CN105804105A - Precipitation well, well sealing structure for precipitation well and well covering burying and sealing method for precipitation well - Google Patents
Precipitation well, well sealing structure for precipitation well and well covering burying and sealing method for precipitation well Download PDFInfo
- Publication number
- CN105804105A CN105804105A CN201610219524.9A CN201610219524A CN105804105A CN 105804105 A CN105804105 A CN 105804105A CN 201610219524 A CN201610219524 A CN 201610219524A CN 105804105 A CN105804105 A CN 105804105A
- Authority
- CN
- China
- Prior art keywords
- well
- pit shaft
- waterproof layer
- bed course
- mouth
- 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
Classifications
-
- 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
-
- 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
- E02D19/12—Restraining of underground water by damming or interrupting the passage of underground water
- E02D19/16—Restraining of underground water by damming or interrupting the passage of underground water by placing or applying sealing substances
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (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)
- Installation Of Indoor Wiring (AREA)
Abstract
The invention discloses a precipitation well, a well sealing structure for the precipitation well and a well covering burying and sealing method for the precipitation well. The well covering burying and sealing method for the precipitation well comprises the steps that 1, a through opening is formed in the side wall of a wellbore to enable an electric wire of a submersible pump and a water outlet pipe inside the wellbore to penetrate out and extend out of a foundation pit through the through opening, a ventilation and drainage pipe is arranged in the through opening at the same time, one end of the ventilation and drainage pipe extends to a well opening, and the other end of the ventilation and drainage pipe extends out of the foundation pit; 2, an upper end opening of the wellbore is covered with a cover plate, a cushion layer of an upper building foundation is poured on the cover plate, then a waterproof layer is poured on the cushion layer, and an upper building foundation raft slab is constructed on the waterproof layer finally; and 3, after precipitation is completed, a power source is cut off, cement paste is injected into the wellbore through the water outlet pipe, the space inside the wellbore is occupied by the cement paste, and air and water inside the wellbore are discharged through the ventilation and drainage pipe. According to the precipitation well, the well sealing structure for the precipitation well and the well covering burying and sealing method for the precipitation well, the cushion layer, the waterproof layer and the foundation raft slab are all integrated, and the integrity of all the layers is maintained; and meanwhile, the construction difficulty is lowered, the processes are decreased, the cost is reduced, and the construction period is shortened.
Description
Technical field
The present invention relates to a kind of dewatering well, belong to a kind of construction structure, meanwhile, the invention still further relates to the lid embedding well method of the shut-in well structure of this dewatering well and this dewatering well.
Background technology
Dewatering well of the prior art is typically all structure as shown in Figure 1, including the well body being arranged in foundation ditch, well body is provided with pit shaft 2, pit shaft 2 is provided with immersible pump 3, epimere at pit shaft 2 is inserted with steel pile casting 4, the epimere of steel pile casting 4 stretches out pit shaft 2, electric wire 11 and the outlet pipe 12 of immersible pump 3 are stretched out by the upper port of steel pile casting, bed course 5 it is provided with bottom foundation ditch, the top of bed course 5 is provided with waterproof layer 6, it is provided above Base isolation system 7 at waterproof layer 6, Base isolation system 7 is stretched out in the upper end of steel pile casting 4, steel pile casting 4 stretches out and is fixed with two seal rings 8 on the outer peripheral face of the part of pit shaft 2, one seal ring 8 is in Base isolation system, another seal ring 8 is in waterproof layer.After precipitation completes, take out rapidly immersible pump, then, in pit shaft 2, insert below sandstone 9 to base surface, then to casting concrete 10 in well body, the end face of concrete 10 is lower than 20cm below the end face of Base isolation system, in the endoporus of steel pile casting 4, seal weld connects the steel plate 1 sealed up by the endoporus of steel pile casting 4, and steel plate 1, for sealing, finally continues casting concrete layer at steel plate more than 1, the material that this shut-in well method needs is more, relatively costly；It addition, because to bury steel pile casting underground, it is necessary to reserve construction hole on bed course, waterproof layer and Base isolation system, be unfavorable for keeping the globality of each layer, increase difficulty of construction, add operation, to expend man-hour more.Meanwhile, at Precipitation Process, because not positioning, the electric wire of immersible pump is prone to the edge friction with steel pile casting, it is easy to causes insulation rubber cracking, adds the danger of electric wire electric leakage and basis of formation raft strip electricity.
Summary of the invention
It is an object of the invention to provide a kind of dewatering well, to solve in prior art because to bury steel pile casting underground, need on bed course, waterproof layer and Base isolation system, reserve construction hole, it is unfavorable for keeping the globality of each layer, increase difficulty of construction, add operation, expend more problem in man-hour, meanwhile, the present invention also aims to improve the lid embedding well method of the shut-in well structure of this dewatering well and this dewatering well.
In order to realize object above, the dewatering well of the present invention adopts the following technical scheme that a kind of dewatering well, including the well body being arranged in foundation ditch, in well body, there is pit shaft, the upper port of pit shaft is covered with cover plate, cover plate is provided above the bed course on building basis, bed course be provided above waterproof layer, the Base isolation system being provided above building of waterproof layer, bed course, the all disposable integral construction of waterproof layer and Base isolation system, the sidewall at pit shaft upper port place offers through mouth, it is provided with immersible pump in well body, the electric wire of immersible pump and outlet pipe are passed by through mouth and stretch out foundation ditch, in mouth, it is additionally provided with one end extends in well head, the other end stretches out the ventilation bar water pipe of foundation ditch.
Described electric wire, outlet pipe and the equal level of ventilation bar water pipe are stretched to foundation pit side-wall and stretch out along foundation pit side-wall.
The diameter of described cover plate is more than the external diameter of pit shaft.
The shut-in well structure of the dewatering well of the present invention adopts the following technical scheme that
A kind of shut-in well structure of dewatering well, including the well body being arranged in foundation ditch, in well body, there is pit shaft, the upper port of pit shaft is covered with cover plate, cover plate is provided above the bed course on building basis, bed course be provided above waterproof layer, the Base isolation system being provided above building of waterproof layer, bed course, waterproof layer and Base isolation system each extend to foundation pit side-wall place, the sidewall at pit shaft upper port place offers through mouth, it is provided with immersible pump in well body, the electric wire of immersible pump and outlet pipe are passed by through mouth and stretch out foundation ditch, in mouth, it is additionally provided with one end extends in well head, the other end stretches out the ventilation bar water pipe of foundation ditch, fill out in pit shaft and be provided with cement structures.
Described electric wire, outlet pipe and the equal level of ventilation bar water pipe are stretched to foundation pit side-wall and stretch out along foundation pit side-wall.
The diameter of described cover plate is more than the external diameter of pit shaft.
The lid embedding well method of the dewatering well of the present invention adopts the following technical scheme that
A kind of lid embedding well method of dewatering well, first on the sidewall at the upper port place of the pit shaft of dewatering well, offer a traverse mouth, allow the electric wire of immersible pump in pit shaft with outlet pipe by passing through mouth and stretching out foundation ditch, ventilation bar water pipe is being set in mouth simultaneously, one end of ventilation bar water pipe extends in well head, the other end stretches out foundation ditch, then at the upper port upper cover upper cover plate of pit shaft, on the cover board side builds the bed course on building basis, then waterproof layer on building above bed course, the Base isolation system of building on finally constructing above waterproof layer, bed course, waterproof layer and Base isolation system are all constructed foundation pit walls place；After precipitation completes, being cut off by electric wire, and inject cement mortar in pit shaft by outlet pipe, cement mortar occupies the space in pit shaft, and the air in pit shaft and water can be discharged by ventilation bar water pipe.
Described cement mortar is the cement mortar of 1:0.5 ~ 1:1 ratio of mud.
Described cement mortar is the cement mortar of the 1:0.6 ratio of mud.
Described electric wire, outlet pipe and the equal level of ventilation bar water pipe are stretched to foundation pit side-wall and stretch out along foundation pit side-wall.
The upper port of the pit shaft of the present invention is covered with cover plate, it is provided above bed course, waterproof layer and Base isolation system at cover plate, owing to pit shaft being not provided with steel pile casting upwards, bed course, waterproof layer and what Base isolation system was all integrated, the hole passed for steel pile casting need not be set, maintain the globality of each layer, reduce difficulty of construction, decrease operation, provide cost savings, shorten the duration.
Simultaneously, the electric wire of the immersible pump of dewatering well and outlet pipe are passed and stretch out foundation ditch, electric wire and outlet pipe by traverse mouth and can be arranged in bed course, waterproof layer and Base isolation system, have good location, will not rub with anything, greatly reduce the danger of electric wire electric leakage.Extend in well head owing to being additionally provided with one end in mouth, the other end stretches out the ventilation bar water pipe of foundation ditch, after precipitation completes, electric wire is cut off, and in pit shaft, injecting cement mortar by outlet pipe, cement mortar occupies the space in pit shaft, and the air in pit shaft and water can be discharged by ventilation bar water pipe, the completely enclosed time of dewatering well is short, closes reliable.
Accompanying drawing explanation
Fig. 1 is the shut-in well structure of dewatering well of the prior art；
Fig. 2 is the overall structure schematic diagram of the dewatering well of the embodiment of the present invention.
Detailed description of the invention
The embodiment of a kind of dewatering well, in FIG, its well body is arranged in foundation ditch, is provided with pit shaft 1 in well body, is covered with cover plate 2 in the upper port of pit shaft 1, and the diameter of cover plate 2 is more than the external diameter of pit shaft 1.The bed course 3 being provided above building basis of cover plate 2, bed course 3 be provided above waterproof layer 4, the Base isolation system 5 being provided above building of waterproof layer 4, the all disposable integral construction of bed course 3, waterproof layer 4 and Base isolation system 5, it is all that continuous print is overall, and bed course 3, waterproof layer 4 and Base isolation system 5 each extend to foundation pit side-wall place.The sidewall at the upper port place of pit shaft 1 offers through mouth, being provided with immersible pump 6 in well body, the electric wire 7 of immersible pump 6 and outlet pipe 8 are passed by through mouth and stretch out foundation ditch, are additionally provided with ventilation bar water pipe 9 in mouth, one end of ventilation bar water pipe 9 extends in well head, and the other end stretches out foundation ditch.Electric wire 7, outlet pipe 8 and the equal level of ventilation bar water pipe 9 are stretched to foundation pit side-wall and stretch out along foundation pit side-wall.
The embodiment of the shut-in well structure of a kind of dewatering well, in conjunction with Fig. 1, its well body is arranged in foundation ditch, is provided with pit shaft 1 in well body, is covered with cover plate 2 in the upper port of pit shaft 1, and the diameter of cover plate 2 is more than the external diameter of pit shaft 1.Cover plate 2 is provided above the bed course 3 on building basis, bed course 3 be provided above waterproof layer 4, the Base isolation system 5 being provided above building of waterproof layer 4, the all disposable integral construction of bed course 3, waterproof layer 4 and Base isolation system 5, it is all that continuous print is overall, and bed course 3, waterproof layer 4 and Base isolation system 5 each extend to foundation pit side-wall place.The sidewall at the upper port place of pit shaft 1 offers through mouth, being provided with immersible pump 6 in well body, the electric wire 7 of immersible pump 6 and outlet pipe 8 are passed by through mouth and stretch out foundation ditch, are additionally provided with ventilation bar water pipe 9 in mouth, one end of ventilation bar water pipe 9 extends in well head, and the other end stretches out foundation ditch.Electric wire 7, outlet pipe 8 and the equal level of ventilation bar water pipe 9 are stretched to foundation pit side-wall and stretch out along foundation pit side-wall.Filling out in pit shaft 1 and be provided with cement structures, cement structures here is the structure that cement slurry sets is formed.
A kind of embodiment of the lid embedding well method of dewatering well, in conjunction with Fig. 1, first on the sidewall at the upper port place of the pit shaft 1 of dewatering well, offer a traverse mouth, allow the electric wire 7 of immersible pump 6 in pit shaft 1 with outlet pipe 8 by passing through mouth and stretching out foundation ditch, ventilation bar water pipe 9 is being set in mouth simultaneously, one end of ventilation bar water pipe 9 extends in well head, and the other end stretches out foundation ditch, and electric wire 7, outlet pipe 8 and the equal level of ventilation bar water pipe 9 are stretched to foundation pit side-wall and stretch out along foundation pit side-wall；Then at the upper port upper cover upper cover plate 2 of pit shaft 1, the diameter of cover plate 2 is more than the external diameter of pit shaft 1.The bed course 3 on building basis is built above cover plate 2, then above bed course 3, build waterproof layer 4, the Base isolation system 5 of building on finally constructing above waterproof layer 4, bed course 3, waterproof layer 4 and Base isolation system 5 are continuous print, and bed course 3, waterproof layer 4 and Base isolation system 5 each extend to foundation pit side-wall place, all disposable integral construction, is all that continuous print is overall；After precipitation completes, electric wire 7 is cut off, and in pit shaft 7, inject cement mortar by outlet pipe 8 and fill up, it is prevented that borehole collapse.Cement mortar occupies the space in pit shaft 1, and the air in pit shaft 1 and water can pass through ventilation bar water pipe 9 and discharge.Through after a period of time, the space that cement mortar will solidify well body is filled up.Here cement mortar is the cement mortar of the 1:0.6 ratio of mud.
Cement mortar in the present embodiment is the cement mortar of the 1:0.6 ratio of mud, and the ratio of mud of cement mortar can select in 1:0.5 ~ 1:1 in other embodiments.
The ratio of mud of the cement mortar in the present embodiment can also be any ratio conventional in construction.
Above-described embodiment is that protection scope of the present invention is not limited to above-mentioned restriction, and any scheme to obtaining after simple transformation of the present invention also belongs to protection scope of the present invention in conjunction with the accompanying drawing introduction to the present invention.
Claims (10)
1. a dewatering well, it is characterized in that: include the well body being arranged in foundation ditch, in well body, there is pit shaft, the upper port of pit shaft is covered with cover plate, cover plate is provided above the bed course on building basis, bed course be provided above waterproof layer, the Base isolation system being provided above building of waterproof layer, bed course, the all disposable integral construction of waterproof layer and Base isolation system, the sidewall at pit shaft upper port place offers through mouth, it is provided with immersible pump in well body, the electric wire of immersible pump and outlet pipe are passed by through mouth and stretch out foundation ditch, in mouth, it is additionally provided with one end extends in well head, the other end stretches out the ventilation bar water pipe of foundation ditch.
2. dewatering well according to claim 1, it is characterised in that: described electric wire, outlet pipe and the equal level of ventilation bar water pipe are stretched to foundation pit side-wall and stretch out along foundation pit side-wall.
3. dewatering well according to claim 1 and 2, it is characterised in that: the diameter of described cover plate is more than the external diameter of pit shaft.
4. the shut-in well structure of a dewatering well, it is characterized in that: include the well body being arranged in foundation ditch, in well body, there is pit shaft, the upper port of pit shaft is covered with cover plate, cover plate is provided above the bed course on building basis, bed course be provided above waterproof layer, the Base isolation system being provided above building of waterproof layer, bed course, the all disposable integral construction of waterproof layer and Base isolation system also extends to foundation pit side-wall place, the sidewall at pit shaft upper port place offers through mouth, it is provided with immersible pump in well body, the electric wire of immersible pump and outlet pipe are passed by through mouth and stretch out foundation ditch, in mouth, it is additionally provided with one end extends in well head, the other end stretches out the ventilation bar water pipe of foundation ditch, fill out in pit shaft and be provided with cement structures.
5. the shut-in well structure of dewatering well according to claim 4, it is characterised in that: described electric wire, outlet pipe and the equal level of ventilation bar water pipe are stretched to foundation pit side-wall and stretch out along foundation pit side-wall.
6. the shut-in well structure of the dewatering well according to claim 4 or 5, it is characterised in that: the diameter of described cover plate is more than the external diameter of pit shaft.
7. the lid embedding well method of a dewatering well, it is characterized in that: on the sidewall at the upper port place of the pit shaft of dewatering well, first offer a traverse mouth, allow the electric wire of immersible pump in pit shaft with outlet pipe by passing through mouth and stretching out foundation ditch, ventilation bar water pipe is being set in mouth simultaneously, one end of ventilation bar water pipe extends in well head, the other end stretches out foundation ditch, then at the upper port upper cover upper cover plate of pit shaft, on the cover board side builds the bed course on building basis, then waterproof layer on building above bed course, the last Base isolation system of construction building thing above waterproof layer, bed course, waterproof layer and Base isolation system are all constructed foundation pit walls place；After precipitation completes, by dump, and injecting cement mortar in pit shaft by outlet pipe, cement mortar occupies the space in pit shaft, and the air in pit shaft and water can be discharged by ventilation bar water pipe.
8. lid embedding well method according to claim 7, it is characterised in that: described cement mortar is the cement mortar of 1:0.5 ~ 1:1 ratio of mud.
9. lid embedding well method according to claim 7, it is characterised in that: described cement mortar is the cement mortar of the 1:0.6 ratio of mud.
10. the lid embedding well method according to claim 7 or 8 or 9, it is characterised in that: described electric wire, outlet pipe and the equal level of ventilation bar water pipe are stretched to foundation pit side-wall and stretch out along foundation pit side-wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610219524.9A CN105804105A (en) | 2016-04-11 | 2016-04-11 | Precipitation well, well sealing structure for precipitation well and well covering burying and sealing method for precipitation well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610219524.9A CN105804105A (en) | 2016-04-11 | 2016-04-11 | Precipitation well, well sealing structure for precipitation well and well covering burying and sealing method for precipitation well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105804105A true CN105804105A (en) | 2016-07-27 |
Family
ID=56459948
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610219524.9A Pending CN105804105A (en) | 2016-04-11 | 2016-04-11 | Precipitation well, well sealing structure for precipitation well and well covering burying and sealing method for precipitation well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105804105A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106638642A (en) * | 2017-02-21 | 2017-05-10 | 潍坊市宏源防水材料有限公司 | Underground building pit body waterproof construction precipitation treating method |
| CN106894431A (en) * | 2017-02-21 | 2017-06-27 | 潍坊市宏源防水材料有限公司 | Hypogee hole body waterproof construction precipitation processing method under a kind of water resource enriched environment |
| CN117947803A (en) * | 2023-06-16 | 2024-04-30 | 广东英聚建筑工程有限公司 | Water pumping type dewatering well, construction method and reconstruction method of dewatering well |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4260334A (en) * | 1976-02-11 | 1981-04-07 | Kelley Contract Dewatering Company | Ground dewatering system |
| CN101705691A (en) * | 2009-10-30 | 2010-05-12 | 南通建工集团股份有限公司 | Construction method of dewatering well under foundation slab in foundation pit |
| CN101936010A (en) * | 2010-08-19 | 2011-01-05 | 天津二十冶建设有限公司 | Construction method of dewatering well in underground concrete structure |
| CN202787289U (en) * | 2012-07-29 | 2013-03-13 | 山西四建集团有限公司 | Shut-in dewatering device for tube well |
| CN204715384U (en) * | 2015-06-12 | 2015-10-21 | 山西四建集团有限公司 | To shunt in a well under substrate dewatering device |
-
2016
- 2016-04-11 CN CN201610219524.9A patent/CN105804105A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4260334A (en) * | 1976-02-11 | 1981-04-07 | Kelley Contract Dewatering Company | Ground dewatering system |
| CN101705691A (en) * | 2009-10-30 | 2010-05-12 | 南通建工集团股份有限公司 | Construction method of dewatering well under foundation slab in foundation pit |
| CN101936010A (en) * | 2010-08-19 | 2011-01-05 | 天津二十冶建设有限公司 | Construction method of dewatering well in underground concrete structure |
| CN202787289U (en) * | 2012-07-29 | 2013-03-13 | 山西四建集团有限公司 | Shut-in dewatering device for tube well |
| CN204715384U (en) * | 2015-06-12 | 2015-10-21 | 山西四建集团有限公司 | To shunt in a well under substrate dewatering device |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106638642A (en) * | 2017-02-21 | 2017-05-10 | 潍坊市宏源防水材料有限公司 | Underground building pit body waterproof construction precipitation treating method |
| CN106894431A (en) * | 2017-02-21 | 2017-06-27 | 潍坊市宏源防水材料有限公司 | Hypogee hole body waterproof construction precipitation processing method under a kind of water resource enriched environment |
| CN106894431B (en) * | 2017-02-21 | 2019-08-27 | 宏源防水科技集团有限公司 | Hypogee pit body waterproof construction precipitation processing method under a kind of water resource enriched environment |
| CN106638642B (en) * | 2017-02-21 | 2019-08-27 | 宏源防水科技集团有限公司 | A kind of hypogee pit body waterproof construction precipitation processing method |
| CN117947803A (en) * | 2023-06-16 | 2024-04-30 | 广东英聚建筑工程有限公司 | Water pumping type dewatering well, construction method and reconstruction method of dewatering well |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202047416U (en) | Well sealing device of pressure-reducing and dewatering well at elevator well pit | |
| CN102797266B (en) | Well sealing waterproof construction method for dewatering well | |
| CN109736340B (en) | Dewatering device and method for guaranteeing integrity of cushion layer by reserving dewatering well on foundation slab | |
| CN107326918B (en) | Hidden type plugging impervious water collecting well penetrating through raft plates and construction process thereof | |
| CN103924987B (en) | A kind of SMW engineering method stake tunnel shielding portal seepage-proof structure and construction method thereof | |
| CN203569578U (en) | Recharge well capable of preventing well casing blocking and water bursting | |
| CN104963324B (en) | A kind of diversion tunnel block head exhaust structure and its method for exhausting | |
| CN102787602A (en) | Curtain grouting technique | |
| CN206916753U (en) | A kind of water sealing structure of diaphram wall and its seam crossing | |
| CN106522252A (en) | Seepage-proofing blocking mechanism and method for deep foundation pit raft dewatering well | |
| CN209339169U (en) | A kind of precipitation well in foundation pit plugging device | |
| CN105804105A (en) | Precipitation well, well sealing structure for precipitation well and well covering burying and sealing method for precipitation well | |
| CN212129150U (en) | Deep basal pit precipitation well block structure | |
| CN203238649U (en) | Combined type waterproof curtain | |
| CN202730786U (en) | Well-sealing waterproof construction structure of dewatering well | |
| CN105133619B (en) | Elevator construction method of deep foundation ditch | |
| CN105350554A (en) | High-water-level foundation pit dewatering construction method | |
| CN206385557U (en) | The water-impervious plugging mechanism of dewatering well on deep basal pit raft plate | |
| CN106088123A (en) | A kind of sand geology steel tube well fall water level device and construction method thereof | |
| CN111411639B (en) | Shallow foundation pit dewatering construction method for water-rich pebble layer | |
| CN209457056U (en) | A kind of anti-float anchor rod that reduces is to the connecting node of pond baseboard horizontal restraint | |
| CN104060622A (en) | Method for discharging water in pint through steel bucket in pit | |
| CN203514332U (en) | Casing for blocking dewatering tube well of post-cast strip | |
| CN204023592U (en) | The advanced quick blocking structure of a kind of foundation ditch drainage well | |
| CN206457835U (en) | A kind of open caisson |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160727 |