Drill bit for high jet grouting process construction and RJP process construction

Abstract

The utility model discloses a drill bit for high jet grouting process construction and RJP process construction, and relates to the technical field of drilling jet grouting. A drill bit for high jet grouting technology construction and RJP technology construction comprises a first jet section, a second jet section and a third jet section, the connecting section is fixedly connected to the first spraying section; the second spraying section is fixedly connected to the connecting section; the drilling section is fixedly connected to the bottom side of the second injection section; the first nozzle is fixedly connected to the side wall of the first spraying section; the second nozzle is fixedly connected to the side wall of the second spraying section; the air injection assembly is connected to the first injection section and the second injection section; the air injection assembly comprises a first air nozzle and a second air nozzle, the first air nozzle is fixedly connected to the first injection section and located in the first air nozzle, and the second air nozzle is fixedly connected to the second injection section; the diameter of the jet grouting pile sprayed by the device is obviously larger than that of a triple-pipe jet grouting pile in the prior art, and the influence on the surrounding environment is greatly reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of drilling and jet grouting, and specifically relates to a drill bit used for high jet grouting and RJP process construction. Background Art

[0002] During the drilling process, with the substantial development of national infrastructure projects, the construction scale of railways, highways, airports, docks and high-rise buildings has continued to expand, and the quality requirements for foundation treatment, foundation pit support and foundation pit water stopping have continued to increase. As for the technology of rotary jet pile, it has the advantages of simple equipment, convenient construction, fast speed, material saving, high efficiency, low cost, simple operation and wide application range, and is widely used in many infrastructure fields.

[0003] In the prior art, high-pressure jetting construction technology or RJP jetting construction technology is generally used when jetting. The high-pressure jetting method is to use a drill to drill a hole to the required depth and then use a high-pressure pulse system to spray chemical slurry (usually cement slurry accelerating coagulation agent) around the nozzle installed at the bottom of the drill rod. At the same time, the drill rod is rotated and lifted. The high-pressure jet destroys the soil structure and mixes with the chemical slurry, and forms a round body after cementation and hardening; RJP super jetting method is a new method, which uses triple or quadruple pipes to transport water, gas, and slurry to jet the hole.

[0004] However, during the operation of the jet grouting construction in the prior art, the diameter of the jet grouting pile is generally affected by the jet grouting drill bit and the jet grouting pressure, and the diameter size of the jet grouting pile needs to be further improved. Utility Model Content

[0005] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a drill bit for high-speed jetting construction and RJP construction that can overcome the above problems or at least partially solve the above problems.

[0006] In order to solve the above technical problems, the basic concept of the technical solution adopted by the utility model is: a drill bit for high-speed jetting process construction and RJP process construction, comprising:

[0007] The first injection section;

[0008] A connecting section, fixedly connected to the first injection section;

[0009] A second injection section is fixedly connected to the connecting section;

[0010] A drilling section fixedly connected to the bottom side of the second injection section;

[0011] A first nozzle, fixedly connected to a side wall of the first injection section;

[0012] A second nozzle is fixedly connected to the side wall of the second injection section;

[0013] The jet assembly is connected to the first jet section and the second jet section.

[0014] Further, the jet assembly includes a first jet nozzle and a second jet nozzle, the first jet nozzle is fixedly connected to the first jet section, and the first nozzle is located in the first jet nozzle, the second jet nozzle is fixedly connected to the second jet section, and the second nozzle is located in the second jet nozzle.

[0015] Furthermore, the jet assembly further includes an air delivery pipe, and the air delivery pipe is connected to the first jet nozzle and the second jet nozzle.

[0016] Furthermore, a first material delivery pipe is fixedly connected to the first injection section, and the first material delivery pipe is communicated with the first nozzle.

[0017] Furthermore, a second material delivery pipe is fixedly connected to the second injection section, and the second material delivery pipe is communicated with the second nozzle.

[0018] Furthermore, the first injection section, the second injection section and the connecting section are each provided with a connecting pipe, and the first injection section, the connecting section and the second injection section are connected through the connecting pipe.

[0019] After adopting the above technical scheme, the utility model has the following beneficial effects compared with the prior art: the diameter of the jet grouting piles sprayed out by the device of the utility model is significantly larger than the triple-tube jet grouting piles in the prior art, and the impact on the surrounding environment is greatly reduced.

[0020] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In the attached picture:

[0022] Figure 1 It is a schematic diagram of the structure of the utility model during spraying;

[0023] Figure 2 This is a front view structural schematic diagram of the utility model;

[0024] Figure 3 It is a side view structural schematic diagram of the utility model;

[0025] Figure 4 It is a schematic diagram of the internal structure of the utility model.

[0026] In the figure: 1, first injection section; 101, first nozzle; 102, air delivery pipe; 103, first material delivery pipe; 104, second material delivery pipe; 105, connecting pipe; 2, connecting section; 3, second injection section; 301, second nozzle; 4, drilling section; 5, first air nozzle; 6, second air nozzle. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. The following embodiments are used to illustrate the utility model but are not used to limit the scope of the utility model.

[0028] Embodiment 1:

[0029] Reference Figure 1-Figure 4 , a drill bit for high-speed jetting process construction and RJP process construction, comprising:

[0030] First injection section 1;

[0031] A connecting section 2, fixedly connected to the first injection section 1;

[0032] The second injection section 3 is fixedly connected to the connecting section 2;

[0033] The drilling section 4 is fixedly connected to the bottom side of the second injection section 3;

[0034] The first nozzle 101 is fixedly connected to the side wall of the first injection section 1;

[0035] The second nozzle 301 is fixedly connected to the side wall of the second injection section 3;

[0036] The jetting assembly is connected to the first jetting section 1 and the second jetting section 3.

[0037] At least one group of second nozzles 301 is provided.

[0038] The jet assembly includes a first jet nozzle 5 and a second jet nozzle 6 . The first jet nozzle 5 is fixedly connected to the first jet section 1 , and the first nozzle 101 is located in the first jet nozzle 5 . The second jet nozzle 6 is fixedly connected to the second jet section 3 , and the second nozzle 301 is located in the second jet nozzle 6 .

[0039] The jet assembly further includes an air delivery pipe 102 , which is connected to the first jet nozzle 5 and the second jet nozzle 6 .

[0040] A first material delivery pipe 103 is fixedly connected to the first injection section 1 , and the first material delivery pipe 103 is communicated with the first nozzle 101 .

[0041] A second material delivery pipe 104 is fixedly connected to the second injection section 3 , and the second material delivery pipe 104 is in communication with the second nozzle 301 .

[0042] The first injection section 1 , the second injection section 3 and the connecting section 2 are all provided with a connecting pipe 105 , and the first injection section 1 , the connecting section 2 and the second injection section 3 are connected through the connecting pipe 105 .

[0043] Reference Figure 1-Figure 4 , drill the drill bit into the ground, drill downward through the drilling section 4, and after drilling to a certain depth;

[0044] The first high-pressure medium is transported through the first delivery pipe 103, and the first high-pressure medium is ejected through the first nozzle 101 of the first injection section 1, and the ejected first high-pressure medium can impact on the inner wall of the aperture;

[0045] The second high-pressure medium is transported through the second delivery pipe 104, and the transported second high-pressure medium is sprayed through the second nozzle 301 on the second spraying section 3, and the sprayed second high-pressure medium can be shot on the inner wall of the aperture;

[0046] It should be noted that while the first nozzle 101 sprays the first high-pressure medium, the air pipe 102 also inputs high-pressure gas, which is transported to the first air nozzle 5 and sprayed out, which can effectively expand the diameter of the jet-jet pile.

[0047] It should also be noted that while the second nozzle 301 is spraying the second high-pressure medium, the air pipe 102 will also deliver high-pressure gas, which will be delivered to the high-pressure gas and ejected through the second air nozzle 6. At this time, the ejected second high-pressure medium and the air flow surrounding it will perform a secondary impact and cut the soil, forming a larger diameter and evenly stirred rotary spray body.

[0048] The diameter of the jet grouting piles sprayed by the device is significantly larger than that of the triple-tube jet grouting piles in the prior art, and the impact on the surrounding environment is greatly reduced.

[0049] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment, it is not intended to limit the present invention.

Claims

1. A drill bit for high-speed jetting and RJP process construction, characterized in that: include: A first injection section (1); A connecting section (2) fixedly connected to the first injection section (1); A second injection section (3) is fixedly connected to the connection section (2); A drilling section (4) fixedly connected to the bottom side of the second injection section (3); A first nozzle (101) is fixedly connected to a side wall of the first injection section (1); A second nozzle (301) is fixedly connected to a side wall of the second injection section (3); The jet assembly is connected to the first jet section (1) and the second jet section (3).

2. A drill bit for high-speed jetting and RJP process construction according to claim 1, characterized in that: The jet assembly comprises a first jet nozzle (5) and a second jet nozzle (6), wherein the first jet nozzle (5) is fixedly connected to a first jet section (1), and the first nozzle (101) is located in the first jet nozzle (5), and the second jet nozzle (6) is fixedly connected to a second jet section (3), and the second nozzle (301) is located in the second jet nozzle (6).

3. A drill bit for high-speed jetting and RJP process construction according to claim 2, characterized in that: The jet assembly further comprises an air delivery pipe (102), wherein the air delivery pipe (102) is in communication with the first jet nozzle (5) and the second jet nozzle (6).

4. A drill bit for high-speed jetting and RJP process construction according to claim 1, characterized in that: A first material delivery pipe (103) is fixedly connected to the first injection section (1), and the first material delivery pipe (103) is in communication with the first nozzle (101).

5. A drill bit for high-speed jetting and RJP process construction according to claim 1, characterized in that: A second material delivery pipe (104) is fixedly connected to the second injection section (3), and the second material delivery pipe (104) is in communication with the second nozzle (301).

6. A drill bit for high-speed jetting and RJP process construction according to claim 4, characterized in that: The first injection section (1), the second injection section (3) and the connecting section (2) are all provided with a connecting pipe (105); the first injection section (1), the connecting section (2) and the second injection section (3) are connected via the connecting pipe (105).

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