Double-tube double-grouting pre-consolidation construction device

Abstract

The present invention discloses a double-tube double-grouting pre-consolidation construction device, the core components of which include a sleeve valve pipe, a rubber plug grouting valve and a double-tube double-liquid grouting pump. The sleeve valve pipe is equipped with a rubber plug grouting valve and installed in a borehole. The upper part is connected to a hose above the ground through multiple sections of grouting steel pipes. The hose is further connected to a grouting pipe. The grouting pipe is connected to a double-tube double-liquid grouting pump via a three-way pipe. The pump is connected to two slurry barrels at the same time. The three-way pipe has a unique design, including a horizontal main pipe and a vertical branch pipe, with the first and second slurry inlet holes respectively, corresponding to the two outputs of the pump. The three-way pipe has a built-in three-way adjustment rotating block, which is semi-cylindrical and can rotate along the main pipe axis under electric drive to accurately control the flow direction of the slurry. The rotating block is equipped with a motor shaft mounting cylinder and a semi-circular support rod that fits the main pipe to ensure stability and flexibility. This design enables the grouting operation to flexibly switch or mix two slurries, improves construction efficiency and quality, and is particularly suitable for pre-consolidation treatment under complex geological conditions.

Description

Technical Field

[0001] The utility model relates to the technical field of pile foundation construction, in particular to a double-tube double-grouting pre-consolidation construction device. Background Art

[0002] Pre-consolidation construction technology is one of the key measures to ensure ground stability, reduce surface settlement and improve structural safety. The traditional single-tube grouting method is difficult to accurately control the slurry ratio and grouting pressure, which affects the reinforcement effect and construction efficiency. With the development of engineering technology, double-tube double-liquid grouting technology came into being. This technology can simultaneously inject two slurries with different properties or ratios. By accurately controlling the slurry mixing ratio and grouting process, it effectively improves the ground reinforcement effect and construction quality.

[0003] However, existing dual-liquid grouting equipment often has problems such as complex operation, uneven slurry mixing, and inconvenient grouting pressure control, especially when the grouting parameters need to be flexibly adjusted according to different geological conditions. For example, the lack of an effective grouting control mechanism makes it difficult to meet the needs of using different slurry ratios for different depths or areas within the same construction period, limiting the flexibility and efficiency of construction.

[0004] Therefore, the industry urgently needs a new type of construction device that can efficiently and accurately control the dual-liquid grouting process to meet the high requirements for pre-consolidation reinforcement of strata under complex geological conditions. Summary of the invention

[0005] The technical problem to be solved by the utility model is to provide a double-tube double-grouting pre-consolidation construction device, which can realize the function of intermittent alternating injection of different slurries, thereby improving operation efficiency and reducing construction costs while ensuring construction quality.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is: a double-tube double-grouting pre-consolidation construction device, comprising a sleeve valve pipe, a rubber plug grouting valve and a double-tube double-liquid grouting pump, wherein the rubber plug grouting valve is arranged in the sleeve valve pipe, the sleeve valve pipe is installed in the grouting hole, the upper end of the rubber plug grouting valve is connected to a plurality of sections of grouting steel pipes, the upper end of the grouting steel pipe is located above the ground, the upper end of the grouting steel pipe is connected to a hose, the hose is connected to one end of a slurry delivery pipe, the other end of the slurry delivery pipe is connected to a tee, the two input ends on the tee are respectively connected to the double-tube double-liquid grouting pump through pipelines, and the double-tube double-liquid grouting pump is also provided with two slurry inlet pipes connected to two slurry buckets;

[0007] The three-way pipe comprises a horizontal main pipe and a branch pipe vertically arranged on the main pipe, one end of the main pipe is provided with a first slurry inlet hole, the upper end of the branch pipe is provided with a second slurry inlet hole, and two connecting pipes between the three-way pipe and the double-tube double-liquid grouting pump are respectively connected to the first slurry inlet hole and the second slurry inlet hole;

[0008] A three-way adjusting rotating block is provided in the three-way pipe, the main body of the three-way adjusting rotating block is a semi-cylindrical structure, the three-way adjusting rotating block is in contact with the inner wall of the main pipe and extends to the output end of the branch pipe, and the three-way adjusting rotating block is driven by a motor arranged outside one end of the main pipe to realize axial rotation;

[0009] A motor shaft mounting cylinder is arranged in the middle of the plane of the three-way adjusting rotating block, and semicircular support rods are arranged at both ends of the plane of the three-way adjusting rotating block, and the semicircular support rods are fitted with the inner wall of the main pipe.

[0010] In a preferred solution, a plurality of groups of first grouting holes are provided in sections on the sleeve valve tube, and a single group of first grouting holes is evenly distributed in a circumferential direction along the side wall of the sleeve valve tube, and an adhesive tape covering the first grouting holes is provided on the outer wall of the sleeve valve tube.

[0011] In a preferred solution, a second grouting hole is provided on the side wall of the rubber plug grouting valve, the outer diameter of the rubber plug grouting valve is smaller than the inner diameter of the sleeve valve tube, and sealing rubber plugs with a diameter smaller than the inner diameter of the sleeve valve tube are provided at both ends of the rubber plug grouting valve.

[0012] In a preferred solution, the slurry delivery pipe is provided with a slurry diverter near the input end, and a plurality of diverter plates are provided in the slurry diverter. The diverter plates are L-shaped plates, and the turning edges of the diverter plates are arranged toward the input end of the slurry diverter.

[0013] In a preferred solution, a booster module for increasing the grouting pressure is provided at a position close to the output end of the slurry delivery pipe.

[0014] The double-tube double-grouting pre-consolidation construction device provided by the utility model has the following beneficial effects by adopting the above structure:

[0015] (1) The three-way regulating rotating block and motor drive system used in the device realize the precise intermittent injection control of two different slurries. By driving the three-way regulating rotating block driven by the motor, the grouting status of the main pipe and the branch pipe can be flexibly switched, ensuring the accurate supply of slurry under different stages or different geological requirements, thus improving the accuracy and efficiency of construction;

[0016] (2) The multiple groups of first grouting holes set inside the sleeve valve tube and the second grouting holes of the rubber plug grouting valve can ensure the uniform distribution of the slurry in the formation. Combined with the variable grouting pressure, it effectively enhances the pre-consolidation effect of the formation and reduces the surface settlement and structural safety hazards caused by uneven grouting;

[0017] (3) The design of the slurry diverter and booster module in the slurry delivery pipe not only ensures the uniform mixing of the slurry during transportation and avoids slurry stratification, but also can dynamically adjust the grouting pressure according to needs. In particular, when high-pressure grouting is required to overcome formation resistance, the booster module can significantly improve the grouting efficiency and penetration depth. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0020] Figure 2 It is a schematic diagram of the slurry delivery pipe and the three-way pipe structure of the utility model.

[0021] Figure 3 It is a schematic diagram of a half-section structure of a three-way pipe of the utility model.

[0022] Figure 4 It is a schematic diagram of the structure of the three-way regulating rotating block of the utility model.

[0023] In the figure: sleeve valve pipe 1, rubber plug grouting valve 2, grouting steel pipe 3, hose 4, slurry delivery pipe 5, tee pipe 6, main pipe 601, branch pipe 602, double-tube double-liquid grouting pump 7, slurry bucket 8, first grouting hole 9, adhesive tape 10, second grouting hole 11, sealing rubber plug 12, slurry diverter 13, booster module 14, diverter plate 15, three-way adjusting rotating block 16, motor 17, first slurry inlet hole 18, second slurry inlet hole 19, motor shaft mounting tube 20, semicircular support rod 21. DETAILED DESCRIPTION

[0024] Embodiment 1:

[0025] like Figure 1-4 A double-tube double-grouting pre-consolidation construction device is provided, comprising a sleeve valve pipe 1, a rubber plug grouting valve 2 and a double-tube double-liquid grouting pump 7, wherein the rubber plug grouting valve 2 is arranged in the sleeve valve pipe 1, the sleeve valve pipe 1 is installed in the grouting hole, the upper end of the rubber plug grouting valve 2 is connected to a multi-section grouting steel pipe 3, the upper end of the grouting steel pipe 3 is located above the ground, the upper end of the grouting steel pipe 3 is connected to a hose 4, the hose 4 is connected to one end of a slurry delivery pipe 5, the other end of the slurry delivery pipe 5 is connected to a tee pipe 6, the two input ends on the tee pipe 6 are respectively connected to the double-tube double-liquid grouting pump 7 through pipelines, and the double-tube double-liquid grouting pump 7 is also provided with two slurry inlet pipes connected to two slurry buckets 8;

[0026] The three-way pipe 6 includes a horizontal main pipe 601 and a branch pipe 602 vertically arranged on the main pipe 601. The main pipe 601 has a first slurry inlet hole 18 at one end, and a second slurry inlet hole 19 at the upper end of the branch pipe 602. The two connecting pipes between the three-way pipe 6 and the double-tube double-liquid grouting pump 7 are connected to the first slurry inlet hole 18 and the second slurry inlet hole 19 respectively.

[0027] A three-way adjusting rotating block 16 is provided inside the three-way pipe 6. The main body of the three-way adjusting rotating block 16 is a semi-cylindrical structure. The three-way adjusting rotating block 16 is in contact with the inner wall of the main pipe 601 and extends to the output end of the branch pipe 602. The three-way adjusting rotating block 16 is driven by a motor 17 arranged outside one end of the main pipe 601 to realize axial rotation.

[0028] A motor shaft mounting cylinder 20 is provided in the middle of the plane of the three-way adjusting rotating block 16 , and semicircular support rods 21 are provided at both ends of the plane of the three-way adjusting rotating block 16 , and the semicircular support rods 21 are in contact with the inner wall of the main pipe 601 .

[0029] In a preferred embodiment, a plurality of groups of first grouting holes 9 are provided in sections on the sleeve valve tube 1, and a single group of first grouting holes 9 are evenly distributed in a circumferential direction along the side wall of the sleeve valve tube 1, and a tape 10 covering the first grouting holes 9 is provided on the outer wall of the sleeve valve tube 1.

[0030] In a preferred embodiment, a second grouting hole 11 is provided on the side wall of the rubber plug grouting valve 2, the outer diameter of the rubber plug grouting valve 2 is smaller than the inner diameter of the sleeve valve tube 1, and sealing rubber plugs (12) with a diameter smaller than the inner diameter of the sleeve valve tube (1) are provided at both ends of the rubber plug grouting valve (2).

[0031] In a preferred embodiment, the slurry delivery pipe 5 is provided with a slurry diverter 13 near the input end, and a plurality of diverter plates 15 are provided in the slurry diverter 13. The diverter plates 15 are L-shaped plates, and the turning edges of the diverter plates 15 are arranged toward the input end of the slurry diverter 13.

[0032] In a preferred solution, the slurry delivery pipe 5 is provided with a booster module 14 for increasing the grouting pressure at a position close to the output end.

[0033] The present invention discloses a double-tube double-grouting pre-consolidation construction device. During grouting construction, two slurries (cement slurry and water glass slurry) mixed and prepared in a slurry barrel 8 are injected into the main pipe 601 and the branch pipe 602 of the three-way pipe 6 through the double-tube double-liquid grouting pump 7. The motor 17 rotates continuously and blocks the main pipe 601 and the branch pipe 602 respectively. When the main pipe 601 is blocked, the branch pipe 602 is opened. When the branch pipe 602 is blocked, the main pipe 601 is opened, thereby realizing the switching and transportation of the two slurries and the mixing of the two slurries in the slurry delivery pipeline. In order to improve the slurry mixing effect, the slurry diverter 13 is provided to control the slurry to be diverted to both sides and fully mixed through the diverter plate 15 therein. Considering that the slurry diverter 13 will reduce the grouting pressure of the slurry, a booster module 14 is added to keep the grouting pressure at a set value to avoid a drop in the grouting pressure.

[0034] After mixing and grouting, the slurry flows to the rubber plug grouting valve 2 through the grouting steel pipe 3, and the grouting is completed through the grouting holes at different positions of the sleeve valve pipe 1. When performing grouting operations at different positions, the three-way adjustment rotating block 16 can be adjusted to achieve different proportions of the two slurries and improve the grouting effect.

Claims

1. A double-tube double-grouting pre-consolidation construction device, characterized in that: It comprises a sleeve valve pipe (1), a rubber plug grouting valve (2) and a double-tube double-liquid grouting pump (7), wherein the rubber plug grouting valve (2) is arranged in the sleeve valve pipe (1), the sleeve valve pipe (1) is installed in the grouting hole, the upper end of the rubber plug grouting valve (2) is connected to a multi-section grouting steel pipe (3), the upper end of the grouting steel pipe (3) is located above the ground, the upper end of the grouting steel pipe (3) is connected to a hose (4), the hose (4) is connected to one end of a slurry delivery pipe (5), the other end of the slurry delivery pipe (5) is connected to a tee pipe (6), the two input ends on the tee pipe (6) are respectively connected to the double-tube double-liquid grouting pump (7) through pipelines, and the double-tube double-liquid grouting pump (7) is also provided with two slurry inlet pipes connected to two slurry buckets (8); The three-way pipe (6) comprises a horizontal main pipe (601) and a branch pipe (602) vertically arranged on the main pipe (601); a first slurry inlet hole (18) is provided at one end of the main pipe (601); a second slurry inlet hole (19) is provided at the upper end of the branch pipe (602); and two connecting pipes between the three-way pipe (6) and the double-tube double-liquid grouting pump (7) are respectively connected to the first slurry inlet hole (18) and the second slurry inlet hole (19); A three-way adjusting rotating block (16) is provided inside the three-way pipe (6); the main body of the three-way adjusting rotating block (16) is a semi-cylindrical structure; the three-way adjusting rotating block (16) is in contact with the inner wall of the main pipe (601) and extends to the output end of the branch pipe (602); the three-way adjusting rotating block (16) is driven by a motor (17) arranged outside one end of the main pipe (601) to achieve axial rotation; A motor shaft mounting cylinder (20) is provided in the middle of the plane of the three-way adjustable rotating block (16), and semicircular support rods (21) are provided at both ends of the plane of the three-way adjustable rotating block (16), and the semicircular support rods (21) are in contact with the inner wall of the main pipe (601).

2. A double-tube double-grouting pre-consolidation construction device according to claim 1, characterized in that: The sleeve valve tube (1) is provided with a plurality of groups of first grouting holes (9) in sections, and a single group of first grouting holes (9) is evenly distributed in a circumferential direction along the side wall of the sleeve valve tube (1), and an adhesive tape (10) covering the first grouting holes (9) is provided on the outer wall of the sleeve valve tube (1).

3. A double-tube double-grouting pre-consolidation construction device according to claim 1, characterized in that: A second grouting hole (11) is provided on the side wall of the rubber plug grouting valve (2); the outer diameter of the rubber plug grouting valve (2) is smaller than the inner diameter of the sleeve valve tube (1); and sealing rubber plugs (12) having a diameter smaller than the inner diameter of the sleeve valve tube (1) are provided at both ends of the rubber plug grouting valve (2).

4. A double-tube double-grouting pre-consolidation construction device according to claim 1, characterized in that: The slurry delivery pipe (5) is provided with a slurry diverter (13) at a position close to the input end, and a plurality of diverter plates (15) are provided in the slurry diverter (13). The diverter plates (15) are L-shaped plates, and the turning edges of the diverter plates (15) are arranged toward the input end of the slurry diverter (13).

5. A double-tube double-grouting pre-consolidation construction device according to claim 4, characterized in that: The grout delivery pipe (5) is provided with a pressure boosting module (14) for increasing the grouting pressure at a position close to the output end.

Images