CN103967028A - Immersed tube drainage structure and method for handling suddenly-produced foundation pit water bursting and fountains through immersed tube drainage structure - Google Patents
Immersed tube drainage structure and method for handling suddenly-produced foundation pit water bursting and fountains through immersed tube drainage structure Download PDFInfo
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- CN103967028A CN103967028A CN201410227509.XA CN201410227509A CN103967028A CN 103967028 A CN103967028 A CN 103967028A CN 201410227509 A CN201410227509 A CN 201410227509A CN 103967028 A CN103967028 A CN 103967028A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 80
- 238000000034 method Methods 0.000 title claims abstract description 31
- 230000009172 bursting Effects 0.000 title abstract 3
- 239000004567 concrete Substances 0.000 claims abstract description 20
- 238000005086 pumping Methods 0.000 claims abstract description 20
- 239000002689 soil Substances 0.000 claims abstract description 15
- 238000009412 basement excavation Methods 0.000 claims abstract description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 53
- 239000010959 steel Substances 0.000 claims description 53
- 238000001556 precipitation Methods 0.000 claims description 24
- 230000008961 swelling Effects 0.000 claims description 13
- 239000004677 Nylon Substances 0.000 claims description 11
- 229920001778 nylon Polymers 0.000 claims description 11
- 238000003466 welding Methods 0.000 claims description 9
- 238000000465 moulding Methods 0.000 claims description 3
- 240000007594 Oryza sativa Species 0.000 claims description 2
- 235000007164 Oryza sativa Nutrition 0.000 claims description 2
- 235000009566 rice Nutrition 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 12
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 238000001914 filtration Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000003673 groundwater Substances 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000002803 maceration Methods 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000011178 precast concrete Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000003809 water extraction Methods 0.000 description 1
- 239000002349 well water Substances 0.000 description 1
- 235000020681 well water Nutrition 0.000 description 1
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- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The invention discloses an immersed tube drainage structure, and further discloses a method for handling suddenly-produced foundation pit water bursting and fountains through the immersed tube drainage structure. When the water bursting phenomenon obviously occurs in a foundation pit and mud is sprayed out, landfill is conducted through original soil within the range of a core tube which has been dug, and then well digging and water pumping are conducted. A plurality of wells are formed for the core tube, and shaft bottom elevations are reduced till the shaft bottom elevations are below the natural ground and extend into high-water-content layers; after formation, a submerged pump is placed in each well to conduct water pumping; the upper openings of the wells are connected to form a water pumping network so that underground water can be pumped to a drainage system on the upper edge of the foundation pit; digging is continued after water inside the well is lowered below the foundation bottom elevations of the core tube; in the digging process, water pumping systems of the water pumps keeps working, blinding concrete pouring is conducted instantly after earth excavation conducted on the portions is completed; after pouring, the water pumping systems of the water pumps in the wells stop working after the raft foundation concrete pouring is completed and the strength reaches 75% of the designed strength. The drainage construction method is simple in process, and construction cost of foundation pit drainage construction can be effectively reduced.
Description
Technical field
The present invention relates to a kind of immersed tube Precipitation Structure.
The present invention relates to a kind of immersed tube precipitation and process the method for sudden foundation ditch swelling, fountain.
Background technology
Foundation pit dewatering mainly comprises sump precipitation method and two kinds of methods of well-points dewatering method, and wherein well-points dewatering method has that displacement is large, precipitation deeply, is not subject to the features such as soil property restriction, is applicable to rich groundwater, and foundation ditch is dark, the engineering lowering level of ground water that foundation ditch floor space is large; Well-points dewatering method is before excavation of foundation pit, at the dewatering well of foundation ditch surrounding construction some, at the bottom of dewatering well welding filter pipe, utilizes pumping equipment that the underground water in well is extracted out, makes dug soil remain the method for dry state;
It is exactly that porosity is low that these filter pipes have a common defect, and porosity is higher, and water inlet effect is just better.In addition, cast iron filament wrapped filter pipe and the intensity of cement filter pipe own are low, easy fracture, in caving ground well water pumping process, very easily rupture, and the negative consequence that causes well to scrap.
A kind of foundation ditch precast concrete pipe immersed tube Precipitation Structure of a disclosed patent name and precipitation method, the patent No. 201210102995.3, be equipped with some layers of macadam at the bottom of concrete pipe, filter with the silt to macadam bottom etc., and the engineering quantity of laying macadam is huge, successively lay according to stone size, but brought another technical barrier simultaneously, does manually how entering water layer lay? waste time and energy, finally consider when constructing structure is removed, should remove mixed earth pipe, remove again the stone laying, engineering quantity is huge.Therefore, need to provide a kind of new technical scheme to solve the problems referred to above.
Summary of the invention
For addressing the above problem, the invention provides a kind of immersed tube Precipitation Structure.
The present invention also provides a kind of immersed tube precipitation to process the method for sudden foundation ditch swelling, fountain.
The technical solution used in the present invention:
A kind of immersed tube Precipitation Structure, it comprises steel pipe, submersible pump, water pipe and gutter, in steel pipe walls, bore full suction hole, it is non-perforated pipe that this steel pipe is positioned at soil layer upper surface, described submersible pump is positioned at steel pipe bottom, described submersible pump top is connected with extraneous gutter by water pipe, and described steel pipe is embedded in raft foundation inside concrete position welding seal ring, described steel pipe welding water shutoff suitable for reading plate.
Described outer wall of steel pipe parcel nylon Dense mesh screen.
Suction hole in described steel pipe walls is the circular hole of aperture 4-6mm, pitch of holes 145-155mm.
A kind of immersed tube precipitation is processed sudden foundation ditch swelling, the method of fountain, comprise the following steps: when obviously occurring swelling ejection phenomenon in foundation ditch, and there is mud when ejection, the Core Walls Structure scope original soil having excavated is carried out to landfill, then dig a well and draw water, Core Walls Structure is arranged multiple wells, shaft bottom absolute altitude is beaten to natural below ground, stretch into high degree of water layer, after moulding, in every well, putting a submersible pump draws water, suitable for readingly be linked to be the network that draws water underground water is evacuated to foundation ditch top drainage system, treat that in well, water is down to the following 1-1.5 rice of Core Walls Structure basis end absolute altitude, continue excavation, in digging process, pumping for water pump system keeps continuous operation, this position soil excavation is complete, immediately carrying out blinding concrete builds, after blinding concrete has been built, Deng raft foundation concreting complete and reach design strength 75% after, in well, pumping system just can quit work.
Well adopts drainage steel tube well, bores full suction hole in steel pipe walls, outer wall parcel nylon Dense mesh screen, and immersed tube Cheng Jing, sinks to aquifer by the steel pipe with suction hole, and soil layer upper surface to be excavated is non-perforated pipe.
Be embedded on the steel pipe of raft foundation inside concrete position and weld three seal rings, and the steel pipe water shutoff plate of burn-oning suitable for reading, shutoff well head is all cast in raft foundation concrete.
Described pumping for water pump system comprises submersible pump and the water pipe being connected with submersible pump.
The invention has the beneficial effects as follows: the present invention adopts immersed tube to carry out precipitation, a drainage steel tube well is set, in well, putting a submersible pump draws water, suitable for readingly be linked to be the network that draws water underground water is evacuated to foundation ditch top drainage system, Deng raft foundation concreting complete and reach design strength 75% after, in well, pumping system just can quit work, and dewatering construction method flow process is simple, can effectively reduce the construction cost of foundation pit dewatering construction.
Brief description of the drawings
Fig. 1 is the schematic diagram of immersed tube Precipitation Structure.
1, steel pipe, 2, nylon Dense mesh screen, 3, submersible pump, 4, water pipe, 5, cable, 6, suction hole, 7, seal ring, 8, water shutoff plate, 9, non-perforated pipe, 10, gutter.
Detailed description of the invention
Following embodiment is only for the present invention is described, but can not limit protection scope of the present invention.
As shown in Figure 1, a kind of immersed tube Precipitation Structure of the present invention, it comprises steel pipe 1, submersible pump 3, water pipe 4 and gutter 10, on steel pipe 1 wall, bore full suction hole 6, this suction hole 6 adopts drilling tool to drill through, terrestrial operation, quite convenient, this suction hole 6 has two effects in addition, can make water in suction hole 6, enter fast on the one hand, instead of only only depend on a steel pipe opening to enter; Suction hole 6 outer wrapping nylon Dense mesh screens 2, can enter water on the other hand, and the silt that is greater than nylon Dense mesh screen aperture can not enter, and silt is just deposited on the end, hole.
It is non-perforated pipe 9 that this steel pipe 1 is positioned at soil layer upper surface, and submersible pump 3 is positioned at steel pipe 1 bottom, and submersible pump 3 tops are connected with extraneous gutter 10 by water pipe 4, the cable 5 outside submersible pump 3 connecting wells, by water pump by outside interior open caisson steel pipe 1 water extraction system.
Steel pipe 1 is embedded in raft foundation inside concrete position welding seal ring 7, and seal ring 7 is the ring flat-plates for preventing seepage, adds exactly the path of the prolongation water maceration of several times, has greatly increased maceration resistance and has reached impervious object, steel pipe 1 welding water shutoff suitable for reading plate 8.For shutoff well head is all cast in raft foundation concrete.
Steel pipe 1 outer wall parcel nylon Dense mesh screen 2.Here said nylon Dense mesh screen is equivalent to water strainer, the silt in can filtering water quality.
Suction hole 6 on steel pipe 1 wall is the circular hole of aperture 4-6mm, pitch of holes 145-155mm.Can filtering be greater than earth, plastics, metal impurities of this size etc.
Adopt above-mentioned immersed tube Precipitation Structure to process the method for sudden foundation ditch swelling, fountain, when obviously occurring swelling ejection phenomenon in foundation ditch, and there is mud when ejection, the Core Walls Structure scope original soil having excavated is carried out to landfill (reason is equilibrium water pressure), dig a well and draw water subsequently, 300 ㎡ Core Walls Structures are arranged 6 wells, and shaft bottom absolute altitude is beaten to natural below ground 38m, stretches into high degree of water layer.
Well adopts drainage steel tube well, well adopts the common steel tube 1 of 400 millimeters of diameters, on steel pipe 1 wall, bore the circular hole (suction hole 6) of full aperture 4-6mm, play into water effect, water enters in steel pipe 1 from circular hole, pitch of holes is 145-155mm, outer wall parcel nylon Dense mesh screen 2, to make water strainer, filtering mud impurity, to sink to aquifer with the steel pipe of suction hole 6,-10.200m is non-perforated pipe 9 to soil layer upper surface to be excavated, and thick to welding three 5mm between-9.500m at steel pipe-10.100m, wide 100mm Plate Welding seal ring 7, after moulding, in every well, putting a submersible pump 3 draws water, suitable for readingly be linked to be the network that draws water underground water is evacuated to foundation ditch top drainage system (gutter 10), form pumping for water pump system from digging a well to, pumping for water pump system comprises submersible pump 3 and the water pipe 4 being connected with submersible pump 3, cable 5 outside submersible pump 3 connecting wells, constantly draw water, water draws up by water pipe 4, discharge from gutter 10 again, after 30 hours, in well, water continually, but it is many to be down to the following 1m of Core Walls Structure basis end absolute altitude, adopt drainage steel tube well, after water level is down to a certain degree, can continue excavation, meanwhile, in digging process, pumping for water pump system keeps continuous operation (because underground water ceaselessly oozes out), reduce the impact on the duration.
This position soil excavation is complete, immediately carrying out blinding concrete builds, after blinding concrete has been built, Deng raft foundation concreting complete and reach design strength 75% after, in 6 wells, pumping system just can quit work, and after treating foundation construction, raft foundation concrete strength has reached 75% of design strength, pumping system quits work (periphery secondary Application of light well point precipitation continue into), has controlled quicksand swelling.
Be embedded on the steel pipe 1 of raft foundation inside concrete position and weld three thick, the wide 100mm Plate Welding of 5mm seal rings 7, and steel pipe 1 is suitable for reading, and (clip-9.350mm is with upper part steel pipe, and at this place's welded steel pipe) the 5mm steel plate welding water shutoff plate 8 of burn-oning, shutoff well head is all cast in raft foundation concrete.
This falls water treatment structure and adopts the method for holing into well, and terrestrial operation is got up convenient, bores full suction hole in steel pipe lower end, suction hole makes into water fast, and current are by outside the suction pump extraction system in shaft bottom, and outer wall of steel pipe wraps up nylon Dense mesh screen, filtering silt, after construction, dismounting is also very convenient.
The present invention adopts immersed tube to carry out precipitation, a drainage steel tube well is set, in well, putting a submersible pump draws water, suitable for readingly be linked to be the network that draws water underground water is evacuated to foundation ditch top drainage system, Deng raft foundation concreting complete and reach design strength 75% after, in well, pumping system just can quit work, and dewatering construction method flow process is simple, can effectively reduce the construction cost of foundation pit dewatering construction.
Claims (7)
1. an immersed tube Precipitation Structure, it is characterized in that: it comprises steel pipe, submersible pump, water pipe and gutter, in steel pipe walls, bore full suction hole, it is non-perforated pipe that this steel pipe is positioned at soil layer upper surface, described submersible pump is positioned at steel pipe bottom, described submersible pump top is connected with extraneous gutter by water pipe, and described steel pipe is embedded in raft foundation inside concrete position welding seal ring, described steel pipe welding water shutoff suitable for reading plate.
2. a kind of immersed tube Precipitation Structure according to claim 1, is characterized in that: described outer wall of steel pipe parcel nylon Dense mesh screen.
3. a kind of immersed tube Precipitation Structure according to claim 1, is characterized in that: the suction hole in described steel pipe walls is the circular hole of aperture 4-6mm, pitch of holes 145-155mm.
4. an immersed tube precipitation is processed sudden foundation ditch swelling, the method of fountain, it is characterized in that, comprise the following steps: when obviously occurring swelling ejection phenomenon in foundation ditch, and there is mud when ejection, the Core Walls Structure scope original soil having excavated is carried out to landfill, then dig a well and draw water, Core Walls Structure is arranged multiple wells, shaft bottom absolute altitude is beaten to natural below ground, stretch into high degree of water layer, after moulding, in every well, putting a submersible pump draws water, suitable for readingly be linked to be the network that draws water underground water is evacuated to foundation ditch top drainage system, treat that in well, water is down to the following 1-1.5 rice of Core Walls Structure basis end absolute altitude, continue excavation, in digging process, pumping for water pump system keeps continuous operation, this position soil excavation is complete, immediately carrying out blinding concrete builds, after blinding concrete has been built, Deng raft foundation concreting complete and reach design strength 75% after, in well, pumping system just can quit work.
5. a kind of immersed tube precipitation according to claim 4 is processed the method for sudden foundation ditch swelling, fountain, it is characterized in that: well adopts drainage steel tube well, in steel pipe walls, bore full suction hole, outer wall parcel nylon Dense mesh screen, immersed tube Cheng Jing, steel pipe with suction hole is sunk to aquifer, and soil layer upper surface to be excavated is non-perforated pipe.
6. a kind of immersed tube precipitation according to claim 5 is processed the method for sudden foundation ditch swelling, fountain, it is characterized in that: be embedded on the steel pipe of raft foundation inside concrete position and weld seal ring, and the steel pipe water shutoff plate of burn-oning suitable for reading, shutoff well head is all cast in raft foundation concrete.
7. a kind of immersed tube precipitation according to claim 4 is processed the method for sudden foundation ditch swelling, fountain, it is characterized in that: described pumping for water pump system comprises submersible pump and the water pipe being connected with submersible pump.
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| CN201410227509.XA CN103967028A (en) | 2014-05-27 | 2014-05-27 | Immersed tube drainage structure and method for handling suddenly-produced foundation pit water bursting and fountains through immersed tube drainage structure |
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| CN201410227509.XA CN103967028A (en) | 2014-05-27 | 2014-05-27 | Immersed tube drainage structure and method for handling suddenly-produced foundation pit water bursting and fountains through immersed tube drainage structure |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104452828A (en) * | 2014-10-31 | 2015-03-25 | 武汉一冶建筑安装工程有限责任公司 | Basement ramp piping point drainage and blocking handling method |
| CN104452827A (en) * | 2014-10-16 | 2015-03-25 | 中国电建集团华东勘测设计研究院有限公司 | Concrete dam base spring opening processing method |
| CN105937243A (en) * | 2016-06-07 | 2016-09-14 | 中国十七冶集团有限公司 | Novel concrete pipe precipitation well device for basement |
| CN106939610A (en) * | 2017-05-09 | 2017-07-11 | 青岛东捷建设工程有限公司 | A kind of integrated precipitation pumping system |
| CN107326918A (en) * | 2017-08-18 | 2017-11-07 | 云南省建设投资控股集团有限公司 | A kind of concealed type, which passes through raft plate, can block impervious sump and its construction technology |
| CN108018859A (en) * | 2017-12-12 | 2018-05-11 | 中国建筑第八工程局有限公司 | Foundation Pit Pouring emergency processing method and structure |
| 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 |
| CN108894213A (en) * | 2018-06-19 | 2018-11-27 | 中铁上海工程局集团有限公司 | A kind of artificial digging pile passes through the construction method of rich water drifting sand layer |
| CN110130375A (en) * | 2019-04-30 | 2019-08-16 | 江苏楼翔建设有限公司 | A foundation pit dewatering device |
| CN110925018A (en) * | 2019-12-02 | 2020-03-27 | 河南科技大学 | Pump room construction method and pump room construction dewatering system in tunnel connection channel |
| CN110939143A (en) * | 2019-11-29 | 2020-03-31 | 中国建筑第四工程局有限公司 | Simple and easy core section of thick bamboo stepping water conservancy diversion drainage structures |
| CN111350191A (en) * | 2020-03-04 | 2020-06-30 | 中交第三航务工程勘察设计院有限公司 | Bucket type foundation structure pumping system and construction process thereof |
| CN111764396A (en) * | 2020-07-07 | 2020-10-13 | 中建一局集团建设发展有限公司 | Construction method for water-rich stratum pit-in-pit |
| CN114658018A (en) * | 2022-05-23 | 2022-06-24 | 德州黄河建业工程有限责任公司维修养护分公司 | Water lowering and draining method combining water conservancy project foundation pit and pipe well with light well point |
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104452827A (en) * | 2014-10-16 | 2015-03-25 | 中国电建集团华东勘测设计研究院有限公司 | Concrete dam base spring opening processing method |
| CN104452827B (en) * | 2014-10-16 | 2016-06-29 | 中国电建集团华东勘测设计研究院有限公司 | A kind of processing method at Concrete Dam spring |
| CN104452828A (en) * | 2014-10-31 | 2015-03-25 | 武汉一冶建筑安装工程有限责任公司 | Basement ramp piping point drainage and blocking handling method |
| CN105937243A (en) * | 2016-06-07 | 2016-09-14 | 中国十七冶集团有限公司 | Novel concrete pipe precipitation well device for basement |
| CN106939610A (en) * | 2017-05-09 | 2017-07-11 | 青岛东捷建设工程有限公司 | A kind of integrated precipitation pumping system |
| CN107326918A (en) * | 2017-08-18 | 2017-11-07 | 云南省建设投资控股集团有限公司 | A kind of concealed type, which passes through raft plate, can block impervious sump and its construction technology |
| CN108018859A (en) * | 2017-12-12 | 2018-05-11 | 中国建筑第八工程局有限公司 | Foundation Pit Pouring emergency processing method and structure |
| 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 |
| CN108894213A (en) * | 2018-06-19 | 2018-11-27 | 中铁上海工程局集团有限公司 | A kind of artificial digging pile passes through the construction method of rich water drifting sand layer |
| CN110130375A (en) * | 2019-04-30 | 2019-08-16 | 江苏楼翔建设有限公司 | A foundation pit dewatering device |
| CN110939143A (en) * | 2019-11-29 | 2020-03-31 | 中国建筑第四工程局有限公司 | Simple and easy core section of thick bamboo stepping water conservancy diversion drainage structures |
| CN110925018A (en) * | 2019-12-02 | 2020-03-27 | 河南科技大学 | Pump room construction method and pump room construction dewatering system in tunnel connection channel |
| CN110925018B (en) * | 2019-12-02 | 2021-06-25 | 河南科技大学 | Construction method and precipitation system of pump house in tunnel communication channel |
| CN111350191A (en) * | 2020-03-04 | 2020-06-30 | 中交第三航务工程勘察设计院有限公司 | Bucket type foundation structure pumping system and construction process thereof |
| CN111350191B (en) * | 2020-03-04 | 2021-08-31 | 中交第三航务工程勘察设计院有限公司 | Bucket type foundation structure pumping system and construction process thereof |
| CN111764396A (en) * | 2020-07-07 | 2020-10-13 | 中建一局集团建设发展有限公司 | Construction method for water-rich stratum pit-in-pit |
| CN114658018A (en) * | 2022-05-23 | 2022-06-24 | 德州黄河建业工程有限责任公司维修养护分公司 | Water lowering and draining method combining water conservancy project foundation pit and pipe well with light well point |
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