CN104420476B - A kind of method and device that utilizes self-control tubule well lowering of watertable - Google Patents
A kind of method and device that utilizes self-control tubule well lowering of watertable Download PDFInfo
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- CN104420476B CN104420476B CN201310377705.0A CN201310377705A CN104420476B CN 104420476 B CN104420476 B CN 104420476B CN 201310377705 A CN201310377705 A CN 201310377705A CN 104420476 B CN104420476 B CN 104420476B
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- pipe
- well
- foundation ditch
- self
- screen
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- 238000000034 method Methods 0.000 title claims abstract description 25
- 210000005239 tubule Anatomy 0.000 title claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 40
- 238000010276 construction Methods 0.000 claims abstract description 13
- 238000001556 precipitation Methods 0.000 claims abstract description 11
- 239000003673 groundwater Substances 0.000 claims abstract description 10
- 238000007789 sealing Methods 0.000 claims abstract description 10
- 229910000831 Steel Inorganic materials 0.000 claims description 52
- 239000010959 steel Substances 0.000 claims description 52
- 238000004062 sedimentation Methods 0.000 claims description 9
- 239000003651 drinking water Substances 0.000 claims description 8
- 235000020188 drinking water Nutrition 0.000 claims description 7
- 239000000706 filtrate Substances 0.000 claims description 7
- 239000002245 particle Substances 0.000 claims description 7
- 230000037452 priming Effects 0.000 claims description 6
- 241000209094 Oryza Species 0.000 claims description 4
- 235000007164 Oryza sativa Nutrition 0.000 claims description 4
- 235000009566 rice Nutrition 0.000 claims description 4
- 238000005553 drilling Methods 0.000 claims description 3
- 238000000605 extraction Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 238000005086 pumping Methods 0.000 claims description 3
- 230000008595 infiltration Effects 0.000 abstract description 4
- 238000001764 infiltration Methods 0.000 abstract description 4
- 239000000463 material Substances 0.000 abstract description 3
- 239000002689 soil Substances 0.000 abstract description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 235000020681 well water Nutrition 0.000 description 1
- 239000002349 well water Substances 0.000 description 1
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
Landscapes
- 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)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
- Sewage (AREA)
Abstract
<b>The invention discloses a kind of method and device that utilizes self-control tubule well lowering of watertable. The method is made little pipe well by oneself by arranging one group in foundation ditch bottom, the water infiltrating in the little pipe well of self-control is extracted into the gutter at foundation ditch top simultaneously, thereby forms a sealing collar at foundation ditch periphery by water pump; Making to make by oneself near the level of ground water of little pipe well can not be seeped in foundation ditch, to meet foundation pit construction requirement at short notice. The present invention is specially adapted to precipitation depth not quite but groundwater resources are abundant, foundation soil infiltration coefficient is large, the engineering that the rate of discharge of groundwater is large, this self-control tubule well precipitation system can reduce near level of ground water well point at short notice, when the common use of multiple tube well dewatering points, will form a sealing collar at foundation ditch periphery, the level of ground water of foundation ditch inside is down to the position that meets construction requirement. The present invention draws materials simply, processes simple and convenient, and constructing operation is simple, becomes well scope little, and dewatering effect is obvious.</b>
Description
Technical field
The present invention relates to a kind of method and device that utilizes self-control tubule well lowering of watertable, belong toIn local lowering of watertable technical field.
Background technology
Along with the development of modern economy, skyscraper has become becoming greatly of modern architecture developmentGesture, skyscraper adopts raft foundation, box foundation or pile-raft foundation more, according to designing requirement,The embedded depth of foundation of building generally should not be less than 1/15 of depth of building, with current heightIn layer building, the structure height 99m that adopt are example more, and building foundation buried depth is approximately7m, if basement is double-deck, its embedded depth of foundation may be darker, so, such engineering existsBasic earthwork when excavation, great majority all can run into underground water, and precipitation problem becomes constructionA great problem. At present, be mainly in the prior art adopt powerful water pump draw water andThe mode of draining is carried out lowering of watertable, and existing this processing mode is being drawn water and drainingMeanwhile, the water of its discharge again rapid permeability in foundation ditch, thereby greatly reduce the precipitation that draws waterEffect. So existing this dewatering mode not only exist inefficiency, construction cost high,The problem that construction period is long, but also exist the problems such as dewatering effect is poor. Therefore, existingThe mode of lowering of watertable is very undesirable.
Summary of the invention
The object of the invention is to, provide a kind of construction easily, dewatering effect utilize preferably fromMethod and the device of tubule well lowering of watertable processed, run in foundation construction process to solvePrecipitation problem, thus overcome the deficiencies in the prior art.
Technical scheme of the present invention:
A method of utilizing self-control tubule well lowering of watertable, the method is by the bottom of foundation ditchPortion arranges one group and makes little pipe well by oneself, the water infiltrating in the little pipe well of self-control is extracted into by water pump simultaneouslyThe gutter at foundation ditch top, thus a sealing collar formed at foundation ditch periphery; Make to make by oneself little pipe wellNear level of ground water can not be seeped in foundation ditch, to meet foundation pit construction requirement at short notice.
In preceding method, foundation ditch bottom, described one group of self-control tubule well surrounding is uniform.
In preceding method, the construction procedure of the little pipe well of described self-control is as follows:
Step 1, making screen pipe; The steel pipe manufacturing that is 300mm with diameter, steel pipe bottom is used5mm steel plate sealing weldering, in the hole of steel pipe bottom and some diameter 30mm of side face drilling, holeApart from 80mm, then roll up layer of steel wire net outward at steel pipe and fix;
Step 2, in foundation ditch, dig pipe well; The degree of depth of pipe well is 2-3 rice, and diameter is 0.8-1Rice;
Step 3, screen pipe is vertically inserted in pipe well, screen pipe top is higher than pipe well mouth500mm; At the thick coarse sands layer of screen pipe bottom paving 200mm, then at coarse sands layer upper berth 300mmThick metalling;
Step 4, with the cobble that particle diameter is not less than 100mm fill up between screen pipe and pipe well betweenGap.
In preceding method, described water pump adopts 40WBZ6.3-16C or 50ZWL15-30 type to soarJourney self priming pump, the drinking-water pipe of self priming pump inserts the metalling surface location of screen pipe bottom, self-primingThe outlet pipe of pump extends to the sedimentation basin at foundation ditch top, the underground water of the extraction row of draining into after precipitationDitch.
The device forming according to preceding method, comprises the one group of self-control that is distributed in foundation ditch bottom surroundingLittle pipe well, makes by oneself in little pipe well and is provided with screen pipe, and the upper orifice of screen pipe is higher than the little pipe well of self-controlWell head 500mm, is provided with filtrate between screen pipe and the little pipe well of self-control; Make the well head of little pipe well by oneselfBe provided with water pump, the drinking-water pipe mouth of pipe of water pump is positioned at the bottom of screen pipe, the outlet pipe of water pump withThe sedimentation basin at foundation ditch top connects; The drainpipe of sedimentation basin is connected with gutter.
In aforementioned means, described filtrate is the particle diameter being filled between screen pipe and the little pipe well of self-controlCobble more than 100mm.
In aforementioned means, described water pump bottom is provided with platform, and platform is higher than the upper orifice of screen pipe.
In aforementioned means, described screen pipe comprises steel pipe, and steel pipe is positioned at below foundation ditch elevation of bottomPart is evenly equipped with filter opening, and the steel pipe outside filter opening is provided with filter screen, and the bottom in steel pipe is provided with coarse sandLayer, is provided with metalling on coarse sands layer.
In aforementioned means, described filter screen is the layer of steel wire net of the filter opening outer wrapping on steel pipe.
In aforementioned means, described steel pipe bottom is provided with shrouding, is evenly equipped with filter opening, filter opening on shroudingBe provided with filter screen outward; Steel pipe top is provided with well lid, and well lid is provided with and passes through for pumping for water pump pipeThrough hole.
Compared with prior art, it is little that the present invention is applicable to precipitation depth, adopts foundation ditch bottom brightThe engineering of well precipitation, is also applicable to adopt the precipitation methods such as the outer precipitation in hole or water-stop curtain simultaneouslyAfter, in foundation ditch, still there is the engineering of open fire. Be specially adapted to the little but underground water money of precipitation depthSource is abundant, and foundation soil infiltration coefficient is large, the engineering that the rate of discharge of groundwater is large, the little pipe well of this self-controlPrecipitation system can reduce near level of ground water well point at short notice, and multiple tube well dewatering points are commonWhen use, will form a sealing collar at foundation ditch periphery, by the underground water potential drop of foundation ditch insideTo the position that meets construction requirement. The present invention draws materials simply, processes simple and convenient, constructing operationSimply, become well scope little, dewatering effect is obvious.
Brief description of the drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structural representation of screen pipe.
Being labeled as in accompanying drawing: 1-make by oneself little pipe well, 2-screen pipe, 3-filtrate, 4-water pump,5-drinking-water pipe, 6-outlet pipe, 7-sedimentation basin, 8-gutter, 9-steel pipe, 10-filter opening, 11-Filter screen, 12-coarse sands layer, 13-metalling, 14-well lid, 15-through hole, 16-foundation ditch face frontier defenseProtect, 17-platform.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in further detail, but not as to the present inventionAny restriction.
Utilize a method for self-control tubule well lowering of watertable, as shown in Figure 1. The methodMake little pipe well by oneself by arranging one group in foundation ditch bottom, foundation ditch bottom, one group of self-control tubule well fourZhou Junbu. Water in the little pipe well of infiltration self-control is extracted into the draining at foundation ditch top by water pump simultaneouslyDitch, thus a sealing collar formed at foundation ditch periphery; Make to make by oneself near the level of ground water of little pipe wellCan not be seeped at short notice in foundation ditch, to meet foundation pit construction requirement. Described water pump adopts40WBZ6.3-16C or 50ZWL15-30 type high-delieving-head self-suction pump, the drinking-water pipe of self priming pump insertsThe metalling surface location of screen pipe bottom, the outlet pipe of self priming pump extends to the heavy of foundation ditch topPond, shallow lake, the underground water of extraction drains into gutter after precipitation.
The construction procedure of the little pipe well of described self-control is as follows:
Step 1, making screen pipe; The steel pipe manufacturing that is 300mm with diameter, steel pipe bottom is used5mm steel plate sealing weldering, in the hole of steel pipe bottom and some diameter 30mm of side face drilling, holeApart from 80mm, then roll up layer of steel wire net outward at steel pipe and fix;
Step 2, in foundation ditch, dig pipe well; The degree of depth of pipe well is 2-3 rice, and diameter is 0.8-1Rice;
Step 3, screen pipe is vertically inserted in pipe well, screen pipe top is higher than pipe well mouth500mm; At the thick coarse sands layer of screen pipe bottom paving 200mm, then at coarse sands layer upper berth 300mmThick metalling;
Step 4, with the cobble that particle diameter is not less than 100mm fill up between screen pipe and pipe well betweenGap.
The device forming according to preceding method, as shown in Figure 1. Comprise and be distributed in foundation ditch bottom fourOne group of self-control tubule well 1 in week, is provided with screen pipe 2 in self-control tubule well 1, screen pipe 2Upper orifice is higher than self-control tubule well 1 well head 500mm, between screen pipe 2 and self-control tubule well 1Be provided with filtrate 3; The well head of self-control tubule well 1 is provided with water pump 4, and the drinking-water pipe 5 of water pump 4 is managedMouth is positioned at the bottom of screen pipe 2, the outlet pipe 6 of water pump 4 and the sedimentation basin 7 at foundation ditch topConnect; The drainpipe of sedimentation basin 7 is connected with gutter 8. Described filtrate 3 is to be filled in filtrationCobble more than the particle diameter 100mm between pipe 2 and self-control tubule well 1. Described water pump 4 bottomsBe provided with platform 17, platform 17 is higher than the upper orifice of screen pipe 2. Described screen pipe 2 is as Fig. 2Shown in, comprising steel pipe 9, steel pipe 9 is positioned at the following part of foundation ditch elevation of bottom and is evenly equipped with filter opening 10,Steel pipe 9 outside filter opening 10 is provided with filter screen 11, and the bottom in steel pipe 9 is provided with coarse sands layer 12,On coarse sands layer 12, be provided with metalling 13. Described filter screen 11 is the filter openings 10 on steel pipe 9The layer of steel wire net of outer wrapping. Described steel pipe 9 bottoms are provided with shrouding, are evenly equipped with filter opening on shrouding10, filter opening is provided with filter screen 11 outward; Steel pipe 9 tops are provided with well lid 14, and well lid 14 is provided with useThe through hole 15 passing through in pumping for water pump pipe 5.
Embodiment
When concrete enforcement, as shown in Figure 1. Dig uniformly some degree of depth along foundation ditch bottom surrounding about2 meters of left and right, the dewatering well of 0.8 meter of left and right of diameter. Then be greater than the dewatering well degree of depth by length500mm left and right, the steel pipe steel pipe 9 of diameter 300mm is made screen pipe 2. Steel pipe 9 bottoms makeWith the thick steel plate sealing of 5mm, then use sidewall and the bottom cutting filter of electrogas welding at pipe well 9Hole 10, filter opening 10 diameter 30mm, the vertical horizontal spacing of filter opening 10 is all in 80mm left and right, wholeSteel pipe need to be embedded in below ground part all needs to cut filter opening 10, and filter opening 10 cuts completeAfter, seal parcel in steel pipe 9 outsides with steel wire, as filter screen 11. Screen pipe 2After making, there are 11 1 sections of filter screens vertically to stand on the shaft bottom of dewatering well screen pipe 2, filterManage 2 upper ends and expose 500mm left and right, foundation ditch bottom. Then first spread 200mm in screen pipe 2 bottomsThe coarse sands layer 12 that left and right is thick, then on coarse sands layer 12, repave the thick metalling in 300mm left and right 13,Form sand filter blanket. The cobble that finally uses particle diameter to be greater than 100mm in steel pipe 9 outsides is filled willSteel pipe 9 jam-packeds, are convenient to form water channel at steel pipe 9 peripheries like this, prevent filter screen 11 and filter opening10 are blocked by sandstone, affect dewatering effect, finally a well lid 14 are set steel pipe 9 is suitable for reading,On well lid 14, open a through hole 15, through hole 15 is opened at well lid 14 edges, and drinking-water pipe 5 is from partiallyThe through hole 15 of the heart inserts in dewatering well, then uses 40WBZ6.3-16C type or 50ZWL15-30The high-delieving-head self-suction pump of two kinds of models draws water, by outlet pipe 6 by infiltration pipe 2In the underground water gutter 8 that is evacuated to foundation ditch top discharge. When normal use, well lid 14 envelopesLive the mouth of pipe, to prevent that foreign material from falling in dewatering well, while checking in well water level, only need rotating well cover14 can check water level situation in well.
Claims (9)
1. one kind is utilized the method for self-control tubule well lowering of watertable, it is characterized in that: the method is made little pipe well by oneself by arranging one group in foundation ditch bottom, the water infiltrating in the little pipe well of self-control is extracted into the gutter at foundation ditch top by water pump simultaneously, thereby forms a sealing collar at foundation ditch periphery; Making to make by oneself near the level of ground water of little pipe well can not be seeped in foundation ditch, to meet foundation pit construction requirement at short notice; The construction procedure of the little pipe well of described self-control is as follows:
Step 1, making screen pipe; The steel pipe manufacturing that is 300mm with diameter, 5mm steel plate sealing weldering for steel pipe bottom, in the hole of steel pipe bottom and some diameter 30mm of side face drilling, pitch-row 80mm, then rolls up layer of steel wire net outward at steel pipe and fixes;
Step 2, in foundation ditch, dig pipe well; The degree of depth of pipe well is 2-3 rice, and diameter is 0.8-1 rice;
Step 3, screen pipe is vertically inserted in pipe well, screen pipe top is higher than pipe well mouth 500mm; At the thick coarse sands layer of screen pipe bottom paving 200mm, then at the thick metalling of coarse sands layer upper berth 300mm;
Step 4, fill up the gap between screen pipe and pipe well with the cobble that particle diameter is not less than 100mm.
2. method according to claim 1, is characterized in that: foundation ditch bottom, described one group of self-control tubule well surrounding is uniform.
3. method according to claim 1, it is characterized in that: described water pump adopts 40WBZ6.3-16C or 50ZWL15-30 type high-delieving-head self-suction pump, the drinking-water pipe of self priming pump inserts the metalling surface location of screen pipe bottom, the outlet pipe of self priming pump extends to the sedimentation basin at foundation ditch top, and the underground water of extraction drains into gutter after precipitation.
4. the device forming according to method described in the arbitrary claim of claim 1～3, it is characterized in that: comprise that being distributed in a group of foundation ditch bottom surrounding makes little pipe well (1) by oneself, make by oneself and in little pipe well (1), be provided with screen pipe (2), the upper orifice of screen pipe (2), higher than self-control little pipe well (1) well head 500mm, is provided with filtrate (3) between screen pipe (2) and the little pipe well of self-control (1); The well head of making little pipe well (1) by oneself is provided with water pump (4), and drinking-water pipe (5) mouth of pipe of water pump (4) is positioned at the bottom of screen pipe (2), and the outlet pipe (6) of water pump (4) is connected with the sedimentation basin (7) at foundation ditch top; The drainpipe of sedimentation basin (7) is connected with gutter (8).
5. install according to claim 4, it is characterized in that: described filtrate (3) is cobble more than the particle diameter 100mm being filled between screen pipe (2) and the little pipe well of self-control (1).
6. install according to claim 4, it is characterized in that: described water pump (4) bottom is provided with platform (17), and platform (17) is higher than the upper orifice of screen pipe (2).
7. install according to claim 4, it is characterized in that: described screen pipe (2) comprises steel pipe (9), steel pipe (9) is positioned at the following part of foundation ditch elevation of bottom and is evenly equipped with filter opening (10), the outer steel pipe (9) of filter opening (10) is provided with filter screen (11), bottom in steel pipe (9) is provided with coarse sands layer (12), is provided with metalling (13) on coarse sands layer (12).
8. install according to claim 7, it is characterized in that: described filter screen (11) is the layer of steel wire net of filter opening (10) outer wrapping on steel pipe (9).
9. install according to claim 7, it is characterized in that: described steel pipe (9) bottom is provided with shrouding, is evenly equipped with filter opening (10) on shrouding, and filter opening is provided with filter screen (11) outward; Steel pipe (9) top is provided with well lid (14), and well lid (14) is provided with the through hole (15) passing through for pumping for water pump pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310377705.0A CN104420476B (en) | 2013-08-27 | 2013-08-27 | A kind of method and device that utilizes self-control tubule well lowering of watertable |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310377705.0A CN104420476B (en) | 2013-08-27 | 2013-08-27 | A kind of method and device that utilizes self-control tubule well lowering of watertable |
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| Publication Number | Publication Date |
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| CN104420476A CN104420476A (en) | 2015-03-18 |
| CN104420476B true CN104420476B (en) | 2016-05-18 |
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| CN201310377705.0A Expired - Fee Related CN104420476B (en) | 2013-08-27 | 2013-08-27 | A kind of method and device that utilizes self-control tubule well lowering of watertable |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108277807A (en) * | 2018-04-09 | 2018-07-13 | 浙江乔兴建设集团有限公司 | Deep basal pit artesian water is prominent to gush decompression control water-bound |
| CN108547315B (en) * | 2018-04-21 | 2021-02-19 | 天津中擎建筑工程有限公司 | Construction scheme for basement in wet zone |
| CN109930614B (en) * | 2019-04-12 | 2024-05-17 | 中亿丰建设集团股份有限公司 | Nondestructive construction method for deep foundation pit tube well operation closed bottom plate structure |
| CN110055987A (en) * | 2019-05-31 | 2019-07-26 | 长沙市市政工程有限责任公司 | A kind of rich water mobile sand layer foundation pit tool-type dewatering well device |
| CN110409474B (en) * | 2019-08-07 | 2024-03-26 | 中煤第三建设（集团）有限责任公司 | Pipe well dewatering well arranged at bottom of underground diaphragm wall |
| CN110485448B (en) * | 2019-08-20 | 2024-06-18 | 中交第二公路工程局有限公司 | Automatic monitoring system for shield originating section end well precipitation and using method thereof |
| CN110593288A (en) * | 2019-09-06 | 2019-12-20 | 河北中基华工程项目管理有限公司 | Well point dewatering and drainage device for deep foundation pit |
| CN113047324A (en) * | 2021-03-25 | 2021-06-29 | 中国十七冶集团有限公司 | Drainage structures falls in combination of high permeability stratum deep basal pit |
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| JP2007239286A (en) * | 2006-03-08 | 2007-09-20 | Kajima Corp | Construction method for lowering underground water level |
| CN101787702A (en) * | 2010-02-08 | 2010-07-28 | 上海广联建设发展有限公司 | Effective vacuum dewatering method |
| CN201952806U (en) * | 2011-01-24 | 2011-08-31 | 惠州市水电建筑工程有限公司 | Light-duty well-points dewatering construction device |
| CN102535490A (en) * | 2012-03-06 | 2012-07-04 | 北京交通大学 | Method for dewatering foundation pit by using bored cast-in-place pile |
| CN202450537U (en) * | 2012-03-06 | 2012-09-26 | 新蒲建设集团有限公司 | Composite dewatering device of vacuum tube well |
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- 2013-08-27 CN CN201310377705.0A patent/CN104420476B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007239286A (en) * | 2006-03-08 | 2007-09-20 | Kajima Corp | Construction method for lowering underground water level |
| CN101787702A (en) * | 2010-02-08 | 2010-07-28 | 上海广联建设发展有限公司 | Effective vacuum dewatering method |
| CN201952806U (en) * | 2011-01-24 | 2011-08-31 | 惠州市水电建筑工程有限公司 | Light-duty well-points dewatering construction device |
| CN102535490A (en) * | 2012-03-06 | 2012-07-04 | 北京交通大学 | Method for dewatering foundation pit by using bored cast-in-place pile |
| CN202450537U (en) * | 2012-03-06 | 2012-09-26 | 新蒲建设集团有限公司 | Composite dewatering device of vacuum tube well |
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| CN104420476A (en) | 2015-03-18 |
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