CN104594325A - Quaternary micro-confined water spring protection type recharging well and method - Google Patents
Quaternary micro-confined water spring protection type recharging well and method Download PDFInfo
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- CN104594325A CN104594325A CN201510016027.4A CN201510016027A CN104594325A CN 104594325 A CN104594325 A CN 104594325A CN 201510016027 A CN201510016027 A CN 201510016027A CN 104594325 A CN104594325 A CN 104594325A
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- 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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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/02—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against ground humidity or ground water
- E02D31/04—Watertight packings for use under hydraulic pressure
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- General Engineering & Computer Science (AREA)
- Hydrology & Water Resources (AREA)
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- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention discloses a quaternary micro-confined water spring protection type recharging well and a method. The quaternary micro-confined water spring protection type recharging well comprises a wellhead part, an underground part and a protecting layer, wherein the underground part comprises a well pipe and a water filtering pipe which are sequentially connected from top to bottom, the wellhead part is arranged at the end opening of the recharging well, and is connected with the underground part, the protecting layer comprises double water sealing layers, a water separating layer and double filtering layers, the double water sealing layers coat the well pipe, and are arranged at the outer side of the well pipe, the water separating layer is arranged at the outer side of the double water sealing layers, the double water filtering layers are arranged at the exterior of the water filtering pipe, a pump chamber is arranged at the lower end of the water filtering pipe, and a return lift submersible pump is arranged in the pump chamber. The quaternary micro-confined water spring protection type recharging well has the advantages that the problem of water overflowing of a recharging well wall caused by long-time sustained pressurizing is solved, and the recharging capacity is improved; on the basis of solving the physical blockage problem of the recharging well, the disturbance on the infiltration capacity of a water-containing layer in the recharging process is reduced, and the original infiltration capacity of the water-containing layer is greatly guaranteed.
Description
Technical field
The present invention relates to a kind of Quaternary system low pressure water and protect spring recharge well and method.
Background technology
For the geohydrologic unit class area of relative closure, spring territory underground water has and buries the large feature of shallow, the rich water yield, and in underground engineering construction process, soil excavation foundation pit dewatering amount is very large, springs can be threatened gush, geological environment generation is around destroyed and has harmful effect to Adjacent Buildings.For balance urban construction and environmental geological protection problem; at present; according to region hydrogeology feature needs; carrying out that pressurization recharges is the most effective solution; but there is following defect in existing common recharge well technique: continue to have push back in filling process have destroy recharge the penetrating power in aquifer, the amount of recharging carries out the phenomenon that decays in time; recharge borehole wall separates the water concrete and stratum can produce spilling water phenomenon, return Yang Shixu and again descend pump, affect and recharge efficiency.
Summary of the invention
The present invention is in order to solve the problem, and propose a kind of Quaternary system low pressure water guarantor spring recharge well and become well and method, this device solves and continues for a long time to push back the filling borehole wall and fill out gravel contact zones, fill out gravel and stratum contact zones preventing water phenomenon, improves water recharge capacity; Reduce the disturbance of the process of recharging to flow field, aquifer, ensure that the former penetrating power in aquifer greatly, ensure that in well have good current infiltration lane, shorten back the time of raising, improve and recharge efficiency.
To achieve these goals, the present invention adopts following technical scheme:
A kind of Quaternary system low pressure water protects spring recharge well, comprises wellhead component, underground component and overcoat, and wherein, described underground component comprises the well casing and filter pipe that are connected successively from top to bottom; Described wellhead component is arranged at the port position of recharge well, be connected with underground component, overcoat comprises double-deck sealing layer, water barrier and double medium filtration layer, double-deck sealing layer parcel well casing, be arranged at outside it, the bottom of double-deck sealing layer is provided with water barrier, comprises double medium filtration layer outside filter pipe, filter pipe lower end is provided with pump chamber, is provided with back and raises submersible pump in pump chamber.
Described wellhead component, comprise recharge passage, return raise passage and outlet valve, recharge valve and return raise valve, wherein, outlet valve is arranged on wellhead assembly, for control well inner air tube, recharge valve and be arranged at and recharge the outer device junction of passage and well, return and raise valve and be arranged at back and raise passage upper end; Recharge passage, return and raise passage and all connect well casing by wellhead assembly.
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 concrete is fixed sealing layer to wellhead component and is adopted that to ram filling jarring closely knit, make rammer layer fully and grouting cement fully bond.
Described cement injection water barrier adopts two to open grouting process, and one opens 600mm becomes well cement slip casting, and two open 500mm becomes well.
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.
Described internal layer quartz sand is filled out layering that gravel bed and limestone rubble fill out gravel bed and is filled out gravel and utilize pvc pipe successively to insert.
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.
Described well casing is steel pipe.
Be applicable to a process for above-mentioned recharge well, comprise the following steps:
(1) recharge well is followed successively by wellhead component, steel pipe, filter pipe and pump chamber from top to bottom, and wellhead component is that Hui Yang recharges integrated device;
(2) filling out gravel between filter pipe and aquifer adopts layering to fill out gravel way, and internal layer adopts quartz sand, outer employing carbonate rubble;
(3) steel pipe arranged outside has double-deck sealing layer and two to open grouting process water barrier, upper strata sealing layer is that sealing layer fixed by concrete, lower floor's sealing layer is clay ball sealing layer, and top sealing layer to wellhead component adopts that to ram filling jarring closely knit, make rammer layer fully and grouting cement fully bond;
(4) submersible pump is established bottom well casing.
In described step (2), layering is filled out gravel and is utilized pvc pipe, caliber 400mm, successively inserting, increasing back the cycle of raising by calculating; Double medium filtration layer is internal layer quartz sand, and particle diameter is 2-4mm, and filtration outer layer is carbonate rubble, and particle diameter is 5-20mm.
In described step (3), two open grouting process water barrier is out that 600mm becomes well cement slip casting, and two open 500mm becomes well.
Beneficial effect of the present invention is:
(1) adopt Novel wellhead well drilling technology, make continue to push back fill with pressure reach 1MPa time, the borehole wall, without overflow phenomena, achieves recharge well persistent pressure and recharges, and can increase and recharge flow 80% under continuous state;
(2) wellhead component comprise recharge passage with return raise passage, shorten back the time of raising, improve and recharge efficiency;
(3) gravel technique is filled out in employing, while the guarantee cross-section of river, the particle diameter 5-20mm limestone rubble that outer employing is close with aquifer, make recharge well flow field and aquifer flow field similarity, protect the lasting penetrating power of recharging aquifer, internal layer adopts 2-4mm quartz sand, can play the effect in fixing well casing and aquifer, can effectively filter aquifer suspension again;
(4) solve and continue there is each contact zones preventing water phenomenon of pressure recharge well for a long time, improve water recharge capacity; Reduce the disturbance of the process of recharging to flow field, aquifer, ensure that the former penetrating power in aquifer greatly, ensure that in well have good current infiltration lane, shorten back the time of raising, improve and recharge efficiency.
Accompanying drawing explanation
Fig. 1 is one-tenth well construction figure of the present invention;
Fig. 2 is wellhead component sketch of the present invention.
Wherein, 1, outlet valve; 2, valve is recharged; 3, return and raise valve; 4, wellhead assembly; 5, sealing layer fixed by concrete; 6, one the slip casting of 600mm one-tenth well is opened; 7, cement injection water barrier; 8, clay ball sealing layer; 9, two perforate footpath 500mm; 10, well casing; 11, limestone rubble fills out gravel bed; 12, pvc pipe layering; 13, internal layer quartz sand fills out gravel bed; 14, filter pipe; 15, return and raise submersible pump.
Detailed description of the invention:
Below in conjunction with accompanying drawing and embodiment, the invention will be further described.
As shown in Figure 1, a kind of ground water recharging well, comprises wellhead component 4, common steel tube, filter pipe 14 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 14 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 from top to bottom, comprise wellhead component 4 successively from inside to outside, sealing layer 5 fixed by concrete, cement injection water barrier 7, clay ball sealing layer 8, well casing 10, limestone rubble fills out gravel bed 11, stone sizes 5-20mm, internal layer quartz sand fills out gravel bed 13, particle diameter 2-4mm, bridge type filter pipe 14, returns and raises submersible pump 15.In this enforcement, 6 are out that 600mm becomes well grouting process, and after cement setting is fixing, again adopt 9 one-tenth, 500mm aperture well, the adhesive power of 5 concrete water barriers and 7 grouting cements is far longer than the adhesive power with Quaternary system.
As shown in Figure 2, wherein wellhead component 4 mainly comprises outlet valve 1, recharges valve 2, returns and raise valve 3, and when starting to recharge, in pit shaft, air can enter aquifer along with recharge water, causes gas bubble blockage, controls 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 2 and close, and open back and raise valve 3, starts shaft bottom submersible pump.
Wellhead component comprises recharges passage with returning and raises passage, recharges valve 2 and is arranged at and recharges on passage, returns to raise valve 3 and be arranged at back and raise on passage, shortens back the time of raising, improves and recharge efficiency.
Gravel is filled out in this technology well drilling technology pvc pipe layering 12, 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 500mm aperture 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 submersible pump bottom well casing, this submersible pump, 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.
By reference to the accompanying drawings the specific embodiment of the present invention is described although above-mentioned; but not limiting the scope of the invention; one of ordinary skill in the art should be understood that; on the basis of technical scheme of the present invention, those skilled in the art do not need to pay various amendment or distortion that creative work can make still within protection scope of the present invention.
Claims (10)
1. Quaternary system low pressure water protects a spring recharge well, it is characterized in that: comprise wellhead component, underground component and overcoat, and wherein, described underground component comprises the well casing and filter pipe that are connected successively from top to bottom; Described wellhead component is arranged at the port position of recharge well, be connected with underground component, overcoat comprises double-deck sealing layer, water barrier and double medium filtration layer, double-deck sealing layer parcel well casing, be arranged at outside it, the arranged outside of double-deck sealing layer has water barrier, comprises double medium filtration layer outside filter pipe, filter pipe lower end is provided with pump chamber, is provided with back and raises submersible pump in pump chamber.
2. a kind of Quaternary system low pressure water as claimed in claim 1 protects spring recharge well, it is characterized in that: described wellhead component, 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 flash, return and raise valve and be arranged at back and raise passage upper end; Recharge passage, return and raise passage and all connect well casing.
3. a kind of Quaternary system low pressure water as claimed in claim 1 protects spring recharge well, 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.
4. a kind of Quaternary system low pressure water as claimed in claim 3 protects spring recharge well, it is characterized in that: 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 concrete is fixed sealing layer to wellhead component and is adopted that to ram filling jarring closely knit, make rammer layer fully and grouting cement fully bond.
5. a kind of Quaternary system low pressure water as claimed in claim 4 protects spring recharge well, it is characterized in that: described cement injection water barrier adopts two to open grouting process, and one opens 600mm becomes well cement slip casting, and two open 500mm becomes well.
6. a kind of Quaternary system low pressure water as claimed in claim 1 protects spring recharge well, 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.
7. a kind of Quaternary system low pressure water as claimed in claim 6 protects spring recharge well, it is characterized in that: 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; Described internal layer quartz sand is filled out layering that gravel bed and limestone rubble fill out gravel bed and is filled out gravel and utilize pvc pipe successively to insert.
8. be applicable to a process for the recharge well according to any one of claim 1-7, it is characterized in that: comprise the following steps:
(1) recharge well is followed successively by wellhead component, steel pipe, filter pipe and pump chamber from top to bottom, and wellhead component is that Hui Yang recharges integrated device;
(2) filling out gravel between filter pipe and aquifer adopts layering to fill out gravel way, and internal layer adopts quartz sand, outer employing carbonate rubble;
(3) steel pipe arranged outside has double-deck sealing layer and two to open grouting process water barrier, upper strata sealing layer is that sealing layer fixed by concrete, lower floor's sealing layer is clay ball sealing layer, and top sealing layer to wellhead component adopts that to ram filling jarring closely knit, make rammer layer fully and grouting cement fully bond;
(4) submersible pump is established bottom well casing.
9. process as claimed in claim 8, is characterized in that: in described step (2), layering is filled out gravel and utilized pvc pipe, caliber 400mm, successively inserting, increasing back the cycle of raising by calculating; Double medium filtration layer is internal layer quartz sand, and particle diameter is 2-4mm, and filtration outer layer is carbonate rubble, and particle diameter is 5-20mm.
10. process as claimed in claim 8, is characterized in that: in described step (3), and two open grouting process water barrier is out that 600mm becomes well cement slip casting, and two open 500mm becomes well.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510016027.4A CN104594325B (en) | 2015-01-13 | 2015-01-13 | A kind of Quaternary system low pressure water protects spring inverted well and method |
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| CN201510016027.4A CN104594325B (en) | 2015-01-13 | 2015-01-13 | A kind of Quaternary system low pressure water protects spring inverted well and method |
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| CN104594325A true CN104594325A (en) | 2015-05-06 |
| CN104594325B CN104594325B (en) | 2016-07-27 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108036985A (en) * | 2017-12-27 | 2018-05-15 | 刘睿洋 | A kind of fracture grouting slurry arteries and veins makes and infiltration coefficient detection device and method |
| CN109629586A (en) * | 2019-01-15 | 2019-04-16 | 上海长凯岩土工程有限公司 | A kind of inverted well with filter structure |
| CN109879465A (en) * | 2019-03-29 | 2019-06-14 | 中国科学院武汉岩土力学研究所 | A kind of loose sand heat storage underground heat recovery well underground Filtration-Precipitation device |
| CN113279451A (en) * | 2021-06-21 | 2021-08-20 | 中国建筑第四工程局有限公司 | Full-automatic monitoring and recharging device next to underground deep foundation pit underground water level of subway |
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| CN204435349U (en) * | 2015-01-13 | 2015-07-01 | 济南轨道交通集团有限公司 | A kind of Quaternary system low pressure water protects spring recharge well |
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| JPH0813463A (en) * | 1994-06-27 | 1996-01-16 | Toyo Constr Co Ltd | Drainage of underground water and drainage device |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108036985A (en) * | 2017-12-27 | 2018-05-15 | 刘睿洋 | A kind of fracture grouting slurry arteries and veins makes and infiltration coefficient detection device and method |
| CN108036985B (en) * | 2017-12-27 | 2023-08-11 | 刘睿洋 | Device and method for manufacturing split grouting slurry vein and detecting permeability coefficient |
| CN109629586A (en) * | 2019-01-15 | 2019-04-16 | 上海长凯岩土工程有限公司 | A kind of inverted well with filter structure |
| CN109629586B (en) * | 2019-01-15 | 2024-02-06 | 上海长凯岩土工程有限公司 | Recharging well with water filtering structure |
| CN109879465A (en) * | 2019-03-29 | 2019-06-14 | 中国科学院武汉岩土力学研究所 | A kind of loose sand heat storage underground heat recovery well underground Filtration-Precipitation device |
| CN109879465B (en) * | 2019-03-29 | 2024-01-16 | 中国科学院武汉岩土力学研究所 | Underground filtering-precipitating device for loose sandstone thermal storage geothermal exploitation well |
| CN113279451A (en) * | 2021-06-21 | 2021-08-20 | 中国建筑第四工程局有限公司 | Full-automatic monitoring and recharging device next to underground deep foundation pit underground water level of subway |
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| CN104594325B (en) | 2016-07-27 |
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