CN117845874B - Pressurized control water injection system for low-water-content collapsible loess field - Google Patents
Pressurized control water injection system for low-water-content collapsible loess field Download PDFInfo
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- CN117845874B CN117845874B CN202410260195.7A CN202410260195A CN117845874B CN 117845874 B CN117845874 B CN 117845874B CN 202410260195 A CN202410260195 A CN 202410260195A CN 117845874 B CN117845874 B CN 117845874B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 178
- 238000002347 injection Methods 0.000 title claims abstract description 71
- 239000007924 injection Substances 0.000 title claims abstract description 71
- 239000002689 soil Substances 0.000 claims abstract description 79
- 238000012544 monitoring process Methods 0.000 claims abstract description 14
- 238000007789 sealing Methods 0.000 claims description 5
- 238000010276 construction Methods 0.000 abstract description 11
- 239000010410 layer Substances 0.000 description 48
- 238000000034 method Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000007405 data analysis Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention discloses a pressurization control water injection system for a collapsible loess field with low water content, which belongs to the field of loess field water injection, and comprises a water injection system for layered quantitative water injection, a monitoring system for monitoring the water content of a soil layer and a control system for controlling the water injection quantity, wherein the water injection system comprises an outer cylinder with a plurality of water injection holes, a plurality of sections of inner cylinders are arranged in the outer cylinder, a water storage chamber is arranged in the inner cylinder, a pull rod group is arranged in the water storage chamber and connected with a pull rod controller, the pull rod group comprises a plurality of pull rods with different diameters and different lengths, and the bottom ends of the pull rods are connected with the inner cylinders through rubber pistons; the control system comprises a computer terminal, and the monitoring system comprises a soil moisture sensor and a soil moisture analyzer. The pressurization control water injection system for the collapsible loess field with low water content can solve the problem of layered water content in foundation treatment, provide field soil conditions meeting the requirements for later construction operation, has strong practicability and can be popularized and used.
Description
Technical Field
The invention relates to the technical field of loess field water injection, in particular to a pressurized control water injection system for a low-water-content collapsible loess field.
Background
In the construction engineering, when collapsible loess is encountered, foundation treatment is needed to eliminate the collapsible loess, so that the construction safety is ensured. When the foundation treatment is performed on a collapsible loess field with low water content, the compaction effect of the soil is poor because the field has low water content, and the collapsibility of the soil cannot be completely eliminated. When the soil body is soaked by water, the soil body structure is quickly destroyed under the action of external force to generate obvious additional deformation, which is favorable for the foundation treatment to a certain extent. So that the foundation treatment effect can be improved by properly increasing the water content of the field.
The collapsible loess area building standard (GB 50025-2018) suggests that: if the water content of the foundation soil is lower than 12%, the foundation soil should be humidified by on-site humidification water injection. However, when the water content of the site changes sharply or exceeds the plastic limit, the soil of the site is easy to sink in a large area, and the water content is too large, so that the site is muddy and the machine cannot be constructed. Meanwhile, the problem of a large number of problems exists in actual construction, the water content of each layer in foundation soil is different, the total water injection amount is easy to control, the water injection position is not easy to control, the water injection of a target soil layer cannot be accurately controlled, and the dry and wet conditions still exist. Not only can the construction requirements not be met, but also a great deal of water resource waste is caused. Meanwhile, after water injection, natural diffusion waits for the water migration to be stable for a long time, and when the construction period is short, the problem is still to be further optimized. Therefore, in the pre-humidification construction process of the collapsible loess field with low water content, it is necessary to design a system capable of precisely controlling water injection under pressurization.
Disclosure of Invention
In order to solve the problems, the invention provides a pressurization control water injection system for a collapsible loess field with low water content, solves the problem of layered water content in foundation treatment, provides field soil conditions meeting requirements for later construction operation, and has strong practicability.
The invention provides a pressurizing control water injection system for a collapsible loess field with low water content, which comprises a water injection system for layered quantitative water injection, a monitoring system for monitoring the water content of a soil layer and a control system for controlling the water injection amount, wherein the water injection system comprises an outer cylinder with a plurality of water injection holes, a plurality of inner cylinders are arranged in the outer cylinder, a water storage chamber is arranged in the inner cylinder, a pull rod group is arranged in the water storage chamber and connected with a pull rod controller, the pull rod group comprises a plurality of pull rods with different diameters and different lengths, and the bottom ends of the pull rods are all connected with the inner cylinders in a sealing manner through rubber pistons; the control system comprises a computer terminal, and the monitoring system comprises a soil moisture sensor and a soil moisture analyzer.
Preferably, the diameter of the tie rod at the upper part is larger than the diameter of the tie rod at the lower part.
Preferably, the length of the tie rod at the upper part is smaller than the length of the tie rod at the lower part.
Preferably, the pull rod at the lower part is sleeved in the pull rod at the upper part, and the top of the pull rod is connected with the pull rod controller.
Preferably, a gap for water outflow is arranged between the adjacent inner cylinders which are arranged up and down.
Preferably, the bottom of each pull rod is connected with the center of the rubber piston through a bearing, and the rubber piston is arranged at the bottom of the inner wall of each inner cylinder and is in sliding sealing connection with the inner wall of each inner cylinder.
Preferably, the rubber piston is provided with a water through hole, a blade valve for water on-off is arranged at the water through hole, and the blade valve is connected with the pull rod.
Preferably, the top end of the outer cylinder is connected with a water inlet pipe, and the water inlet pipe is provided with a water meter and a valve for controlling the total water injection amount.
Preferably, the computer terminal is connected with the water injection system, and the computer terminal is connected with the soil moisture analyzer through the data line, and the soil moisture analyzer is connected with the soil moisture sensor arranged in different soil layers.
The invention has the following beneficial effects:
1. The invention has simple structure, and can realize layered pressurized quantitative water injection of foundation soil to be treated according to specific working conditions, so that soil layers with different water contents can reach optimal water contents;
2. According to the invention, the rotation and the stretching of the pull rod are used for controlling the opening of the blade valve and the up-and-down movement of the rubber piston, so that the water injection quantity and the water injection pressure of each layer are controlled, the quantitative water injection is carried out, and the operation is more convenient;
3. the water injection device injects water in a pressurizing mode, so that moisture quickly permeates into a soil layer, and the construction period is shortened;
4. According to the invention, the change of the water content of each soil layer is monitored and controlled in real time by adopting a soil moisture sensor and a soil moisture analyzer, so that the accurate control of the water content after water injection is realized;
5. all the systems of the invention are finally controlled by the computer terminal, thereby realizing accurate control and better meeting the construction requirements.
The technical scheme of the invention is further described in detail through the drawings and the embodiments.
Drawings
FIG. 1 is a schematic diagram of a system in accordance with an embodiment of the present invention;
FIG. 2 is a schematic diagram of a water injection system according to an embodiment of the present invention;
FIG. 3 is a schematic cross-sectional view of a water injection system according to an embodiment of the present invention;
FIG. 4 is a schematic cross-sectional view of a water storage chamber according to an embodiment of the present invention;
FIG. 5 is a schematic longitudinal cross-sectional view of a rubber piston according to an embodiment of the present invention;
fig. 6 is a schematic cross-sectional view of a rubber piston according to an embodiment of the present invention.
1. A pull rod controller; 2. a water meter; 3. a water inlet pipe; 4. a valve; 5. an outer cylinder; 6. a first pull rod; 7. an inner cylinder; 8. a water storage chamber; 9. a rubber piston; 10. a vane valve; 11. a second pull rod; 12. a third pull rod; 13. a water injection hole; 14. a bearing; 15. a water through hole; 16. a soil moisture sensor; 17. a data line; 18. a soil moisture analyzer; 19. a computer terminal; 20. a void; 21. a soil layer I; 22. a soil layer II; 23. and a soil layer III.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application more apparent, the embodiments of the present application will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the detailed description and specific examples, while indicating the embodiment of the application, are intended for purposes of illustration only and are not intended to limit the scope of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application. Examples of the embodiments are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements throughout or elements having like or similar functionality.
It should be noted that the terms "comprises" and "comprising," along with any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or server that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed or inherent to such process, method, article, or apparatus, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present invention, it should be noted that, directions or positional relationships indicated by terms such as "upper", "lower", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or those that are conventionally put in use, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present invention.
In the description of the present invention, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
As shown in FIG. 1, the pressurized control water injection system for the collapsible loess field with low water content, disclosed by the invention, comprises a water injection system, a monitoring system and a control system, and can be used for quickly and accurately controlling water injection in a layering manner. The water injection system comprises a water inlet pipe 3, a water storage chamber 8, a pull rod, a blade valve 10 and other components, and can quantitatively inject water in a layered manner so as to inject water into a soil layer. The monitoring system comprises a soil moisture sensor 16 and a soil moisture analyzer 18, and can detect whether the soil layer reaches the target moisture content in real time and feed the soil layer back to the control system in time. The control system comprises a pull rod controller 1, a water meter 2, a valve 4, a computer terminal 19 and the like, and mainly controls the injection of water quantity and the mechanical movement of the device, so that water can quickly and accurately infiltrate into a target soil layer through pressurization.
As shown in fig. 2 and 3, the water injection system comprises an outer cylinder 5 with a plurality of water injection holes 13, a plurality of sections of inner cylinders 7 are arranged in the outer cylinder 5, and a water storage chamber 8 is arranged inside the inner cylinders 7. A gap 20 for water outflow is arranged between the adjacent inner cylinders 7 arranged up and down. The water storage chamber 8 is internally provided with a pull rod group which comprises a plurality of pull rods with different diameters and different lengths. The diameter of the pull rod at the upper part is larger than that of the pull rod at the lower part, the length of the pull rod at the upper part is smaller than that of the pull rod at the lower part, the pull rod at the lower part is sleeved in the pull rod at the upper part, and the top of the pull rod is connected with the pull rod controller 1.
The pull rod group in the embodiment consists of a first pull rod 6, a second pull rod 11 and a third pull rod 12. The tops of the first pull rod 6, the second pull rod 11 and the third pull rod 12 are connected with the pull rod controller 1, and the pull rod controller 1 is used for centrally controlling rotation and stretching of each pull rod and has a limiting function. The diameter of the first pull rod 6 is larger than that of the second pull rod 11 and larger than that of the third pull rod 12, the diameter of the first pull rod 6 is smaller than that of the second pull rod 11 and smaller than that of the third pull rod 12, the second pull rod 11 is sleeved in the first pull rod 6, and the third pull rod 12 is sleeved in the second pull rod 11. The outer cylinder 5 is arranged in the soil layer, the soil layer is divided into a first soil layer 21, a second soil layer 22 and a third soil layer 23 from top to bottom, the first pull rod 6 is positioned at the first soil layer 21, the lower part of the second pull rod 11 is positioned at the second soil layer 22, and the lower part of the third pull rod 12 is positioned at the third soil layer 23. The bottoms of the first pull rod 6, the second pull rod 11 and the third pull rod 12 are connected with the center of the rubber piston 9 through bearings 14, and the rubber piston 9 is arranged at the bottom of the inner wall of each inner cylinder 7 and is in sliding sealing connection with the inner wall of each inner cylinder 7. The elastic material volume expansion of the rubber piston 9 can have better tightness with the inner wall contact of the inner cylinder 7, and the bearing 14 is placed inside the rubber piston 9 and is connected with the pull rod together, so that the rotation of the pull rod is guaranteed, and meanwhile, the rotation of the rubber piston 9 is not driven, and the phenomenon of dislocation of a through hole is avoided. As shown in fig. 4, 5 and 6, the rubber piston 9 is provided with a water through hole 15, and the water through hole 15 is provided with a vane valve 10 for controlling water passing between the upper layer and the lower layer. The first pull rod 6, the second pull rod 11 and the third pull rod 12 are respectively provided with the blade valve 10, the blade valve 10 controls the water injection process, the water storage at the water injection position is controlled through the opening and closing of the blade valve 10, the blade valve 10 is arranged in an outward convex shape so as to be tightly connected with the rubber piston 9, and the tightness of the inside is ensured. The top end of the outer cylinder 5 is connected with a water inlet pipe 3, and the water meter 2 and a valve 4 for controlling the total water injection amount are arranged on the water inlet pipe 3. The water through holes 15 are controlled to be opened and closed by the rotation of the blade valve 10, so that the aim of layered quantitative water storage is fulfilled. The rubber piston 9 is driven by stretching of the pull rod, so that water in the water storage chamber 8 flows to the outer cylinder 5 beyond the gap 20 of the inner cylinder 7, a gap is formed between the inner cylinder 7 and the outer cylinder 5, and the purpose of pressurized rapid water injection is achieved through the water injection hole 13 of the outer cylinder 5 after the water flows to the gap. The water passing through the upper water through holes 15 has a certain water pressure under the action of thrust, and the water passing through the lower water through holes 15 also has a thrust action under the action of gravity, so that balance is achieved to a certain extent, and uniform water injection in the soil layer is facilitated.
The computer terminal 19 is connected with the water injection system, and the computer terminal 19 is connected with the soil moisture analyzer 18 through the data line 17, and the soil moisture analyzer 18 is connected with the soil moisture sensor 16 that sets up in different soil layers. The soil moisture sensor 16 is located in the soil layer outside the outer cylinder 5 by a distance for monitoring the change of soil moisture and transmitting data to the control system in time, and the soil moisture analyzer 18 can monitor the change of moisture in real time and control the injection of water through the data. The pull rod controller 1, the soil moisture analyzer 18, the water meter 2, the valve 4 and the computer terminal 19 are electrically connected by adopting the existing structure, and data analysis and signal receiving and sending are uniformly carried out. The pull rod controller 1 and the soil moisture analyzer 18 adopt the existing structure. The information feedback through the monitoring system aims at a target task, and the water injection system is pressurized and injected with water by sending signals, so that water can quickly and accurately flow into a target soil layer and reach the target water content.
In the embodiment, the system can be operated in a mode of injecting water from the middle to the periphery, meanwhile, the interlayer design of the inner cylinder 7 and the outer cylinder 5 has a buffer effect on water flow, and the water flow can flow out of the upper water injection hole 13 and the lower water injection hole 13 of each layer and uniformly spread in the soil body by considering the pressure of the rubber piston 9 extruding the water, the gravitational potential energy, the matrix suction force of the soil body and the like.
The specific application steps of the system in the embodiment when the system is used for three-layer separated layer water injection are as follows:
Step one: the blade valves 10 of each layer are determined to be in a closed state, and the connection condition of the soil moisture sensor 16, the soil moisture analyzer 18 and other devices is checked.
Step two: the valve 4 is opened, water flows into the water storage chamber 8 of the first layer from the water injection pipe, when the water quantity reaches a proper position, the first pull rod 6 is pulled to enable the rubber piston 9 to upwards extrude to cross the inner cylinder 7 and flow out from the water injection hole 13 on the outer cylinder 5, the water injection quantity is timely controlled to meet the water content of the first layer of soil layer through monitoring feedback of the soil moisture analyzer 18 and a control system, and then the first pull rod 6 is reset by the pull rod controller 1.
Step three: when the water content of the first soil layer reaches the requirement, the first pull rod 6 is rotated to open the blade valve 10, so that water flows into the water storage chamber 8 in the second layer through the water through hole 15 of the rubber piston 9; when the water quantity reaches a proper position, stopping water injection, and closing a layer of blade valve 10; and pulling the second pull rod 11 to enable moisture to flow into the second soil layer, repeating the steps, and enabling the second soil layer to reach the target moisture content through data analysis feedback and control of the water meter 2.
Step four: after the second soil layer reaches the target water content, opening the first and second layer blade valves 10 to enable water to flow into the water storage chamber 8 of the third layer, stopping water injection when the water quantity reaches a proper position, closing the second layer blade valve 10, pulling the third pull rod 12 to enable water to flow into the third soil layer, and repeatedly controlling the third soil layer through the computer terminal 19 comprehensive data analyzer and the water meter 2 to enable the third soil layer to reach the target water content.
Therefore, the pressurized control water injection system for the collapsible loess field with low water content can solve the problem of layered water content in foundation treatment, provide field soil conditions meeting requirements for later construction operation, and has strong practicability.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention and not for limiting it, and although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that: the technical scheme of the invention can be modified or replaced by the same, and the modified technical scheme cannot deviate from the spirit and scope of the technical scheme of the invention.
Claims (3)
1. A pressurization control water injection system for low water content collapsible loess place, its characterized in that: the device comprises a water injection system for layered quantitative water injection, a monitoring system for monitoring the water content of a soil layer and a control system for controlling the water injection quantity, wherein the water injection system comprises an outer cylinder with a plurality of water injection holes, a plurality of inner cylinders are arranged in the outer cylinder, a water storage chamber is arranged in the inner cylinder, a pull rod group is arranged in the water storage chamber and is connected with a pull rod controller, the pull rod group comprises a plurality of pull rods with different diameters and different lengths, and the bottom ends of the pull rods are all connected with the inner cylinder in a sealing manner through rubber pistons; the control system comprises a computer terminal, and the monitoring system comprises a soil moisture sensor and a soil moisture analyzer;
The diameter of the pull rod at the upper part is larger than that of the pull rod at the lower part, and the length of the pull rod at the upper part is smaller than that of the pull rod at the lower part; the pull rod at the lower part is sleeved in the pull rod at the upper part, and the top of the pull rod is connected with the pull rod controller; a gap for water outflow is arranged between the adjacent inner cylinders which are arranged up and down; the bottom end of each pull rod is connected with the center of a rubber piston through a bearing, and the rubber piston is arranged at the bottom of the inner wall of each inner cylinder and is in sliding sealing connection with the inner wall of each inner cylinder; the rubber piston is provided with a water hole, a blade valve for water on-off is arranged at the water hole, and the blade valve is connected with the pull rod.
2. The pressurized control water injection system for a collapsible loess field with low water content as set forth in claim 1, wherein: the top end of the outer cylinder is connected with a water inlet pipe, and the water inlet pipe is provided with a water meter and a valve for controlling the total water injection quantity.
3. The pressurized control water injection system for a collapsible loess field with low water content as set forth in claim 2, wherein: the computer terminal is connected with the water injection system, and the computer terminal is connected with the soil moisture analyzer through the data line, and the soil moisture analyzer is connected with the soil moisture sensor arranged in different soil layers.
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| CN202410260195.7A CN117845874B (en) | 2024-03-07 | 2024-03-07 | Pressurized control water injection system for low-water-content collapsible loess field |
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| CN202410260195.7A CN117845874B (en) | 2024-03-07 | 2024-03-07 | Pressurized control water injection system for low-water-content collapsible loess field |
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| CN117845874B true CN117845874B (en) | 2024-05-14 |
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