CN114319222A - Adjustable underground curtain suitable for coastal underground reservoir and construction method thereof - Google Patents
Adjustable underground curtain suitable for coastal underground reservoir and construction method thereof Download PDFInfo
- Publication number
- CN114319222A CN114319222A CN202210031179.1A CN202210031179A CN114319222A CN 114319222 A CN114319222 A CN 114319222A CN 202210031179 A CN202210031179 A CN 202210031179A CN 114319222 A CN114319222 A CN 114319222A
- Authority
- CN
- China
- Prior art keywords
- underground
- adjustable
- curtain
- gate
- water
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Special Wing (AREA)
Abstract
The invention provides an adjustable underground curtain suitable for a coastal underground reservoir and a construction method thereof, wherein related areas such as invasion of underground fresh water and seawater are determined according to hydrogeological conditions of coastal areas; selecting an adjustable underground curtain construction position according to the seawater invasion area, wherein the adjustable underground curtain needs to completely cut off the seawater invasion area, the upper part of the adjustable underground curtain is constructed to the ground surface, the bottom of the adjustable underground curtain is constructed to the bottom impervious bedrock, and the height of the wall body of the underground curtain is slightly higher than the highest tide level of the local sea level; the adjustable underground curtain comprises a fixed underground wall and adjustable gates, wherein the adjustable gates and the fixed underground wall are distributed at intervals. According to the technical scheme, the opening size of the underground curtain gate is adjusted in real time, seawater backward-flowing type invasion in a dry period is prevented, and soil salinization of a coastal region in a rich period is avoided.
Description
Technical Field
The invention relates to the technical field of seawater intrusion prevention and control, in particular to an adjustable underground curtain suitable for a coastal underground reservoir and a construction method thereof.
Background
The problem of seawater invasion is a great challenge facing groundwater resource management of the coastal aquifer in the global world due to the fact that sea level rises caused by excessive exploitation of underground water resources and global climate warming cause the seawater invasion of inland aquifers (seawater invasion for short) in coastal areas. Particularly, the rainfall capacity is small in the coastal areas in the north of China in dry seasons, and a large amount of underground water is mined to form regional underground water falling funnels. At this time, the ground water level is lower than the sea level, so that the reverse-flow seawater invasion occurs. The seawater invasion can cause the water quality deterioration of underground water, so that the fresh water supply is insufficient, and the soil salinization can be directly initiated, so that the ecological vegetation in the coastal zone is dehydrated and wilted, and the agricultural crop yield is greatly reduced.
In the prior art, underground curtains have been widely used in coastal areas around the world as an important means for preventing seawater intrusion. Underground curtains are generally classified into full-section, top-hung and sunken types.
The wall body of the full-section underground curtain is built from the earth surface to the water-tight bedrock, so that the underground water can be completely prevented from being discharged to the sea, and an underground reservoir with unadjustable reservoir capacity is formed; the upper suspension type underground curtain cuts off an underground water seepage path at the upper part of the aquifer, an opening is reserved at the bottom of the aquifer, upstream underground fresh water is forced to be discharged to the sea through the opening at the bottom, and seawater invasion is driven to retreat by virtue of high-speed underground water flow at the opening at the bottom; the sinking underground curtain is mainly arranged at the lower part of the aquifer and is downwards connected with the waterproof bottom plate, the path of the seawater wedge propelled to the land is directly intercepted through the physical barrier of the wall, and the opening is reserved at the upper part of the aquifer to allow the upstream underground water to cross the wall and be discharged to the sea.
The wall of the full-section underground curtain is built from the earth surface to the impervious bedrock, and the path of draining the underground water to the sea is completely cut off. The underground water-blocking curtain cuts off hydraulic connection between underground seawater and fresh water, but a series of ecological environment problems of enrichment of terrestrial pollutants of an upstream aquifer of the underground curtain, and severe rise of underground water level so as to cause waterlogging, secondary salinization of soil and the like are easily caused. The suspended and sinking underground curtains are only suitable for the underground hydraulic condition that the underground water level is higher than the sea level, and cannot cope with the backward flowing seawater invasion.
Disclosure of Invention
In order to make up for the defects of the prior art, the invention provides an adjustable underground curtain suitable for a coastal underground reservoir and a construction method thereof.
The invention is realized by the following technical scheme: an adjustable underground curtain suitable for a coastal underground reservoir is characterized in that the upper part of the adjustable underground curtain is built to the ground surface, the bottom of the adjustable underground curtain is built to a bottom impervious bedrock, the height of the wall body of the underground curtain is slightly higher than the highest tide level of the local sea level, the adjustable underground curtain comprises a fixed underground wall and an adjustable gate, and the adjustable gate and the fixed underground wall are distributed at intervals; the adjustable gate is provided with a gate chamber, the left side and the right side of the gate chamber are connected with the fixed underground wall, and porous retaining walls are arranged upstream and downstream; the left side and the right side in the lock chamber are provided with limiting slide rails which limit the adjustable gate to only slide up and down; the top of lock chamber is equipped with hoisting accessory, including fore-set, hoist cable, footstock and lifting machine, and the top of adjustable gate is connected to the one end of hoist cable, and the lifting machine that sets up on the footstock is connected to the other end, and the footstock passes through two fore-sets fixed mounting in lock chamber top.
A construction method of an adjustable underground curtain suitable for a coastal underground reservoir specifically comprises the following steps:
s1: according to hydrogeological conditions of coastal areas, determining a seawater area, a sea level, a groundwater layer area, an earth surface area, a fresh water area in the groundwater layer, an underground water level, a bottom impervious bedrock and a seawater invasion area.
S2: selecting an adjustable underground curtain construction position according to the seawater invasion area, wherein the adjustable underground curtain needs to completely cut off the seawater invasion area, the upper part of the adjustable underground curtain is constructed to the ground surface, the bottom of the adjustable underground curtain is constructed to the bottom impervious bedrock, and the height of the wall body of the underground curtain is slightly higher than the highest tide level of the local sea level;
s3: setting an underground water level monitoring well in an upstream area of the underground water flow for observing the underground water level at any time;
s4: the adjustable underground curtain comprises a fixed underground wall and an adjustable gate, wherein the adjustable gate and the fixed underground wall are distributed at intervals;
s5: the adjustable gate is provided with a gate chamber, the left side and the right side of the gate chamber are connected with the fixed underground wall, and porous retaining walls are arranged upstream and downstream;
s6: the left side and the right side in the lock chamber are provided with limiting slide rails which limit the adjustable gate to only slide up and down;
s7: a lifting device is arranged above the lock chamber and comprises jack posts, slings, a jack seat and a lifting machine, one end of each sling is connected with the top end of the adjustable lock gate, the other end of each sling is connected with the lifting machine arranged on the jack seat, and the jack seat is fixedly arranged above the lock chamber through the two jack posts;
s8: determining an underground water level warning value according to local meteorological and hydrogeological conditions, wherein an adjustable gate is in a closed state in a daily state; when the underground water level in the monitoring well is higher than the warning value, the adjustable gate is opened in time to drain the underground water, and when the underground water level is lowered and stabilized below the warning value, the adjustable gate can be closed.
As a preferred scheme, the fixed underground wall adopts one construction method of high-pressure jet grouting, a vibration die sinking method, a water jetting method, a hydraulic grab bucket method and a cased well backfill method.
Due to the adoption of the technical scheme, compared with the prior art, the invention has the following beneficial effects:
1. and selecting an adjustable underground curtain construction position according to the seawater invasion area, wherein the adjustable underground curtain needs to completely cut off the seawater invasion area. The upper part of the underground curtain needs to be built to the earth surface, the bottom part of the underground curtain needs to be built to the bottom layer of the impervious bedrock, and the height of the wall body of the underground curtain is slightly higher than the highest tide level of the local sea level. The underground curtain is an upright wall body, separates underground water from invaded underground salt water, can block upstream underground water from discharging to sea water, increases the reserve capacity of an underground reservoir, can block seawater invasion simultaneously, can effectively deal with reverse-flow seawater invasion, prevents the sea water from polluting upstream underground fresh water, and ensures the fresh water supply quantity of coastal areas.
2. The adjustable underground curtain mainly comprises a fixed underground wall 61 and an adjustable gate 62, wherein the gate and the fixed underground curtain are distributed at intervals. In the daily state, the gate is in a closed state. When the underground water level in the monitoring well is higher than the warning value, the gate is opened in time to discharge underground water, an underground reservoir with adjustable reservoir capacity is formed, and the phenomenon that the underground water level is too high to cause soil salinization is avoided. Because the water head underground water is discharged to the ocean through the gate, the salt water invading from the downstream can be driven back, and the condition that the salt water invades an underground reservoir when the gate is opened and the quality of the underground water is polluted is prevented. The gate may be closed when the ground water level decreases and stabilizes below a warning value.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic view of an adjustable underground curtain perpendicular to a shoreline;
FIG. 2 is a partial cross-sectional view of the underground curtain of FIG. 1, shown without the left and right portions being shown in the same configuration as the figure, and not shown again;
FIG. 3 is a top view of the adjustable gate, in which the left and right parts are not drawn and have the same structure as the structure in the figure and are not drawn repeatedly;
FIG. 4 shows the variation of the groundwater level when the gate is closed and opened, and the groundwater level rises due to rainfall for 0-20 days when the gate is closed. Opening the gate 20 days later; and 20 d-60 d are the change conditions of the underground water level after the gate is opened. After 60d, the underground water level is kept unchanged after the gate is closed after the underground water level reaches the normal value of 8.5 m.
Wherein, the corresponding relationship between the reference numbers and the components in fig. 1 to 3 is:
the device comprises a sea, a sea level, an underground water-bearing layer, an underground water level, an adjustable underground curtain, an underground water level monitoring well, a bottom-layer impermeable bedrock, a ground surface, a hoisting device, a porous retaining wall, a limiting slide rail, a lock chamber, an adjustable underground curtain fixing wall body, an adjustable gate jack-post, a gate sling, a gate jack-post, a lifting machine and a lifting machine, wherein the 1 is the sea, the 2 is the sea level, the 3 is the underground water-bearing layer, the 4 is underground water-bearing layer, the 5 is the underground water-bearing layer, the 6 is the adjustable underground curtain, the 7 is the underground water level monitoring well, the 8 is the bottom-bearing layer impermeable bedrock, the 9 is the ground surface, the 10 is the lifting device, the porous retaining wall, the 12 is the limiting slide rail, the lock chamber, the adjustable underground water-bearing layer, the adjustable gate jack-post, the adjustable gate jack-post, the lifting machine and the lifting machine are arranged on the gate jack-post, the lift jack-post, the lift jack-post, and the lift device are arranged on the lift device, and the lift device.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced otherwise than as specifically described herein, and thus the scope of the present invention is not limited by the specific embodiments disclosed below.
An adjustable underground curtain suitable for a coastal underground reservoir and a construction method thereof according to an embodiment of the present invention will be described in detail with reference to fig. 1 to 4.
As shown in fig. 1 to 3, the present invention provides an adjustable underground curtain suitable for coastal underground reservoirs, wherein the upper part of the adjustable underground curtain is built to the earth surface 9, the bottom part is built to the bottom layer of impermeable bedrock 8, the height of the wall body of the underground curtain is slightly higher than the highest tide level of the local sea level, the adjustable underground curtain 6 comprises two parts of a fixed underground wall 61 and an adjustable gate 62, and the adjustable gate 62 is distributed with the fixed underground wall 61 at intervals; the adjustable gate 62 is provided with a gate chamber 13, the left side and the right side of the gate chamber 13 are connected with the fixed underground wall 61, and the upstream and the downstream are provided with porous retaining walls 11; the left side and the right side in the lock chamber 13 are provided with limiting slide rails 12 which limit the adjustable gate 62 to only slide up and down; the lifting device 10 is arranged above the lock chamber 13 and comprises a top column 101, a lifting rope 102, a top seat 103 and a lifting machine 104, one end of the lifting rope 102 is connected with the top end of the adjustable lock gate 62, the other end of the lifting rope is connected with the lifting machine 104 arranged on the top seat 103, and the top seat 103 is fixedly arranged above the lock chamber 13 through two top columns 101.
A construction method of an adjustable underground curtain suitable for a coastal underground reservoir specifically comprises the following steps:
s1: according to the hydrogeological conditions of the coastal areas, determining a seawater area 1, a sea level 2, a groundwater layer area 3, a ground surface 9 range, a fresh water 4 area in the groundwater layer, a groundwater level 5, a bottom impervious bedrock 8 and a seawater invasion area.
S2: selecting a construction position of an adjustable underground curtain 6 according to a seawater invasion area, wherein the adjustable underground curtain 6 needs to be completely cut off the seawater invasion area, the upper part of the adjustable underground curtain 6 is built to the ground surface 9, the bottom part of the adjustable underground curtain 6 is built to a bottom layer impervious bedrock 8, and the height of the wall body of the underground curtain is slightly higher than the highest tide level of the local sea level; the underground curtain is an upright wall body, directly separates the underground water from the invaded underground salt water, can block a seawater invasion path, prevents the upstream underground water from being polluted, and ensures the fresh water supply amount of coastal areas. Meanwhile, the adjustable underground curtain can block upstream underground water from being discharged to seawater, and the reserve capacity of the underground reservoir is increased.
S3: an underground water level monitoring well 7 is arranged in an upstream area of the underground water flow and is used for observing the underground water level at any time;
s4: the adjustable underground curtain 6 comprises a fixed underground wall 61 and an adjustable gate 62, wherein the adjustable gate 62 and the fixed underground wall 61 are distributed at intervals;
s5: the adjustable gate 62 is provided with a lock chamber 13, the left side and the right side of the lock chamber 13 are connected with the fixed underground wall 61, and porous retaining walls 11 are arranged at the upstream and the downstream, so that underground aquifer media can be prevented from entering the lock chamber along with water flow;
s6: the left side and the right side in the lock chamber 13 are provided with limiting slide rails 12 which limit the adjustable gate 62 to only slide up and down;
s7: a lifting device 10 is arranged above the lock chamber 13 and comprises a top column 101, a lifting rope 102, a top seat 103 and a lifting machine 104, one end of the lifting rope 102 is connected with the top end of the adjustable lock gate 62, the other end of the lifting rope is connected with the lifting machine 104 arranged on the top seat 103, and the top seat 103 is fixedly arranged above the lock chamber 13 through two top columns 101;
s8: determining an underground water level warning value according to local meteorological and hydrogeological conditions, wherein the adjustable gate 62 is in a closed state in a daily state; when the underground water level in the monitoring well is higher than the warning value, the adjustable gate 62 is opened in time to drain the underground water, so that the phenomenon that the underground water level is too high to cause soil salinization is avoided, and the residual seawater after the underground curtain is built can be washed away while the underground fresh water is drained. The adjustable gate 62 may be closed when the ground water level falls and settles below a warning value.
The fixed underground wall 61 is constructed by one of a high-pressure jet grouting method, a vibration die sinking method, a water jet method, a hydraulic grab bucket method and a cased hole backfilling method.
The method comprises the steps of surveying an underground seawater invasion area close to the sea at the south end of the Staphylea river basin of Qingdao city, and investigating the sea level of the Staphylea river, the underground water level, the water-containing area, the water-impermeable bedrock area at the bottom and the seawater invasion area. The total length of an underground aquifer of a research area is 1km, the width of the underground aquifer is 1km, the depth of the underground aquifer is 10m below the sea level, and bedrock at the bottom of the aquifer is impermeable. The hydraulic conductivity of the aquifer was 52m/d and the porosity was 0.3. The height of underground water level is 8.5m and is 0.5m higher than seawater level by taking the impermeable bedrock at the bottom as a reference.
Combining hydrological parameters of an underground seawater invasion area close to the sea at the south end of the Staphylea river basin in Qingdao city, adopting Modflow software to simulate the condition of the adjustable underground curtain designed by the invention, wherein the distance between the underground curtain and the boundary of the sea water is 215m, the adjustable underground curtain penetrates through the whole aquifer, the upper part of the adjustable underground curtain is built to the earth surface, the bottom of the adjustable underground curtain is built to the bottom layer of impermeable bedrock, and the height of the wall body is slightly higher than the highest tide level of the local sea level. The width of the simulated adjustable underground curtain is 1km, 10 adjustable gates are arranged on an underground wall fixed on the underground curtain at equal intervals, and the width of each gate is 5 m. The adjustable gate adopts prefabricated parts, and the position of about 50m in the upstream direction of the gate is selected as the position of the underground water level monitoring well. And simulating the rising condition of the underground water level caused by continuous rainfall, opening the gate to observe the falling condition of the underground water level after the underground water level exceeds the daily water level by about 0.47m, and closing the gate after the water level falls to the daily water level. The change of the groundwater level is shown in fig. 4.
As can be seen from FIG. 4, in the state where the gate is closed, the groundwater level gradually rises from 8.5m to 8.97m under the influence of rainfall infiltration in the first 20 d. After the gate is opened at 20d, the underground water level gradually drops, and when the gate is closed, the underground water level is kept unchanged after the gate is decreased to 8.5m at 60 d.
In the description of the present invention, the terms "plurality" or "a plurality" refer to two or more, and unless otherwise specifically limited, the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention; the terms "connected," "mounted," "secured," and the like are to be construed broadly and include, for example, fixed connections, removable connections, or integral connections; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description herein, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (4)
1. An adjustable underground curtain suitable for a coastal underground reservoir is characterized in that the upper part of the adjustable underground curtain is built to the ground surface (9), the bottom of the adjustable underground curtain is built to a bottom impervious bedrock (8), the height of the wall body of the underground curtain is slightly higher than the highest tide level of the local sea level, the adjustable underground curtain (6) comprises a fixed underground wall (61) and an adjustable gate (62), and the adjustable gate (62) and the fixed underground wall (61) are distributed at intervals; the adjustable gate (62) is provided with a gate chamber (13), the left side and the right side of the gate chamber (13) are connected with a fixed underground wall (61), and a porous retaining wall (11) is arranged upstream and downstream; the left side and the right side in the lock chamber (13) are provided with limiting slide rails (12) which limit the adjustable gate (62) to only slide up and down; a hoisting device (10) is arranged above the lock chamber (13).
2. The adjustable underground curtain suitable for the coastal underground reservoir as claimed in claim 1, wherein the hoisting device (10) comprises a top pillar (101), a sling (102), a top seat (103) and a crane (104), one end of the sling (102) is connected with the top end of the adjustable gate (62), the other end of the sling is connected with the crane (104) arranged on the top seat (103), and the top seat (103) is fixedly arranged above the lock chamber (13) through two top pillars (101).
3. A construction method of an adjustable underground curtain suitable for a coastal underground reservoir specifically comprises the following steps:
s1: determining a seawater area (1), a sea level (2), an underground aquifer area (3), a ground surface (9) range, a fresh water (4) area in the underground aquifer, an underground water level (5), a bottom impervious bedrock (8) and a seawater invasion area according to hydrogeological conditions of the coastal area;
s2: selecting a construction position of an adjustable underground curtain (6) according to a seawater invasion area, wherein the adjustable underground curtain (6) needs to be completely cut off the seawater invasion area, the upper part of the adjustable underground curtain (6) is built to the ground surface (9), the bottom of the adjustable underground curtain (6) is built to a bottom impervious bedrock (8), and the height of the wall body of the underground curtain is slightly higher than the highest tide level of the local sea level;
s3: an underground water level monitoring well (7) is arranged in an upstream area of the underground water flow and is used for observing the underground water level at any time;
s4: the adjustable underground curtain (6) comprises a fixed underground wall (61) and an adjustable gate (62), wherein the adjustable gate (62) and the fixed underground wall (61) are distributed at intervals;
s5: the adjustable gate (62) is provided with a gate chamber (13), the left side and the right side of the gate chamber (13) are connected with a fixed underground wall (61), and porous retaining walls (11) are arranged upstream and downstream, so that underground aquifer media can be prevented from entering the gate chamber along with water flow;
s6: the left side and the right side in the lock chamber (13) are provided with limiting slide rails (12) which limit the adjustable gate (62) to only slide up and down;
s7: a lifting device (10) is arranged above the lock chamber (13) and comprises jack posts (101), a sling (102), a jack seat (103) and a lifting machine (104), one end of the sling (102) is connected with the top end of the adjustable lock gate 62, the other end of the sling (102) is connected with the lifting machine (104) arranged on the jack seat (103), and the jack seat (103) is fixedly arranged above the lock chamber (13) through the two jack posts (101);
s8: determining an underground water level warning value according to local meteorological and hydrogeological conditions, wherein an adjustable gate (62) is in a closed state in a daily state; when the underground water level in the monitoring well is higher than the warning value, an adjustable gate (62) is opened in time to drain the underground water, so that the phenomenon that the soil is salinized due to overhigh underground water level is avoided; because the water head underground water is discharged to the ocean through the adjustable gate (62), the salt water invading from the downstream can be driven back, and the salt water is prevented from invading an underground reservoir when the gate is opened, so that the water quality of the underground water is prevented from being polluted; the adjustable gate (62) may be closed when the ground water level decreases and stabilizes below a warning level.
4. The method of claim 3, wherein the fixed underground wall (61) is constructed by one of a high pressure jet grouting method, a vibration die sinking method, a water jet method, a hydraulic grab method, and a cased hole backfilling method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210031179.1A CN114319222A (en) | 2022-01-12 | 2022-01-12 | Adjustable underground curtain suitable for coastal underground reservoir and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210031179.1A CN114319222A (en) | 2022-01-12 | 2022-01-12 | Adjustable underground curtain suitable for coastal underground reservoir and construction method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114319222A true CN114319222A (en) | 2022-04-12 |
Family
ID=81027136
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210031179.1A Pending CN114319222A (en) | 2022-01-12 | 2022-01-12 | Adjustable underground curtain suitable for coastal underground reservoir and construction method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114319222A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115611350A (en) * | 2022-08-15 | 2023-01-17 | 河海大学 | Combined seepage interception reaction wall for harbour groundwater environment treatment |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002121743A (en) * | 2000-10-12 | 2002-04-26 | Nisshin Kenko Kk | Ground water lowering method and ground water lowering device used for the method |
| CN206128098U (en) * | 2016-10-13 | 2017-04-26 | 珠海兴业新能源科技有限公司 | Adjustable expert separates water proof curtain in water -bearing stratum |
| CN211668742U (en) * | 2020-03-31 | 2020-10-13 | 中国科学院地理科学与资源研究所 | Experimental device for be used for studying physical barrier of control sea water invasion |
| CN113062278A (en) * | 2021-03-16 | 2021-07-02 | 镇江市工程勘测设计研究院有限公司 | Stoplog type accident maintenance dual-purpose gate |
| CN113404072A (en) * | 2021-07-06 | 2021-09-17 | 辽宁省水利水电勘测设计研究院有限责任公司 | Underground cut-off wall with adjustable combined well gate |
-
2022
- 2022-01-12 CN CN202210031179.1A patent/CN114319222A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002121743A (en) * | 2000-10-12 | 2002-04-26 | Nisshin Kenko Kk | Ground water lowering method and ground water lowering device used for the method |
| CN206128098U (en) * | 2016-10-13 | 2017-04-26 | 珠海兴业新能源科技有限公司 | Adjustable expert separates water proof curtain in water -bearing stratum |
| CN211668742U (en) * | 2020-03-31 | 2020-10-13 | 中国科学院地理科学与资源研究所 | Experimental device for be used for studying physical barrier of control sea water invasion |
| CN113062278A (en) * | 2021-03-16 | 2021-07-02 | 镇江市工程勘测设计研究院有限公司 | Stoplog type accident maintenance dual-purpose gate |
| CN113404072A (en) * | 2021-07-06 | 2021-09-17 | 辽宁省水利水电勘测设计研究院有限责任公司 | Underground cut-off wall with adjustable combined well gate |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115611350A (en) * | 2022-08-15 | 2023-01-17 | 河海大学 | Combined seepage interception reaction wall for harbour groundwater environment treatment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4549837A (en) | Penstock | |
| JPH08284139A (en) | Automatic lifting-lowering type levee body | |
| CN114232663B (en) | Variable-permeability underground curtain for preventing seawater intrusion and land source pollution and construction method thereof | |
| CN112746624A (en) | Novel comprehensive water lowering and draining method and device for mudstone subway station | |
| CN110984200B (en) | Method for draining water of foundation pit of binary geological structure layer | |
| CN114319222A (en) | Adjustable underground curtain suitable for coastal underground reservoir and construction method thereof | |
| CN205999897U (en) | A kind of seepage proof curtain using dewatering well borders on the river foundation ditch | |
| CN205205844U (en) | Member is used in construction of tubular well precipitation in elevator foundation ditch or sump pit | |
| CN211498722U (en) | Water conservancy dykes and dams structure | |
| CN208578054U (en) | A kind of embed-type shallow-layer combined water drain pipe | |
| CN201704774U (en) | Downward passage storage-regulated leaching well draining device based on land saving and environmental protection | |
| CN213448534U (en) | Sealing and lowering combined pressure-bearing water control system | |
| CN114319404A (en) | Underground curtain for preventing seawater invasion and purifying residual saline water and construction method thereof | |
| CN211080123U (en) | Ecological bank slope protection device in river lake | |
| CN208251016U (en) | A kind of turnover plate type flood-control wall | |
| KR100938388B1 (en) | Prevention apparatus of earth and sand inflow of fish pool by using buoyancy | |
| CN216238668U (en) | Intelligent drainage pressure relief active anti-floating system | |
| JP4510325B2 (en) | Rainwater infiltration facility with mud tank | |
| CN219195796U (en) | Mountain area silt processing apparatus | |
| CN216874209U (en) | Three-dimensional afforestation structure in coastal saline and alkaline land normal position | |
| CN220789815U (en) | Foundation pit drainage structure | |
| CN108532533A (en) | Governing system and construction method of the underground water by inwelling | |
| JP3251927B2 (en) | Prevention of liquefaction during ground earthquake by infiltration of dissolved air into the ground | |
| CN115341587B (en) | Anti-floating structure and method for U-shaped groove with combined water isolation and drainage and decompression | |
| KR200342387Y1 (en) | Terrace land on the river security device with ascent and descent capability |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |