Improved high-pressure grouting orifice plug sealing device

Abstract

The utility model discloses an improved high-pressure grouting orifice plug sealing device which comprises a three-way pipe used during grouting, an upper opening of the three-way pipe is connected with a slurry inlet pipe, a right opening of the three-way pipe is connected with a slurry return round pipe, a lower opening of the three-way pipe is connected with a slurry return pipe, and a threaded groove is formed in the side face of the top end of the slurry return pipe. By means of the grout inlet pipe, the grout return pipe and the grout return round pipe, accidents of hurting people due to the fact that the grouting plug loosens in the high-pressure grouting process, grout splashes and the grouting plug falls off are avoided, meanwhile, pure pressure type grouting of a steel lining reserved grouting pipe in the prior art is changed into small circulation type grouting, and the grouting efficiency is improved. Furthermore, the sealing device is further provided with a pressure gauge, pressure monitoring in the construction process is facilitated, the grouting pressure can be observed, regulated and controlled at any time on an orifice grouting loop, the optimal grouting effect is achieved, and the grouting efficiency is improved. And therefore, the sealing device achieves the effects of preventing slurry leakage and achieving uniform filling.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel grouting, in particular to an improved high-pressure grouting hole plug sealing device. Background Art

[0002] In the construction of modern infrastructure, tunnel engineering plays a vital role in the fields of transportation, water conservancy, energy, etc. with its unique advantages. As an important part of tunnel engineering, tunnel steel lining is of great significance for ensuring the stability of tunnel structure, preventing leakage and extending the service life of tunnel. However, due to the complex and changeable geological environment of the tunnel, there are often gaps in the contact surface between the steel lining and the surrounding rock, which need to be treated by high-pressure consolidation grouting technology.

[0003] The core of high-pressure consolidation grouting technology is to effectively inject slurry into the gap between the steel lining and the surrounding rock to achieve the purpose of filling the gap and improving the integrity of the structure. However, traditional grouting methods often have problems such as slurry leakage and uneven grouting, which affect the grouting effect. Therefore, developing a new type of orifice sealer to improve the quality and efficiency of grouting has become an urgent problem to be solved in the current tunnel engineering construction. To this end, we have conducted in-depth research on the construction technology of high-pressure consolidation grouting of tunnel steel lining surrounding rock, and combined with engineering practice experience, proposed an improved high-pressure grouting orifice plug sealing device. Utility Model Content

[0004] The utility model aims to provide an improved high-pressure grouting hole plug sealing device to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an improved high-pressure grouting hole plug closing device, comprising a three-way pipe used for grouting, the upper end of the three-way pipe is connected to a slurry inlet pipe, the right end of the three-way pipe is connected to a slurry return circular pipe, the lower end of the three-way pipe is connected to a slurry return pipe, and a threaded groove is provided on the top side of the slurry return pipe, an oil pan is provided on the surface of the slurry return circular pipe, and a pressure gauge is provided on the upper surface of the oil pan, a ball valve is provided on the front of the slurry return pipeline, a pressure plate is threadedly connected to the top side of the slurry return pipe, a handle is fixedly connected to the side of the pressure plate, a plane bearing is provided on the lower surface of the pressure plate, and a pressure cylinder is provided on the lower surface of the plane bearing, a rubber ball is provided on the lower surface of the pressure cylinder, a gasket is provided on the inner wall of the rubber ball, and the shape of the gasket is annular, and a limiting rod is provided on the inner wall of the gasket.

[0006] On the basis of the above technical solution, the present invention can also be improved as follows.

[0007] Preferably, the bottom end of the slurry inlet pipe passes through the upper opening of the tee pipe and extends to the bottom of the return pipe, and the bottom end of the slurry inlet pipe is located in the middle of the return pipe. A stabilizing rod is provided between the side surface of the bottom end of the slurry inlet pipe and the inner wall of the return pipe. By providing the tee pipe and the stabilizing rod, it is convenient to stabilize the slurry inlet pipe in the return pipe so that it can stably inject grout into the hole.

[0008] Preferably, the upper surface of the inner ring of the plane bearing is fixedly connected to the lower surface of the pressure plate, and the pressure plate is annular, and the lower surface of the outer ring of the plane bearing is fixedly connected to the upper surface of the pressure cylinder. By setting the plane bearing, the pressure plate can be rotated, while the pressure cylinder can rotate or not, and it can be adjusted according to the actual construction situation. The rotating pressure plate can move up and down on the side of the return slurry pipe.

[0009] Preferably, the rubber ball is cylindrical in shape and is sleeved on the side of the slurry return pipe. Four gaskets are vertically arranged on the inner wall of the rubber ball, and springs are arranged between the four gaskets. By arranging the gaskets, the rubber ball can be easily made to reach a normal cylindrical shape and easily put into the hole. At the same time, by arranging the springs between the gaskets, the rubber ball can be elastically returned to its original shape when the pressure cylinder rises.

[0010] Preferably, the inner wall of the gasket is slidably connected to the side of the return slurry pipe, and the side of the return slurry pipe is provided with a limit groove which moves vertically with the limit rod. By arranging the gasket and the limit rod, the rubber ball can be squeezed and expanded vertically to prevent the rubber ball from twisting. Among the four gaskets, the top and bottom two gaskets are fixedly connected to the inner top wall and inner bottom wall of the rubber ball respectively.

[0011] Preferably, the inner wall of the pressure cylinder is slidably connected to the side of the return slurry pipe, and the lower surface of the pressure cylinder is fixedly connected to the upper surface of the rubber ball through a gasket. By setting the pressure cylinder, it is convenient to squeeze the rubber ball through the pressure cylinder when the pressure plate is pressed down, thereby increasing the depth of the hole into which the rubber ball is lowered, thereby causing the rubber ball to expand and seal the gap between the hole and the pipe, thereby facilitating subsequent grouting and filling.

[0012] Beneficial Effects

[0013] Compared with the prior art, the technical solution of this application has the following beneficial technical effects:

[0014] The utility model adopts the grouting pipe, grouting return pipe and grouting circular pipe to prevent accidents of grouting plugs from loosening during high-pressure grouting, causing slurry splashing and grouting plugs falling off, thereby causing injuries. At the same time, the pure pressure grouting of the previous steel liner reserved grouting pipe is replaced by a small circulation grouting, so that the slurry can flow down to the bottom of the hole with the grouting pipe to better combine with the cracks of the surrounding rock. Furthermore, the closing device is also equipped with a pressure gauge to facilitate pressure monitoring during construction. The grouting pressure can be observed and adjusted at any time in the hole mouth grouting circuit to achieve the best grouting effect, so that the closing device can prevent slurry leakage and ensure uniform grouting.

[0015] The device optimizes the grouting process by designing a reasonable orifice closer structure, allowing the slurry to be injected into the gap more evenly and effectively, thereby improving the stability and durability of the tunnel structure. This device not only overcomes the shortcomings of traditional grouting methods, but also has the advantages of simple operation, high construction efficiency and low cost. Its application will help improve the quality and technical level of tunnel engineering construction and provide strong support for the sustainable development of tunnel engineering. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the front section structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the front view structure of the utility model;

[0018] Figure 3 for Figure 1 Enlarged structural diagram at A in the middle.

[0019] In the figure: 1. Tee pipe; 2. Slurry inlet pipe; 3. Slurry return round pipe; 4. Slurry return pipe; 5. Threaded groove; 6. Oil pan; 7. Pressure gauge; 8. Ball valve; 9. Pressure plate; 10. Handle; 11. Plane bearing; 12. Pressure cylinder; 13. Rubber ball; 14. Gasket; 15. Limit rod. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-3The utility model provides a technical solution: an improved high-pressure grouting hole plug closing device, comprising a tee pipe 1 used during grouting, the upper end of the tee pipe 1 is connected to a slurry inlet pipe 2, the right end of the tee pipe 1 is connected to a slurry return circular pipe 3, the lower end of the tee pipe 1 is connected to a slurry return pipe 4, the bottom end of the slurry inlet pipe 2 passes through the upper end of the tee pipe 1 and extends to the bottom of the slurry return pipe 4, and the bottom end of the slurry inlet pipe 2 is located in the middle of the slurry return pipe 4, and a stabilizing rod is arranged between the side surface of the bottom end of the slurry inlet pipe 2 and the inner wall of the slurry return pipe 4. By arranging the tee pipe 1 and the stabilizing rod, it is convenient to stabilize the slurry inlet pipe 2 in the slurry return pipe 4, so that it can stably grout into the hole.

[0022] A threaded groove 5 is provided on the top side of the return slurry pipe 4, an oil pan 6 is provided on the surface of the return slurry circular pipe 3, and a pressure gauge 7 is provided on the upper surface of the oil pan 6, a ball valve 8 is provided on the front of the return slurry pipe 4, a pressure plate 9 is threadedly connected to the top side of the return slurry pipe 4, a handle 10 is fixedly connected to the side of the pressure plate 9, a plane bearing 11 is provided on the lower surface of the pressure plate 9, and a pressure cylinder 12 is provided on the lower surface of the plane bearing 11, the upper surface of the inner ring of the plane bearing 11 is fixedly connected to the lower surface of the pressure plate 9, and the pressure plate 9 is annular, and the lower surface of the outer ring of the plane bearing 11 is fixedly connected to the upper surface of the pressure cylinder 12. By providing the plane bearing 11, it is convenient to make the pressure plate 9 rotate, and the pressure cylinder 12 can rotate or not, and it can be adjusted according to the actual construction situation. The rotating pressure plate 9 can move up and down on the side of the return slurry pipe 4.

[0023] A rubber ball 13 is provided on the lower surface of the pressure cylinder 12, and the inner wall of the pressure cylinder 12 is slidably connected to the side of the return slurry pipe 4. The lower surface of the pressure cylinder 12 is fixedly connected to the upper surface of the rubber ball 13 through a gasket 14. By providing the pressure cylinder 12, it is convenient to squeeze the rubber ball 13 through the pressure cylinder 12 when the pressure plate 9 is pressed down, thereby increasing the depth of the hole into which the rubber ball 13 is lowered, and then the rubber ball 13 expands to seal the gap between the hole and the pipe, which is convenient for subsequent grouting and filling.

[0024] The inner wall of the rubber ball 13 is provided with a gasket 14, and the shape of the gasket 14 is annular. The shape of the rubber ball 13 is cylindrical, and the rubber ball 13 is sleeved on the side of the return slurry pipe 4. Four gaskets 14 are vertically provided on the inner wall of the rubber ball 13, and springs are provided between the four gaskets 14. By providing the gaskets 14, it is convenient to make the rubber ball 13 reach a normal cylindrical shape and to put it into the hole. At the same time, by providing springs between the gaskets 14, when the pressure cylinder 12 rises, the rubber ball 13 can be elastically returned to its original shape.

[0025] A limiting rod 15 is provided on the inner wall of the gasket 14, and the inner wall of the gasket 14 is slidably connected to the side of the return slurry pipe 4, and a limiting groove which moves vertically with the limiting rod 15 is opened on the side of the return slurry pipe 4. By arranging the gasket 14 and the limiting rod 15, it is convenient to make the rubber ball 13 can be vertically squeezed and expanded to prevent the rubber ball 13 from twisting. Among the four gaskets 14, the top and bottom two gaskets 14 are fixedly connected to the inner top wall and the inner bottom wall of the rubber ball 13 respectively, and the sides of the two annular gaskets 14 in the middle are not connected to the inner wall of the rubber ball 13. The two gaskets 14 in the middle play a supporting role of connecting the upper and lower parts, and the inner ring of the gasket 14 on the inner bottom wall of the rubber ball 13 is fixedly connected to the side of the return slurry pipe 4.

[0026] In this embodiment, the grouting pipe 2, the grouting return pipe 4 and the grouting return circular pipe 3 are provided to avoid accidents causing injuries due to the loosening of the grouting plug during the high-pressure grouting process, splashing of slurry and falling off of the grouting plug. At the same time, the pure pressure grouting of the reserved grouting pipe of the steel liner is changed to a small circulation grouting, so that the slurry can flow down to the bottom of the hole with the grouting pipe to better combine with the cracks of the surrounding rock. Furthermore, the closing device is also equipped with a pressure gauge 7 to facilitate pressure monitoring during the construction process. The grouting pressure can be observed and adjusted at any time in the hole mouth grouting circuit to achieve the best grouting effect, so that the closing device can prevent slurry leakage and ensure uniform grouting.

[0027] Working principle: When in use, since the improved high-pressure grouting hole plug closure device utilizes the elasticity and toughness of the rubber column, the inner wall expands under the pressure of the pressure plate 9 to hold the outer tube of the grouting plug tightly, and the outer wall is close to the surrounding rock, forming a strong friction force. Under the high-pressure consolidation grouting state, the plug of the closure device will not slide or fall off, and the slurry reaches the bottom of the hole through the slurry inlet pipe 2 and the grouting pipe. A part of the slurry seeps through the surrounding rock cracks, and the excess slurry returns to the slurry collection barrel through the slurry return pipe 4 and the slurry return circular pipe 3; a pressure gauge 7 is installed on the loop, and a small circulation system is used to adjust the grouting pressure. Grouting with a small circulation system can achieve a better bonding effect between the surrounding rock and the cement slurry.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An improved high-pressure grouting hole plug sealing device, characterized in that: The invention comprises a three-way pipe (1) used in grouting, wherein the upper end of the three-way pipe (1) is connected to a slurry inlet pipe (2), the right end of the three-way pipe (1) is connected to a slurry return pipe (3), the lower end of the three-way pipe (1) is connected to a slurry return pipe (4), and the top side of the slurry return pipe (4) is provided with a thread groove (5), the surface of the slurry return pipe (3) is provided with an oil pan (6), and the upper surface of the oil pan (6) is provided with a pressure gauge (7), the front of the slurry return pipe (4) is provided with a ball valve (8), and the slurry return pipe (4) is provided with a pressure gauge (7). The top side of (4) is threadedly connected to a pressure plate (9), the side of the pressure plate (9) is fixedly connected to a handle (10), the lower surface of the pressure plate (9) is provided with a plane bearing (11), and the lower surface of the plane bearing (11) is provided with a pressure cylinder (12), the lower surface of the pressure cylinder (12) is provided with a rubber ball (13), the inner wall of the rubber ball (13) is provided with a gasket (14), and the shape of the gasket (14) is annular, and the inner wall of the gasket (14) is provided with a limit rod (15).

2. An improved high-pressure grouting hole plug sealing device according to claim 1, characterized in that: The bottom end of the pulp inlet pipe (2) passes through the upper opening of the tee pipe (1) and extends to the bottom of the pulp return pipe (4), and the bottom end of the pulp inlet pipe (2) is located in the middle of the pulp return pipe (4), and a stabilizing rod is provided between the side surface of the bottom end of the pulp inlet pipe (2) and the inner wall of the pulp return pipe (4).

3. The improved high-pressure grouting hole plug sealing device according to claim 1 is characterized in that: The upper surface of the inner ring of the plane bearing (11) is fixedly connected to the lower surface of the pressure plate (9), and the pressure plate (9) is annular, and the lower surface of the outer ring of the plane bearing (11) is fixedly connected to the upper surface of the pressure cylinder (12).

4. The improved high-pressure grouting hole plug sealing device according to claim 1 is characterized in that: The rubber ball (13) is cylindrical in shape and is sleeved on the side of the pulp return pipe (4). Four gaskets (14) are vertically arranged on the inner wall of the rubber ball (13), and springs are arranged between the four gaskets (14).

5. The improved high-pressure grouting hole plug sealing device according to claim 1 is characterized in that: The inner wall of the gasket (14) is slidably connected to the side of the return pulp pipe (4), and the side of the return pulp pipe (4) is provided with a limiting groove which moves vertically with the limiting rod (15).

6. The improved high-pressure grouting hole plug sealing device according to claim 1, characterized in that: The inner wall of the pressing cylinder (12) is slidably connected to the side of the pulp return pipe (4), and the lower surface of the pressing cylinder (12) is fixedly connected to the upper surface of the rubber ball (13) via a gasket (14).

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