土以及水放入贮液罐搅拌器内搅拌混合，配置成A液；(1) Put bentonite, carrageenan, glucose powder, silica fume powder, diatomaceous earth and water into the liquid storage tank stirrer, stir and mix, and prepare liquid A;
(2)通过压送注入泵将A液注入台车旋转搅拌罐内进行二次搅拌；(2) Inject liquid A into the rotating mixing tank of the trolley through a pressure injection pump for secondary mixing;
(3)将水和水玻璃注入后方台车贮液槽内进行搅拌混合，配置成B液；(3) Inject water and water glass into the liquid storage tank of the rear trolley, stir and mix, and prepare liquid B;
(4)将台车旋转搅拌罐内的A液和后方台车贮液槽内的B液通过注入泵注入混合装置内，制成混合浆液；(4) Inject liquid A in the rotating mixing tank of the trolley and liquid B in the liquid storage tank of the rear trolley into the mixing device through the injection pump to make a mixed slurry;
(5)将混合装置内的混合浆液注入注浆管道内，由注浆管道的注浆口充填至地层和管片之间的空隙。(5) Inject the mixed slurry in the mixing device into the grouting pipe, and fill it from the grouting port of the grouting pipe to the gap between the formation and the segment.
进一步的，为了实现较好的充填效果；在步骤(1)中，所述膨润土、卡拉胶、葡萄糖粉、硅灰粉、硅藻土以及水的配比为350：0.5：2：0.3：1.2：865。Further, in order to achieve better filling effect; in step (1), the ratio of bentonite, carrageenan, glucose powder, silica fume powder, diatomite and water is 350:0.5:2:0.3:1.2 :865.
进一步的，为了缩短水泥浆的凝结时间，实现快速凝结；在步骤(3)中，所述水玻璃的浓度为30～40波美度，水与水玻璃按质量比为2:1～1:1制备B液。Further, in order to shorten the setting time of the cement slurry and achieve rapid setting; in step (3), the concentration of the water glass is 30 to 40 degrees Baume, and the mass ratio of water to water glass is 2:1 to 1: 1 Prepare solution B.
进一步的，为了保证水泥浆的充填效果和玻璃水的凝结效果；在步骤(4) 中，所述A液和B液按25～30：1的体积比进行混合。Further, in order to ensure the filling effect of cement slurry and the condensation effect of glass water; in step (4), the A liquid and B liquid are mixed at a volume ratio of 25 to 30:1.
进一步的，为了将A液和B液快速混合，并防止进料管堵塞；在步骤(4)中，所述混合装置包括物料罐、位于物料罐上方用于向下挤压物料的挤压机构以及位于物料罐下方用于将A液和B液充分混合的混合机构，所述物料罐上连接有两根分别用于注入A液和B液的进料管，所述进料管上连接有冲洗管，所述冲洗管与进料管之间的夹角为30度，所述冲洗管上设有冲洗阀，所述进料管上还设有位于冲洗管外侧的开关阀。Further, in order to quickly mix liquid A and liquid B and prevent the feed pipe from being blocked; in step (4), the mixing device includes a material tank and an extrusion mechanism located above the material tank for squeezing the material downwards. And a mixing mechanism located below the material tank for fully mixing liquid A and liquid B. The material tank is connected with two feed pipes for injecting liquid A and liquid B respectively. The feed pipe is connected with A flushing pipe, the angle between the flushing pipe and the feed pipe is 30 degrees, the flushing pipe is provided with a flushing valve, and the feeding pipe is also provided with a switch valve located outside the flushing pipe.
进一步的，为了通过压力打开进料口，从而保证精准进料；所述物料罐上分别设有用于安装两根进料管的第一进料口和第二进料口，所述第一进料口和第二进料口相对设置，所述物料罐内设有用于封堵第一进料口和第二进料口的可伸缩组件，所述可伸缩组件包括固定杆、活动设于固定杆两端的伸缩杆以及设于伸缩杆端部用于封堵第一进料口或第二进料口的橡胶堵头，所述橡胶堵头呈圆锥状，所述伸缩杆上套设在用于推顶橡胶堵头封堵在第一进料口或第二进料口上的复位弹簧，所述物料罐内设有用于固定安装固定杆的支架。Further, in order to open the feed port through pressure to ensure accurate feeding; the material tank is provided with a first feed port and a second feed port for installing two feed pipes. The material port and the second feed port are arranged oppositely, and a telescopic component for blocking the first feed port and the second feed port is provided in the material tank. The telescopic component includes a fixed rod, a movable rod located on the fixed The telescopic rods at both ends of the rod and the rubber plugs provided at the ends of the telescopic rods for blocking the first feed port or the second feed port. The rubber plugs are conical and are sleeved on the telescopic rods. In order to push up the rubber plug and seal the return spring on the first feed port or the second feed port, a bracket for fixing and installing the fixing rod is provided in the material tank.
进一步的，为了挤压物料，驱动物料向混合机构运动；所述物料罐的顶部设有开口，所述挤压机构包括可拆卸安装在开口上的弹性橡胶盖和用于驱动弹性橡胶盖向下变形挤压物料的挤压气缸，所述挤压气缸安装在机架上，所述挤压气缸的气缸杆与弹性橡胶盖连接以驱动弹性橡胶盖向下变形。Further, in order to squeeze the material, the material is driven to move toward the mixing mechanism; the top of the material tank is provided with an opening, and the extrusion mechanism includes an elastic rubber cover that is detachably installed on the opening and is used to drive the elastic rubber cover downward. An extrusion cylinder for deforming and extruding materials. The extrusion cylinder is installed on the frame. The cylinder rod of the extrusion cylinder is connected to the elastic rubber cover to drive the elastic rubber cover to deform downward.
进一步的，为了在不影响物料正常进料的同时，将A液和B液混合均匀，实现动态混合；所述混合机构包括混合罐和设于混合罐内用于混合A液和B液的混合组件，所述混合罐的上端设有用于与物料罐连接的进料口，所述混合罐的下端设有用于与注浆管道连接的出料口。Further, in order to mix liquid A and liquid B uniformly without affecting the normal feeding of materials to achieve dynamic mixing; the mixing mechanism includes a mixing tank and a mixing tank located in the mixing tank for mixing liquid A and liquid B. The upper end of the mixing tank is provided with an inlet for connecting to the material tank, and the lower end of the mixing tank is provided with an outlet for connecting to the grouting pipe.
进一步的，为了将A液和B液均匀混合；所述混合组件包括固定轴、偏心导流筒和用于驱动偏心导流筒左右偏移的电磁组，所述电磁组包括两块分别位于混合罐左右两侧的电磁铁，所述固定轴固定安装在混合罐内，两块电磁铁分别位于固定轴的径向两侧，所述偏心导流筒活动套设在固定轴上，且所述偏心导流筒的内径大于固定轴的外径，以便两侧的电磁铁交替产生磁场时驱动偏心导流筒相对固定轴左右偏移和转动实现对A液和B液的动态混合。Further, in order to uniformly mix liquid A and liquid B; the mixing assembly includes a fixed shaft, an eccentric guide tube and an electromagnetic group for driving the eccentric guide tube to shift left and right. The electromagnetic group includes two blocks located respectively on the mixing Electromagnets on the left and right sides of the tank, the fixed shaft is fixedly installed in the mixing tank, the two electromagnets are located on both radial sides of the fixed shaft, the eccentric guide tube is movablely sleeved on the fixed shaft, and the The inner diameter of the eccentric guide tube is larger than the outer diameter of the fixed shaft, so that when the electromagnets on both sides alternately generate magnetic fields, the eccentric guide tube can be driven left and right to deflect and rotate relative to the fixed axis to achieve dynamic mixing of liquid A and liquid B.
进一步的，为了保证浆液的同步注浆；在步骤(5)中，所述注浆管道包括 注浆管和半圆形注浆环，所述半圆形注浆环的内侧设有用于容纳浆液的半环形扩容腔，所述注浆管的一端与混合装置连接，注浆管的另一端与半环形扩容腔连接，所述半圆形注浆环的外侧设有半环形橡胶唇，所述半环形橡胶唇包括弹性上唇和弹性下唇，所述弹性上唇和弹性下唇之间形成有半环形缝隙以便半环形扩容腔压力增大时浆液由半环形缝隙同时挤出充填至地层和管片之间的空隙。Further, in order to ensure the synchronous grouting of grout; in step (5), the grouting pipeline includes a grouting pipe and a semicircular grouting ring, and the inside of the semicircular grouting ring is provided with a grout for containing the grout. A semi-annular expansion chamber, one end of the grouting tube is connected to the mixing device, the other end of the grouting tube is connected to the semi-annular expansion chamber, a semi-annular rubber lip is provided on the outside of the semi-circular grouting ring, and the The semi-annular rubber lip includes an elastic upper lip and an elastic lower lip. A semi-annular gap is formed between the elastic upper lip and the elastic lower lip so that when the pressure of the semi-annular expansion chamber increases, the slurry is simultaneously extruded from the semi-annular gap and filled into the formation and pipe segments. the gap between.
较之现有技术而言，本发明具有以下优点：Compared with the prior art, the present invention has the following advantages:
(1)本发明所采用的同步双液注浆工艺，既适用于管片壁后注浆，也适用于盾体注浆，盾体注浆就是通过盾体注浆孔注入，先在隧道内分别配置A液和B液，再分别将A液和B液输送至盾构机壳体外侧进行快速混合，保证混合浆液能以最短的速度填充到地层和盾构机壳体之间的间隙内，从而有效防止混合浆液在充填前发生凝结，堵塞管道，并且，双液注浆凝结效果好，凝结速度快；(1) The simultaneous double-liquid grouting process used in the present invention is suitable for both segment wall rear grouting and shield grouting. Shield grouting is injected through the shield grouting hole, first in the tunnel. Prepare liquid A and liquid B respectively, and then transport liquid A and liquid B to the outside of the shield machine shell for rapid mixing to ensure that the mixed slurry can be filled into the gap between the ground and the shield machine shell at the shortest speed. , thereby effectively preventing the mixed slurry from condensing and clogging the pipeline before filling, and the double-liquid grouting has good coagulation effect and fast coagulation speed;
(2)本发明通过设置物料罐，对A液和B液初步进行混合，A液和B液分别通过两根进料管分别注入物料罐，进料管上设置的冲洗管可及时对进料管进行冲洗，有效防止进料管堵塞，清洗时，通过打开冲洗阀，关闭开关阀，有效防止污染，并且，物料罐的顶部设置弹性橡胶盖，通过挤压气缸向下挤压弹性橡胶盖，使弹性橡胶盖发生变形，进而挤压物料向下移动，从而完成推进物料的目的；(2) The present invention preliminarily mixes liquid A and liquid B by setting up a material tank. Liquid A and liquid B are respectively injected into the material tank through two feeding pipes. The flushing pipe provided on the feeding pipe can timely control the feed. The pipe is flushed to effectively prevent the feed pipe from being blocked. During cleaning, open the flush valve and close the switch valve to effectively prevent contamination. Moreover, an elastic rubber cover is set on the top of the material tank, and the elastic rubber cover is squeezed downward by the extrusion cylinder. The elastic rubber cover is deformed, thereby squeezing the material to move downward, thereby completing the purpose of pushing the material;
(3)本发明采用在物料罐下方设置混合机构，物料罐内的物料被向下推进，在混合罐进行二次混合，偏心导流筒为圆柱形，活动套设在固定轴上，将混合罐分隔成左右两个通道，因偏心导流筒的内径远大于固定轴的外径，偏心导流筒可相对固定轴左右偏移，混合罐两侧设有电磁铁，当两个电磁铁高速交替产生磁场，就会带动偏心导流筒不断左右偏摆，偏心导流筒反复左右摆动会形成复杂的紊流效果，从而增加A液和B液的混合效果，因A液和B液的混合过程是在流动中完成的动态混合，其动量损失小，且无需专门的拌料装置和容器，所占空间小；(3) The present invention adopts a mixing mechanism installed below the material tank, and the materials in the material tank are pushed downwards, and secondary mixing is performed in the mixing tank. The eccentric guide tube is cylindrical, and the movable sleeve is set on the fixed shaft to mix the The tank is divided into two channels, the left and right. Because the inner diameter of the eccentric guide tube is much larger than the outer diameter of the fixed shaft, the eccentric guide tube can be offset left and right relative to the fixed shaft. There are electromagnets on both sides of the mixing tank. When the two electromagnets are at high speed, The alternating generation of magnetic fields will drive the eccentric guide tube to continuously swing left and right. Repeated swings of the eccentric guide tube will form a complex turbulent flow effect, thereby increasing the mixing effect of liquid A and liquid B. Due to the mixing of liquid A and liquid B, The process is dynamic mixing completed in flow, with small momentum loss, no need for special mixing devices and containers, and small space occupied;
(4)本发明还可以通过磁场控制其左右偏移的量，从而调节两侧通道的流量和压强，同时因偏心导流筒可转动安装，当偏心导流筒两侧压强不同造成粘滞性不同，就会带动偏心导流筒在这一过程中发生旋转，从而实现既能减少对 流体的阻力，又能利用流体的覆壁效应使一部分流体反向对冲，从而大大提高混合效果；(4) The present invention can also control its left and right offset through a magnetic field, thereby adjusting the flow and pressure of the channels on both sides. At the same time, because the eccentric guide tube can be rotated and installed, when the pressure on both sides of the eccentric guide tube is different, viscosity will occur. If different, the eccentric guide tube will be driven to rotate during this process, thereby reducing the resistance to the fluid and utilizing the wall-covering effect of the fluid to cause part of the fluid to counteract in the opposite direction, thus greatly improving the mixing effect;
(5)本发明注浆管道可实现同时出料同步注浆，具体的，半环形缝隙由弹性上唇和弹性下唇组成，在静力状态下会闭合在一起，只有当环形扩容腔内压力超过阈值半环形缝隙才会张开，注浆时，混合装置的混合浆液通过注浆泵输送至注浆管内，汇集在半圆形注浆环的环形扩容腔内，当混合浆液源源不断汇入环形扩容腔内，会导致环形扩容腔压力增加，当环形扩容腔无法承载混合浆液时，混合浆液会挤开半环形缝隙，同时由半环形缝隙挤出充填到地层和管片之间的间隙内，从而实现同步出料。(5) The grouting pipeline of the present invention can realize simultaneous discharging and synchronous grouting. Specifically, the semi-annular gap is composed of an elastic upper lip and an elastic lower lip. They will be closed together under static conditions. Only when the pressure in the annular expansion chamber exceeds The semi-annular gap will open only when the threshold reaches the threshold. During grouting, the mixed slurry from the mixing device is transported to the grouting pipe through the grouting pump and collected in the annular expansion cavity of the semicircular grouting ring. When the mixed slurry continuously flows into the annular In the expansion chamber, the pressure in the annular expansion chamber will increase. When the annular expansion chamber cannot carry the mixed slurry, the mixed slurry will squeeze out the semi-annular gap, and at the same time, it will be squeezed out from the semi-annular gap and filled into the gap between the formation and the pipe segment. Thus achieving synchronous discharging.
附图说明Description of the drawings
下面参照附图结合实施例对本发明作进一步说明：The present invention will be further described below with reference to the accompanying drawings and examples:
图1是混合装置的结构示意图；Figure 1 is a schematic structural diagram of the mixing device;
图2是混合装置的结构剖视图；Figure 2 is a structural cross-sectional view of the mixing device;
图3是混合装置的立体剖视图；Figure 3 is a perspective cross-sectional view of the mixing device;
图4是注浆管道的结构示意图；Figure 4 is a schematic structural diagram of the grouting pipeline;
图5是注浆管道的结构剖视图。Figure 5 is a structural cross-sectional view of the grouting pipeline.
图中：物料罐1；第一进料口101；第二进料口102；进料管2；冲洗管3；固定杆4；伸缩杆5；橡胶堵头6；支架7；弹性橡胶盖8；挤压气缸9；混合罐10；固定轴11；偏心导流筒12；电磁铁13；注浆管14；半圆形注浆环15；半环形扩容腔16；弹性上唇17；弹性下唇18；半环形缝隙19；复位弹簧20。In the picture: material tank 1; first feed port 101; second feed port 102; feed pipe 2; flushing pipe 3; fixed rod 4; telescopic rod 5; rubber plug 6; bracket 7; elastic rubber cover 8 ; Extrusion cylinder 9; Mixing tank 10; Fixed shaft 11; Eccentric guide tube 12; Electromagnet 13; Grouting pipe 14; Semi-circular grouting ring 15; Semi-annular expansion chamber 16; Elastic upper lip 17; Elastic lower lip 18; semi-annular gap 19; return spring 20.
具体实施方式Detailed ways
下面结合说明书附图和具体实施例对本发明内容进行详细说明：The content of the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments of the description:
具体实施例：本实施例提供一种盾构同步双液注浆工艺，包括以下步骤：Specific embodiment: This embodiment provides a synchronous dual-liquid grouting process for shields, which includes the following steps:
(1)将膨润土、卡拉胶、葡萄糖粉、硅灰粉、硅藻土以及水放入贮液罐搅拌器内搅拌混合，配置成A液；(1) Put bentonite, carrageenan, glucose powder, silica fume powder, diatomaceous earth and water into the liquid storage tank stirrer, stir and mix, and prepare liquid A;
(2)通过压送注入泵将A液注入台车旋转搅拌罐内进行二次搅拌；(2) Inject liquid A into the rotating mixing tank of the trolley through a pressure injection pump for secondary mixing;
(3)将水和水玻璃注入后方台车贮液槽内进行搅拌混合，配置成B液；(3) Inject water and water glass into the liquid storage tank of the rear trolley, stir and mix, and prepare liquid B;
(4)将台车旋转搅拌罐内的A液和后方台车贮液槽内的B液通过注入泵注入混合装置内，制成混合浆液；(4) Inject liquid A in the rotating mixing tank of the trolley and liquid B in the liquid storage tank of the rear trolley into the mixing device through the injection pump to make a mixed slurry;
(5)将混合装置内的混合浆液注入注浆管道内，由注浆管道的注浆口充填至地层和管片之间的空隙。(5) Inject the mixed slurry in the mixing device into the grouting pipe, and fill it from the grouting port of the grouting pipe to the gap between the formation and the segment.
在本实施例中，为了实现较好的充填效果；在步骤(1)中，所述膨润土、卡拉胶、葡萄糖粉、硅灰粉、硅藻土以及水的配比为350：0.5：2：0.3：1.2：865。In this embodiment, in order to achieve better filling effect; in step (1), the ratio of bentonite, carrageenan, glucose powder, silica fume powder, diatomaceous earth and water is 350:0.5:2: 0.3:1.2:865.
在本实施例中，为了缩短水泥浆的凝结时间，实现快速凝结；在步骤(3)中，所述水玻璃的浓度为30～40波美度，水与水玻璃按质量比为2:1～1:1制备B液。In this embodiment, in order to shorten the setting time of the cement slurry and achieve rapid condensation; in step (3), the concentration of the water glass is 30 to 40 degrees Baume, and the mass ratio of water to water glass is 2:1 ~1:1 Prepare solution B.
在本实施例中，为了保证水泥浆的充填效果和玻璃水的凝结效果；在步骤(4)中，所述A液和B液按25～30：1的体积比进行混合。In this embodiment, in order to ensure the filling effect of cement slurry and the condensation effect of glass water; in step (4), the A liquid and B liquid are mixed at a volume ratio of 25 to 30:1.
在本实施例中，如图1-3所示，为了将A液和B液快速混合，并防止进料管2堵塞；在步骤(4)中，所述混合装置包括物料罐1、位于物料罐1上方用于向下挤压物料的挤压机构以及位于物料罐1下方用于将A液和B液充分混合的混合机构，所述物料罐1上连接有两根分别用于注入A液和B液的进料管2，所述进料管2上连接有冲洗管3，所述冲洗管3与进料管2之间的夹角为30度，从而保证冲击管的水能以较大的冲击力冲刷进料管2，保证冲刷效果，所述冲洗管3上设有冲洗阀，所述进料管2上还设有位于冲洗管3外侧的开关阀。In this embodiment, as shown in Figures 1-3, in order to quickly mix liquid A and liquid B and prevent the feed pipe 2 from being blocked; in step (4), the mixing device includes a material tank 1, a There is an extrusion mechanism above the tank 1 for squeezing the material downwards and a mixing mechanism below the tank 1 for fully mixing liquid A and liquid B. The material tank 1 is connected to two rods for injecting liquid A respectively. and the feed pipe 2 of liquid B. The feed pipe 2 is connected with a flushing pipe 3. The angle between the flushing pipe 3 and the feeding pipe 2 is 30 degrees, thereby ensuring that the water in the impact pipe can be discharged at a relatively high speed. The large impact force flushes the feed pipe 2 to ensure the flushing effect. The flush pipe 3 is provided with a flush valve, and the feed pipe 2 is also provided with an on-off valve located outside the flush pipe 3.
在本实施例中，为了通过压力打开进料口，从而保证精准进料；所述物料罐1上分别设有用于安装两根进料管2的第一进料口101和第二进料口102，所述第一进料口101和第二进料口102相对设置，所述物料罐1内设有用于封堵第一进料口101和第二进料口102的可伸缩组件，所述可伸缩组件包括固定杆4、活动设于固定杆4两端的伸缩杆5以及设于伸缩杆5端部用于封堵第一进料口101或第二进料口102的橡胶堵头6，所述橡胶堵头6呈圆锥状，所述伸缩杆5上套设在用于推顶橡胶堵头6封堵在第一进料口101或第二进料口102上的复位弹簧20，所述物料罐1内设有用于固定安装固定杆4的支架7。In this embodiment, in order to open the feed port through pressure to ensure accurate feeding; the material tank 1 is provided with a first feed port 101 and a second feed port for installing two feed pipes 2 respectively. 102. The first feed port 101 and the second feed port 102 are arranged oppositely, and the material tank 1 is provided with a telescopic component for blocking the first feed port 101 and the second feed port 102, so The telescopic component includes a fixed rod 4, a telescopic rod 5 movable at both ends of the fixed rod 4, and a rubber plug 6 provided at the end of the telescopic rod 5 for blocking the first feed port 101 or the second feed port 102. , the rubber plug 6 is conical, and the telescopic rod 5 is covered with a return spring 20 for pushing the rubber plug 6 to block the first feed port 101 or the second feed port 102, The material tank 1 is provided with a bracket 7 for fixing the fixing rod 4 .
在本实施例中，为了挤压物料，驱动物料向混合机构运动；所述物料罐1的顶部设有开口，所述挤压机构包括可拆卸安装在开口上的弹性橡胶盖8和用于驱动弹性橡胶盖8向下变形挤压物料的挤压气缸9，所述挤压气缸9安装在机架上，所述挤压气缸9的气缸杆与弹性橡胶盖8连接以驱动弹性橡胶盖8向下 变形，这里弹性橡胶盖8的下边缘设有环形上法兰，物料罐1的上边缘设有环形下法兰，环形上法兰通过螺栓螺母与环形下法兰连接在一起，从而将弹性橡胶盖8可拆卸安装在物料罐1上。In this embodiment, in order to squeeze the material, the material is driven to move toward the mixing mechanism; the top of the material tank 1 is provided with an opening, and the extrusion mechanism includes an elastic rubber cover 8 removably installed on the opening and a driving The elastic rubber cover 8 deforms downward to squeeze the extrusion cylinder 9 of the material. The extrusion cylinder 9 is installed on the frame. The cylinder rod of the extrusion cylinder 9 is connected to the elastic rubber cover 8 to drive the elastic rubber cover 8 to Here, the lower edge of the elastic rubber cover 8 is provided with an annular upper flange, and the upper edge of the material tank 1 is provided with an annular lower flange. The annular upper flange is connected to the annular lower flange through bolts and nuts, thereby elastically The rubber cover 8 is detachably installed on the material tank 1.
在本实施例中，为了在不影响物料正常进料的同时，将A液和B液混合均匀，实现动态混合；所述混合机构包括混合罐10和设于混合罐10内用于混合A液和B液的混合组件，所述混合罐10的上端设有用于与物料罐1连接的进料口，所述混合罐10的下端设有用于与注浆管道连接的出料口。In this embodiment, in order to uniformly mix liquid A and liquid B without affecting the normal feeding of materials to achieve dynamic mixing; the mixing mechanism includes a mixing tank 10 and a liquid disposed in the mixing tank 10 for mixing liquid A. The upper end of the mixing tank 10 is provided with an inlet for connecting to the material tank 1, and the lower end of the mixing tank 10 is provided with an outlet for connecting to the grouting pipe.
在本实施例中，为了将A液和B液均匀混合；所述混合组件包括固定轴11、偏心导流筒12和用于驱动偏心导流筒12左右偏移的电磁组，所述电磁组包括两块分别位于混合罐10左右两侧的电磁铁13，所述固定轴11固定安装在混合罐10内，两块电磁铁13分别位于固定轴11的径向两侧，所述偏心导流筒12活动套设在固定轴11上，且所述偏心导流筒12的内径大于固定轴11的外径，以便两侧的电磁铁13交替产生磁场时驱动偏心导流筒12相对固定轴11左右偏移和转动实现对A液和B液的动态混合，当左侧的电磁铁13产生磁场时，右侧的电磁铁13不产生磁场，同理，当右侧的电磁铁13产生磁场时，左侧的电磁铁13不产生磁场，这里偏心导流筒12可采用不导磁的塑料、橡胶或树脂制成。In this embodiment, in order to uniformly mix liquid A and liquid B; the mixing assembly includes a fixed shaft 11, an eccentric guide tube 12 and an electromagnetic group for driving the eccentric guide tube 12 to shift left and right. The electromagnetic group It includes two electromagnets 13 respectively located on the left and right sides of the mixing tank 10. The fixed shaft 11 is fixedly installed in the mixing tank 10. The two electromagnets 13 are located on both radial sides of the fixed shaft 11. The eccentric flow guide The cylinder 12 is movably sleeved on the fixed shaft 11, and the inner diameter of the eccentric guide cylinder 12 is larger than the outer diameter of the fixed shaft 11, so that when the electromagnets 13 on both sides alternately generate magnetic fields, the eccentric guide cylinder 12 is driven relative to the fixed shaft 11 The left and right deflection and rotation realize the dynamic mixing of liquid A and liquid B. When the electromagnet 13 on the left generates a magnetic field, the electromagnet 13 on the right does not generate a magnetic field. Similarly, when the electromagnet 13 on the right generates a magnetic field, , the electromagnet 13 on the left side does not generate a magnetic field, and the eccentric guide tube 12 here can be made of non-magnetic plastic, rubber or resin.
在本实施例中，如图4-5所示，为了保证浆液的同步注浆；在步骤(5)中，所述注浆管道包括注浆管14和半圆形注浆环15，所述半圆形注浆环15的内侧设有用于容纳浆液的半环形扩容腔16，所述注浆管14的一端与混合装置连接，注浆管14的另一端与半环形扩容腔16连接，所述半圆形注浆环15的外侧设有半环形橡胶唇，所述半环形橡胶唇包括弹性上唇17和弹性下唇18，所述弹性上唇17和弹性下唇18之间形成有半环形缝隙19以便半环形扩容腔16压力增大时浆液由半环形缝隙19同时挤出充填至地层和管片之间的空隙。In this embodiment, as shown in Figures 4-5, in order to ensure synchronous grouting of grout; in step (5), the grouting pipeline includes a grouting pipe 14 and a semicircular grouting ring 15. The inside of the semicircular grouting ring 15 is provided with a semi-annular expansion chamber 16 for accommodating slurry. One end of the grouting pipe 14 is connected to the mixing device, and the other end of the grouting pipe 14 is connected to the semi-annular expansion chamber 16. A semi-annular rubber lip is provided on the outside of the semi-circular grouting ring 15. The semi-annular rubber lip includes an elastic upper lip 17 and an elastic lower lip 18. A semi-annular gap is formed between the elastic upper lip 17 and the elastic lower lip 18. 19 so that when the pressure of the semi-annular expansion chamber 16 increases, the slurry is simultaneously extruded from the semi-annular gap 19 and filled into the gap between the formation and the segment.
本发明所采用的同步双液注浆工艺，既适用于管片壁后注浆，也适用于盾体注浆，盾体注浆就是通过盾体注浆孔注入，先在坑外分别配置A液和B液，再分别将A液和B液输送至坑内进行混合，保证混合浆液能以最短的速度充填到地层和管片之间的间隙内，从而有效防止混合浆液在充填前发生凝结，堵塞管道，并且，双液注浆凝结效果好，凝结速度快。The simultaneous double-liquid grouting process used in the present invention is suitable for both segment wall rear grouting and shield grouting. Shield grouting is injected through the shield grouting hole. A is first configured outside the pit. liquid and B liquid, and then transport liquid A and liquid B to the pit for mixing to ensure that the mixed slurry can be filled into the gap between the formation and the segment at the shortest speed, thus effectively preventing the mixed slurry from condensing before filling. It can block the pipes, and the double-liquid grouting has good condensation effect and fast condensation speed.
本发明通过设置物料罐，对A液和B液初步进行混合，A液和B液分别通过 两根进料管2分别注入物料罐，进料管2上设置的冲洗管3可及时对进料管进行冲洗，有效防止进料管2堵塞，清洗时，通过打开冲洗阀，关闭开关阀，有效防止污染，并且，物料罐1的顶部设置弹性橡胶盖8，通过挤压气缸9向下挤压弹性橡胶盖8，使弹性橡胶盖8发生变形，进而挤压物料向下移动，从而完成推进物料的目的。The present invention preliminarily mixes liquid A and liquid B by setting up a material tank. Liquid A and liquid B are respectively injected into the material tank through two feeding pipes 2. The flushing pipe 3 provided on the feeding pipe 2 can timely control the feeding. The pipe is flushed to effectively prevent the feed pipe 2 from being blocked. During cleaning, the flush valve is opened and the switch valve is closed to effectively prevent contamination. Moreover, an elastic rubber cover 8 is set on the top of the material tank 1, and the extrusion cylinder 9 is used to squeeze downwards. The elastic rubber cover 8 deforms the elastic rubber cover 8, and then squeezes the material to move downward, thereby completing the purpose of pushing the material.
本发明采用在物料罐1下方设置混合机构，物料罐1内的物料被向下推进，在混合罐10进行二次混合，偏心导流筒12为圆柱形，活动套设在固定轴11上，将混合罐10分隔成左右两个通道，因偏心导流筒12的内径远大于固定轴11的外径，偏心导流筒12可相对固定轴11左右偏移，混合罐10两侧设有电磁铁13，当两个电磁铁13高速交替产生磁场，就会带动偏心导流筒12不断左右偏摆，偏心导流筒12反复左右摆动会形成复杂的紊流效果，从而增加A液和B液的混合效果，因A液和B液的混合过程是在流动中完成的动态混合，其动量损失小，且无需专门的拌料装置和容器，所占空间小。In the present invention, a mixing mechanism is provided below the material tank 1. The materials in the material tank 1 are pushed downward and mixed twice in the mixing tank 10. The eccentric guide tube 12 is cylindrical, and the movable sleeve is set on the fixed shaft 11. The mixing tank 10 is divided into two left and right channels. Since the inner diameter of the eccentric guide tube 12 is much larger than the outer diameter of the fixed shaft 11, the eccentric guide tube 12 can be offset left and right relative to the fixed shaft 11. Electromagnetic devices are provided on both sides of the mixing tank 10. Iron 13, when the two electromagnets 13 alternately generate a magnetic field at high speed, it will drive the eccentric guide tube 12 to continuously swing left and right. The repeated left and right swings of the eccentric guide tube 12 will form a complex turbulent flow effect, thereby increasing the amount of liquid A and liquid B. The mixing effect is very good, because the mixing process of liquid A and liquid B is a dynamic mixing completed in the flow, the momentum loss is small, no special mixing device and container are needed, and the space occupied is small.
本发明还可以通过磁场控制其左右偏移的量，从而调节两侧通道的流量和压强，同时因偏心导流筒12可转动安装，当偏心导流筒12两侧压强不同造成粘滞性不同，就会带动偏心导流筒12在这一过程中发生旋转，从而实现既能减少对流体的阻力，又能利用流体的覆壁效应使一部分流体反向对冲，从而大大提高混合效果。The present invention can also control its left and right offset through a magnetic field, thereby adjusting the flow and pressure of the channels on both sides. At the same time, because the eccentric guide tube 12 can be rotated and installed, when the pressure on both sides of the eccentric guide tube 12 is different, the viscosity will be different. , it will drive the eccentric guide tube 12 to rotate during this process, thereby not only reducing the resistance to the fluid, but also utilizing the wall covering effect of the fluid to make part of the fluid reversely hedge, thereby greatly improving the mixing effect.
本发明注浆管道可实现同时出料同步注浆，具体的，半环形缝隙19由弹性上唇17和弹性下唇18组成，在静力状态下会闭合在一起，只有当环形扩容腔内压力超过阈值半环形缝隙19才会张开，注浆时，混合装置的混合浆液通过注浆泵输送至注浆管14内，汇集在半圆形注浆环15的环形扩容腔内，当混合浆液源源不断汇入环形扩容腔内，会导致环形扩容腔压力增加，当环形扩容腔无法承载混合浆液时，混合浆液会挤开半环形缝隙19，同时由半环形缝隙19挤出充填到地层和管片之间的间隙内，从而实现同步出料。The grouting pipeline of the present invention can realize simultaneous discharging and synchronous grouting. Specifically, the semi-annular gap 19 is composed of an elastic upper lip 17 and an elastic lower lip 18. They will be closed together in a static state. Only when the pressure in the annular expansion chamber exceeds The threshold semi-annular gap 19 will open. During grouting, the mixed slurry of the mixing device is transported to the grouting pipe 14 through the grouting pump, and is collected in the annular expansion cavity of the semicircular grouting ring 15. When the source of the mixed slurry Continuously flowing into the annular expansion chamber will cause the pressure of the annular expansion chamber to increase. When the annular expansion chamber cannot carry the mixed slurry, the mixed slurry will squeeze out the semi-annular gap 19, and at the same time, it will be squeezed out from the semi-annular gap 19 and filled into the formation and pipe segments. within the gap between them, thereby achieving synchronous discharging.
上列较佳实施例，对本发明的目的、技术方案和优点进行了进一步详细说明，所应理解的是，以上所述仅为本发明的较佳实施例而已，并不用以限制本发明，凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。The above preferred embodiments further describe the objectives, technical solutions and advantages of the present invention in detail. It should be understood that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Within the spirit and principles of the present invention, any modifications, equivalent substitutions, improvements, etc. shall be included in the protection scope of the present invention.

Claims (10)

  1. 一种盾构同步双液注浆工艺，其特征在于：包括以下步骤：A synchronous double-liquid grouting process for shields, which is characterized by: including the following steps:
    (1)将膨润土、卡拉胶、葡萄糖粉、硅灰粉、硅藻土以及水放入贮液罐搅拌器内搅拌混合，配置成A液；(1) Put bentonite, carrageenan, glucose powder, silica fume powder, diatomaceous earth and water into the liquid storage tank stirrer, stir and mix, and prepare liquid A;
    (2)通过压送注入泵将A液注入台车旋转搅拌罐内进行二次搅拌；(2) Inject liquid A into the rotating mixing tank of the trolley through a pressure injection pump for secondary mixing;
    (3)将水和水玻璃注入后方台车贮液槽内进行搅拌混合，配置成B液；(3) Inject water and water glass into the liquid storage tank of the rear trolley, stir and mix, and prepare liquid B;
    (4)将台车旋转搅拌罐内的A液和后方台车贮液槽内的B液通过注入泵注入混合装置内，制成混合浆液；(4) Inject liquid A in the rotating mixing tank of the trolley and liquid B in the liquid storage tank of the rear trolley into the mixing device through the injection pump to make a mixed slurry;
    (5)将混合装置内的混合浆液注入注浆管道内，由注浆管道的注浆口充填至地层和管片之间的空隙。(5) Inject the mixed slurry in the mixing device into the grouting pipe, and fill it from the grouting port of the grouting pipe to the gap between the formation and the segment.
  2. 根据权利要求1所述的盾构同步双液注浆工艺，其特征在于：在步骤(1)中，所述膨润土、卡拉胶、葡萄糖粉、硅灰粉、硅藻土以及水的配比为350：0.5：2：0.3：1.2：865。The shield synchronous double-liquid grouting process according to claim 1, characterized in that: in step (1), the proportion of bentonite, carrageenan, glucose powder, silica fume powder, diatomite and water is 350:0.5:2:0.3:1.2:865.
  3. 根据权利要求1所述的盾构同步双液注浆工艺，其特征在于：在步骤(3)中，所述水玻璃的浓度为30～40波美度，水与水玻璃按质量比为2:1～1:1制备B液。The shield synchronous double-liquid grouting process according to claim 1, characterized in that: in step (3), the concentration of the water glass is 30 to 40 degrees Baume, and the mass ratio of water to water glass is 2 :1～1:1 to prepare solution B.
  4. 根据权利要求1所述的盾构同步双液注浆工艺，其特征在于：在步骤(4)中，所述A液和B液按25～30：1的体积比进行混合。The shield synchronous two-liquid grouting process according to claim 1, characterized in that in step (4), the A liquid and B liquid are mixed at a volume ratio of 25 to 30:1.
  5. 根据权利要求1所述的盾构同步双液注浆工艺，其特征在于：在步骤(4)中，所述混合装置包括物料罐、位于物料罐上方用于向下挤压物料的挤压机构以及位于物料罐下方用于将A液和B液充分混合的混合机构，所述物料罐上连接有两根分别用于注入A液和B液的进料管，所述进料管上连接有冲洗管，所述冲洗管与进料管之间的夹角为30度，所述冲洗管上设有冲洗阀，所述进料管上还设有位于冲洗管外侧的开关阀。The shield synchronous double-liquid grouting process according to claim 1, characterized in that in step (4), the mixing device includes a material tank and an extrusion mechanism located above the material tank for squeezing the material downwards. And a mixing mechanism located below the material tank for fully mixing liquid A and liquid B. The material tank is connected with two feed pipes for injecting liquid A and liquid B respectively. The feed pipe is connected with A flushing pipe, the angle between the flushing pipe and the feed pipe is 30 degrees, the flushing pipe is provided with a flushing valve, and the feeding pipe is also provided with a switch valve located outside the flushing pipe.
  6. 根据权利要求5所述的盾构同步双液注浆工艺，其特征在于：所述物料罐上分别设有用于安装两根进料管的第一进料口和第二进料口，所述第一进料口和第二进料口相对设置，所述物料罐内设有用于封堵第一进料口和第二进料口的可伸缩组件，所述可伸缩组件包括固定杆、活动设于固定杆两端的伸缩杆以及设于伸缩杆端部用于封堵第一进料口或第二进料口的橡胶堵头，所述橡胶堵头呈圆锥状，所述伸缩杆上套设在用于推顶橡胶堵头封堵在第一进料口或第 二进料口上的复位弹簧，所述物料罐内设有用于固定安装固定杆的支架。The shield synchronous double-liquid grouting process according to claim 5, characterized in that: the material tank is provided with a first feed port and a second feed port for installing two feed pipes, and the The first feed port and the second feed port are arranged oppositely, and a retractable component for blocking the first feed port and the second feed port is provided in the material tank. The retractable component includes a fixed rod, a movable Telescopic rods provided at both ends of the fixed rod and rubber plugs provided at the ends of the telescopic rods for blocking the first feed inlet or the second feed inlet. The rubber plugs are conical, and the telescopic rod is covered with a rubber plug. A return spring is provided for pushing up the rubber plug to block the first feed port or the second feed port, and a bracket for fixing and installing the fixing rod is provided in the material tank.
  7. 根据权利要求5所述的盾构同步双液注浆工艺，其特征在于：所述物料罐的顶部设有开口，所述挤压机构包括可拆卸安装在开口上的弹性橡胶盖和用于驱动弹性橡胶盖向下变形挤压物料的挤压气缸，所述挤压气缸安装在机架上，所述挤压气缸的气缸杆与弹性橡胶盖连接以驱动弹性橡胶盖向下变形。The shield synchronous double-liquid grouting process according to claim 5, characterized in that: the top of the material tank is provided with an opening, and the extrusion mechanism includes an elastic rubber cover removably installed on the opening and a driving mechanism. The elastic rubber cover deforms downward to squeeze the extrusion cylinder of the material. The extrusion cylinder is installed on the frame. The cylinder rod of the extrusion cylinder is connected with the elastic rubber cover to drive the elastic rubber cover to deform downward.
  8. 根据权利要求5所述的盾构同步双液注浆工艺，其特征在于：所述混合机构包括混合罐和设于混合罐内用于混合A液和B液的混合组件，所述混合罐的上端设有用于与物料罐连接的进料口，所述混合罐的下端设有用于与注浆管道连接的出料口。The shield synchronous two-liquid grouting process according to claim 5, characterized in that: the mixing mechanism includes a mixing tank and a mixing component disposed in the mixing tank for mixing liquid A and liquid B, and the mixing tank The upper end is provided with an inlet for connection with the material tank, and the lower end of the mixing tank is provided with an outlet for connection with the grouting pipe.
  9. 根据权利要求8所述的盾构同步双液注浆工艺，其特征在于：所述混合组件包括固定轴、偏心导流筒和用于驱动偏心导流筒左右偏移的电磁组，所述电磁组包括两块分别位于混合罐左右两侧的电磁铁，所述固定轴固定安装在混合罐内，两块电磁铁分别位于固定轴的径向两侧，所述偏心导流筒活动套设在固定轴上，且所述偏心导流筒的内径大于固定轴的外径，以便两侧的电磁铁交替产生磁场时驱动偏心导流筒相对固定轴左右偏移和转动实现对A液和B液的动态混合。The shield synchronous double-liquid grouting process according to claim 8, characterized in that: the mixing component includes a fixed shaft, an eccentric guide tube and an electromagnetic group for driving the eccentric guide tube to shift left and right, and the electromagnetic The group includes two electromagnets located on the left and right sides of the mixing tank. The fixed shaft is fixedly installed in the mixing tank. The two electromagnets are located on both radial sides of the fixed shaft. The eccentric guide tube is movable sleeved on On the fixed shaft, and the inner diameter of the eccentric guide tube is larger than the outer diameter of the fixed shaft, so that when the electromagnets on both sides alternately generate magnetic fields, the eccentric guide tube can be driven left and right to shift and rotate relative to the fixed axis to achieve liquid A and liquid B. dynamic mixing.
  10. 根据权利要求1所述的盾构同步双液注浆工艺，其特征在于：在步骤(5)中，所述注浆管道包括注浆管和半圆形注浆环，所述半圆形注浆环的内侧设有用于容纳浆液的半环形扩容腔，所述注浆管的一端与混合装置连接，注浆管的另一端与半环形扩容腔连接，所述半圆形注浆环的外侧设有半环形橡胶唇，所述半环形橡胶唇包括弹性上唇和弹性下唇，所述弹性上唇和弹性下唇之间形成有半环形缝隙以便半环形扩容腔压力增大时浆液由半环形缝隙同时挤出充填至地层和管片之间的空隙。The shield synchronous double-liquid grouting process according to claim 1, characterized in that: in step (5), the grouting pipeline includes a grouting pipe and a semicircular grouting ring, and the semicircular grouting ring The inner side of the grouting ring is provided with a semi-annular expansion cavity for accommodating slurry. One end of the grouting pipe is connected to the mixing device, and the other end of the grouting pipe is connected to the semi-annular expansion cavity. The outside of the semicircular grouting ring A semi-annular rubber lip is provided. The semi-annular rubber lip includes an elastic upper lip and an elastic lower lip. A semi-annular gap is formed between the elastic upper lip and the elastic lower lip so that when the pressure of the semi-annular expansion chamber increases, the slurry will flow through the semi-annular gap. At the same time, it is extruded and filled into the gap between the formation and the pipe segment.
PCT/CN2022/100358 2022-06-10 2022-06-22 Shield synchronous double-liquid grouting process WO2023236250A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202210650543.2A CN115012994B (en) 2022-06-10 2022-06-10 Shield synchronous double-liquid grouting process
CN202210650543.2 2022-06-10

Publications (1)

Publication Number Publication Date
WO2023236250A1 true WO2023236250A1 (en) 2023-12-14

Family

ID=83073381

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2022/100358 WO2023236250A1 (en) 2022-06-10 2022-06-22 Shield synchronous double-liquid grouting process

Country Status (2)

Country Link
CN (1) CN115012994B (en)
WO (1) WO2023236250A1 (en)

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1181884A (en) * 1997-09-05 1999-03-26 Kawasaki Heavy Ind Ltd Simultaneous backfilling injection device for shield boring machine
CN103953365A (en) * 2014-05-20 2014-07-30 中铁四局集团有限公司 Tunnel single-liquid and double-liquid alternate grouting reinforcement process and device
CN104074530A (en) * 2014-06-17 2014-10-01 中铁十五局集团有限公司 Shield synchronous grouting construction method and construction material
CN110608042A (en) * 2019-10-30 2019-12-24 华东交通大学 Synchronous grouting device for shield tunnel construction
CN110721613A (en) * 2019-09-10 2020-01-24 盐城哈力动力传动及智能装备产业研究院有限公司 Stirring device and stirring method for architectural coating
CN112280909A (en) * 2020-09-07 2021-01-29 温州谦琇电子商务有限公司 Auxiliary coating device capable of adjusting concentration and avoiding slurry accumulation
CN213797330U (en) * 2020-11-17 2021-07-27 南京工程学院 Stirring device for improving dispersibility of fibers in fiber dispersing agent solution
CN114146485A (en) * 2021-12-02 2022-03-08 玉溪沃森生物技术有限公司 Centrifugal liquid separation drawing liquid device
CN114165244A (en) * 2021-11-30 2022-03-11 中交隧道工程局有限公司 Shield synchronous double-liquid grouting process field verification test method

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3830101B2 (en) * 2003-05-29 2006-10-04 ショーボンド建設株式会社 Backfill injection material injection system in tunnels
JP2013217100A (en) * 2012-04-09 2013-10-24 Shimoda Gijutsu Kenkyusho:Kk Pressure feed injection method of two-liquid grout
CN110630293A (en) * 2019-10-30 2019-12-31 阳铁机械（杭州）有限公司 Double-liquid and method for grouting wall
CN112320110A (en) * 2020-10-26 2021-02-05 江苏兴科制药设备制造有限公司 Material tank capable of preventing blockage
CN112723836B (en) * 2021-02-03 2022-02-08 中国矿业大学(北京) Shield excavation gap synchronous grouting slurry for water-rich silty soil stratum
CN114180930B (en) * 2021-12-31 2022-11-11 中国海洋大学 High-water-pressure ultra-large-diameter underwater shield tunnel double-liquid grouting slurry, process and application

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1181884A (en) * 1997-09-05 1999-03-26 Kawasaki Heavy Ind Ltd Simultaneous backfilling injection device for shield boring machine
CN103953365A (en) * 2014-05-20 2014-07-30 中铁四局集团有限公司 Tunnel single-liquid and double-liquid alternate grouting reinforcement process and device
CN104074530A (en) * 2014-06-17 2014-10-01 中铁十五局集团有限公司 Shield synchronous grouting construction method and construction material
CN110721613A (en) * 2019-09-10 2020-01-24 盐城哈力动力传动及智能装备产业研究院有限公司 Stirring device and stirring method for architectural coating
CN110608042A (en) * 2019-10-30 2019-12-24 华东交通大学 Synchronous grouting device for shield tunnel construction
CN112280909A (en) * 2020-09-07 2021-01-29 温州谦琇电子商务有限公司 Auxiliary coating device capable of adjusting concentration and avoiding slurry accumulation
CN213797330U (en) * 2020-11-17 2021-07-27 南京工程学院 Stirring device for improving dispersibility of fibers in fiber dispersing agent solution
CN114165244A (en) * 2021-11-30 2022-03-11 中交隧道工程局有限公司 Shield synchronous double-liquid grouting process field verification test method
CN114146485A (en) * 2021-12-02 2022-03-08 玉溪沃森生物技术有限公司 Centrifugal liquid separation drawing liquid device

Also Published As

Publication number Publication date
CN115012994A (en) 2022-09-06
CN115012994B (en) 2023-03-31

Similar Documents

Publication Publication Date Title
CN211692396U (en) Recoverable double-liquid mixed grouting hole sealing device for deep hole
CN209568616U (en) A kind of grout sleeve of unidirectional automatic plugging
CN106827240A (en) One kind is poured and stirs irrigation sprinkler with without dead angle
CN105604522B (en) Coal mine down-hole drilling polyurethane long range Fast Fixed-point hole sealing device and method
WO2023236250A1 (en) Shield synchronous double-liquid grouting process
CN113236305A (en) Segmented grouting device with instant slurry mixing function and grouting method
CN205638398U (en) Oil field ground water shutoff profile control fluid distribution device
CN207092959U (en) A kind of cement mixing pile drill bit
CN205895264U (en) Shield constructs quick -witted slip casting and prevents stifled component
CN210264734U (en) Shield constructs quick-witted compound pipe biliquid slip casting device
CN107387121A (en) The all-hydraulic coupling control system of novel double liquid grout injecting
CN104763877B (en) Tailing slurry pipeline conveying resistance reduction device
CN215519999U (en) Grouting device for grouting sleeve of prefabricated vertical component
CN110094538B (en) Crude oil transportation pipeline ball valve based on differential pressure extraction and siphon exhaust
CN209555927U (en) The mini-valve tube of two fluid grouting core pipe design
CN111810079A (en) Double-liquid rotary jet drilling tool and double-liquid rotary jet grouting reinforcement method
CN209510385U (en) One kind, which is adopted, fills integral type goaf filling system
CN107489153B (en) A kind of casting tube for the injection of stake holes concrete grout
CN206144516U (en) Add futilely muddy thick liquid grouting for water blocking device of aggregate outside strong super high water material hole in water -bearing stratum
JPH06158636A (en) Method for grouting
CN207297031U (en) A kind of all-hydraulic coupling control system of novel double liquid grout injecting
CN205915580U (en) Compounding device with cleaning function
CN219365522U (en) Grouting device
CN205895191U (en) Tunnel chemical grouting drill way closing means
CN203525595U (en) Mixing stirrer for two-fluid grouting to orifices

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 22945389

Country of ref document: EP

Kind code of ref document: A1