A non-disturbance grouting plugging device under dynamic water conditions

Abstract

The present invention discloses a non-disturbance grouting plugging device under dynamic water conditions, belonging to the technical field of grouting plugging, comprising: a grouting hose and a grouting flower tube connected to the grouting hose, a fixing seat is installed on the grouting hose near the slurry outlet side, the diameter of the fixing seat is larger than the diameter of the grouting hose, the fixing seat is provided with an empty groove with an opening direction toward the slurry outlet side, an annular piston plate is installed in the empty groove for limited sliding, the grouting hose is arranged through the annular piston plate, and the grouting hose is sealed and connected to the annular piston plate, the fixing seat is provided with a first air hole connected to the empty groove, the peripheral wall of the fixing seat is provided with an air bag connected to the empty groove through the first air hole, the grouting flower tube is provided with an installation cavity matched with the fixing seat, and a sealing gasket is installed on the bottom wall of the installation cavity. The present invention prevents slurry from leaking out by contacting the fixing seat with the sealing gasket and expanding the air bag during the grouting process to press against the inner wall of the installation cavity.

Description

Technical Field

[0001] The invention belongs to the technical field of grouting and plugging, and in particular relates to a disturbance-free grouting and plugging device under dynamic water conditions. Background Art

[0002] Due to improper survey, design, construction or use, existing buildings may be deformed too much after being put into use, affecting their use, or the differential deformation may be too large to cause cracks in the upper components or tilt. Especially in recent years, the construction of deep foundation pits of new buildings or new underground projects nearby have caused damage to the foundations of existing buildings. When the construction of adjacent projects causes cracks or tilts in existing buildings, the grouting reinforcement method can be selected to correct the tilt and strengthen the foundation according to the structural characteristics, impact degree and stratum conditions of the existing buildings.

[0003] In actual construction, slurry is usually injected into the stratum evenly through a grouting tube. The slurry binds the loose soil particles or cracks into a good solid body, thereby strengthening the foundation. However, during grouting, the connection between the grouting hose and the grouting tube buried in the stratum is prone to leakage. Especially for most existing buildings with basements, the groundwater level is mostly higher than the basement floor elevation of the existing buildings. Under the condition of dynamic water pressure, the grouting reinforcement effect is difficult to guarantee.

[0004] Therefore, it is necessary to propose a disturbance-free grouting and plugging device under dynamic water conditions to solve the above problems. Summary of the invention

[0005] In view of this, the purpose of the present invention is to provide a disturbance-free grouting and sealing device under dynamic water conditions, which is used to solve the problem of easy leakage at the connection between the grouting hose and the grouting flower pipe during grouting in the existing technology of tilt correction and reinforcement of existing buildings or foundation reinforcement.

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] The present invention provides a disturbance-free grouting and plugging device under dynamic water conditions, comprising: a grouting hose and a grouting flower tube connected to the grouting hose, a fixing seat is installed on the grouting hose near the slurry outlet side, the diameter of the fixing seat is larger than the diameter of the grouting hose, the fixing seat is provided with a hollow groove with an opening direction toward the slurry outlet side, an annular piston plate is installed in the hollow groove for limited sliding, the grouting hose is arranged through the annular piston plate, and the grouting hose is sealed and connected to the annular piston plate, a first air hole connected to the hollow groove is provided on the fixing seat, an air bag connected to the hollow groove through the first air hole is installed on the peripheral wall of the fixing seat, the grouting flower tube is provided with an installation cavity matched with the fixing seat, and a sealing gasket is installed on the bottom wall of the installation cavity.

[0008] Furthermore, the grouting flower pipe is provided with a threaded section near the end of the grouting hose, and a connecting pipe is sleeved on the grouting hose. The connecting pipe is provided with a groove, and the inner wall of the groove is provided with a thread matching the threaded section. The connecting pipe is threadedly connected to the threaded section through the groove, and an elastic pad is installed on the bottom wall of the groove.

[0009] Furthermore, an elastic member is connected between the annular piston plate and the bottom wall of the hollow groove.

[0010] Furthermore, the fixing seat is provided with a second air hole connected to the empty slot, the second air hole is connected to the outside of the fixing seat, a valve ball is connected to the second air hole through a first spring, and the valve ball can block the second air hole away from the empty slot end.

[0011] Furthermore, the grouting flower tube is provided with a plurality of mounting holes centered on the axial direction of the grouting flower tube, the mounting holes are connected with the mounting cavity, the grouting flower tube is provided with a limiting cavity connected with the mounting holes, the fixing seat is provided with a plurality of connecting rods corresponding one to one with the mounting holes, the side wall of the connecting rod is provided with a sliding groove, and a trapezoidal block cooperating with the limiting cavity is connected in the sliding groove through a second spring.

[0012] Furthermore, an observation rod is fixedly connected to the annular piston plate, and a mounting groove cooperating with the observation rod is provided on the side wall of the grouting hose. The observation rod is slidably connected in the mounting groove, and one end of the observation rod extends out of the fixed seat.

[0013] A grouting method for a non-disturbance grouting plugging device under dynamic water conditions comprises the following steps:

[0014] S1: Insert the grouting hose into the grouting flower tube so that the fixing seat corresponds to the installation cavity, and the connecting rod corresponds to the installation hole one by one, and pull the grouting hose to confirm whether the trapezoidal block and the limit cavity are matched. If the grouting hose is pulled to separate the grouting hose 1 from the grouting flower tube, the trapezoidal block and the limit cavity are not matched, that is, the installation is not in place; if the grouting hose is pulled to drive the grouting flower tube to move, the trapezoidal block and the limit cavity are matched, that is, the installation is stable;

[0015] S2: injecting air into the empty slot through the second air hole to expand the airbag and seal the installation cavity;

[0016] S3: Rotate the connecting pipe so that the groove is threadedly connected with the threaded section;

[0017] S4: The grouting mechanism is used to inject the slurry from the grouting hose into the grouting flower tube. After the grouting hole is filled with the slurry, the injection is continued. The movement pattern of the observation rod is sensed by the sensor. If the observation rod moves back and forth, it indicates that there is leakage. In this case, the grouting is stopped until the cause of the leakage is found and repaired, and then the grouting is continued.

[0018] The beneficial effects of the present invention are:

[0019] The present invention realizes the first level of leak prevention by cooperating the fixing seat with the installation cavity and contacting the sealing gasket. During the grouting process, the slurry is injected into the grouting flower tube from the grouting hose. After the grouting flower tube is filled with the slurry, the rising of the slurry pushes the annular piston plate to rise, thereby squeezing the air in the empty groove, causing the airbag to expand and press against the inner wall of the installation cavity, thereby ensuring the stability of the connection between the grouting hose and the grouting flower tube and realizing the second level of leak prevention.

[0020] Other advantages, objectives and features of the present invention will be described in the following description and will be apparent to those skilled in the art to some extent, or those skilled in the art may be taught from the practice of the present invention. The objectives and other advantages of the present invention may be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to make the purpose, technical solution and beneficial effects of the present invention clearer, the present invention provides the following drawings for illustration:

[0022] Figure 1 This is a cross-sectional view of the installation of a fixing base according to an embodiment of the present invention;

[0023] Figure 2 It is a schematic diagram of the overall structure of an embodiment of the present invention;

[0024] Figure 3 A cross-sectional view showing the position and installation of a connecting rod according to an embodiment of the present invention;

[0025] Figure 4 For the embodiment of the present invention Figure 3 A magnified view of the part A in the middle;

[0026] Figure 5 This is a schematic diagram of the installation of the observation rod according to an embodiment of the present invention.

[0027] The markings in the accompanying drawings are as follows: grouting hose 1, grouting outlet 101, grouting flower tube 2, installation cavity 201, sealing gasket 202, threaded section 203, installation hole 204, limiting cavity 205, fixing seat 3, empty groove 301, first air hole 302, second air hole 303, first spring 304, valve ball 305, connecting rod 306, slide groove 307, second spring 308, trapezoidal block 309, annular piston plate 4, observation rod 401, installation groove 402, air bag 5, connecting pipe 6, groove 601, elastic pad 602, elastic part 7. DETAILED DESCRIPTION

[0028] like Figures 1 to 5As shown, the present invention provides a disturbance-free grouting and plugging device under dynamic water conditions, comprising: a grouting hose 1 and a grouting flower tube 2 connected to the grouting hose 1, a fixing seat 3 is fixedly installed on the grouting hose 1 near the slurry outlet 101 side, the diameter of the fixing seat 3 is larger than the diameter of the grouting hose 1, the fixing seat 3 is provided with a hollow groove 301 with an opening direction toward the slurry outlet 101 side, an annular piston plate 4 is slidingly installed in the hollow groove 301, the grouting hose 1 is arranged through the annular piston plate 4, and the grouting hose 1 is sealed and connected to the annular piston plate 4, a first air hole 302 connected to the hollow groove 301 is provided on the fixing seat 3, an air bag 5 connected to the hollow groove 301 through the first air hole 302 is installed on the peripheral wall of the fixing seat 3, the grouting flower tube 2 is provided with an installation cavity 201 cooperating with the fixing seat 3, and a sealing gasket 202 is installed on the bottom wall of the installation cavity 201.

[0029] In this scheme, if Figure 1 The grouting flower tube 2 is a hollow grouting flower tube. After drilling, when the grouting hose 1 is connected to the grouting flower tube 2, after the fixing seat 3 cooperates with the installation cavity 201, the fixing seat 3 contacts the sealing gasket 202, thereby realizing the first level of leak prevention. During the grouting process, the slurry is injected into the grouting flower tube 2 from the grouting hose 1. After the grouting flower tube 2 is filled with the slurry, the rising slurry pushes the annular piston plate 4 to rise, thereby squeezing the air in the empty groove 301, causing the airbag 5 to expand and press against the inner wall of the installation cavity 201, thereby ensuring the stability of the connection between the grouting hose 1 and the grouting flower tube 2, and realizing the second level of leak prevention.

[0030] In one embodiment of the present invention, the grouting flower pipe 2 is provided with a threaded section 203 near the end of the grouting hose 1, and a connecting pipe 6 is sleeved on the grouting hose 1. The connecting pipe 6 is provided with a groove 601, and the inner wall of the groove 601 is provided with a thread matching the threaded section 203. The connecting pipe 6 is threadedly connected to the threaded section 203 through the groove 601, and an elastic pad 602 is installed on the bottom wall of the groove 601.

[0031] In the present scheme, after the fixing seat 3 of the grouting hose 1 is installed in the installation cavity 201, the connecting pipe 6 is rotated so that the connecting pipe 6 is screwed into the threaded section 203 through the groove 601, so that the connecting pipe 6 is threadedly connected to the grouting flower pipe 2, and the connection between the connecting pipe 6 and the grouting flower pipe 2 further prevents the slurry from leaking out from the outside of the grouting flower pipe 2, and the fixing seat 3 is limited by the top wall of the groove 601 and the bottom wall of the installation cavity 201, thereby ensuring the stability of the installation of the fixing seat 3, and after the connecting pipe 6 is connected to the grouting flower pipe 2, the bottom wall of the groove 601 squeezes the fixing seat 3, that is, the elastic pad 602 cooperates with the top wall of the fixing seat 3, the bottom wall of the fixing seat 3 cooperates with the sealing pad 202, and the side wall of the fixing seat 3 cooperates with the installation cavity 201 through the airbag 5, thereby preventing the slurry from leaking out from the inside of the grouting flower pipe 2 in all directions.

[0032] In one embodiment of the present invention, an elastic member 7 is connected between the annular piston plate 4 and the bottom wall of the hollow groove 301 .

[0033] In this solution, an elastic member 7 is provided to connect with the annular piston plate 4, so that the annular piston plate 4 can slide in the empty groove 301 under the action of the elastic member 7, and when the slurry rises to push the annular piston plate 4, and after the grouting is completed, when the grouting hose 1 is taken out, the annular piston plate 4 is pushed to its original position under the action of the elastic member 7.

[0034] In one embodiment of the present invention, a second air hole 303 connected to the empty slot 301 is provided on the fixing seat 3, and the second air hole 303 is connected to the outside of the fixing seat 3. A valve ball 305 is connected to the inside of the second air hole 303 through a first spring 304, and the valve ball 305 can block the end of the second air hole 303 away from the empty slot 301.

[0035] In the present solution, after the fixing seat 3 is installed in the installation cavity 201, air is inflated into the second air hole 303 from the outside. At this time, the external gas pushes the valve ball 305 to open the second air hole 303, and the first spring 304 is compressed. The external gas is injected into the empty groove 301 from the second air hole 303 and injected into the air bag 5 from the first air hole 302, so that the connection between the connecting pipe 1 and the grouting flower pipe 2 is stable. During the grouting process, the slurry pushes the annular piston plate 4 to move. At this time, the valve ball 305 blocks the second air hole 303 under the action of the first spring 304, so that the gas in the empty groove 301 is injected into the air bag 5 from the first air hole 302, so that the air bag 5 further expands to ensure the sealing of the installation cavity 201.

[0036] In one embodiment of the present invention, the grouting flower tube 2 is provided with a plurality of mounting holes 204 centered on the axial direction of the grouting flower tube 3, the mounting holes 204 are connected to the mounting cavity 201, the grouting flower tube 2 is provided with a limiting cavity 205 connected to the mounting hole 204, the fixing seat 3 is provided with connecting rods 306 corresponding to the plurality of mounting holes 204 one by one, the side wall of the connecting rod 306 is provided with a slide groove 307, and the slide groove 307 is connected with a trapezoidal block 309 cooperating with the limiting cavity 205 through a second spring 308.

[0037] In this scheme, if Figure 4When connecting the grouting flower tube 2 and the grouting hose 1, the fixing seat 3 is installed in the installation cavity 201, and the connecting rod 306 is correspondingly connected in the installation hole 204. When the connecting rod 306 is inserted into the installation hole 204, the installation hole 204 squeezes the trapezoidal block 309 so that the trapezoidal block 309 is located in the slide groove 307. When the connecting rod 306 moves to the trapezoidal block 309 to cooperate with the limiting cavity 205, the trapezoidal block 309 moves to the limiting cavity 205 under the action of the second spring 308 to abut against, thereby stably connecting the fixing seat 3 with the grouting flower tube 2, preventing the slurry pressure inside the grouting flower tube 2 from causing the fixing seat 3 to move out of the installation cavity 201, that is, ensuring the sealing performance of the sealing gasket 202 to the bottom wall of the fixing seat 3.

[0038] In one embodiment of the present invention, an observation rod 401 is fixedly connected to the annular piston plate 4, and a mounting groove 402 matching with the observation rod 401 is provided on the side wall of the grouting hose 1, and one end of the observation rod 401 extends out of the fixing seat 3.

[0039] In this scheme, if Figure 5 When the slurry pushes the annular piston plate 4 to move, the observation rod 401 extending to the outside of the fixed seat 3 moves with the annular piston plate 4. If there is no leakage, the annular piston plate 4 remains stationary under the balance of the elastic member 7 and the slurry pressure. If leakage occurs, the elastic member 7 and the slurry pressure are unbalanced, and the annular piston plate 4 will reciprocate. That is, by observing whether the observation rod 401 has reciprocating movement during the grouting process, it can be determined whether leakage occurs. A sensor for sensing the position of the observation rod 401 can be installed on the grouting hose 1 to ensure the recognition effect of the movement of the observation rod 401.

[0040] A grouting method for a non-disturbance grouting plugging device under dynamic water conditions comprises the following steps:

[0041] S1: Insert the grouting hose 1 into the grouting flower tube 2 so that the fixing seat 3 corresponds to the installation cavity 201, and the connecting rod 306 corresponds to the installation hole 204 one by one, and pull the grouting hose 1 to confirm whether the trapezoidal block 309 and the limiting cavity 205 are matched. If the grouting hose 1 is pulled to separate the grouting hose 1 from the grouting flower tube 2, the trapezoidal block 309 and the limiting cavity 205 are not matched, that is, the installation is not in place; if the grouting hose 1 is pulled to drive the grouting flower tube 2 to move, the trapezoidal block 309 and the limiting cavity 205 are matched, that is, the installation is stable;

[0042] S2: injecting air into the empty slot 301 through the second air hole 303 to inflate the airbag 5 and block the installation cavity 201;

[0043] S3: Rotate the connecting pipe 6 so that the groove 601 is threadedly connected with the threaded section 203;

[0044] S4: The grouting mechanism is used to inject the slurry from the grouting hose 1 into the grouting flower tube 2. After the slurry fills the grouting hole 2, the injection is continued. The movement pattern of the observation rod 401 is sensed by the sensor. If the observation rod 401 moves back and forth, it indicates that there is leakage. The grouting is stopped until the cause of the leakage is found and repaired, and then the grouting is continued.

[0045] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the present invention.

Claims

1. A non-disturbance grouting and plugging device under dynamic water conditions, comprising: A grouting hose and a grouting flower tube connected to the grouting hose are characterized in that a fixing seat is installed on the grouting hose near the grouting outlet side, the diameter of the fixing seat is larger than the diameter of the grouting hose, the fixing seat is provided with an empty groove with an opening direction facing the slurry outlet side, an annular piston plate is installed in the empty groove for limiting sliding, the grouting hose is arranged through the annular piston plate, and the grouting hose is sealed and connected to the annular piston plate, the fixing seat is provided with a first air hole connected to the empty groove, an air bag connected to the empty groove through the first air hole is installed on the peripheral wall of the fixing seat, the grouting flower tube is provided with an installation cavity cooperating with the fixing seat, a sealing gasket is installed on the bottom wall of the installation cavity, the fixing seat is provided with a second air hole connected to the empty groove, the second air hole is connected to the outside of the fixing seat, a valve ball is connected to the second air hole through a first spring, and the valve ball can block the second air hole away from the empty groove end.

2. The non-disturbance grouting and plugging device under dynamic water conditions according to claim 1 is characterized in that: The grouting flower pipe is provided with a threaded section near the end of the grouting hose, and a connecting pipe is sleeved on the grouting hose. The connecting pipe is provided with a groove, and the inner wall of the groove is provided with a thread matching the threaded section. The connecting pipe is threadedly connected to the threaded section through the groove, and an elastic pad is installed on the bottom wall of the groove.

3. The non-disturbance grouting and plugging device under dynamic water conditions according to claim 2 is characterized in that: An elastic member is connected between the annular piston plate and the bottom wall of the hollow groove.

4. The non-disturbance grouting and plugging device under dynamic water conditions according to claim 3 is characterized in that: The grouting flower tube is provided with a plurality of mounting holes centered on the axial direction of the grouting flower tube, the mounting holes are connected with the mounting cavity, the grouting flower tube is provided with a limiting cavity connected with the mounting holes, the fixing seat is provided with a plurality of connecting rods corresponding to the mounting holes one by one, the side wall of the connecting rod is provided with a sliding groove, and a trapezoidal block cooperating with the limiting cavity is connected in the sliding groove through a second spring.

5. The non-disturbance grouting and plugging device under dynamic water conditions according to claim 4 is characterized in that: An observation rod is fixedly connected to the annular piston plate, and a mounting groove matching with the observation rod is provided on the side wall of the grouting hose. The observation rod is slidably connected in the mounting groove, and one end of the observation rod extends out of the fixing seat.

6. The grouting method for a non-disturbance grouting plugging device under dynamic water conditions according to claim 5, characterized in that: The following steps are involved: S1: Insert the grouting hose into the grouting flower tube so that the fixing seat corresponds to the installation cavity, and the connecting rod corresponds to the installation hole one by one, and pull the grouting hose to confirm whether the trapezoidal block and the limit cavity are matched. If the grouting hose is pulled to separate the grouting hose from the grouting flower tube, the trapezoidal block and the limit cavity are not matched, that is, the installation is not in place; if the grouting hose is pulled to drive the grouting flower tube to move, the trapezoidal block and the limit cavity are matched, that is, the installation is stable; S2: injecting air into the empty slot through the second air hole to expand the airbag and seal the installation cavity; S3: Rotate the connecting pipe so that the groove is threadedly connected with the threaded section; S4: The grouting mechanism injects the slurry from the grouting hose into the grouting flower tube. After the grouting hole is filled, continue to inject. The sensor senses the movement of the observation rod. If the observation rod moves back and forth, it means there is leakage, and the grouting is stopped. Continue grouting until the cause of the leakage is found and repaired.

Images