Water jet drilling device for foundation treatment

Abstract

The utility model relates to a water jet drilling device for foundation treatment, which comprises a sleeve valve pipe, an opening arranged at the bottom end of the sleeve valve pipe and a water jet mechanism inserted in the sleeve valve pipe, and a water jet nozzle of the water jet mechanism and the opening are coaxially arranged. Compared with a traditional geological drilling machine of a subway project, the self-drilling hole forming of the sleeve valve pipe is achieved through the water jet cutter, the difficulty that the working face of a construction site is tense is effectively overcome, hole drilling and sleeve valve pipe inserting are completed synchronously, operation steps are simplified, grouting construction efficiency is improved, and compared with direct water jet cutter hole drilling, the grouting construction efficiency is improved. The grouting hole drilling device can form holes at a time, drilled grouting holes are even in hole diameter of each depth, small in fluctuation and free of repeated repairing, the situation that sleeve valve pipes are difficult to insert due to the fact that the hole diameters of the grouting holes of each depth are not even is avoided, and the grouting hole drilling device is suitable for standardized operation.

Description

Technical Field

[0001] The utility model belongs to the field of drilling equipment, and in particular relates to a water jet drilling device for foundation treatment. Background Art

[0002] During the operation of rail transit, the foundation (the foundation includes the overlying soil layer 9 and the stratum to be reinforced 8) is affected by the changes in the stratum, water level, surrounding environment and the structural defects of the structure itself, and is prone to uneven foundation settlement, water leakage and other diseases. This requires timely repair of the foundation, and drilling is inevitably required during the repair process. At present, geological drilling rigs are usually used for drilling, which not only have high operating costs but also large size. When used in the narrow space of the rail transit tunnel, the construction is greatly restricted.

[0003] To solve the above problems, our construction personnel have tried to use water jets to drill holes in the process of rail transit foundation treatment, and found that the grouting holes formed by water jets have poor uniformity and straightness of the holes, which will make it difficult to insert the subsequent sleeve valve pipes. In order to solve the problem of difficulty in inserting sleeve valve pipes, it is necessary to repeatedly cut and repair the grouting holes, which makes it difficult to form standardized operations for water jet drilling, and the hole-making time is difficult to estimate, which is not conducive to rapid construction on site. At the same time, repeated cutting and repairing of grouting holes also increases the disturbance to the stratum, destroying the strength structure of the stratum itself, which is contrary to the goal of grouting reinforcement. It is precisely because of the above unfavorable factors that the drilling construction of water jets in rail transit foundation treatment is limited. Utility Model Content

[0004] The purpose of the utility model is to overcome the defects of traditional drilling equipment in the prior art, such as large size, unsuitability for drilling construction on narrow working surfaces, poor quality of grouting holes caused by water jets, and the need for repeated repairs, making standardized construction difficult, and to provide a water jet drilling device for foundation treatment.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] A water jet drilling device for foundation treatment comprises a sleeve valve tube, an opening arranged at the bottom end of the sleeve valve tube, and a water jet mechanism inserted in the sleeve valve tube, wherein a water jet port of the water jet mechanism is coaxially arranged with the opening.

[0007] As a further technical solution, the water jet mechanism is coaxially arranged with the sleeve valve tube.

[0008] As a further technical solution, the water jet mechanism includes a drainage pipe, a cutter head arranged at the bottom of the drainage pipe, a water inlet is arranged at the top of the drainage pipe, and a water spray port is arranged at the bottom of the cutter head.

[0009] As a further technical solution, the drainage pipe is connected to a water source through a high-pressure water pipeline, and a high-pressure water pump and a valve are provided on the high-pressure water pipeline.

[0010] As a further technical solution, the drainage tube outer sleeve is provided with at least two positioning plugs.

[0011] As a further technical solution, limiting members are respectively provided on both sides of the positioning plug.

[0012] As a further technical solution, the limiting member adopts a positioning clamp.

[0013] As a further technical solution, the positioning embolism is a positioning embolism made of elastic material.

[0014] As a further technical solution, a joint is provided at the top of the drainage tube after it extends out of the sleeve valve tube.

[0015] As a further technical solution, the cutter head of the cutter head mechanism adopts a conical cutter head.

[0016] As a further technical solution, the diameter of the water spray port is smaller than the diameter of the opening.

[0017] As a further technical solution, the sleeve valve tube includes an outer sleeve, an injection pipe and a guide cap which are arranged in sequence from top to bottom. A plurality of injection holes are arranged along the circumference of the injection pipe, and a rubber ring covering the injection holes is arranged on the outer sleeve of the injection pipe; the guide cap is a conical guide cap, and the opening is arranged at the bottom of the conical guide cap.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] The utility model arranges a water jet mechanism in a sleeve valve tube to form a drilling device. When in use, the insertion of the sleeve valve tube and the drilling of the water jet mechanism are carried out simultaneously. Compared with the geological drilling rigs used in traditional subway projects, the utility model utilizes the water jet mechanism to realize the self-drilling of the sleeve valve tube, effectively overcoming the dilemma of tight working surface on the construction site, and the drilling and the insertion of the sleeve valve tube are completed simultaneously, which simplifies the operation steps and improves the grouting construction efficiency. Compared with direct drilling by the water jet mechanism, the utility model can form a hole in one time, and the grouting holes drilled have uniform apertures at all depths, small fluctuations, good linearity, and no repeated repairs are required. There is no difficulty in inserting the sleeve valve tube due to poor aperture uniformity and linearity of the grouting holes. The utility model is suitable for standardized operations, and the utility model does not disturb the formation and does not damage the strength structure of the formation itself. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of an embodiment of the utility model;

[0021] Figure 2 A three-dimensional diagram of a sleeve valve tube in one embodiment of the utility model;

[0022] Figure 3 A three-dimensional diagram of an injection pipe in one embodiment of the utility model;

[0023] Figure 4 A three-dimensional diagram of a water jet mechanism in one embodiment of the utility model;

[0024] Figure 5 This is a state diagram of drilling in one embodiment of the utility model.

[0025] In the figure: 1. sleeve valve tube, 11. opening, 12. outer sleeve, 13. injection pipe, 14. guide cap, 15. grouting hole, 16. rubber ring, 2. water jet mechanism, 21. drainage pipe, 22. knife head, 23. water spray outlet, 24. water inlet, 25. positioning plug, 26. limiter; 27. joint, 3. high-pressure water pipeline, 4. water source, 5. high-pressure water pump, 6. valve, 7. grouting hole, 8. stratum to be reinforced, 9. overlying soil layer. DETAILED DESCRIPTION

[0026] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of 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.

[0027] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] The present invention will be described in further detail below with reference to the accompanying drawings.

[0030] Example 1

[0031] like Figure 1-4 An embodiment of the utility model of a water jet drilling device for foundation treatment is shown, comprising a sleeve valve tube 1, an opening 11 arranged at the bottom end of the sleeve valve tube 1, and a water jet mechanism 2 inserted into the sleeve valve tube 1, wherein the water jet port 23 of the water jet mechanism 2 is coaxially arranged with the opening 11. The utility model arranges a water jet in the sleeve valve tube 1 to form a drilling device. When in use, the sleeve valve tube 1 is inserted and the water jet mechanism 2 is drilled simultaneously. Compared with the traditional subway project foundation treatment drilling equipment, the water jet is used to realize the self-drilling of the sleeve valve tube 1 (without relying on external drilling equipment, the drilling can be completed by itself), which effectively overcomes the dilemma of tight working surface on the construction site, and the drilling and the insertion of the sleeve valve tube 1 are completed simultaneously, which simplifies the operation steps and improves the grouting construction efficiency. Compared with direct drilling by the water jet mechanism, the utility model can drill holes in one time, and the grouting holes drilled have uniform apertures at all depths, small fluctuations, good linearity, and no repeated repairs are required. There is no difficulty in inserting the sleeve valve tube due to poor aperture uniformity and linearity of the grouting holes. It is suitable for standardized operations, and the utility model will not disturb the formation and will not destroy the strength structure of the formation itself.

[0032] As an embodiment of the utility model of a water jet drilling device for foundation treatment, the water jet mechanism 2 is coaxially arranged with the sleeve valve tube 1, which can facilitate the water jetting and prevent the sleeve valve tube 1 from affecting the water jetting path.

[0033] As an embodiment of a water jet drilling device for foundation treatment of the utility model, the water jet mechanism 2 includes a drainage pipe 21, a cutter head 22 arranged at the bottom of the drainage pipe 21, a water inlet 24 is arranged at the top of the drainage pipe 21, and a water spray port 23 is arranged at the bottom of the cutter head 22.

[0034] As an embodiment of the water jet drilling device for foundation treatment of the utility model, the drainage pipe 21 is connected to a water source 4 through a high-pressure water pipeline 3, and the high-pressure water pipeline is provided with a high-pressure water pump 5 and a valve 6. When working, the high-pressure water jet pressure used by the water jet mechanism is greater than or equal to 30MPa.

[0035] As an embodiment of the water jet drilling device for foundation treatment of the utility model, at least two positioning plugs 25 are provided on the outer surface of the drainage tube 21. The positioning plugs 25 can play a centering role, ensuring that the sleeve valve tube 1 and the water jet mechanism 2 are coaxially arranged, and avoiding the water jet shaking in the sleeve valve tube 1 during the drilling process to affect the drilling quality.

[0036] As an embodiment of the water jet drilling device for foundation treatment of the utility model, limit members 26 are respectively provided on both sides of the positioning plug 25 to prevent the positioning plug 25 from moving up and down along the drainage tube 21 .

[0037] As an embodiment of the water jet drilling device for foundation treatment of the utility model, the limiting member 26 is a positioning clamp, and the two ends of the positioning plug 25 are respectively abutted against the corresponding positioning clamps.

[0038] As an embodiment of the water jet drilling device for foundation treatment of the utility model, the positioning plug 25 is annular and made of elastic material.

[0039] As an embodiment of a sleeve valve tube 1 grouting tool set of the present invention, the inner diameter of the positioning plug 25 is slightly smaller than the outer diameter of the drainage tube 21, and the outer diameter of the positioning plug 25 is the same as the inner diameter of the outer sleeve 12 of the sleeve valve tube 1;

[0040] As an embodiment of the utility model of a water jet drilling device for foundation treatment, a joint 27 is provided after the top of the drainage pipe 21 extends out of the sleeve valve pipe 1 for connecting with a high-pressure water pipeline 3 connected to a water source 4.

[0041] As an embodiment of a water jet drilling device for foundation treatment of the utility model, the sleeve valve tube 1 includes an outer sleeve 12, an injection pipe 13 and a guide cap 14 which are arranged in sequence from top to bottom, and a plurality of grouting holes 15 are arranged along the circumference of the injection pipe 13, and a rubber ring 16 covering the grouting holes 15 is arranged on the outer sleeve of the injection pipe 13; the guide cap 14 is a conical guide cap, and the opening 11 is arranged at the bottom of the conical guide cap.

[0042] As an embodiment of the water jet drilling device for foundation treatment of the utility model, the cutter head 22 of the cutter head mechanism is a conical cutter head.

[0043] As an embodiment of the water jet drilling device for foundation treatment of the utility model, the jet pipe 13 is composed of one section or multiple sections. When the jet pipe 13 is composed of multiple sections, adjacent jet pipes are connected by threads.

[0044] As an embodiment of the water jet drilling device for foundation treatment of the utility model, the diameter of the water jet port 23 is smaller than the diameter of the opening 11 .

[0045] When the utility model is used, the water jet mechanism 2 is inserted into the sleeve valve tube 1 and coaxially arranged to form a water jet drilling device for foundation treatment, and then, Figure 5As shown, the water jet drilling device for foundation treatment is moved to the position where the hole is to be drilled, the drilling angle is adjusted according to the design plan, the water inlet 24 of the water jet mechanism 2 is connected to the high-pressure water pipe 3, the valve 6 of the high-pressure water pipe 3 is opened, and the water jet drilling device is moved according to the designed position of the grouting hole 7, and the foundation soil is gradually cut to drill a hole. When the bottom of the stratum 8 to be reinforced is drilled, the drilling is completed and the grouting hole 7 is formed. The water jet mechanism 2 is pulled out from the sleeve valve tube 1, and the sleeve valve tube 1 is still retained in the grouting hole 7.

[0046] The utility model arranges the water jet mechanism 2 in the sleeve valve tube 1 to form a drilling device. When in use, the insertion of the sleeve valve tube 1 and the drilling of the water jet mechanism 2 are carried out simultaneously. Compared with the traditional geological drilling rigs of subway projects, the utility model uses the water jet to realize the self-drilling of the sleeve valve tube 1, effectively overcoming the dilemma of tight working surface on the construction site, and the drilling and the insertion of the sleeve valve tube 1 are completed simultaneously, which simplifies the operation steps and improves the grouting construction efficiency. Compared with direct drilling by the water jet mechanism, the utility model can form a hole in one time, and the grouting holes drilled have uniform apertures at all depths, small fluctuations, good linearity, and no repeated repairs are required. The sleeve valve tube will not be difficult to insert due to poor aperture uniformity and linearity of the grouting holes. It is suitable for standardized operations, and the utility model will not disturb the formation and will not destroy the strength structure of the formation itself.

[0047] The above-mentioned embodiments are only preferred embodiments of the present invention, and are not exhaustive of the feasible implementations of the present invention. For those skilled in the art, any obvious changes made to the present invention without departing from the principle and spirit of the present invention should be considered to be included in the scope of protection of the claims of the present invention.

Claims

1. A water jet drilling device for foundation treatment, characterized in that: The invention comprises a sleeve valve tube (1), an opening (11) arranged at the bottom end of the sleeve valve tube (1), and a water jet mechanism (2) inserted into the sleeve valve tube (1), wherein a water jet port (23) of the water jet mechanism (2) is coaxially arranged with the opening (11).

2. A water jet drilling device for foundation treatment according to claim 1, characterized in that: The water jet mechanism (2) is coaxially arranged with the sleeve valve tube (1).

3. The water jet drilling device for foundation treatment according to claim 1, characterized in that: The water jet mechanism (2) comprises a drainage pipe (21), a cutter head (22) arranged at the bottom of the drainage pipe (21), a water inlet (24) being arranged at the top of the drainage pipe (21), and a water spray port (23) being arranged at the bottom of the cutter head (22).

4. The water jet drilling device for foundation treatment according to claim 3 is characterized in that: The drainage pipe (21) is connected to a water source (4) via a high-pressure water pipeline (3), and a high-pressure water pump (5) and a valve (6) are provided on the high-pressure water pipeline (3).

5. The water jet drilling device for foundation treatment according to claim 3, characterized in that: The drainage tube (21) is provided with at least two positioning plugs (25) on its outer sleeve.

6. The water jet drilling device for foundation treatment according to claim 5, characterized in that: Limiting members (26) are respectively arranged on both sides of the positioning plug (25).

7. The water jet drilling device for foundation treatment according to claim 5, characterized in that: The positioning embolism (25) is a positioning embolism made of elastic material.

8. The water jet drilling device for foundation treatment according to claim 3, characterized in that: A joint (27) is provided at the top of the drainage tube (21) after it extends out of the sleeve valve tube (1).

9. The water jet drilling device for foundation treatment according to claim 3, characterized in that: The diameter of the water spray port is smaller than the diameter of the opening (11).

10. The water jet drilling device for foundation treatment according to claim 1, characterized in that: The sleeve valve tube (1) comprises an outer sleeve (12), an injection tube (13) and a guide cap (14) which are arranged in sequence from top to bottom; a plurality of injection holes (15) are arranged along the circumference of the injection tube (13); and a rubber ring (16) covering the injection holes (15) is arranged on the outer sleeve of the injection tube (13); The guide cap (14) is a conical guide cap, and the opening (11) is arranged at the bottom of the conical guide cap.

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