Construction device and method for humidifying collapsible loess

Abstract

The present invention provides a construction device and method for humidifying collapsible loess, which belongs to the technical field of water-dissipated collapsible loess. The device and method include a water injection component, which includes a pipe that matches the aperture of the water injection hole. The pipe is located in one of the water injection holes, and the pipe is vertically arranged. The upper end of the pipe is fixedly connected to an end cover, and the end cover is connected to a vertical connecting pipe. The upper end of the connecting pipe is horizontally connected to a water pipe. The present invention solves the problem that the traditional water immersion method cannot accurately control the water content in the loess, making the operation difficult and inconvenient for construction personnel to implement. The device and method solve the problem that the traditional water immersion method cannot accurately control the water content in the loess, making the operation difficult and inconvenient for construction personnel to implement. The device and method reduce the construction difficulty, facilitate construction personnel to implement, and improve construction efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of water-dissipated collapsible loess, and particularly relates to a construction device and method for moistening collapsible loess. Background Art

[0002] Collapsible loess is widely distributed in my country. It has low moisture content and high porosity, and when not wetted, it generally has high strength and low compressibility. However, when wetted, the soil structure rapidly deteriorates, resulting in significant additional subsidence and a rapid decrease in strength. The subsidence of collapsible loess after being soaked in water can cause the downward force generated by the negative friction on the pile side in pile foundation projects, potentially leading to pile damage and uneven subsidence, seriously affecting the safety of buildings. To prevent loess subsidence, water-immersion backfill is generally used to compact the loess foundation.

[0003] However, when using the water immersion backfill method to carry out settlement, it is necessary to control the water content in the soil. If there is too much water, it will cause the backfill soil phenomenon, but if there is too little water, the settlement effect cannot be achieved. Therefore, the traditional water immersion backfill method is not only difficult to operate, affecting construction efficiency, but also the operation process is complicated and inconvenient for construction personnel to implement. Therefore, a construction device and method for humidifying collapsible loess is needed to solve this problem. Summary of the Invention

[0004] The purpose of the present invention is to provide a construction device and method for humidifying collapsible loess.

[0005] To achieve the above-mentioned purpose, the present invention provides a construction device for humidifying collapsible loess, including a water injection assembly, wherein the water injection assembly includes a pipe that matches the aperture of the water injection hole, the pipe is located in one of the water injection holes, the pipe is vertically arranged, the upper end of the pipe is fixedly connected to an end cover, the end cover is connected to a vertical connecting pipe, and the upper end of the connecting pipe is horizontally connected to a water pipe.

[0006] Furthermore, a plurality of the water injection holes are arranged in a plum blossom shape on the loess layer.

[0007] Furthermore, the diameter of the end cover is larger than the diameter of the pipe, and the end cover is placed on the upper surface of the loess layer.

[0008] Furthermore, a pressure gauge is provided on the connecting pipe.

[0009] Furthermore, an air valve is provided at the upper end of the connecting pipe, and the air valve is located above the water pipe.

[0010] Furthermore, a valve is provided on the water pipe.

[0011] Furthermore, a laser rangefinder is provided on the lower surface of the end cover.

[0012] A construction method for humidifying collapsible loess, comprising the following steps:

[0013] S1: A number of water injection holes are opened in a plum blossom pattern on the loess layer, with the spacing between adjacent water injection holes ranging from 1.5 to 2 meters;

[0014] S2: After assembling the water injection assembly, place the pipe in the water injection assembly into one of the water injection holes, seal the end cap on the pipe on the water injection hole, then open the valve on the water pipe, use the high-pressure pump to transfer water from the water pipe to the connecting pipe, and then inject water from the connecting pipe through the pipe into the water injection hole;

[0015] S3: When water is injected into the selected water injection hole, the pressure in the water injection hole can be monitored in real time through the pressure gauge, and then the air valve can be used to adjust the pressure according to the detected pressure value;

[0016] S4: When water is injected into the selected water injection hole, the water is injected to a depth of 1 meter each time through the layered backfill method, and then the water injection is stopped, and then the loess layer in the loess layer is allowed to absorb the water. After the loess layer absorbs the water, the selected water injection hole is filled with loess to a depth of 1 meter. After the filling is completed, water is continued to be injected into the selected water injection hole, and the water injection and loess filling are repeated until the selected water injection hole is filled;

[0017] S5: In step S4, when the water injection hole is filled with 1 meter of water and 1 meter of loess, real-time monitoring can be performed using a laser rangefinder;

[0018] S6: When the selected water injection hole is filled, select another water injection hole that is not adjacent to the previous water injection hole, and repeat step S4 until all water injection holes are filled.

[0019] The advantages of the present invention are: the present invention solves the problem that the traditional water immersion method cannot accurately control the water content in the loess, making the operation difficult and inconvenient for construction personnel to implement, thereby reducing the construction difficulty, facilitating the implementation of construction personnel, and improving construction efficiency.

[0020] The present invention is described in detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the local structure of the present invention.

[0022] Figure 2 It is a top view of the loess layer structure of the present invention.

[0023] Figure 3 This is a construction flow chart for reducing collapsible loess by water according to the present invention.

[0024] Explanation of the accompanying symbols: 1. Loess layer; 2. Water injection assembly; 21. Pipeline; 22. End cover; 23. Connecting pipe; 24. Water pipe; 3. Water injection hole; 4. Pressure gauge; 5. Air valve; 6. Valve; 7. Laser rangefinder. DETAILED DESCRIPTION

[0025] In order to further illustrate the technical means and effects adopted by the present invention to achieve the predetermined purpose, the specific implementation methods, structural features and effects of the present invention are described in detail below with reference to the accompanying drawings and examples.

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "aligned", "overlap", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying 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.

[0028] The terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, features specified as "first" or "second" may explicitly or implicitly include one or more of such features; and in the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0029] Example 1

[0030] This embodiment provides Figures 1 to 3 The construction device shown is for humidifying collapsible loess, including a water injection assembly 2. A plurality of vertical water injection holes 3 are opened on the upper surface of the loess layer 1. The water injection assembly 2 includes a pipe 21 that matches the aperture of the water injection hole 3. The pipe 21 is located in one of the water injection holes 3. The pipe 21 is vertically arranged. The upper end of the pipe 21 is fixedly connected to an end cover 22. The end cover 22 is connected to a vertical connecting pipe 23. The upper end of the connecting pipe 23 is horizontally connected to a water pipe 24.

[0031] Furthermore, a plurality of water injection holes 3 are arranged in a plum blossom shape on the loess layer 1 , and the spacing between adjacent water injection holes 3 is 1.5-2 meters.

[0032] By arranging the water injection holes 3 in a plum blossom shape on the loess layer 1 and with a spacing of 1.5-2 meters between adjacent water injection holes 3 , it is possible to prevent excessive water from affecting the surrounding adjacent water injection holes 3 .

[0033] Furthermore, the diameter of the end cover 22 is larger than the diameter of the pipe 21 , and the end cover 22 is placed on the upper surface of the loess layer 1 .

[0034] By setting the diameter of the end cover 22 to be larger than the diameter of the pipe 21 , the end cover 22 can play a supporting and sealing role when placed on the upper surface of the loess layer 1 .

[0035] Furthermore, a pressure gauge 4 is provided on the connecting pipe 23 .

[0036] By setting up the pressure gauge 4, the pressure in the water injection hole 3 can be monitored in real time, so that the construction personnel can adjust the water injection amount of the water injection hole 3 in time according to the situation, thereby reducing the difficulty of construction and improving construction efficiency.

[0037] Furthermore, an air valve 5 is provided at the upper end of the connecting pipe 23 , and the air valve 5 is located above the water pipe 24 .

[0038] By providing the air valve 5 , construction workers can adjust the pressure in the water injection hole 3 in a timely manner according to the pressure conditions in the water injection hole 3 , thereby reducing the difficulty of construction and improving construction efficiency.

[0039] Furthermore, a valve 6 is provided on the water delivery pipe 24 .

[0040] The valve 6 is provided to facilitate users to adjust the water injection amount of the water pipe 24 in a timely manner.

[0041] Furthermore, a laser rangefinder 7 is provided on the lower surface of the end cover 22 , and the laser rangefinder 7 is inside the pipe 21 .

[0042] The laser rangefinder 7 can be set up to facilitate construction workers to accurately measure the amount of water injected into the water injection hole 3 and the amount of loess filled, thereby improving the accuracy of water immersion backfill construction, reducing construction difficulty and improving construction efficiency.

[0043] A construction method for humidifying collapsible loess, comprising the following steps:

[0044] S1: A plurality of water injection holes 3 are opened in a plum blossom pattern on the loess layer 1, with the spacing between adjacent water injection holes 3 ranging from 1.5 to 2 meters;

[0045] S2: After assembling the water injection assembly 2, place the pipe 21 in the water injection assembly 2 into one of the water injection holes 3, and seal the end cap 22 on the pipe 21 over the water injection hole 3. Then, open the valve 6 on the water delivery pipe 24, and use the high-pressure pump to deliver water from the water delivery pipe 24 to the connecting pipe 23. Then, water is injected from the connecting pipe 23 through the pipe 21 into the water injection hole 3.

[0046] S3: When water is injected into the selected water injection hole 3, the pressure in the water injection hole 3 can be monitored in real time by the pressure gauge 4, and then the pressure can be adjusted by the air valve 5 according to the detected pressure value;

[0047] S4: When water is injected into the selected water injection hole 3, the water is injected into the selected water injection hole 3 by backfilling in layers, and the water injection is stopped after the loess in the loess layer 1 absorbs the water. After the loess layer 1 absorbs the water, the selected water injection hole 3 is filled with loess to a depth of 1 meter. After the filling is completed, the selected water injection hole 3 is continued to be injected with water, and the water injection and loess filling are repeated until the selected water injection hole 3 is filled.

[0048] S5: In step S4, when the water injection hole 3 is filled with 1 meter of water and 1 meter of loess, real-time monitoring can be performed by the laser rangefinder 7;

[0049] S6: After the selected water injection hole 3 is filled, another water injection hole 3 that is not adjacent to the previous water injection hole 3 is selected, and step S4 is repeated until all water injection holes 3 are filled.

[0050] Working process:

[0051] When in use, first open a plurality of water injection holes 3 in a plum blossom shape on the loess layer 1, so that the spacing between adjacent water injection holes 3 is in the range of 1.5-2 meters, then assemble the water injection assembly 2, and then install the pipe 21 in the water injection assembly 2 in any one of the water injection holes 3, so that the end cover 22 on the pipe 21 covers the water injection hole 3 to play a sealing role, then open the valve 6 on the water pipe 24, and use a high-pressure pump to transport water from the water pipe 24 to the connecting pipe 23, and finally inject it from the connecting pipe 23 through the pipe 21 into the water injection hole 3. When water is injected into the selected water injection hole 3, the pressure in the water injection hole 3 can be monitored in real time by the pressure gauge 4, and then the air valve 5 can be used to adjust the pressure according to the detected pressure value;

[0052] When water is injected into the selected water injection hole 3, the layered backfill method is used, and the water injection is stopped after the water is injected into the loess layer 1 to absorb the water. After the loess layer 1 absorbs the water, the selected water injection hole 3 is filled with loess to a depth of 1 meter. In particular, when the water injection hole 3 is injected with 1 meter of water and filled with 1 meter of loess each time, the laser rangefinder 7 can be used for real-time monitoring. After filling, the selected water injection hole 3 is continued to be injected with water, and the water injection and loess filling are repeated until the selected water injection hole 3 is filled.

[0053] When the selected water injection hole 3 is filled, select another water injection hole 3 that is not adjacent to the previous water injection hole 3, and repeat the above steps until all water injection holes 3 are filled.

[0054] In summary, the present invention solves the problem that the traditional water immersion method cannot accurately control the water content in loess, making the operation difficult and inconvenient for construction personnel to implement. This reduces the construction difficulty, facilitates the implementation of construction personnel, and improves construction efficiency.

[0055] The above is a further detailed description of the present invention in conjunction with specific preferred embodiments, and the specific implementation of the present invention should not be considered to be limited to these descriptions. For those skilled in the art of the present invention, without departing from the concept of the present invention, several simple deductions or substitutions can be made, which should be considered to fall within the scope of protection of the present invention.

Claims

1. A construction method for humidifying collapsible loess, characterized by: The steps include: S1: A plurality of water injection holes (3) are opened in a plum blossom shape on the loess layer (1), with the spacing between adjacent water injection holes (3) ranging from 1.5 to 2 meters; S2: After assembling the water injection assembly (2), place the pipe (21) in the water injection assembly (2) into one of the water injection holes (3), and seal the end cap (22) on the pipe (21) on the water injection hole (3). Then, open the valve (6) on the water delivery pipe (24), and use a high-pressure pump to deliver water from the water delivery pipe (24) to the connecting pipe (23). Then, water is injected from the connecting pipe (23) through the pipe (21) into the water injection hole (3). S3: When water is injected into the selected water injection hole (3), the pressure in the water injection hole (3) can be monitored in real time through the pressure gauge (4), and then the pressure is adjusted through the air valve (5) according to the detected pressure value; S4: When water is injected into the selected water injection hole (3), the water is injected to a depth of 1 meter each time by a layered backfilling method, and then the water injection is stopped, and then the loess in the loess layer (1) is allowed to absorb the water. After the loess layer (1) absorbs the water, the selected water injection hole (3) is filled with loess to a depth of 1 meter. After the filling is completed, water is continued to be injected into the selected water injection hole (3). In this way, the water injection and loess filling are repeated until the selected water injection hole (3) is filled. S5: In step S4, when 1 meter of water is injected into the water injection hole (3) and 1 meter of loess is filled, real-time monitoring can be performed using the laser rangefinder (7); S6: After the selected water injection hole (3) is filled, another water injection hole (3) that is not adjacent to the previous water injection hole (3) is selected, and step S4 is repeated until all water injection holes (3) are filled.

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