CN108385706A - A kind of well-points dewatering and drainage arrangement for deep basal pit - Google Patents
A kind of well-points dewatering and drainage arrangement for deep basal pit Download PDFInfo
- Publication number
- CN108385706A CN108385706A CN201810134054.5A CN201810134054A CN108385706A CN 108385706 A CN108385706 A CN 108385706A CN 201810134054 A CN201810134054 A CN 201810134054A CN 108385706 A CN108385706 A CN 108385706A
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- well
- water
- pipe
- basal pit
- deep basal
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/06—Restraining of underground water
- E02D19/10—Restraining of underground water by lowering level of ground water
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Sewage (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The invention discloses a kind of well-points dewatering for deep basal pit and drainage arrangements, including being arranged in the water header of deep basal pit periphery, the water plug being connect with water header, the length direction arrangement along water header and several well-point pipes for being arranged straight down, it further include the water-stop curtain along deep-foundation side wall setting in one week, the well point bottom of the tube is provided with screen pipe, the direction of water-stop curtain is provided with the side pipe that catchments on the well-point pipe, several permeable holes are provided on the side pipe that catchments and the regulating device of permeable hole can be opened and closed.When rainwater is spread unchecked, the ponding in soil layer around water-stop curtain can be detached with the side pipe for being connected to well-point pipe using water plug, avoid water-stop curtain because bearing excessive the case where avalanche or leakage occur, and regulating device control permeable hole is utilized to open and close, when using the screen pipe groundwater abstraction of well point bottom of the tube, permeable hole is closed to form confined space, to enhance extraction suction of the water plug to underground water.
Description
Technical field
The present invention relates to the realm of building construction, more particularly to a kind of well-points dewatering and drainage arrangement for deep basal pit.
Background technology
Be frequently necessary to deep pit excavation when architecture construction, and its more regional foundation soil water content of precipitation it is higher,
Groundwater level is high, and foundation soil is relatively soft, bearing capacity is poor, therefore the support constructions such as sheet pile on the inside of deep basal pit can be by very
Big lateral pressure, and the problem of be susceptible to partial water burst on deep-foundation side wall, to solve the above problems, usually in deep basal pit
Inside carries out water blocking using water-stop curtain to soil layer around, is detached the underground water of deep basal pit bottom using the method for well-points dewatering
To reduce water level.
But since foundation soil is soft hygroscopic, when rainwater is spread unchecked, product is susceptible in the soil layer around water-stop curtain
Water, and the rain water-harvesting for the depths that has little time to permeate the ground is in soil layer shallow-layer, and constantly squeeze and corrode on the outside of water-stop curtain, to only
Water curtain causes greatly to bear, or even the case where localized seepage or structural breakdown occurs.
Invention content
The object of the present invention is to provide a kind of well-points dewatering for deep basal pit and drainage arrangement, have around to deep basal pit
The efficiently effect of draining and precipitation.
The present invention above-mentioned technical purpose technical scheme is that：
A kind of well-points dewatering and drainage arrangement for deep basal pit, including be arranged deep basal pit periphery water header, with catchment
The water plug of manifold connections, the length direction arrangement along water header and several well-point pipes for being arranged straight down further include
Along the water-stop curtain of the setting of deep-foundation side wall one week, the well point bottom of the tube is provided with screen pipe, towards sealing on the well-point pipe
The direction of curtain is provided with the side pipe that catchments, and several permeable holes are provided on the side pipe that catchments and can open and close the adjusting of permeable hole
Device.
By using above-mentioned technical proposal, using water plug and the screen pipe being embedded in around deep basal pit, by deep basal pit
The underground water of bottom detaches, and to lowering of watertable, base soil is made to consolidate, improves foundation strength, compared to be provided in deep basal pit
Dry execution conditions completely cut off the water in soil layer around deep basal pit using water-stop curtain, prevent water from being oozed from deep-foundation side wall
Enter in deep basal pit, increases deep basal pit internal drainage burden, influence to construct.And when rainwater is spread unchecked, rainwater has little time the depth that permeates the ground
Place collects in surface and the shallow-layer of soil layer, can constantly squeeze and corrode on the outside of water-stop curtain, is caused to water-stop curtain greatly negative
Load, the ponding in soil layer around water-stop curtain can be detached using water plug with the side pipe for being connected to well-point pipe, avoid at this time
Water-stop curtain utilizes regulating device control permeable hole to open and close because bearing excessive the case where avalanche or leakage occur, works as utilization
When the screen pipe groundwater abstraction of well point bottom of the tube, permeable hole is closed to form confined space, to enhance water plug over the ground
The extraction suction of lower water.
The present invention is further arranged to：The regulating device includes along same axial line, is bonded side pipe inner wall setting of catchmenting
Marine riser, be provided on the marine riser and corresponded with permeable hole and the identical several adjustment holes in aperture.
By using above-mentioned technical proposal, when the adjustment hole on marine riser is overlapped with the permeable hole to catchment on side pipe, soil
Water in layer just can be entered along permeable hole and adjustment hole in marine riser；When the opposite side pipe that catchments of marine riser is subjected to displacement
When, so that the axial line of adjustment hole and permeable hole is mutually staggered, to change the discharge area of permeable hole.
The present invention is further arranged to：The regulating device further includes being set to catchment in the one end of side pipe far from well-point pipe
The threaded one end of the lead screw in portion, the marine riser is connected on lead screw, and the inner wall upper edge of the outer wall of marine riser and the side pipe that catchments
Direction of axis line is respectively arranged with guide pad and guide groove.
By using above-mentioned technical proposal, the direction of displacement of marine riser is limited using guide pad and guide groove, makes marine riser
The side pipe that opposite can not catchment rotates, then rotary screw rod just can drive marine riser to be moved along the length direction for the side pipe that catchments,
To make adjustment hole mutually stagger with permeable hole, achieve the effect that adjust permeable hole discharge area, and be compared to by direct
Rotation marine riser come realize adjustment hole and permeable hole staggeredly, the rotary motion of lead screw is converted to the linear movement of marine riser,
Can according to the screw pitch on lead screw realize rotation wide-angle and only move small distance, make adjustment process more precisely with stabilization.
The present invention is further arranged to：Water-stop curtain, the lead screw are run through in the described one end of side pipe far from well-point pipe of catchmenting
Far from control lid is fixed with every one end of well-point pipe, the control, which covers, is provided with control handle, the control lid and side of catchmenting
It is provided with mechanical seal between the inner wall of pipe.
By using above-mentioned technical proposal, the control handle covered using control is conveniently operated personnel and turned to lead screw
It is dynamic, to drive marine riser displacement, and make the water entered in marine riser can not be by side pipe and the control of catchmenting using mechanical seal
Gap between lid enters in deep basal pit, and ensures the pressure to catchment in side pipe, is extracted convenient for water plug.
The present invention is further arranged to：One end close to well-point pipe is provided with the first locating part in the side pipe that catchments,
The second locating part is provided on the lead screw.
By using above-mentioned technical proposal, the displacement of marine riser is limited using the first locating part and the second locating part.
The present invention is further arranged to：Control lid is towards being provided with arrow, the collection on the end face of deep basal pit
Sign that is corresponding with arrow, representing permeable hole keying situation is provided on water side pipe.
By using above-mentioned technical proposal, the arrow covered and the indicateing arm to catchment on side pipe are being controlled using being arranged
Know cooperation, display permeable hole and the situation of adjustment hole at this time, allow the operator to adjusting control lid as the case may be,
To adjust the discharge area of permeable hole.
The present invention is further arranged to：Any well-point pipe upper edge length direction is arranged at intervals at least two sides of catchmenting
Pipe, and bottom catchment side pipe level height be higher than Deep Foundation Pit bottom level height.
By using above-mentioned technical proposal, using more be vertically the arranged side pipes that catchment to different depth in soil layer
Ponding extracted, and water is made to catchment side pipe through excessive root during permeating down, enhances drainage effect.
The present invention is further arranged to：The water-stop curtain top is provided with gutter, the sealing along deep basal pit edge
The drainage pipeline being connected with gutter is provided on curtain inner wall.
By using above-mentioned technical proposal, when rainwater is spread unchecked, the rainwater around deep basal pit above soil layer is easy to converge in
Cocurrent can play the rainwater above soil layer isolation guiding using the gutter above water-stop curtain and make into deep basal pit together
With, and rainwater is discharged into drainage pipeline, final import in catch pit is utilized.
In conclusion beneficial effects of the present invention are：
1, it catchments side pipe in setting on well-point pipe, using water plug and the side pipe that catchments by the ponding in soil layer around water-stop curtain
It detaches, avoids water-stop curtain because bearing excessive the case where avalanche or leakage occur, and opened using regulating device control permeable hole
It closes, when using the screen pipe groundwater abstraction of well point bottom of the tube, permeable hole is closed to form confined space, to which enhancing is drawn water
Extraction suction of the device to underground water；
2, it drives marine riser to be moved along the length direction for the side pipe that catchments using lead screw, so that adjustment hole is mutually staggered with permeable hole, reach
To adjusting the effect of permeable hole discharge area, and it is compared to and realizes adjustment hole and permeable hole by directly rotating marine riser
Staggeredly, the rotary motion of lead screw is converted to the linear movement of marine riser, rotation big angle can be realized according to the screw pitch on lead screw
Degree and only move small distance, make adjustment process more precisely with stabilization.
Description of the drawings
Fig. 1 is the overall structure diagram of the present invention；
Fig. 2 is the schematic cross-sectional view of the well-point pipe of the present invention, the side pipe that catchments, regulating device；
Fig. 3 is enlarged drawing at A in Fig. 2；
Fig. 4 is enlarged drawing at B in Fig. 3；
Fig. 5 is the structural schematic diagram of the control lid of the present invention, arrow, sign.
Reference numeral：1, deep basal pit；2, water header；3, water plug；4, well-point pipe；5, screen pipe；6, water-stop curtain；
7, catchment side pipe；8, permeable hole；9, regulating device；10, marine riser；11, lead screw；12, adjustment hole；13, control lid；14, it controls
Handle；15, guide pad；16, guide groove；17, mechanical seal；18, the first locating part；19, the second locating part；20, arrow；
21, sign；22, gutter；23, drainage pipeline.
Specific implementation mode
Below in conjunction with attached drawing, invention is further described in detail.
Present embodiment discloses a kind of well-points dewatering for deep basal pit and drainage arrangements, as shown in Figure 1, including along deep base
Cheat the 1 peripheral water header 2 being set on ground for one week, the water plug 3 being connect with water header 2, along the length of water header 2
The arrangement of degree direction and eight well-point pipes 4 for being embedded in underground straight down, pass through junction pipe phase between well-point pipe 4 and water header 2
The four direction in deep basal pit 1 is arranged in connection, eight well-point pipes 4 two-by-two, and every 4 bottom of well-point pipe, which is respectively connected with, can make water saturating
The screen pipe 5 crossed is taken out the underground water of 1 bottom of deep basal pit using water plug 3 and the screen pipe being embedded in around deep basal pit 15
From to lowering of watertable, it is to provide comparison dry execution conditions in deep basal pit 1 to make base soil consolidation, raising foundation strength.
As shown in Figure 1, deep basal pit 1 is also provided with water-stop curtain 6 in one week along inner wall, using water-stop curtain 6 to deep basal pit 1 week
The water enclosed in soil layer is completely cut off, and prevents water from being penetrated into deep basal pit 1 from 1 side wall of deep basal pit, increases 1 internal drainage of deep basal pit burden,
Influence construction.And 6 top of water-stop curtain along 1 edge of deep basal pit integrally formed with gutter 22, be fixed on 6 inner wall of water-stop curtain
The drainage pipeline 23 being connected with gutter 22.When rainwater is spread unchecked, the rainwater above 1 surrounding soil layer of deep basal pit is easy to converge in one
Cocurrent is played into deep basal pit 1, isolation guiding can be played to the rainwater above soil layer using the gutter 22 of 6 top of water-stop curtain
Effect, and rainwater is discharged into drainage pipeline 23, final import in catch pit is utilized.
As shown in Figure 2 and Figure 3, two side pipes 7 that catchment are connected with along length direction interval on every well-point pipe 4, collected
Water side pipe 7 towards the direction of deep basal pit 1 be arranged and bottom catchment side pipe 7 level height higher than deep basal pit 1 cheat bottom water
It is flat highly to offer several permeable holes 8 on the side pipe 7 that catchments, and the water excessively of permeable hole 8 can be adjusted by being additionally provided in the side pipe 7 that catchments
The regulating device 9 of area.When rainwater is spread unchecked, rainwater has little time the depths that permeates the ground, and collects in surface and the shallow-layer of soil layer, meeting
It constantly squeezes and corrodes 6 outside of water-stop curtain, water-stop curtain 6 is caused greatly to bear, utilizes water plug 3 and connected well at this time
During ponding in 6 surrounding soil layer of water-stop curtain can be pumped into and catchments side pipe 7 by the side pipe 7 that catchments of point pipe 4, water-stop curtain 6 is avoided
Because bear it is excessive occur avalanche or leakage the case where, and be vertically arranged two catchment side pipe 7 can in soil layer not
Ponding with depth is extracted, and water is made to be detached by secondary during permeating down, is reduced under 1 bottomland of deep basal pit
The formation of water.
As shown in Figure 3, Figure 4, regulating device 9 include along and catchment 7 same axial line of side pipe setting marine riser 10, with every
The lead screw 11 that water pipe 10 is connected close to the threaded one end of water-stop curtain 6.The outer wall of marine riser 10 and the inner wall for the side pipe 7 that catchments are mutual
Fitting, and offer on marine riser 10 and corresponded with permeable hole 8, the identical several adjustment holes 12 in aperture, when on marine riser 10
Adjustment hole 12 when being overlapped with the permeable hole 8 to catchment on side pipe 7, the water in soil layer just can be along permeable hole 8 and adjustment hole 12
It enters in marine riser 10；When the opposite side pipe 7 that catchments of marine riser 10 is subjected to displacement, the axial line of adjustment hole 12 and permeable hole 8
It mutually staggers, to make the discharge area of permeable hole 8 change.
As shown in Figure 3, Figure 4, water-stop curtain 6 is run through in one end that the side pipe 7 that catchments is provided with lead screw 11, and lead screw 11 is far from well
One end of point pipe 4 is welded with control lid 13, controls and is welded with control handle 14 on lid 13, enables construction personnel from water-stop curtain
6 insides are using the rotation control lid 13 of control handle 14, to drive lead screw 11 to rotate, and the outer wall of marine riser 10 and the side pipe that catchments
7 inner wall upper edge direction of axis line is respectively welded guide pad 15 and guide groove 16, is limited using guide pad 15 and guide groove 16
The direction of displacement of marine riser 10 makes marine riser 10 that can not rotate with respect to the side pipe 7 that catchment, then rotary screw rod 11 just can drive
Marine riser 10 is moved along the length direction for the side pipe 7 that catchments, and to make adjustment hole 12 be mutually staggered with permeable hole 8, it is saturating to reach adjusting
The effect of 8 discharge area of water hole, and be compared to and realize the friendship of adjustment hole 12 and permeable hole 8 by directly rotating marine riser 10
The rotary motion of lead screw 11 is converted to the linear movement of marine riser 10 by mistake, can be realized and be rotated according to the screw pitch on lead screw 11
Wide-angle and only move small distance, make adjustment process more precisely with stabilization.
As Figure 1 and Figure 4, it controls between lid 13 and the inner wall for the side pipe 7 that catchments and mechanical seal 17 is installed, utilize machinery
Sealing 17 makes the water entered in marine riser 10 that can not enter deep basal pit 1 by the gap between side pipe 7 and control lid 13 of catchmenting
In, and when using 5 groundwater abstraction of screen pipe of 4 bottom of well-point pipe, the side pipe 7 that will catchment closure can form confined space,
Ensure the pressure to catchment in side pipe 7, to enhance extraction suction of the water plug 3 to underground water.
As shown in Figure 3, Figure 4, the side pipe 7 that catchments is interior to be provided with the first locating part 18, lead screw 11 in one end of close well-point pipe 4
On be provided with the second locating part 19, the displacement of marine riser 10 can be limited using the first locating part 18 and the second locating part 19.When
When marine riser 10 is withstood under the drive of lead screw 11 on first locating part 18, permeable hole 8 is completely superposed with adjustment hole 12, is collected at this time
The water intake velocity of water side pipe 7 is most fast, permeable when then rotating backward lead screw 11 again makes marine riser 10 withstand on the second locating part 19
Hole 8 is just closed completely from being opened to, and the second locating part 19 mutually squeezes with marine riser 10 and makes lead screw 11 that can not be rotated further,
The side pipe 7 that catchments at this time can not intake.
As shown in figs. 3 and 5, it integrally formed with arrow 20 on end face of the control lid 13 far from well-point pipe 4, and catchments
Sign 21 that is arc-shaped, representing the keying situation of permeable hole 8 is coated on side pipe 7.Arrow after controlling lid 13 and rotating
20 rotate in same direction, and are directed toward position different on sign 21, display permeable hole 8 and the situation of adjustment hole 12 at this time,
Adjusting control lid 13 as the case may be is allowed the operator to, to adjust the discharge area of permeable hole 8.
This specific embodiment is only explanation of the invention, is not limitation of the present invention, people in the art
Member can as needed make the present embodiment the modification of not creative contribution after reading this specification, but as long as at this
It is all protected by Patent Law in the right of invention.
Claims (8)
1. a kind of well-points dewatering and drainage arrangement for deep basal pit, including setting is in the water header of deep basal pit (1) periphery
(2), the water plug (3) that is connect with water header (2), along water header (2) length direction arrangement and be arranged straight down
Several well-point pipes (4), further include the water-stop curtain (6) along the setting of deep basal pit (1) side wall one week, well-point pipe (4) bottom
It is provided with screen pipe (5), it is characterised in that：The direction of water-stop curtain (6) is provided with the side pipe that catchments on the well-point pipe (4)
(7), it is provided with several permeable holes (8) on the side pipe that catchments (7) and the regulating device (9) of permeable hole (8) size can be adjusted.
2. the well-points dewatering and drainage arrangement according to claim 1 for deep basal pit, it is characterised in that：The adjusting dress
It includes the marine riser (10) of side pipe (7) inner wall setting of catchmenting along same axial line, fitting to set (9), is set on the marine riser (10)
It is equipped with several adjustment holes (12) identical with permeable hole (8) one-to-one correspondence and aperture.
3. the well-points dewatering and drainage arrangement according to claim 2 for deep basal pit, it is characterised in that：The adjusting dress
It further includes the lead screw (11) being set to inside the one end of the side pipe that catchments (7) far from well-point pipe (4), the marine riser (10) to set (9)
Threaded one end be connected on lead screw (11), and the outer wall of marine riser (10) and the inner wall upper edge axial line side of side pipe (7) of catchmenting
To being respectively arranged with guide pad (15) and guide groove (16).
4. the well-points dewatering and drainage arrangement according to claim 3 for deep basal pit, it is characterised in that：The side of catchmenting
It manages the one end of (7) far from well-point pipe (4) and runs through water-stop curtain (6), the lead screw (11) is separate to fix every one end of well-point pipe (4)
There is control lid (13), control handle (14), the control lid (13) and the side pipe (7) that catchments are provided on the control lid (13)
Mechanical seal (17) is provided between inner wall.
5. the well-points dewatering and drainage arrangement according to claim 3 for deep basal pit, it is characterised in that：The side of catchmenting
One end close to well-point pipe (4) is provided with the first locating part (18) in pipe (7), the second limit is provided on the lead screw (11)
Part (19).
6. the well-points dewatering and drainage arrangement according to claim 4 for deep basal pit, it is characterised in that：The control lid
(13) it towards arrow (20) is provided on the end face of deep basal pit (1), is provided on the side pipe that catchments (7) and arrow
(20) sign (21) that is corresponding, representing permeable hole (8) keying situation.
7. the well-points dewatering and drainage arrangement according to claim 1 for deep basal pit, it is characterised in that：Any well-point pipe
(4) upper edge length direction is arranged at intervals at least two side pipes that catchment (7), and bottom catchment side pipe (7) level it is high
Level height of the degree higher than deep basal pit (1) hole bottom.
8. the well-points dewatering and drainage arrangement according to claim 1 for deep basal pit, it is characterised in that：The sealing curtain
Curtain (6) top is provided with gutter (22) along deep basal pit (1) edge, is provided on the water-stop curtain (6) and gutter (22)
Connected drainage pipeline (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810134054.5A CN108385706B (en) | 2018-02-09 | 2018-02-09 | Well point dewatering and drainage device for deep foundation pit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810134054.5A CN108385706B (en) | 2018-02-09 | 2018-02-09 | Well point dewatering and drainage device for deep foundation pit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108385706A true CN108385706A (en) | 2018-08-10 |
| CN108385706B CN108385706B (en) | 2020-04-07 |
Family
ID=63075605
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810134054.5A Active CN108385706B (en) | 2018-02-09 | 2018-02-09 | Well point dewatering and drainage device for deep foundation pit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108385706B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110424427A (en) * | 2019-07-24 | 2019-11-08 | 中国十七冶集团有限公司 | A kind of gutter and construction method in foundation pit |
| CN112267474A (en) * | 2020-11-06 | 2021-01-26 | 东莞市建安桩基础工程有限公司 | Foundation pit supporting structure and construction method thereof |
| CN117228808A (en) * | 2023-11-10 | 2023-12-15 | 深圳捷工医疗装备股份有限公司 | Sewage multistage purification treatment equipment and treatment process |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH11323949A (en) * | 1998-05-19 | 1999-11-26 | Kenichiro Hirahara | Dewatering construction method and earth retaining timbering used therefor |
| CN203924083U (en) * | 2014-06-27 | 2014-11-05 | 中国水利水电第十三工程局有限公司 | Cushion cap excavation of foundation pit well-points dewatering device |
| CN204486063U (en) * | 2015-02-02 | 2015-07-22 | 甘肃农业大学 | A kind of farmland irrigating drainage pipe |
| CN206328765U (en) * | 2016-12-19 | 2017-07-14 | 天津圣业达地基加固工程有限公司 | A kind of water drainage of deep foundation pit structure |
| CN206829181U (en) * | 2017-06-08 | 2018-01-02 | 中冶集团武汉勘察研究院有限公司 | The retaining wall sluicing pore structure of replaceable cartridge |
| CN207820759U (en) * | 2017-12-21 | 2018-09-07 | 浙江同济科技职业学院 | The water-saving pipeline being precisely controlled |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11323949A (en) * | 1998-05-19 | 1999-11-26 | Kenichiro Hirahara | Dewatering construction method and earth retaining timbering used therefor |
| CN203924083U (en) * | 2014-06-27 | 2014-11-05 | 中国水利水电第十三工程局有限公司 | Cushion cap excavation of foundation pit well-points dewatering device |
| CN204486063U (en) * | 2015-02-02 | 2015-07-22 | 甘肃农业大学 | A kind of farmland irrigating drainage pipe |
| CN206328765U (en) * | 2016-12-19 | 2017-07-14 | 天津圣业达地基加固工程有限公司 | A kind of water drainage of deep foundation pit structure |
| CN206829181U (en) * | 2017-06-08 | 2018-01-02 | 中冶集团武汉勘察研究院有限公司 | The retaining wall sluicing pore structure of replaceable cartridge |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110424427A (en) * | 2019-07-24 | 2019-11-08 | 中国十七冶集团有限公司 | A kind of gutter and construction method in foundation pit |
| CN112267474A (en) * | 2020-11-06 | 2021-01-26 | 东莞市建安桩基础工程有限公司 | Foundation pit supporting structure and construction method thereof |
| CN117228808A (en) * | 2023-11-10 | 2023-12-15 | 深圳捷工医疗装备股份有限公司 | Sewage multistage purification treatment equipment and treatment process |
| CN117228808B (en) * | 2023-11-10 | 2024-02-09 | 深圳捷工医疗装备股份有限公司 | Sewage multistage purification treatment equipment and treatment process |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108385706B (en) | 2020-04-07 |
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