CN220414292U - Precipitation device for sandy pebble stratum - Google Patents
Precipitation device for sandy pebble stratum Download PDFInfo
- Publication number
- CN220414292U CN220414292U CN202321635393.4U CN202321635393U CN220414292U CN 220414292 U CN220414292 U CN 220414292U CN 202321635393 U CN202321635393 U CN 202321635393U CN 220414292 U CN220414292 U CN 220414292U
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- CN
- China
- Prior art keywords
- precipitation
- water
- stratum
- sleeve
- pipe
- Prior art date
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Links
- 238000001556 precipitation Methods 0.000 title claims abstract description 41
- 239000000463 material Substances 0.000 claims abstract description 13
- 239000004927 clay Substances 0.000 claims abstract description 4
- 238000007789 sealing Methods 0.000 claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 18
- 238000001914 filtration Methods 0.000 claims description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 239000004576 sand Substances 0.000 claims description 6
- 239000003673 groundwater Substances 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 3
- 239000011148 porous material Substances 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 3
- 238000010276 construction Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 230000002265 prevention Effects 0.000 abstract description 2
- 238000005553 drilling Methods 0.000 description 4
- 239000002349 well water Substances 0.000 description 4
- 235000020681 well water Nutrition 0.000 description 4
- 239000002245 particle Substances 0.000 description 3
- 238000005086 pumping Methods 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Landscapes
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The utility model discloses a precipitation device for a sandy pebble stratum, which comprises a sleeve and a precipitation well pipe arranged in the sleeve; a filter material is filled between the dewatering well pipe and the sleeve pipe, and clay for sealing is filled above the filter material; the precipitation device has the characteristics of quick pore forming, high efficiency, strong adaptability, low cost and hole collapse prevention, can effectively cope with the situation of hole collapse in the pore forming process of the sandy pebble stratum, and can quickly form a precipitation system; meanwhile, collapse risks are avoided, site construction difficulty and production cost of complex stratum such as sandy pebbles are reduced, the hydraulic control system is applicable to complex stratum precipitation engineering under various working conditions by adjusting the dimension parameters of the casing pipe and the precipitation well pipe, and good operability is achieved.
Description
Technical Field
The utility model relates to a pipe well dewatering device, in particular to a dewatering device for a sandy pebble stratum.
Background
The conventional precipitation well pore-forming mode is slurry wall protection, impact drilling or rotary drilling pore-forming, and is suitable for relatively stable stratum, and for the stratum with poor self-stability such as sandy pebble stratum, the impact drilling or rotary drilling pore-forming is adopted to easily cause disturbance to the stratum so as to cause hole collapse; when the slurry wall protection pore-forming mode is adopted, the stability of the sandy pebble stratum is poor, and the existing precipitation device is suitable for stabilizing the stratum and cannot be directly applied to the sandy pebble stratum.
Disclosure of Invention
The utility model aims to: the utility model aims to provide a precipitation device for preventing a sandy pebble stratum from collapsing.
The technical scheme is as follows: the utility model relates to a precipitation device for a sandy pebble stratum, which comprises a sleeve and a precipitation well pipe arranged in the sleeve; a filter material is filled between the dewatering well pipe and the sleeve pipe, and clay for sealing is filled above the filter material.
Further, the sleeve is formed by fixedly connecting the head and the tail of a plurality of steel sleeves, and a plurality of water discharge holes are uniformly reserved on each steel sleeve.
Further, the filter material is sand gravel, and the grain size of the sand gravel on the transverse section is gradually increased from outside to inside; the sand and gravel particle size increases gradually in the outside-in sequence, i.e. in the direction of the casing to the precipitation casing, and neither layer of particles is allowed to pass through the pores of the adjacent coarser layer.
Further, the dewatering well pipe is composed of a hollow pipe, a water filtering pipe and a hollow pipe in sequence, wherein the water filtering pipe is arranged in the depth range of the underground water level, and a plurality of through holes for water filtering are formed in the pipe wall; the position of the water filtering pipe is reasonably adjusted according to the ground water level condition of the stratum.
Further, a filter screen is arranged on the surface of the water filtering pipe.
Further, the filter screen is composed of a plurality of layers of filter screens with different meshes.
Further, the filter screen is fixedly connected from outside to inside according to the order from small mesh to large mesh.
The beneficial effects are that: compared with the prior art, the utility model has the following advantages: the precipitation device has the characteristics of quick pore forming, high efficiency, strong adaptability, low cost and hole collapse prevention, can effectively cope with the situation of hole collapse in the pore forming process of the sandy pebble stratum, and can quickly form a precipitation system; meanwhile, collapse risks are avoided, site construction difficulty and production cost of complex stratum such as sandy pebbles are reduced, the hydraulic control system is applicable to complex stratum precipitation engineering under various working conditions by adjusting the dimension parameters of the casing pipe and the precipitation well pipe, and good operability is achieved.
Drawings
FIG. 1 is a schematic longitudinal section of the structure of the present utility model;
FIG. 2 is a schematic cross-sectional view of the structure of the present utility model.
Detailed Description
The technical scheme of the utility model is further described below with reference to the accompanying drawings.
The size and the installation method of the precipitation device are determined as follows:
step one: determining precipitation parameters through a geological survey report and a design file, wherein the precipitation system parameters comprise precipitation ranges, precipitation depths, stratum distribution, stratum permeability coefficients, groundwater levels and the like;
step two, designing a precipitation system according to the determined precipitation parameters, and determining the number, interval and depth of precipitation wells and the single well water yield of the precipitation wells;
step three, according to the determined single well water yield, determining the diameter of a sleeve of each well and the arrangement mode of drain holes on the sleeve, so as to ensure that the water inflow of the sleeve meets the requirement of the single well water yield, wherein the minimum diameter of the sleeve meets the requirements of installation and filter material filling of a precipitation well pipe, and the diameter of the precipitation well pipe also meets the requirement of the single well water yield;
step four, according to the determined diameter of the sleeve and the diameter of the dewatering well pipe, then placing the sleeve 1 in the well, wherein the sleeve 1 is formed by fixedly connecting a plurality of steel sleeves in a tail end manner as shown in figures 1 and 2, and the specific number of the steel sleeves is determined according to the depth of the well; each steel sleeve is provided with a plurality of water discharge holes for water to enter; after the sleeve 1 is assembled and placed, the dewatering well pipe 2 is assembled, the hollow pipe, the water filtering pipe and the hollow pipe are fixed in sequence, and then the filter screen 3 is fixedly arranged on the surface of the water filtering pipe; the filter screen 3 consists of a plurality of layers of filter screens which are fixedly arranged; the number of the filter meshes is reduced from inside to outside in sequence; after the precipitation well pipe 2 is assembled, the precipitation well pipe is placed into the casing pipe 1; concentric cylindrical layers are placed between the dewatering well pipe 2 and the casing pipe 1 and are divided into a plurality of layers, and filter materials 4 with the particle sizes from large to small are sequentially placed in each layer from inside to outside; the filter material 4 is sand gravel; after the filter material 4 is fixed, clay 5 is filled above the filter material 4 and between the dewatering well pipe 2 and the sleeve 1 for sealing; as described in fig. 1 and 2, the precipitation device is assembled;
and fifthly, installing a water pumping machine, a water pumping pipe and the like in the dewatering well pipe to pump water.
Claims (7)
1. A precipitation device for a sandy pebble stratum, which comprises a casing (1) and a precipitation well pipe (2) arranged in the casing (1); the water-reducing well pipe is characterized in that a filter material (4) is filled between the sleeve (1) and the water-reducing well pipe (2), and clay (5) for sealing is filled above the filter material (4).
2. Precipitation device according to claim 1, characterized in that the casing (1) is formed by fixedly connecting a plurality of steel casings end to end, and a plurality of water discharge holes are uniformly reserved on each steel casing.
3. Precipitation device according to claim 2, wherein the filter material (4) is sand gravel and the sand gravel grain size in the transverse cross section increases gradually in the order from outside to inside.
4. A precipitation installation according to claim 3, wherein the precipitation casing (2) is composed of a hollow tube, a water filter tube and a hollow tube in this order, the water filter tube being arranged in the depth of the groundwater level and the tube wall being provided with a plurality of water-filtering through holes.
5. Precipitation unit according to claim 4, characterized in that the filter screen (3) is provided on the surface of the filter tube.
6. Precipitation unit according to claim 5, characterized in that the screen (3) consists of a plurality of layers of different mesh screens.
7. The precipitation device of claim 6, wherein the filter screen is fixedly connected in order of small mesh to large mesh from outside to inside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321635393.4U CN220414292U (en) | 2023-06-26 | 2023-06-26 | Precipitation device for sandy pebble stratum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321635393.4U CN220414292U (en) | 2023-06-26 | 2023-06-26 | Precipitation device for sandy pebble stratum |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220414292U true CN220414292U (en) | 2024-01-30 |
Family
ID=89652910
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321635393.4U Active CN220414292U (en) | 2023-06-26 | 2023-06-26 | Precipitation device for sandy pebble stratum |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220414292U (en) |
-
2023
- 2023-06-26 CN CN202321635393.4U patent/CN220414292U/en active Active
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