CN204435350U - A kind of Ground Water Pumping during Excavation Bao Quan recharges integrated apparatus - Google Patents
A kind of Ground Water Pumping during Excavation Bao Quan recharges integrated apparatus Download PDFInfo
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- CN204435350U CN204435350U CN201520021663.1U CN201520021663U CN204435350U CN 204435350 U CN204435350 U CN 204435350U CN 201520021663 U CN201520021663 U CN 201520021663U CN 204435350 U CN204435350 U CN 204435350U
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Abstract
The utility model discloses a kind of Ground Water Pumping during Excavation Bao Quan and recharge integrated apparatus, comprising: recharge that Water quality processing system one end is connected with dewatering well, the other end is connected in series water quality monitoring system successively, pressurization collecting system, wellhead assembly and recharge well; The underground water extracted out, by recharging Water quality processing system and water quality monitoring system carries out analysis of water, recharges water quality requirement if meet, then enters pressurization collecting system, and the water of pressurization collecting system enters recharge well with constant flow, constant-pressure by recharging wellhead assembly; Otherwise, turn back to and recharge Water quality processing system and again water quality analyzed and process.The utility model beneficial effect: by groundwater recharge technology, effectively can control the stable of groundwater table near construction area, prevent neighbouring stratum deformation, reduces the security threat of construction to neighbouring resident.
Description
Technical field
The utility model relates to foundation pit dewatering recharging technique field, and particularly a kind of Ground Water Pumping during Excavation Bao Quan recharges integrated apparatus.
Background technology
The way of the general employing water-stop curtain that foundation pit construction water yield in region is large in the past, but common water seal for deep foundation pit curtain cost is high, and artesian water, low pressure water stagnant water effect are poor, occur a lot of water leak accident.First foundation pit dewatering region, domestic hydrology complicated geology area occurs recharging technique in Shanghai etc., but for having the region of unique hydrogeological conditions, such as water level is higher, head difference is less etc. causes ordinary straight to take back irrigation technology can not meeting foundation pit dewatering well yield far away, and common pressurization is recharged and can be produced phenomenons such as recharging borehole wall overflow.Because of the particularity of Jinan Spring Region system, high to recharging water quality requirement, common recharging technique can not reach supply spring domain system water quality requirement.
For the geohydrologic unit of relative closure, such as Jinan Spring Region system, excretion total amount is substantially constant, excretion pathway is mainly through spring excretion, living water use and excavation of foundation pit precipitation etc., the method of foundation pit dewatering must be adopted to reduce excavation formation water grease head highness, prevent the base plate of foundation pit pressure-bearing Shuitu that may cause from gushing security threat to foundation ditch.But along with groundwater table in foundation ditch declines, gush to spring and cause great threat, former aquifer soil body effective stress increases on the other hand, causes the uneven consolidation of the soil body, cause differential settlement within the scope of cone of depression, threaten resident's safety near construction safety and boundary of works area.For solving foundation pit dewatering to surrounding environment and Bao Quan impact, the way of water-stop curtain is set usually, or design reduces the excavation of foundation pit degree of depth as far as possible, but the development in so serious obstruction and city and the quality of life of spring city resident, under special hydrogeological conditions, water-stop curtain difficulty of construction is large and cost is high.Jinan Spring Region system is the geohydrologic unit of a relative closure, excretion total amount is substantially constant, excretion pathway is mainly through spring excretion, living water use and excavation of foundation pit precipitation etc., and large-scale excavation of foundation pit precipitation may account for very large proportion, and gushing of spring in serious threat.Therefore the recharging technique under specific condition is needed to be promoted and to apply.
Current main in-problem region is Quaternary aquifer, this stratum watery is good, water yield is large, water level is higher, the amount of recharging of common recharging technique can not meet foundation pit dewatering water yield, and when adopting persistent pressure to recharge, common well drilling technology can produce rock borehole wall overflow phenomena, common direct recharging technique also may destroy ground water regime, affects the quality of underground water.
Utility model content
The purpose of this utility model is exactly that provide a kind of Ground Water Pumping during Excavation Bao Quan and recharge integrated apparatus, this device effectively increases and recharges the water yield in order to solve the problems of the technologies described above, and reduces engineering construction to the impact of spring domain system; Can meet common persistence pressurization and recharge process without borehole wall overflow phenomena, recharge water mass-energy enough meets spring domain system supply water quality requirement.
To achieve these goals, the utility model adopts following technical scheme:
A kind of Ground Water Pumping during Excavation Bao Quan recharges integrated apparatus, comprising: at least one dewatering well, at least one recharge well, recharge Water quality processing system, pressurization collecting system, water quality monitoring system and recharge wellhead assembly;
Describedly recharge that Water quality processing system one end is connected with dewatering well, the other end is connected in series water quality monitoring system successively, pressurization collecting system, wellhead assembly and recharge well;
The underground water extracted out, by recharging Water quality processing system and water quality monitoring system carries out analysis of water, recharges water quality requirement if meet, then enters pressurization collecting system, and the water of pressurization collecting system enters recharge well with constant flow, constant-pressure by recharging wellhead assembly; Otherwise, turn back to and recharge Water quality processing system and again water quality analyzed and process.
The described Water quality processing system that recharges comprises precipitation treatment box and Water-quality treater, described precipitation treatment box is connected with Water-quality treater, described precipitation treatment box is connected with dewatering well by the first force (forcing) pump, and described Water-quality treater is connected with water quality monitoring system respectively with precipitation treatment box.
Described water quality detection system comprises: water quality detection instrument, back-water valve (BWV) and water intaking valve; Described water quality detection instrument is connected with back-water valve (BWV) and water intaking valve respectively; Water quality detection instrument is according to the whether qualified opening and closing controlling back-water valve (BWV) and water intaking valve respectively of the water quality detected;
Described water intaking valve is arranged on water quality monitoring system with on the connecting line of pressurization collecting system, and described back-water valve (BWV) is arranged on the connecting line of water quality monitoring system and precipitation treatment box.
Described pressurization collecting system comprises flow pressure regulating system and water collecting equipment, and described flow pressure regulating system is connected with water collecting equipment, and described flow pressure regulating system is connected with wellhead assembly, and water collecting equipment is connected with water quality monitoring system.
Described flow pressure regulating system comprise flow pressure adjusting device and with its flowmeter be connected respectively and pressure meter; Flow pressure adjusting device and manometric connecting line arrange sensor-based system.
Described wellhead assembly comprise recharge passage, return raise passage and outlet valve, recharge valve and return raise valve, wherein, outlet valve is arranged on well casing, for control well inner air tube, recharge valve to be arranged at and to recharge passage upper end, return and raise valve and be arranged at back and raise passage upper end; Recharge passage to raise passage be all connected well casing with returning.
Described recharge well comprises underground component and overcoat, and wherein, described underground component comprises the well casing and filter pipe that are connected successively from top to bottom; Underground component is connected with wellhead assembly, overcoat comprises double-deck sealing layer, water proof fixed bed and double medium filtration layer, double-deck sealing layer is arranged at outside well casing, the arranged outside of double-deck sealing layer has water proof fixed bed, double medium filtration layer is comprised outside filter pipe, filter pipe lower end is provided with pump chamber, is provided with back and raises submersible pump in pump chamber.
Described double-deck sealing layer, comprises concrete and fixes sealing layer and clay ball sealing layer, and wherein, concrete is fixed sealing layer and is arranged at well casing and wellhead component junction and well casing upper end, and described clay ball sealing layer is arranged at well casing lower end; Sealing layer arranged outside fixed by described concrete cement injection water barrier, extends to the junction that concrete fixes sealing layer and clay ball sealing layer always.
Described double medium filtration layer, comprise internal layer quartz sand and fill out gravel bed and limestone rubble fills out gravel bed, internal layer quartz sand fills out the outside that gravel bed is wrapped in filter pipe, and limestone rubble is filled out gravel bed wrapping inner layer quartz sand and filled out gravel bed; The ballast grain sizes that described internal layer quartz sand fills out gravel bed is 2-4mm; The ballast grain sizes that limestone rubble fills out gravel bed is 5-20mm.
Raise submersible pump for described time and be arranged at distance recharge well shaft bottom 0.3-0.7m, fully will block suspension and discharge, ensure that Hui Yang directly arrives wellhead component by well casing.
Beneficial effect of the present invention:
By groundwater recharge technology, effectively can control the stable of groundwater table near construction area, prevent neighbouring stratum deformation, reduce the security threat of construction to neighbouring resident.
The balance of the supply of spring domain system, runoff, excretion can be kept by groundwater recharge technology, effectively reduce the impact of engineering construction on spring water level.
By groundwater recharge technology, effectively can increase and recharge the water yield, make engineering construction excretion in spring domain system, supply reaches an equilibrium state, protect the stable amount of gushing of spring.
By groundwater recharge technology, the destruction of engineering construction to existing hydrogeological environment can be reduced, protect the underground environment of spring territory scope.
By groundwater recharge technology, can improve and recharge water quality, avoid recharging ground water regime water quality is damaged, can also greatly increase recharge well and return the cycle of raising, greatly add and recharge efficiency and recharge cost.
Groundwater recharge technology, has processed the emission problem of foundation pit dewatering, slow down municipal pipeline pressure.While the lasting increase amount of recharging, process borehole wall overflow phenomena, made to recharge and carry out under the environment of a drying, safety.
Accompanying drawing explanation
Fig. 1 is that the utility model embodiment Ground Water Pumping during Excavation Bao Quan recharges integrated apparatus structural representation;
Fig. 2 is the utility model wellhead assembly structural representation;
Fig. 3 is the utility model recharge well structural representation.
Wherein, 1. dewatering well, 2. settling tank process mouth, 3. precipitate dividing plate, 4. precipitation treatment box, 5. Water-quality treater, 6. water quality monitoring instrument, 7. back-water valve (BWV), 8. water intaking valve, 9. water collecting equipment, 10. flow pressure adjusting device, 11. flowmeters, 12. pressure meters, 13. sensor-based systems, 14. drain taps, 15. recharge passage, raise passage 16. times, 17. recharge wells, 18. recharge water quality monitoring system, 19. wellhead assemblies, 20. pressure flow regulating systems, 21. recharge valve, raise valve 22. times, sealing layer fixed by 23. concrete, 24. 1 are split into well slip casting, 25. cement injection water barriers, 26. clay ball sealing layers, 27. 2 perforate footpaths, 28. well casings, 29. limestone rubbles fill out gravel bed, the layering of 30.PVC pipe, and 31. internal layer quartz sands fill out gravel bed, 32. filter pipes, raise submersible pump 33. times.
Detailed description of the invention
Below in conjunction with drawings and Examples, detailed description of the invention of the present utility model is described in further detail.
For Jinan Spring Region system, Jinan Spring Region supply, runoff, discharge area, hydrogeological conditions is better, Quaternary pore water, igneous rock crevice water, the mutual supply contact in limestone karst water three class aquifer, there is again different Migration mark, constitute the distinctive hydrogeological system in Jinan, it is large that feeding area, spring territory has water yield, the feature that water level is higher.
Above-mentioned special hydrology geological conditions, adopts novel recirculation process, effectively increases and recharge the water yield, reduces engineering construction to the impact of spring domain system.This technology well drilling technology can meet common persistence pressurization and recharge process without borehole wall overflow phenomena, and recharge water mass-energy enough meets spring domain system supply water quality requirement.
As shown in Figure 1, this technology is that a kind of Ground Water Pumping during Excavation Bao Quan recharges integrated apparatus, comprise at least one dewatering well 1, at least one recharge well 17, recharges water quality detection system 18, collecting system of pressurizeing, recharge water quality monitoring system 18 and recharge wellhead assembly 19;
When multiple dewatering well 1, each dewatering well 1 is connected to precipitation treatment box 4 respectively; When multiple recharge well 17, each recharge well 17 is connected with pressure flow regulating system 20 after all connecting wellhead assembly 19 respectively.
Recharge Water quality processing system and comprise precipitation treatment box 4 and Water-quality treater 5, precipitation treatment box 4 is connected with Water-quality treater 5, precipitation treatment box 4 is connected with dewatering well 1 by the first force (forcing) pump, Water-quality treater 5 and precipitation treatment box 4 respectively with recharge water quality monitoring system 18 and be connected.
Wherein precipitation treatment box 4 comprises settling tank process mouth 2 and precipitation dividing plate 3, and Water-quality treater 5 one end is connected with precipitation treatment box 4, the other end with recharge water quality monitoring system 18 and be connected.
Recharge water quality monitoring system 18 and comprise water quality monitoring instrument 6, back-water valve (BWV) 7, water intaking valve 8, water quality monitoring instrument 6 and back-water valve (BWV) 7, water intaking valve 8 connects respectively by sensor, recharge water quality monitoring system 18 other end to be connected with water collecting equipment 9, water collecting equipment 9 other end is connected with flow pressure adjusting device 10, flow pressure adjusting device 10 enters wellhead assembly 19 by flowmeter 11 and pressure meter 12, flowmeter 11, pressure meter 12 is by sensor-based system 13 control flow check piezometric apparatus for adjusting force 10, wellhead assembly 19 comprises drain tap 14, recharge passage 15, return and raise passage 16, wellhead assembly 19 is connected with recharge well 17.
Wherein water quality monitoring system back-water valve (BWV) 7 connects a water quality testing meter (not marking in figure), analyzes the defective reason of water quality, reenters settling tank, then enter water quality monitoring system and again monitor by analyzing and processing subsystem.
As shown in Figure 3, recharge well 17 comprises wellhead assembly 19, common steel tube, filter pipe 32 and pump chamber from top to bottom successively, and outside is followed successively by double-deck sealing layer, water barrier and double medium filtration under upper.Filter pipe 32 is bridge type filter pipe, and double medium filtration layer is that gradual change type filters gravel material, and nexine gravel material adopts quartz sand, grains of sand diameter 2-4mm, outer gravel material adopts limestone rubble, particle diameter 4-20mm, upper part of double water barrier, skin is grouting cement layer, and internal layer is rammed concrete layer.
This ground water recharging well 17 from top to bottom, comprise wellhead assembly 19 successively from inside to outside, sealing layer 23 fixed by concrete, cement injection water barrier 25, clay ball sealing layer 26, well casing 28, limestone rubble fills out gravel bed 29, stone sizes 5-20mm, internal layer quartz sand fills out gravel bed 31, particle diameter 2-4mm, bridge type filter pipe 32, returns and raises submersible pump 33.In this enforcement, one is split into well slip casting 24 is out that 600mm becomes well grouting process, after cement setting is fixing, again adopt 500mm aperture Cheng Jing, concrete is fixed sealing layer 23 and is far longer than the adhesive power with Quaternary system with the adhesive power of cement injection water barrier 25 grouting cement.
As shown in Figure 2, wherein wellhead assembly 19 mainly comprises and recharges passage 15 with returning and raise passage 16, drain tap 14, recharge valve 21, return and raise valve 22, when starting to recharge, in pit shaft, air can enter aquifer along with recharge water, cause gas bubble blockage, control air in pit shaft when recharging and carrying out with 1 outlet valve.Carry out along with recharging, because plugging reason, the amount of recharging can decay gradually, therefore needs regularly to carry out Hui Yang, will recharge valve 21 and close, and open back and raise valve 22, starts shaft bottom submersible pump.
Recharge valve 21 to be arranged at and to recharge on passage, return and raise valve 22 and be arranged at back and raise on passage, shorten back the time of raising, improve and recharge efficiency.
Gravel is filled out in this technology well drilling technology pvc pipe layering 30, completes under well-flushing after pipe, enters under using diameter 400mmPVC pipe in addition, and insert 2-4mm quartz sand by calculating internal layer, skin inserts 5-20mm limestone gravel, recharges aquifer thickness until exceed.Top concrete is inserted rear closely knit, makes it fully to bond with cement.
Its ectomesoderm fills out the requirement of gravel macadam gradating and aquifer macadam gradating is close.
Perforate uses 600mm aperture Cheng Jing, adopts cement injection to relative water resisting layer, then uses two to open 500mm aperture 27 Cheng Jing again, fully solves borehole wall overflow phenomena.Recharge well is followed successively by wellhead component, steel pipe, filter pipe and pump chamber from top to bottom, and fill out gravel between filter pipe and aquifer and adopt layering to fill out gravel way, internal layer adopts quartz sand, particle diameter 2-4mm, outer employing carbonate rubble, particle diameter 5-20mm.Wherein layering is filled out gravel and is utilized common PVC pipe, caliber 400mm, successively inserting, considerably increasing back the cycle of raising by calculating.Top sealing layer to wellhead component adopts that to ram filling jarring closely knit, make rammer layer fully and grouting cement fully bond.
Establish back bottom well casing and raise submersible pump 33, this time raises submersible pump 33 from shaft bottom 0.5m, can make back to raise better effects if, and can also fully be discharged by blocking suspension, Hui Yang directly arrives wellhead component by well casing, shortens back the time of raising, and greatly improves and recharges efficiency.
The use flow process of this technology is: first utilize the water extracting dewatering well 1 li to reduce Water Level in Foundation Pit in engineering construction, the underground water extracted out enters precipitation treatment box 4, the other end of precipitation treatment box 4 is entered by precipitation dividing plate 3, regularly settling tank process mouth 2 is discharged, then analysis of water is carried out by Water-quality treater 5 and water quality monitoring instrument 6, recharge water quality if meet to ask, enter and recharge water collecting equipment, if do not meet water quality requirement, then again water quality analyzed and process, get back to precipitation treatment box 4, the water of water collecting equipment 9 enters recharge well 17 with constant flow rated pressure by wellhead assembly 19 by pressure flow regulating system 20,
Wherein recharge the initial stage, enter aquifer for preventing pit shaft inner air with pouring water and cause gas bubble blockage, drain tap 14 in wellhead assembly need be opened, by air emptying in pit shaft.
Carry out along with recharging, aquifer permeability slowly weakens, and closes and recharges passage 15, opens back and raises passage 16 valve and carry out back raising process.
By reference to the accompanying drawings detailed description of the invention of the present utility model is described although above-mentioned; but the restriction not to the utility model protection domain; one of ordinary skill in the art should be understood that; on the basis of the technical solution of the utility model, those skilled in the art do not need to pay various amendment or distortion that creative work can make still within protection domain of the present utility model.
Claims (10)
1. Ground Water Pumping during Excavation Bao Quan recharges an integrated apparatus, it is characterized in that, comprising: at least one dewatering well, at least one recharge well, recharge Water quality processing system, pressurization collecting system, water quality monitoring system and recharge wellhead assembly;
Describedly recharge that Water quality processing system one end is connected with dewatering well, the other end is connected in series water quality monitoring system successively, pressurization collecting system, wellhead assembly and recharge well;
The underground water extracted out, by recharging Water quality processing system and water quality monitoring system carries out analysis of water, recharges water quality requirement if meet, then enters pressurization collecting system, and the water of pressurization collecting system enters recharge well with constant flow, constant-pressure by recharging wellhead assembly; Otherwise, turn back to and recharge Water quality processing system and again water quality analyzed and process.
2. a kind of Ground Water Pumping during Excavation Bao Quan as claimed in claim 1 recharges integrated apparatus, it is characterized in that, the described Water quality processing system that recharges comprises precipitation treatment box and Water-quality treater, described precipitation treatment box is connected with Water-quality treater, described precipitation treatment box is connected with dewatering well by the first force (forcing) pump, and described Water-quality treater is connected with water quality monitoring system respectively with precipitation treatment box.
3. a kind of Ground Water Pumping during Excavation Bao Quan as claimed in claim 1 recharges integrated apparatus, and it is characterized in that, described water quality detection system comprises: water quality detection instrument, back-water valve (BWV) and water intaking valve; Described water quality detection instrument is connected with back-water valve (BWV) and water intaking valve respectively; Water quality detection instrument is according to the whether qualified opening and closing controlling back-water valve (BWV) and water intaking valve respectively of the water quality detected;
Described water intaking valve is arranged on water quality monitoring system with on the connecting line of pressurization collecting system, and described back-water valve (BWV) is arranged on the connecting line of water quality monitoring system and precipitation treatment box.
4. a kind of Ground Water Pumping during Excavation Bao Quan as claimed in claim 1 recharges integrated apparatus, it is characterized in that, described pressurization collecting system comprises flow pressure regulating system and water collecting equipment, described flow pressure regulating system is connected with water collecting equipment, described flow pressure regulating system is connected with wellhead assembly, and water collecting equipment is connected with water quality monitoring system.
5. a kind of Ground Water Pumping during Excavation Bao Quan as claimed in claim 3 recharges integrated apparatus, it is characterized in that, described flow pressure regulating system comprise flow pressure adjusting device and with its flowmeter be connected respectively and pressure meter; Flow pressure adjusting device and manometric connecting line arrange sensor-based system.
6. a kind of Ground Water Pumping during Excavation Bao Quan as claimed in claim 1 recharges integrated apparatus, it is characterized in that, described wellhead assembly comprise recharge passage, return raise passage and outlet valve, recharge valve and return raise valve, wherein, outlet valve is arranged on well casing, for control well inner air tube, recharge valve and be arranged at and recharge passage upper end, return and raise valve and be arranged at back and raise passage upper end; Recharge passage to raise passage be all connected well casing with returning.
7. a kind of Ground Water Pumping during Excavation Bao Quan as claimed in claim 1 recharges integrated apparatus, and it is characterized in that, described recharge well comprises underground component and overcoat, and wherein, described underground component comprises the well casing and filter pipe that are connected successively from top to bottom; Underground component is connected with wellhead assembly, overcoat comprises double-deck sealing layer, water proof fixed bed and double medium filtration layer, double-deck sealing layer is arranged at outside well casing, the arranged outside of double-deck sealing layer has water proof fixed bed, double medium filtration layer is comprised outside filter pipe, filter pipe lower end is provided with pump chamber, is provided with back and raises submersible pump in pump chamber.
8. a kind of Ground Water Pumping during Excavation Bao Quan as claimed in claim 7 recharges integrated apparatus, it is characterized in that, described double-deck sealing layer, comprise concrete and fix sealing layer and clay ball sealing layer, wherein, concrete is fixed sealing layer and is arranged at well casing and wellhead component junction and well casing upper end, and described clay ball sealing layer is arranged at well casing lower end; Sealing layer arranged outside fixed by described concrete cement injection water barrier, extends to the junction that concrete fixes sealing layer and clay ball sealing layer always.
9. a kind of Ground Water Pumping during Excavation Bao Quan as claimed in claim 7 recharges integrated apparatus, it is characterized in that, described double medium filtration layer, comprise internal layer quartz sand and fill out gravel bed and limestone rubble fills out gravel bed, internal layer quartz sand fills out the outside that gravel bed is wrapped in filter pipe, and limestone rubble is filled out gravel bed wrapping inner layer quartz sand and filled out gravel bed; The ballast grain sizes that described internal layer quartz sand fills out gravel bed is 2-4mm; The ballast grain sizes that limestone rubble fills out gravel bed is 5-20mm.
10. a kind of Ground Water Pumping during Excavation Bao Quan as claimed in claim 7 recharges integrated apparatus, it is characterized in that, raise submersible pump for described time and be arranged at distance recharge well shaft bottom 0.3-0.7m, fully will block suspension and discharge, ensure that Hui Yang directly arrives wellhead component by well casing.
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| CN201520021663.1U CN204435350U (en) | 2015-01-13 | 2015-01-13 | A kind of Ground Water Pumping during Excavation Bao Quan recharges integrated apparatus |
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| CN201520021663.1U CN204435350U (en) | 2015-01-13 | 2015-01-13 | A kind of Ground Water Pumping during Excavation Bao Quan recharges integrated apparatus |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104594327A (en) * | 2015-01-13 | 2015-05-06 | 济南轨道交通集团有限公司 | Water settling, spring protection and recharging integrated device for foundation pit engineering |
| CN105133570A (en) * | 2015-09-17 | 2015-12-09 | 济南轨道交通集团有限公司 | Single-well single-control pumping and injection integrated system and control method thereof |
-
2015
- 2015-01-13 CN CN201520021663.1U patent/CN204435350U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104594327A (en) * | 2015-01-13 | 2015-05-06 | 济南轨道交通集团有限公司 | Water settling, spring protection and recharging integrated device for foundation pit engineering |
| CN104594327B (en) * | 2015-01-13 | 2016-06-15 | 济南轨道交通集团有限公司 | A kind of Ground Water Pumping during Excavation Bao Quan recharges integrated apparatus |
| CN105133570A (en) * | 2015-09-17 | 2015-12-09 | 济南轨道交通集团有限公司 | Single-well single-control pumping and injection integrated system and control method thereof |
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