CN110004935A - A kind of locally deep pit drain measure trench system and construction method - Google Patents
A kind of locally deep pit drain measure trench system and construction method Download PDFInfo
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- CN110004935A CN110004935A CN201910323484.6A CN201910323484A CN110004935A CN 110004935 A CN110004935 A CN 110004935A CN 201910323484 A CN201910323484 A CN 201910323484A CN 110004935 A CN110004935 A CN 110004935A
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- sump
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- 238000010276 construction Methods 0.000 title claims abstract description 19
- 238000001556 precipitation Methods 0.000 claims abstract description 48
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 44
- 239000011148 porous material Substances 0.000 claims description 9
- 239000003673 groundwater Substances 0.000 claims description 8
- 238000009412 basement excavation Methods 0.000 claims description 6
- 239000004744 fabric Substances 0.000 claims description 5
- 239000004677 Nylon Substances 0.000 claims description 3
- 238000005266 casting Methods 0.000 claims description 3
- 229920001778 nylon Polymers 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 9
- 239000004576 sand Substances 0.000 description 5
- 239000002689 soil Substances 0.000 description 4
- 239000004575 stone Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 102000002322 Egg Proteins Human genes 0.000 description 2
- 108010000912 Egg Proteins Proteins 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 210000004681 ovum Anatomy 0.000 description 2
- 230000007480 spreading Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000009189 diving Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
-
- 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
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/02—Improving by compacting
- E02D3/10—Improving by compacting by watering, draining, de-aerating or blasting, e.g. by installing sand or wick drains
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Paleontology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Agronomy & Crop Science (AREA)
- Soil Sciences (AREA)
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Abstract
A kind of locally deep pit drain measure trench system of the invention and construction method, are related to foundation pit Yield rainfall relation technical field, for solving the problems, such as that precipitation foundation pit area is big and the Yield rainfall relation construction of dewatering well should not be arranged in foundation pit.It includes the drainage groove for needing connection and reasonable arrangement spacing in precipitation foundation pit, and drainage layer, drainpipe, sandstone and concrete cushion are successively arranged in drainage groove, and drainage layer is wrapped on the outside of drainpipe；Drainage groove both ends are equipped with sump, are equipped with immersible pump in sump, for taking out drop underground.Underground water penetrates into the drainpipe in drainage groove by the drainage layer in drainage groove, then underground water is pooled in the sump of drainage groove end setting by drainpipe, draws water in sump installing submersible pump, reaches the requirement for reducing underground water.It not only can reach the precipitation requirement of different zones difference height difference, and be not to take out and drop excessive underground water, engineering cost can be reduced using this precipitation method.
Description
Technical field
The present invention relates to foundation pit Yield rainfall relation technical field, in particular to a kind of locally deep pit drain measure trench system and construction
Method.
Background technique
A large amount of elevators, catch pit etc. are equipped with compared with depth and the larger foundation pit of area, generally in current raft foundation of high-rise building basis
Deepen 2~4 meters than bottom plate, this position difficulty in construction is larger, and there are many problems such as base pit dewatering difficulty.Not such as precipitation
When being easy to phenomena such as foundation pit collapse, drift sand, soil disturbance occur, domatic not can guarantee, and handling bad will have a direct impact on ground
Bearing capacity, or even to subsequent waterproof, underplate concrete construction causes the loss for being difficult to make up.
Therefore, how a kind of locally deep pit drain measure trench system and construction method are provided, precipitation foundation pit area is applied to
The Yield rainfall relation construction of dewatering well should not be set greatly and in foundation pit, water level for local deep foundation pit precipitation is enabled to pass through construction technology safety
The technical issues of efficiently realizing, being those skilled in the art's urgent need to resolve.
Summary of the invention
It is an object of that present invention to provide a kind of locally deep pit drain measure trench system and construction methods, in foundation pit, arrangement
The gutter of reasonable spacing, by needing the height of precipitation to determine, underground water penetrates into buried depth by the drainage layer in gutter
In PVC drain pipe in ditch, then by drainpipe by underground water be pooled to positioned at gutter end setting sump, catchmenting
Well installing submersible pump draws water, and reaches the requirement for reducing underground water.Gutter spacing is true according to precipitation height and the precipitation gradient
It is fixed, by reasonable Arrangement gutter, it can reach the precipitation requirement of different zones difference height difference, and under being not to take out drop too much
Water can reduce engineering cost using this precipitation method.
The technical solution adopted by the present invention to solve the technical problems is:
A kind of locally deep pit drain measure trench system, including need preset several drainage grooves, the row at precipitation foundation pit
Drainage layer, drainpipe, sandstone and concrete cushion are successively arranged in water groove, the drainage layer is wrapped in outside the drainpipe
Side；The drainage groove both ends are equipped with sump, are equipped with immersible pump in the sump, for taking out drop underground water.
Compared with prior art, the present invention is beneficial has the technical effect that
One, locally deep pit drain measure trench system of the invention and construction method, in foundation pit, the row of connection and reasonable arrangement spacing
Water groove is successively arranged drainage layer, drainpipe, sandstone and concrete cushion in drainage groove, and drainage layer is wrapped in drainpipe
Outside；Drainage groove both ends are equipped with sump, are equipped with immersible pump in sump, for taking out drop underground.Underground water is by gutter
Drainage layer in slot is penetrated into the drainpipe in drainage groove, then underground water is pooled to positioned at drainage groove end by drainpipe
It in the sump of portion's setting, draws water in sump installing submersible pump, reaches the requirement for reducing underground water.By to foundation pit earth
Body part reasonable Arrangement drainage groove, drainage groove spacing is determining according to precipitation height and the precipitation gradient, the cloth in drainage groove
Drainage layer and drainpipe are set, sump is set at drainage groove both ends, can reach the precipitation requirement of different zones difference height difference, again
It is not to take out and drops excessive underground water, engineering cost can be reduced using this precipitation method.
Two, locally deep pit drain measure trench system of the invention and construction method, constructing operation is simple, and effect is obvious, saves
When less manpower, the dewatering effect of foundation pit can be guaranteed by increasing and decreasing the item number of drainage groove, be easy to accurately control precipitation height,
By determining the row's of rising height of sump immersible pump, automatic drop row underground water guarantees the height for reducing underground water, not super drop underground
Water level does not allow level of ground water higher yet, realizes accurate control.
Further, the drainage layer includes the different rubble of diameter and thin cobble, wherein the thin cobble covers completely
The drainpipe is covered, rubble is located at the thin cobble periphery.By the way that rubble and thin cobble is arranged in drainpipe periphery, thus
Drainage layer is formed, so that after underground water first passes through the drainage layer in drainage groove, then penetrate into the drainpipe in drainage groove, from
And phenomena such as realizing that not super drop level of ground water does not allow level of ground water higher yet, reducing drift sand, soil disturbance.
Further, in order to draw materials conveniently, saving cost, the drainpipe is PVC drain pipe, meanwhile, in order to extend row
The service life of water pipe improves durability, described one of thick nylon net cloth of PVC drain pipe outer wall wrapping.
Further, the drainpipe locally opens up pore, and the pore aperture is 20mm.The filtered underground of drainage layer
Water enters drainpipe by pore, and flows through the sump of drainpipe end, is finally extracted out by immersible pump, reaches reduction underground water
Requirement.
Further, the sump uses finished diameter assembled for 1 meter of Prefabricated Concrete pipe.It is spelled using Prefabricated Concrete pipe
Dress forms sump, prefabricated pipe can direct code build spreading to excavation of foundation pit face or more, prefabricated pipe is directly placed at excavation sump
In the sand stone layer of bottom, it is convenient to construct.
Further, it is contemplated that force stability and rigidity requirement, the concrete cushion is with a thickness of 100mm.
Further, the spacing of the drainage groove is determined according to precipitation height and the precipitation gradient, and the precipitation gradient is
1/10~1/15.By the spacing and buried depth between rational deployment adjacent drainage channel groove, it is different high to can reach different zones
The precipitation requirement of difference, and be not to take out and drop excessive underground water, engineering cost can be reduced using this precipitation method.
The present invention also provides a kind of construction method of locally deep pit drain measure trench system, which includes:
Excavate the above pit earthwork of level of ground water, drainage groove line setting, mechanical excavation drainage groove, installing submersible pump
It takes out and bright arranges casual water in drainage trenching slot；
It is laid with rubble in drainage groove, places PVC drain pipe, and the PVC drain pipe is covered using thin cobble；
Drainage groove is backfilled using sandstone；
Casting concrete bed course；
The sump assembled by Prefabricated Concrete pipe is installed at drainage groove both ends, and installing submersible pump takes out drop underground in sump
Water.
Further, in order to meet the precipitation requirement of different zones difference height difference, construction cost, the drainage groove are saved
The depth of burying need the depth of precipitation to determine by foundation pit, different precipitation depth areas, the settable difference of drainage groove bottom absolute altitude.
Detailed description of the invention
Fig. 1 is the schematic cross-section of locally deep pit drain measure trench system in one embodiment of the invention；
Fig. 2 is the structural schematic diagram of drainpipe in locally deep pit drain measure trench system in one embodiment of the invention；
Fig. 3 is the schematic cross-section of drainpipe in locally deep pit drain measure trench system in one embodiment of the invention；
Fig. 4 is the setting schematic diagram of drainage groove in locally deep pit drain measure trench system in one embodiment of the invention.Figure
In:
1- concrete cushion；2- sandstone；3- rubble；The thin cobble of 4-；5- drainpipe, 51- pore；6- screen cloth；7- draining
Groove；The 8- precipitation gradient；9- needs precipitation foundation pit.
Specific embodiment
It to a kind of locally deep pit drain measure trench system proposed by the present invention and is applied below in conjunction with the drawings and specific embodiments
Work method is described in further detail.According to following explanation, advantages and features of the invention will be become apparent from.It below will be by listed
For embodiment combination attached drawing, the technology contents and feature that the present invention will be described in detail.Need in addition it illustrate, attached drawing is all made of non-
Often simplified form and non-accurate ratio is used, only for the purpose of facilitating and clarifying the purpose of the embodiments of the invention.
For sake of convenience, "upper" described below, "lower" are consistent with the upper and lower direction of attached drawing, but this can't be skill of the present invention
The limitation of art scheme.
Embodiment one
Illustrate the structure composition of locally deep pit drain measure trench system of the invention in conjunction with Fig. 1 to Fig. 4.
Please refer to figs. 1 to 4, a kind of locally deep pit drain measure trench system, including needs preset several at precipitation foundation pit 9
Drainage groove 7 is successively arranged drainage layer, drainpipe 5, sandstone 2 and concrete cushion 1 in drainage groove 7, and drainage layer is wrapped in
5 outside of drainpipe；7 both ends of drainage groove are equipped with sump, are equipped with immersible pump in sump, for taking out drop underground water.
Specifically, locally deep pit drain measure trench system of the invention is needing connection and reasonable arrangement spacing at precipitation foundation pit 9
Drainage groove 7 is successively arranged drainage layer, drainpipe 5, sandstone 2 and concrete cushion 1 in drainage groove 7, and drainage layer is wrapped in
5 outside of drainpipe；7 both ends of drainage groove are equipped with sump, are equipped with immersible pump in sump, for taking out drop underground.Underground water warp
It crosses the drainage layer in drainage groove 7 to penetrate into the drainpipe 5 in drainage groove, then is collected underground water in place by drainpipe 5
It in the sump of drainage groove end setting, draws water in sump installing submersible pump, reaches the requirement for reducing underground water.
By the way that soil mass of foundation pit part reasonable Arrangement drainage groove 7,7 spacing of drainage groove is determined according to precipitation height and the precipitation gradient,
Drainage layer and drainpipe 5 are arranged in drainage groove 7, and sump is set at 7 both ends of drainage groove, can reach different zones difference
The precipitation requirement of height difference, and be not to take out and drop excessive underground water, it realizes accurate control, engineering can be reduced using this precipitation method
Cost.
In the present embodiment, it is highly preferred that drainage layer includes the different rubble 3 and thin cobble 4 of diameter, wherein thin ovum
Drainpipe 5 is completely covered in stone 4, and rubble 3 is located at thin 4 periphery of cobble.By in 5 periphery setting rubble 3 of drainpipe and thin ovum
Stone 4, so that drainage layer is formed, so that after underground water first passes through the drainage layer in drainage groove 7, then penetrate into drainage groove 7
In drainpipe 5, to realize phenomena such as not super drop level of ground water does not allow level of ground water higher yet, reduces drift sand, soil disturbance.
In the present embodiment, it is highly preferred that in order to draw materials conveniently, cost is saved, drainpipe 5 is PVC drain pipe, meanwhile,
In order to extend the service life of drainpipe 5, durability, one of thick nylon net cloth 6 of PVC drain pipe outer wall wrapping are improved.
In the present embodiment, it is highly preferred that 5 part of drainpipe opens up pore 51, pore aperture is 20mm, and along draining
The setting of 5 one-week interval of pipe.The filtered underground water of drainage layer enters drainpipe 6 by pore 51, and flows through drainpipe end
Sump is finally extracted out by immersible pump, and the requirement for reducing underground water is reached.
In the present embodiment, it is highly preferred that sump uses finished diameter assembled for 1 meter of Prefabricated Concrete pipe.Using
Prefabricated Concrete pipe assembly formed sump, prefabricated pipe can direct code build spreading to excavation of foundation pit face more than, prefabricated pipe is directly placed at
In the sand stone layer for excavating bottom of catchmenting, it is convenient to construct.
In the present embodiment, more preferably, it is contemplated that force stability and rigidity requirement, concrete cushion 1 with a thickness of
100mm。
In the present embodiment, it is highly preferred that the spacing of drainage groove 7 is determined according to precipitation height and the precipitation gradient 8, precipitation
The gradient 8 is 1/10~1/15.By the spacing and buried depth between rational deployment adjacent drainage channel groove 7, not same district can reach
The precipitation requirement of domain difference height difference, and be not to take out and drop excessive underground water, engineering cost can be reduced using this precipitation method.
Please continue to refer to Fig. 1 to Fig. 4, the present invention also provides a kind of construction parties of locally deep pit drain measure trench system
Method, the construction method include:
Excavate the above pit earthwork of level of ground water, 7 line setting of drainage groove, mechanical excavation drainage groove 7, installation diving
Pumping is bright to arrange casual water in drainage trenching slot 7；
It is laid with rubble 3 in drainage groove 7, places PVC drain pipe, and PVC drain pipe is covered using thin cobble 4；
Drainage groove 7 is backfilled using sandstone 2；
Casting concrete bed course 1；
The sump assembled by Prefabricated Concrete pipe is installed at 7 both ends of drainage groove, and installing submersible pump takes out drop ground in sump
It is lauched.
In the present embodiment, it is highly preferred that in order to meet the precipitation requirement of different zones difference height difference, saving is constructed into
This, the depth of burying of drainage groove 7 needs the depth of precipitation to determine by foundation pit, different precipitation depth areas, 7 bottom of drainage groove mark
High settable difference.
Foregoing description is only the description to present pre-ferred embodiments, not to any restriction of the scope of the invention, this hair
Any change, the modification that the those of ordinary skill in bright field does according to the disclosure above content, belong to the protection of claims
Range.
Claims (9)
1. a kind of locally deep pit drain measure trench system, which is characterized in that including needing preset several gutters at precipitation foundation pit
Slot is successively arranged drainage layer, drainpipe, sandstone and concrete cushion in the drainage groove, and the drainage layer is wrapped in institute
It states on the outside of drainpipe；The drainage groove both ends are equipped with sump, are equipped with immersible pump in the sump, for taking out drop underground
Water.
2. locally deep pit drain measure trench system according to claim 1, which is characterized in that the drainage layer includes diameter
Different rubbles and thin cobble, wherein the drainpipe is completely covered in the thin cobble, and rubble is located at outside the thin cobble
It encloses.
3. locally deep pit drain measure trench system according to claim 1, which is characterized in that the drainpipe is PVC row
Water pipe, described one of thick nylon net cloth of PVC drain pipe outer wall wrapping.
4. locally deep pit drain measure trench system according to claim 1, which is characterized in that the drainpipe locally opens up
Pore, the pore aperture are 20mm.
5. locally deep pit drain measure trench system according to claim 1, which is characterized in that the sump uses finished product
Diameter is that 1 meter of Prefabricated Concrete pipe is assembled.
6. locally deep pit drain measure trench system according to claim 1, which is characterized in that the concrete cushion thickness
For 100mm.
7. locally deep pit drain measure trench system according to claim 1, which is characterized in that the spacing of the drainage groove
It is determined according to precipitation height and the precipitation gradient, the precipitation gradient is 1/10~1/15.
8. a kind of construction method of locally deep pit drain measure trench system characterized by comprising
The above pit earthwork of level of ground water is excavated, drainage groove line setting, mechanical excavation drainage groove, installing submersible pump is taken out bright
Arrange casual water in drainage trenching slot；
It is laid with rubble in drainage groove, places PVC drain pipe, and the PVC drain pipe is covered using thin cobble；
Drainage groove is backfilled using sandstone；
Casting concrete bed course；
The sump assembled by Prefabricated Concrete pipe is installed at drainage groove both ends, and installing submersible pump takes out drop underground water in sump.
9. construction method according to claim 8, which is characterized in that the depth of burying of the drainage groove is needed by foundation pit
The depth of precipitation is determining, different precipitation depth areas, the settable difference of drainage groove bottom absolute altitude.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910323484.6A CN110004935A (en) | 2019-04-22 | 2019-04-22 | A kind of locally deep pit drain measure trench system and construction method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910323484.6A CN110004935A (en) | 2019-04-22 | 2019-04-22 | A kind of locally deep pit drain measure trench system and construction method |
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| CN110004935A true CN110004935A (en) | 2019-07-12 |
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| CN201910323484.6A Pending CN110004935A (en) | 2019-04-22 | 2019-04-22 | A kind of locally deep pit drain measure trench system and construction method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112982459A (en) * | 2021-03-11 | 2021-06-18 | 中国二十二冶集团有限公司 | Large-area drainage construction method for strongly weathered rock substrate rich in low-pressure-bearing fracture water |
| CN113585292A (en) * | 2021-08-25 | 2021-11-02 | 江苏南通三建集团股份有限公司 | Construction process for preventing underground structure from floating when earth is backfilled |
| CN115217134A (en) * | 2022-08-31 | 2022-10-21 | 中国二十二冶集团有限公司 | Water reducing method for ground surface pore water in pebble bed and weathered rock region in narrow region |
| CN115288173A (en) * | 2022-09-13 | 2022-11-04 | 中国五冶集团有限公司 | Foundation pit drainage system and method |
| CN115419093A (en) * | 2022-09-26 | 2022-12-02 | 中建港航局集团有限公司 | Bottom plate construction method during piping of deep foundation pit with underwater channel interface |
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| KR200195289Y1 (en) * | 2000-04-07 | 2000-09-01 | 임철웅 | The structure of round-flat combined drain in dehydration method for soft ground |
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| CN207121911U (en) * | 2017-07-28 | 2018-03-20 | 江苏华都建设有限公司 | A kind of foundation ditch horizontal tube precipitation system |
| CN108316306A (en) * | 2018-03-19 | 2018-07-24 | 中国十七冶集团有限公司 | A kind of Collapsible Loess District underground pipe gallery foundation pit excavates and cushion construction method |
| CN108487276A (en) * | 2018-04-27 | 2018-09-04 | 陕西建工机械施工集团有限公司 | A kind of embed-type shallow-layer combined water drain pipe and construction method |
| CN210288405U (en) * | 2019-04-22 | 2020-04-10 | 上海建工一建集团有限公司 | Local deep pit water conservancy diversion escape canal system |
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2019
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| KR200195289Y1 (en) * | 2000-04-07 | 2000-09-01 | 임철웅 | The structure of round-flat combined drain in dehydration method for soft ground |
| CN106801427A (en) * | 2016-12-15 | 2017-06-06 | 宁波二十冶建设有限公司 | Foundation ditch horizontal precipitation device and its application method |
| CN207121911U (en) * | 2017-07-28 | 2018-03-20 | 江苏华都建设有限公司 | A kind of foundation ditch horizontal tube precipitation system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112982459A (en) * | 2021-03-11 | 2021-06-18 | 中国二十二冶集团有限公司 | Large-area drainage construction method for strongly weathered rock substrate rich in low-pressure-bearing fracture water |
| CN113585292A (en) * | 2021-08-25 | 2021-11-02 | 江苏南通三建集团股份有限公司 | Construction process for preventing underground structure from floating when earth is backfilled |
| CN115217134A (en) * | 2022-08-31 | 2022-10-21 | 中国二十二冶集团有限公司 | Water reducing method for ground surface pore water in pebble bed and weathered rock region in narrow region |
| CN115288173A (en) * | 2022-09-13 | 2022-11-04 | 中国五冶集团有限公司 | Foundation pit drainage system and method |
| CN115419093A (en) * | 2022-09-26 | 2022-12-02 | 中建港航局集团有限公司 | Bottom plate construction method during piping of deep foundation pit with underwater channel interface |
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