Multi-section type electric chemical grouting device for gap filling
Through the electroosmotic action of the multi-stage electrochemical grouting device and the design of the transformer grouting pump, the problems of slow slurry flow rate and uneven filling during the grouting process are solved, and uniform filling of gaps and extension of grouting radius are achieved, thereby improving the Grouting effect and construction efficiency.
Patent Information
- Application Number
- CN202420902521.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-28
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2034-04-28
AI Technical Summary
During the grouting process, the low-pressure grout flow rate is slow, and particles with large particle sizes are stuck in the small gap cracks, resulting in uneven filling and inability to diffuse effectively, and the expected grouting effect cannot be achieved.
Using a multi-stage electrochemical grouting device, the pore water is collected through electroosmotic action, and the transformer grouting pump and multi-stage grouting valve design is used to ensure that the mud gradually fills the gap, combines the pump and drainage pipes to keep the gap unobstructed and prolong the diffusion of the slurry. Radius, enhance penetration effect.
The uniform filling of the gap is achieved, the grouting radius is extended, the grouting effect and reinforcement effect are improved, and the construction efficiency is improved.
Smart Images
Figure CN222206356U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of grouting construction, in particular to a multi-stage electric chemical grouting device for gap filling. Background Art
[0002] Construction in unfavorable geology, including weak and broken rock with short self-stabilization time, fault fracture zone, and large-scale water dripping or gushing areas, can all use grouting to block water and reinforce surrounding rocks. Grouting refers to the construction technology of injecting cement slurry or other slurry into water-bearing cracks, cavities or unstable formations through drilling holes to block water or reinforce the formation. Grouting technology can be divided into two categories: static pressure grouting and high-pressure jet grouting. The principle of grouting water blocking and reinforcement is to replace the position of air in the rock cracks with slurry, turn discrete rocks into an integral structure, and increase its properties in all aspects.
[0003] During the grouting process, as the slurry pressure is low, the slurry flow rate will become slow. When the large-sized slurry particles encounter a crack with a smaller gap width during the flow process, they will be stuck in the crack because the resistance is greater than the slurry pressure and stay in this crack. With the subsequent flow of slurry, more and more large-sized particles fill this crack until the crack is completely blocked. Although the purpose of filling the crack space is achieved, the passage of the slurry particles with smaller particle sizes into the space behind is also blocked, and the grouting work ends early. Therefore, the cracks filled are only those close to the grouting pipe. There is little or no slurry in the rock mass farther away, which will result in a small slurry diffusion radius and fail to achieve the expected grouting effect. Utility Model Content
[0004] The utility model aims to provide a multi-stage electric chemical grouting device for gap filling to solve the problems raised in the above-mentioned background technology.
[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0006] A multi-stage electric chemical grouting device for gap filling comprises a double-liquid slurry mixer, a multi-stage grouting valve and a plurality of electric chemical grouting devices, a grouting pump is installed between the double-liquid slurry mixer and the multi-stage grouting valve, a variable pressure grouting pump is installed on one side of the multi-stage grouting valve, the end of the variable pressure grouting pump slurry outlet pipe is connected to a grouting hose via a hose joint, one end of the grouting hose is connected to a plurality of grouting branch pipes via a branch pipe joint, one end of the plurality of grouting branch pipes are all connected to the electric chemical grouting device, one side of the electric chemical grouting device is connected to a water pumping pipe, and a water pump is installed on the water pumping pipe.
[0007] As a further solution of the utility model: the electric chemical grouting device includes a grouting hard pipe, a drainage pipe and a battery, the grouting hard pipe is connected to the positive electrode of the battery through a wire, the drainage pipe is connected to the negative electrode of the battery through a wire, one end of the grouting hard pipe is inserted into the gap in the ground (or wall), and the other end is connected and fixed to the grouting branch pipe, one end of the drainage pipe is inserted into the gap in the ground (or wall) near the grouting hard pipe, and the other end is connected and fixed to the pumping pipe.
[0008] As a further solution of the utility model: the grouting rigid pipe includes a first PVC sleeve of an outer layer and a metal anode tube of an inner layer, a plurality of grouting holes are evenly opened at the lower end of the grouting rigid pipe body, and the metal anode tube is connected to the positive electrode of the battery through a wire; the drainage pipe includes a second PVC sleeve of an outer layer and a metal cathode tube of an inner layer, a plurality of water drawing holes are evenly opened at the lower end of the drainage pipe body, and the metal cathode tube is connected to the negative electrode of the battery through a wire.
[0009] As a further solution of the utility model: one end of the slurry inlet pipe of the variable pressure grouting pump is inserted into the multi-stage grouting valve and a pressure gauge is installed at one end of the slurry outlet pipe.
[0010] As a further solution of the utility model: the double liquid slurry mixer includes a box body, and the upper ends of both sides of the box body are respectively provided with a first slurry inlet and a second slurry inlet, a catalyst inlet is provided on one side of the top of the box body, and a slurry outlet is provided at the lower end of one side of the box body, one end of the slurry inlet pipe of the grouting pump is inserted into the slurry outlet and a sealing ring is provided at the joint.
[0011] As a further solution of the utility model: a stirring shaft is rotatably connected to the middle position inside the box body, a stirring blade is arranged on the stirring shaft, a motor is installed in the middle position of the top of the box body, and one end of the motor output shaft is fixedly connected to one end of the stirring shaft.
[0012] As a further solution of the utility model: the multi-stage grouting valve includes a valve body, the interior of the valve body is hollow and a segmented piston is slidably connected to the interior, a plurality of springs are connected to the bottom of the segmented piston, the bottom ends of the plurality of springs are fixedly connected to the bottom wall of the valve body, a slurry inlet is provided at the upper end of one side of the valve body, and a slurry discharge port is provided at the lower end of the other side of the valve body, one end of the slurry outlet pipe of the grouting pump is inserted into the slurry inlet and a sealing ring is provided at the plug-in connection, and one end of the slurry inlet pipe of the variable pressure grouting pump is inserted into the slurry discharge port and a sealing ring is provided at the plug-in connection.
[0013] As a further solution of the utility model: a telescopic baffle is arranged on one side of the valve body close to the slurry discharge port, and the upper and lower ends of the telescopic baffle are respectively connected and fixed to the segmented piston and the bottom wall of the valve body, the maximum height of the segmented piston in the valve body is less than the height of the slurry inlet, and the minimum height of the segmented piston in the valve body is less than the height of the slurry discharge port.
[0014] Compared with the prior art, the beneficial effects of the present invention are as follows:
[0015] 1. In the utility model, the grouting hard pipe and the drainage pipe are connected to the positive and negative electrodes of the battery respectively through the wires. After the power is turned on, the electroosmosis will occur between the grouting hard pipe and the drainage pipe, and the pore water in the soil will be collected in the drainage pipe. The water-drawing holes on the surface of the drainage pipe body can facilitate the pore water to enter the pipe body. Then, the pore water in the drainage pipe can be pumped out through the coordinated use of the water pump and the water-drawing pipe, so that the cracks in the soil body remain unobstructed. There is no obstruction of pore water during grouting, and grouting will be easier.
[0016] 2. In the utility model, under the pressure of the variable pressure grouting pump and the action of electroosmosis, the mud flows along the pores in the soil to one side of the drainage pipe until the entire pore is filled. The design of the piston and the telescopic baffle inside the multi-stage grouting valve can ensure that the mud pumped out by the variable pressure grouting pump each time is a fixed amount, which is convenient for pressurizing the mud flowing into the variable pressure grouting pump. At the same time, each section of mud enters the grouting hard pipe in turn, and the mud at the rear pushes the mud at the front to continue to move forward. The gap will not be filled with a large amount of mud in an instant and hinder each other, which is conducive to filling the gap;
[0017] 3. In the utility model, multiple groups of grouting hard pipes and drainage pipes can be laid at the same time. Multiple grouting hard pipes can be connected to grouting hoses through grouting branch pipes, and each drainage pipe can also be connected to a water pump through a separate water pumping pipe, so as to achieve simultaneous construction at different locations in the same area, speed up the grouting and filling speed, and improve construction efficiency;
[0018] 4. In the utility model, the double liquid slurry is mixed and stirred in the section to be reinforced, and the slurry is injected into the reinforced section in a short time, thereby avoiding the rapid solidification of the mixed double liquid slurry. At the same time, the water contained in the section with a higher water content is discharged through the drainage pipe through the electrochemical grouting method, and a natural gap channel is formed at the same time, which is convenient for the injection of the mixed double liquid slurry. Then, multi-stage variable pressure grouting is used to expand the width of the cracks without destroying the original strength, open the closed cracks, increase the channel for the circulation of the slurry, enhance the penetration effect of the slurry, increase the filling rate of the gaps, enhance the grouting effect, and improve the reinforcement effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0020] Figure 1 It is a structural schematic diagram of the utility model.
[0021] Figure 2 It is a schematic diagram of the planar structure of the utility model.
[0022] Figure 3 It is a schematic diagram of the expanded structure of the grouting hard pipe and the drainage pipe in the utility model.
[0023] Figure 4 It is a schematic diagram of the connection structure between the grouting hard pipe and the grouting branch pipe in the utility model.
[0024] Notes on the reference numerals: 1-dual slurry mixer, 101-first slurry inlet, 102-second slurry inlet, 103-catalyst inlet, 104-slurry outlet, 105-stirring shaft, 106-stirring blade, 107-box, 108-motor, 2-grouting pump, 3-multi-stage grouting valve, 31-valve body, 32-spring, 33-telescopic baffle, 34-segmented piston, 35-slurry inlet, 36-slurry outlet, 4-variable pressure grouting pump , 5-pressure gauge, 6-grouting hose, 7-electric chemical grouting device, 71-grouting hard pipe, 711-first PVC casing, 712-metal anode tube, 713-grouting hole, 72-drain pipe, 721-second PVC casing, 722-metal cathode tube, 723-water drawing hole, 73-battery, 74-wire, 8-branch joint, 9-hose joint, 10-grouting branch pipe, 11-water pump, 12-water pump. DETAILED DESCRIPTION
[0025] The following embodiments will be combined with the accompanying drawings to describe the utility model in detail. In the drawings or descriptions, similar or identical parts use the same reference numerals, and in actual applications, the shape, thickness or height of each component can be enlarged or reduced. The various embodiments listed in the utility model are only used to illustrate the utility model, and are not used to limit the scope of the utility model. Any obvious modifications or changes made to the utility model do not depart from the spirit and scope of the utility model.
[0026] Example 1
[0027] See also Figure 1In an embodiment of the utility model, a multi-stage electric chemical grouting device for gap filling includes a double-liquid slurry mixer 1, a multi-stage grouting valve 3 and a plurality of electric chemical grouting devices 7. A grouting pump 2 is installed between the double-liquid slurry mixer 1 and the multi-stage grouting valve 3. The slurry in the double-liquid slurry mixer 1 is extracted by the grouting pump 2 and pumped into the multi-stage grouting valve 3. A variable pressure grouting pump 4 is installed on one side of the multi-stage grouting valve 3. One end of the slurry inlet pipe of the variable pressure grouting pump 4 is inserted into the multi-stage grouting valve 3 and a pressure gauge 5 is installed on one end of the slurry outlet pipe. The end of the slurry outlet pipe of the variable pressure grouting pump 4 is connected to a grouting hose 6 through a hose connector 9. One end of the grouting hose 6 is connected to a plurality of grouting branch pipes 10 through a branch pipe connector 8. One end of the plurality of grouting branch pipes 10 are all connected to the electric chemical grouting device 7. A water pumping pipe 11 is connected to one side of the electric chemical grouting device 7, and a water pumping pump 12 is installed on the water pumping pipe 11.
[0028] See also Figure 2 The double-liquid slurry mixer 1 includes a box body 107, and the upper ends of both sides of the box body 107 are respectively provided with a first slurry inlet 101 and a second slurry inlet 102, a catalyst inlet 103 is provided on one side of the top of the box body 107, and a slurry outlet 104 is provided on the lower end of one side of the box body 107. One end of the slurry inlet pipe of the grouting pump 2 is inserted into the slurry outlet 104 and a sealing ring is provided at the plug-in position. A stirring shaft 105 is rotatably connected to the middle position inside the box body 107, and a stirring blade 106 is provided on the stirring shaft 105. A motor 108 is installed in the middle position of the top of the box body 107, and one end of the output shaft of the motor 108 is fixedly connected to one end of the stirring shaft 105;
[0029] The multi-stage grouting valve 3 includes a valve body 31, the interior of the valve body 31 is hollow and a segmented piston 34 is slidably connected thereto, a plurality of springs 32 are connected to the bottom of the segmented piston 34, the bottom ends of the plurality of springs 32 are all fixedly connected to the bottom wall of the valve body 31, a slurry inlet 35 is provided at the upper end of one side of the valve body 31, and a slurry discharge port 36 is provided at the lower end of the other side of the valve body 31, one end of the slurry outlet pipe of the grouting pump 2 is inserted into the slurry inlet 35 and a sealing ring is provided at the plug-in position, one end of the slurry inlet pipe of the variable pressure grouting pump 4 is inserted into the slurry discharge port 36 and a sealing ring is provided at the plug-in position, a telescopic baffle 33 is provided on one side of the valve body 31 near the slurry discharge port 36, the upper and lower ends of the telescopic baffle 33 are respectively fixedly connected to the segmented piston 34 and the bottom wall of the valve body 31, the maximum height of the segmented piston 34 in the valve body 31 is less than the height of the slurry inlet 35, and the minimum height of the segmented piston 34 in the valve body 31 is less than the height of the slurry discharge port 36;
[0030] The electric chemical grouting device 7 includes a grouting hard pipe 71, a drainage pipe 72 and a battery 73. The grouting hard pipe 71 is connected to the positive electrode of the battery 73 through a wire 74, and the drainage pipe 72 is connected to the negative electrode of the battery 73 through a wire 74. One end of the grouting hard pipe 71 is inserted into the gap in the ground (or wall), and the other end is connected and fixed to the grouting branch pipe 10. One end of the drainage pipe 72 is inserted into the gap in the ground (or wall) near the grouting hard pipe 71, and the other end is connected and fixed to the pumping pipe 11.
[0031] Example 2
[0032] See also Figures 3-4 On the basis of Example 1, the grouting hard tube 71 includes an outer first PVC sleeve 711 and an inner metal anode tube 712. A plurality of grouting holes 713 are evenly opened at the lower end of the tube body of the grouting hard tube 71. The plurality of grouting holes 713 all penetrate the inner walls of the first PVC sleeve 711 and the metal anode tube 712 and extend into the cavity inside the metal anode tube 712. The metal anode tube 712 is connected to the positive electrode of the battery 73 through a wire 74.
[0033] The drain pipe 72 includes an outer second PVC sleeve 721 and an inner metal cathode tube 722. A plurality of water-drawing holes 723 are evenly arranged at the lower end of the drain pipe 72 body. The plurality of water-drawing holes 723 penetrate the inner walls of the second PVC sleeve 721 and the metal cathode tube 722 and extend into the cavity inside the metal cathode tube 722. The metal cathode tube 722 is connected to the negative pole of the battery 73 through a wire 74. The grouting hard tube 71 and the drain pipe 72 both have a certain structural strength and are convenient for being inserted into gaps in the ground or walls.
[0034] Working principle:
[0035] First, determine the area that needs grouting, and determine the number and layout of the grouting hard pipes 71 and the drainage pipes 72 according to the actual number of cracks in the area. Then, dig a pre-buried hole and insert the grouting hard pipes 71 and the drainage pipes 72 into the hole. Then, connect the grouting hard pipes 71 and the drainage pipes 72 to the positive and negative electrodes of the battery 73 through the wires 74. After the power is turned on, electroosmosis will occur between the grouting hard pipes 71 and the drainage pipes 72, and the pore water in the soil will be collected in the drainage pipes 72. The water-drawing holes 723 opened on the surface of the drainage pipe 72 can facilitate the pore water to enter the pipe body. Then, the pore water in the drainage pipes 72 can be pumped out by the coordinated use of the pump 12 and the pumping pipe 11, so that the cracks in the soil remain unobstructed. There is no pore water obstruction during grouting, and grouting will be easier.
[0036] After the pore water in the soil is discharged, the mud and catalyst required for filling the joints are added to the double-liquid slurry mixer 1, and the motor 108 and the stirring blade 106 are used to stir and mix the mud to prevent the mud from solidifying. The mixed mud is pumped into the multi-stage grouting valve 3 through the grouting pump 2. Under the gravity of the mud, the segmented piston 34 inside the multi-stage grouting valve 3 gradually moves downward until the discharge port 36 of the multi-stage grouting valve 3 is opened. Then, part of the mud inside the multi-stage grouting valve 3 is extracted by the variable pressure grouting pump 4 and pumped into the grouting hard pipe 71 through the grouting hose 6 and the grouting branch pipe 10. The mud flows out into the gaps in the soil along the holes at the bottom of the grouting hard pipe 71 and the holes on the lower end surface of the pipe body. Under the pressure of the variable pressure grouting pump 4 and the action of electroosmosis, the mud flows along the pores in the soil to the side of the drainage pipe 72 until the entire pore is filled. The design of the piston and the telescopic baffle 33 inside the multi-stage grouting valve 3 can ensure that the mud pumped out by the variable pressure grouting pump 4 each time is a fixed amount, which is convenient for pressurizing the mud flowing into the variable pressure grouting pump 4. At the same time, each section of mud enters the grouting hard pipe 71 in turn, and the mud at the rear pushes the mud at the front to continue to move forward. The gap will not be filled with a large amount of mud in an instant and hinder each other, which is conducive to filling the gap. After the grouting is completed, the dual-liquid slurry mixer, the variable pressure grouting pump, the battery, etc. are synchronously closed, and the grouting hard pipe and the drainage pipe are pulled out from the soil.
[0037] In the present device, multiple groups of grouting hard pipes and drainage pipes can be laid out at the same time. Multiple grouting hard pipes 71 can be connected to the grouting hose 6 through the grouting branch pipe 10, and each drainage pipe can also be connected to the water pump 12 through a separate pumping pipe 11, thereby realizing simultaneous construction at different locations in the same area, accelerating the speed of grouting and filling, and improving construction efficiency.
[0038] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.
[0039] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.
Claims
1. A multi-stage electric chemical grouting device for gap filling, comprising a double slurry mixer (1), a multi-stage grouting valve (3) and a plurality of electric chemical grouting devices (7), characterized in that: A grouting pump (2) is installed between the dual-liquid slurry mixer (1) and the multi-stage grouting valve (3); a variable-pressure grouting pump (4) is installed on one side of the multi-stage grouting valve (3); the end of the slurry outlet pipe of the variable-pressure grouting pump (4) is connected to a grouting hose (6) via a hose joint (9); one end of the grouting hose (6) is connected to a plurality of grouting branch pipes (10) via a branch pipe joint (8); one end of the plurality of grouting branch pipes (10) are all connected to the electric chemical grouting device (7); one side of the electric chemical grouting device (7) is connected to a water pumping pipe (11); a water pump (12) is installed on the water pumping pipe (11).
2. The multi-stage electric chemical grouting device for gap filling according to claim 1 is characterized in that: The electric chemical grouting device (7) comprises a grouting hard pipe (71), a drainage pipe (72) and a battery (73); the grouting hard pipe (71) is connected to the positive electrode of the battery (73) via a wire (74); the drainage pipe (72) is connected to the negative electrode of the battery (73) via a wire (74); one end of the grouting hard pipe (71) is inserted into a gap in the ground or wall, and the other end is connected and fixed to the grouting branch pipe (10); one end of the drainage pipe (72) is inserted into a gap in the ground or wall near the grouting hard pipe (71), and the other end is connected and fixed to the pumping pipe (11).
3. The multi-stage electric chemical grouting device for gap filling according to claim 2, characterized in that: The grouting hard pipe (71) comprises an outer first PVC sleeve (711) and an inner metal anode tube (712); a plurality of grouting holes (713) are evenly provided at the lower end of the tube body of the grouting hard pipe (71); the metal anode tube (712) is connected to the positive electrode of the storage battery (73) via a wire (74); the drainage pipe (72) comprises an outer second PVC sleeve (721) and an inner metal cathode tube (722); a plurality of water-drawing holes (723) are evenly provided at the lower end of the tube body of the drainage pipe (72); the metal cathode tube (722) is connected to the negative electrode of the storage battery (73) via a wire (74).
4. The multi-stage electric chemical grouting device for gap filling according to claim 1 or 3, characterized in that: One end of the slurry inlet pipe of the variable pressure grouting pump (4) is inserted into the multi-stage grouting valve (3) and one end of the slurry outlet pipe is installed with a pressure gauge (5).
5. The multi-stage electric chemical grouting device for gap filling according to claim 4, characterized in that: The double-liquid slurry mixer (1) comprises a casing (107), wherein the upper ends of both sides of the casing (107) are respectively provided with a first slurry inlet (101) and a second slurry inlet (102), a catalyst inlet (103) is provided on one side of the top of the casing (107), and a slurry outlet (104) is provided on the lower end of one side of the casing (107), and one end of the slurry inlet pipe of the grouting pump (2) is inserted into the slurry outlet (104), and a sealing ring is provided at the insertion point.
6. The multi-stage electric chemical grouting device for gap filling according to claim 5, characterized in that: A stirring shaft (105) is rotatably connected to the middle position inside the box (107), and a stirring blade (106) is arranged on the stirring shaft (105). A motor (108) is installed at the middle position of the top of the box (107), and one end of the output shaft of the motor (108) is fixedly connected to one end of the stirring shaft (105).
7. The multi-stage electric chemical grouting device for gap filling according to claim 6, characterized in that: The multi-stage grouting valve (3) comprises a valve body (31), the interior of the valve body (31) is hollow and a segmented piston (34) is slidably connected thereto, a plurality of springs (32) are connected to the bottom of the segmented piston (34), the bottom ends of the plurality of springs (32) are all fixedly connected to the bottom wall of the valve body (31), a slurry inlet (35) is provided at the upper end of one side of the valve body (31), and a slurry discharge port (36) is provided at the lower end of the other side of the valve body (31), one end of the slurry outlet pipe of the grouting pump (2) is inserted into the slurry inlet (35) and a sealing ring is provided at the plug-in position, and one end of the slurry inlet pipe of the variable pressure grouting pump (4) is inserted into the slurry discharge port (36) and a sealing ring is provided at the plug-in position.
8. The multi-stage electric chemical grouting device for gap filling according to claim 7, characterized in that: A telescopic baffle (33) is provided on one side of the valve body (31) near the slurry discharge port (36); the upper and lower ends of the telescopic baffle (33) are respectively connected and fixed to the segmented piston (34) and the bottom wall of the valve body (31); the maximum height of the segmented piston (34) in the valve body (31) is less than the height of the slurry inlet (35), and the minimum height of the segmented piston (34) in the valve body (31) is less than the height of the slurry discharge port (36).