CN108266912A - A kind of recharge system and recharge method using shallow layer geothermal energy - Google Patents
A kind of recharge system and recharge method using shallow layer geothermal energy Download PDFInfo
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- CN108266912A CN108266912A CN201810260349.7A CN201810260349A CN108266912A CN 108266912 A CN108266912 A CN 108266912A CN 201810260349 A CN201810260349 A CN 201810260349A CN 108266912 A CN108266912 A CN 108266912A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/10—Geothermal energy
Abstract
The present invention provides a kind of recharge systems and recharge method using shallow layer geothermal energy, recharge system includes being embedded in the recharge pond of surface soil layer, recharge bottom of pond portion is provided with several water seepage holes, and the underface of water seepage hole, which is excavated, filter well, and port of the filter well far from recharge pond is connected with water-bearing layer；Filtrate is filled in filter well；Recharge pond both sides are equipped with the pumped well below embedment earth's surface, and the middle and lower part of pumped well is equipped with drainage section, and drainage section is connected at least one layer in water-bearing layer.Recharge method includes addressing, builds recharge pond, filling filtrate and recharge flow.Beneficial effects of the present invention are：Recharge well-digging quantity is reduced, is saved because well-digging occupies excessive land area, greatly reduces land used input and economic input；Recharge amount and water withdrawal are essentially identical, effectively avoid the waste of water resource, while avoid causing geological disaster due to largely newly-built water supply well evacuates geology；Water circular flow process does not generate pollutant, avoids generating pollution to groundwater environment.
Description
Technical field
The invention belongs to clean energy resourcies to utilize field, more particularly to a kind of recharge system and recharge using shallow layer geothermal energy
Method.
Background technology
With the development of economy with the raising of living standards of the people, the heat supply of public building and house, air-conditioning have become general
All over demand.Society is one of clean energy resource representative objectively to the limitation of the heat supplies such as coal, gas to the rigors of environmental protection
Water source heat pump system be used widely and provide wide development space.
Water source heat pump technology develops to today, and the technology and equipment of ground more than heat pump system is quite ripe, main
Technical bottleneck is the recharge problem of underground water source.Groundwater recharge technology is also immature at present, the pouring-in recharge of generally use
Mode, generally using pipe well carry out, using without press (gravity flow), negative pressure (vacuum) the methods of.Underground water pipe well recycling mode includes
Filling mode is taken out with well and different well takes out filling mode, this two kinds of recycling modes mainly have following performance：
Filling mode is taken out with well to refer to, from pipe well bottom groundwater abstraction at a glance, send to heat pump unit after exchanging heat, then by returning
Water pipe is sent back in same a well.Some penetrates into water-bearing layer to recharge water, and another part after being mixed with well water is extracted and send again
To set heat exchange, formed and recycled with well water in pipe well at a glance.Taking out filling mode with well, to be suitable for underground reservoir thickness big, oozes
Permeability is good, and hydraulic gradient is big, the fast area of through flow velocity.Its advantage is to save the pipe well quantity of underground water source system, is reduced
The initial cost of a part of water supply well.But a disadvantage is that in the process of running, short circuit occurs for a part of return water and part water outlet
Phenomenon, the two are mixed to form self-loopa, well leaving water temperature are influenced very big.Heat supply in winter run when, well water leaving water temperature by
It gradually reduces, when cooling in summer is run, well water leaving water temperature gradually rises.
Different well takes out filling mode and refers to the groundwater abstraction from certain at a glance pipe well water-bearing layer, send to heat pump unit after exchanging heat, by
Return pipe is sent into another pipe well recharge to water-bearing layer, so as to formed some areas take out fill between well in water-bearing layer underground water with
The cyclic utilization system of heat exchange in soil.Different well takes out the range that the hydrogeologic condition that filling mode is suitble to takes out filling mode than same well
It is wide.Its advantage is that recharge amount is more than with well recharge.Pumping has certain distance between filling well, and return water temperature does not have shadow to supply water temperature
It rings, unit operation efficiency will not be caused to decline, thus operating cost ratio is low with well pumping filling mode.Winter and summer Various Seasonal fortune
During row, use can be switched by taking out filling well.Major defect is the increase in the pipe well quantity of underground water source system, increases water supply well
Initial cost.
Simultaneously above two recycling mode also there are recharge it is not smooth the problem of, so the original feed well generally used draws water
Well construction is not suitable with as inverted well.
Invention content
The recharge system of shallow layer geothermal energy and recharge side are utilized in order to solve the above technical problem, the present invention provides a kind of
Method.
Specific technical solution of the present invention is as follows：
A kind of recharge system using shallow layer geothermal energy, the recharge system include being embedded in the recharge pond of surface soil layer,
The recharge bottom of pond portion is provided with several water seepage holes, and the underface of the water seepage hole, which is excavated, filter well, and the filter well is far from institute
The port for stating recharge pond is connected with the water-bearing layer of below ground；Filtrate is filled in the filter well；
Recharge pond both sides are equipped with the pumped well below embedment earth's surface, and the middle and lower part of the pumped well is equipped with drainage section,
The drainage section is connected at least one layer in the water-bearing layer.
Further, the filter well includes sequentially connected water shutoff pipeline section from top to bottom and infiltration pipeline section；The water shutoff
Pipeline section locates below ground level ground interval, and the soakaway trench section is located at the water-bearing interval of the ground interval lower floor, the water shutoff
The filtrate is filled in pipeline section and the infiltration pipeline section.
Further, the porosity of the filtrate skeleton is greater than or equal to the porosity in the water-bearing layer.
Further, the filtrate includes the material of following parts by weight：
53-76 parts of quartzite；
13.2-15.3 parts of dolomite；
8-11.7 parts of boulder and cobble.
Further, the filtrate grading in the infiltration pipeline section is less than the grading of filtrate described in the water shutoff pipeline section；Institute
State water shutoff pipeline section with it is described infiltration connection between pipe sections the filtrate along the water shutoff pipeline section to it is described infiltration pipeline section direction by
Slightly to subdivision of reservoir and even transition, until identical with the grading of filtrate described in the infiltration pipeline section；
Preferably,
When the water-bearing layer includes powder, fine sand, middle sand, any one in coarse sand, the grain size of the filtrate with it is described
The correspondence of water-bearing layer grain size is：D50/d50=6~8, wherein, D50 is that grain size is accounted for less than sand, the gravel of D50 values in filtrate
The 50% of total weight；D50 is that grain size accounts for the 50% of total weight less than sand, the gravel of d50 values in water-bearing layer；
When the water-bearing layer includes gravelly soil, the grain size of the filtrate and the correspondence of the water-bearing layer grain size are：
D50/d20=6~8, wherein, d20 is that grain size accounts for the 20% of total weight less than sand, the gravel of d20 values in water-bearing layer.
Further, the water-bearing layer from top to bottom includes the first water-bearing layer, the second water-bearing layer and third water-bearing layer, adjacent
Pass through gravel layer interval between the water-bearing layer；Port of the filter well far from the recharge pond connects with first water-bearing layer
It is logical.
Further, the recharge bottom of pond portion further includes：Several partition panels vertically set, the partition panel will
The recharge pond is divided into several independent recharge areas, and the adjacent recharge area of connection is horizontally arranged on any partition panel
Connecting pipe.
Further, the pumped well is included for the interior well casing to draw water and the outer well being socketed on outside the interior well casing
Pipe, filled with the non-return water material for preventing recharge water from entering the interior well casing between the interior well casing and the outer well tube.
Further, the outer wellhead brick work of the pumped well has the closed well room for wrapping up the pumped well well head, the pumping
The pipeline of well runs through the closed well room, and well lid is provided at the top of the closed well room.
A kind of recharge method using above-mentioned recharge system, the recharge method include：
Main recharge：Recharge water is discharged to through pipe network in the recharge pond, and recharge water is flowed into after precipitation by the water seepage hole
The filter well, and be seeped into the water-bearing layer of below ground after the media filtration；
Assist recharge：Recharge water is discharged by water resource heat pump between the interior well casing and the outer well tube, through gravity
It is seeped into the water-bearing layer of below ground downwards, and is permeated by the tube wall synchronization of the outer well tube to stratum；
Preferably, the recharge pond construction as follows：
(1) addressing：The downstream for choosing heating region interflow subsurface drainage direction is the construction area of recharge system；
(2) recharge pond is built：A. the recharge of a cuboid is excavated out straight down along surface soil layer in construction area
Pond；
B. several water seepage holes are outputed in the bottom in the recharge pond；
C. the underface of each water seepage hole excavate filter well, port of the filter well far from the recharge pond with
The water-bearing layer connection of below ground；
(3) filtrate is filled：Filtrate is filled into the filter well.
Beneficial effects of the present invention are as follows：
In the case where meeting water recharge capacity so that the various inverted wells height of existing vast number is intensive, reduces back
Well-digging quantity is filled, saves the land used input and warp for because well-digging occupies excessive land area, greatly reducing initial stage recharge system
Ji input, improves social benefit；Recharge amount and water withdrawal are essentially identical, effectively avoid the waste of water resource, while avoid because big
The newly-built water supply well of amount evacuates geology and causes geological disaster；Water cycle is carried out in closed conduct, and operational process does not generate dirt
Object is contaminated, avoids generating pollution to groundwater environment.
Description of the drawings
Fig. 1 is recharge pond recharging technique schematic diagram；
Fig. 2 is recharge pond vertical view；
Fig. 3 is filter well structure diagram；
Fig. 4 is closed well room structure diagram.
Wherein：1st, recharge pond；2nd, water seepage hole；3rd, filter well；301st, water shutoff pipeline section；302nd, seep water pipeline section；303rd, rock-soil layer
Section；304th, water-bearing interval；4th, filtrate；5th, pumped well；501st, drainage section；502nd, interior well casing；503rd, outer well tube；6th, non-return water material；
7th, partition panel；8th, connecting pipe；9th, surface soil layer；10th, the first water-bearing layer；11st, the second water-bearing layer；12nd, third water-bearing layer；13、
Closed well room；14th, well lid.
Specific embodiment
The present invention is described in further detail with following embodiment below in conjunction with the accompanying drawings.
Embodiment 1
According to an embodiment of the invention, a kind of recharge system using shallow layer geothermal energy is provided, as depicted in figs. 1 and 2.
Recharge system includes being embedded in the recharge pond 1 of surface soil layer 9, and in the present embodiment, the parameter in recharge pond 1 is width 5m, long 40m, depth
2m.In work progress, to avoid low ground water and rainwater pollution recharge water, it is preferred that take box integral type in recharge pond 1
Cast in situs improves the seepage capability in recharge pond 1 while the integral strength for ensureing recharge pond 1, effectively prevent pollution hidden trouble
Generation.
When the water in recharge pond 1 is on the low side, recharge pressure reduction, convenient for guaranteed water level height, it is ensured that recharge pressure, into
And larger osmotic pressure is formed to filter well 3, it is further preferred that 1 bottom of recharge pond be vertically provided with it is several high
The partition panel 7 for 0.5m-1m is spent, recharge pond 1 is divided into several independent recharge areas by partition panel 7.In the present embodiment, recharge pond
1 bottom vertical direction is provided with the concrete partition plate 7 of 3 1m high, and recharge pond 1 is divided into 4 independent recharge areas.To make
The recharge water water surface into recharge pond 1 maintains balance between each recharge area, still more preferably, during construction, it is any every
The connecting pipe 8 for connecting adjacent recharge area is laterally embedded on disconnected plate 7.In the present embodiment, a diameter of 20cm of connecting pipe 8,
Positioned at partition panel 7 away from bottom of pond 20cm at, and often fan partition panel 7 on be provided with 2 connecting pipes 8.
1 bottom of recharge pond is provided with several water seepage holes 2, and the underface of water seepage hole 2, which is excavated, filter well 3, and filter well 3 is separate to return
The port for filling pond 1 is connected with the water-bearing layer of below ground.Wherein, the water-bearing layer of underground from top to bottom includes the first water-bearing layer
10th, the second water-bearing layer 11 and third water-bearing layer 12 pass through gravel layer interval between adjacent aquifers.The depth of filter well according to work as
It depending on the geological condition on ground, under normal circumstances, needs to be closed first surface soil layer 9, connects the first water-bearing layer 10, it is excellent
Choosing, port of the filter well 3 far from recharge pond 1 is connected with the first water-bearing layer 10 of below ground.In the present embodiment, filter well 3
It it is 11 meters~20 meters along 2 downward depth of water seepage hole.
Filtrate 4 is filled in filter well 3；1 both sides of recharge pond are equipped with the pumped well 5 below embedment earth's surface, in pumped well 5
Lower part is equipped with drainage section 501, and drainage section 501 is connected at least one layer in water-bearing layer.
The technical program is proved by the practical application of following Engineering Projects.
2013,300,000 square metres of Zunhua City Longhua name garden general planning construction area carried out the winter using water source heat pump technology
Ji Cainuan.With reference to previous work experience and project experiences, by calculating it is found that this item purpose water-break recharge requirement is
1317.34m3/h.The project is expected with the recharge pond 1 of 2 5m × 40m × 2m and returns water source heat pump units water-break in this programme
It is poured into underground.Point 4 subregions, each subregion are separated by by 1m high concretes partition panel 7 in one of recharge pond 1, each to separate
Plate 7 makes 4 subregions be interconnected away from the connecting pipe 8 for being embedded with 2 diameter 20cm at bottom of pond 20cm；Another recharge pond 1 without point
Area.106 pumped wells 5 are respectively arranged in each recharge pond 1, and the internal diameter of pumped well 5 is 0.5m, well depth 19m.
In order to which the water recharge capacity that pond 1 is bled back set by Verification Project can meet water source heat pump system water-break requirement, carry out
Corresponding Returning test, experiment recharge amount is respectively 300m3/ h and 500m3/h。
It is 300m that recharge amount is carried out in zoneless recharge pond 13The Returning test of/h, test period are winter in 2013
Heating period continues recharge 120 days.By result of the test it is found that 1 bottom of recharge pond occurs without seeping phenomenon, recharge can be proved
The water recharge capacity in pond 1 is more than 300m3/h。
On November 7th~9,2014 carries out using recharge amount as 500m the recharge pond 1 for having subregion3The Returning test of/h, experiment
Time continues 48.5h, total recharge water 22154m3, average recharge water per hour is 456.8m3.Pass through Returning test, recharge
Water the 1st subregion of having no way of overflows to other 3 subregions, and the recharge water overwhelming majority penetrates into underground by the 1st subregion, and tests knot
There was only the ponding that there is 8cm the 1st subregion bottom during beam, then estimate that the 1st subregion water recharge capacity in the recharge pond 1 is less than 500m3/ h,
The water recharge capacity for calculating entire recharge pond 1 like this will be less than 2000m3/h.But consider that 4 subregions in recharge pond 1 infiltrate at the same time
In the case of mutual influence, it is about 1000m to guard 1 whole water recharge capacity of estimation recharge pond3/h。
As the above analysis, two 1 water recharge capacities of recharge pond are about 2000m altogether3/ h can meet the project
1317.34m3The recharge requirement of/h water-breaks.
The system during energy exchange, do not lose substantially by water, and annual depletion rate is equal to year water withdrawal 159.4 ten thousand
m3(not considering to miss and return to raise loss).Consider that water source heat pump units whole year runs 121 days, run 10h daily, then water-break amount is
1317.34m3/h.Water source heat pump units system water is recycled in the pipeline of closing, substantially not with other media contacts,
Reduce pollution section, do not generate any pollutant, avoid and pollution is generated to groundwater environment.
Underground water after water source heat pump system use enters recharge pond 1 and then in recharge to underground reservoir by pipeline,
Recharge amount and water withdrawal are essentially identical, and recharge water-bearing layer group is located at same water-bearing layer group with extracting water-bearing layer group, exploit, recycle,
Recharge process is totally enclosed type.The operation of groundwater heat pump unit does not generate any waste water, waste residue, exhaust gas and flue dust, to week
Collarette border less pollution.
Embodiment 2
Embodiment 2 further defines filter well 3 and includes sequentially connected envelope from top to bottom on the basis of embodiment 1
Water pipe section 301 and infiltration pipeline section 302, water shutoff pipeline section 301 is waterproof, is mostly installed at the rock for locating below ground level and not needing into water
Soil layer section 303, function are that Reinforcing Shaft and isolation moisture penetrate into.Soakaway trench section is located at the water-bearing layer of 303 lower floor of ground interval
Filtrate 4 is filled in section 304, water shutoff pipeline section 301 and infiltration pipeline section 302, major function is to increase permeability, improves recharge effect
Fruit.As shown in Figure 3.
Particle aperture in the water-bearing layer that the grading of filtrate is contacted with 3 bottom of filter well is related, and grading is larger, and water inlet is logical
Freely, but sand block effect is poor；Otherwise grading is smaller, then sand block effect is good, but poor into outlet capacity.The porosity of filtrate skeleton is more than
Or the porosity equal to water-bearing layer.
In addition, according to the influence of the shape of filtrate 4 and ingredient to recharge effect, it is preferred that filtrate 4 should be with round, oval
Shape is preferred, and is forbidden to use water chestnut shape chip ballast.
Embodiment 3
The embodiment of the present invention 3 preferably defines that filtrate 4 includes the material of following weight grams on the basis of embodiment 2
Material：
53 grams of quartzite；
13.2 grams of dolomite；
8 grams of boulder and cobble.
Embodiment 4
The embodiment of the present invention 4 preferably defines that filtrate 4 includes the material of following weight grams on the basis of embodiment 2
Material：
76 grams of quartzite；
15.3 grams of dolomite；
11.7 grams of boulder and cobble.
Embodiment 5
The embodiment of the present invention 5 preferably defines that filtrate 4 includes the material of following weight grams on the basis of embodiment 2
Material：
65 grams of quartzite；
14 grams of dolomite；
10.6 grams of boulder and cobble.
Reference examples 1
Reference examples 1 of the present invention preferably define that filtrate 4 includes the material of following weight grams on the basis of embodiment 3
Material：
53 grams of quartzite；
13.2 grams of dolomite.
Reference examples 2
Reference examples 2 of the present invention preferably define that filtrate 4 includes the material of following weight grams on the basis of embodiment 3
Material：
53 grams of quartzite；
13.2 grams of dolomite；
8 grams of marl.
The permeability experimental verification of recharge water
Feeding：It is carried out as follows to according to the facts according to the filtrate 4 including mentioned component that embodiment 3-5 and reference examples 1 and 2 provide
It tests：Several identical sizes and the cylindrical tube of material are chosen, the filtrate 4 of same volume various composition is filled in pipe, in regulation
The interior permeability test for carrying out 100L recharge waters.In this experiment, a diameter of 10cm of cylindrical tube, setting time is 1 minute, experiment
Situation is as follows：
Result of the test is：
| Experimental group | Setting time (min) | Infiltration capacity (L) | Permeability (%) |
| Embodiment 3 | 1 | 85.4 | 85.4 |
| Embodiment 4 | 1 | 91.3 | 91.3 |
| Embodiment 5 | 1 | 99.1 | 99.1 |
| Reference examples 1 | 1 | 60.9 | 60.9 |
| Reference examples 2 | 1 | 50.2 | 50.2 |
By above-mentioned experiment, can clearly it find out, quartzite, the dolomite that the filtrate 4 that embodiment 3-5 is provided includes
With boulder and cobble recharge water osmotic efficiency can be significantly improved according to corresponding number composition.It can be seen by reference examples 1 or 2
Go out, filtrate 4 include 3 in arbitrarily replace, change or delete one of which in ingredient good osmotic efficiency is not achieved, into
And influence recharge effect.
In addition, the thickness of filled filtrate 4 should be increased as possible in sandy soil water-bearing layer.
By the analysis to underground reservoir ingredient, the grain size that filled filtrate 4 can be calculated according to respective formula is big
It is small.Preferably, when water-bearing layer includes any one in powder, fine sand, middle sand, coarse sand, grain size and the water-bearing layer grain size of filtrate 4
Correspondence be：D50/d50=6~8, wherein, D50 is that grain size accounts for total weight less than sand, the gravel of D50 values in filtrate
50%；D50 is that grain size accounts for the 50% of total weight less than sand, the gravel of d50 values in water-bearing layer.
When water-bearing layer includes gravelly soil, the correspondence of the grain size and water-bearing layer grain size of filtrate 4 is：D50/d20=6~8,
Wherein, d20 is that grain size accounts for the 20% of total weight less than sand, the gravel of d20 values in water-bearing layer.
In the present embodiment, by the analysis to underground reservoir ingredient, this area water-bearing layer is coarse sand water-bearing layer, under moisture content
Infiltration rate degree is fast, can fully make to ooze under the water of recharge water-bearing layer.According to calculation formula D50/d50=6~8, in formula：D50 is artificial
Grain size is that grain size is less than d50 values in water-bearing layer less than 50%, the d50 that sand, the gravel of D50 values account for total weight in backfill filtrate 4
Sand, gravel account for the 50% of total weight, can calculate the particle size of filled filtrate 4.Preferably, the filter in water shutoff pipeline section 301
4 gradings are expected for coarse grain diameter, and the diameter of the coarse grain diameter is more than 0.5mm and is less than or equal to 2mm, unobstructed to ensure to seep water.Seep water pipeline section
302 be to prevent from gushing sand and keep the stability in water-bearing layer, it is preferred that the filtrate grading in infiltration pipeline section 302 is less than water shutoff pipeline section
Filtrate grading in 301, in the present embodiment, 4 grading of filtrate in the pipeline section 302 that seeps water is fine grain, and the diameter of the fine grain is big
It is less than or equal to 0.25mm in 0.075mm.The filtrate 4 of water shutoff pipeline section 301 and infiltration pipeline section 302 junction is along water shutoff pipeline section 301
It is layered from thick to thin and even transition to the direction of infiltration pipeline section 302, until identical with the grading of filtrate 4 in infiltration pipeline section 302.
Filter well 3 can be constructed by two kinds of approach：One kind is mechanical execution formula, is constructed by Spiral digging machine, construction
The filtrate 4 filled is sent to tamping in filter well 3 simultaneously；Another kind is hand digging formula, using hand digging, when excavating
Building well wall, final Cheng Jinghou fill filtrate 4.Form of construction work is reasonably selected according to specific construction situation and construction requirement.
Embodiment 6
Embodiment 6 carries out auxiliary recharge on the basis of embodiment 1 or embodiment 2, for cooperation recharge pond 1, further limits
Determine pumped well 5 to include for the interior well casing 502 to draw water and the outer well tube 503 being socketed on outside interior well casing 502, in order to ensure to take out
Coolant-temperature gage, recharge water do not allow to return to interior well casing 502, it is preferred that anti-non-return is filled between interior well casing 502 and outer well tube 503
It pours water into the non-return water material 6 of interior well casing 502.In the present embodiment, for pumped well 5 when digging a well sampling, pumped well 5 corresponds to corresponding depth
Geology ingredient in the former geologic structure of degree is as non-return water material 6.Due to the reduction of level of ground water, top original water-bearing layer is basic
Drainage, earth formation is loose, has good water penetration.Recharge water between interior well casing 502 and outer well tube 503 by carrying out recharge
And the tube wall for passing through outer well tube 503 is permeated to stratum.As shown in Figure 1.
Compared with tradition feeds water pipe well permeable structure, pumped well 5 has intensity height, anti-extrusion indeformable feature.Especially
It is that drainage section 501 also has water penetration is strong, resistance is a small advantage, the stickness jelly in recharge water does not block drainage section 501
Permeable gap, achieve the effect that recharge is rapid unimpeded.
The increased probability of source water oxygen content is reduced to realize, ensures recharge effect to greatest extent.Further, it takes out
The outer wellhead brick work of well 5 has the closed well room 13 of package 5 well head of pumped well, and the well conduit that draws water runs through closed well room 13, closed
The enclosure wall of well room 13 uses brickwork construction, and bottom and top are formed using concreting.The top of closed well room 13 is provided with
Well lid 14, well head give over to maintenance personal and pass in and out closed well room 13, for the wellhead assembly that draws water being installed and being repaired use, such as
Shown in Fig. 4.
Embodiment 7
According to another aspect of the present invention, a kind of recharge method using above-mentioned recharge system is additionally provided, including
Main recharge：Recharge water is discharged to through pipe network concentration in recharge pond 1, and recharge water is oozed after precipitation by the inflow of water seepage hole 2
Well 3, and be seeped into the first water-bearing layer 10 of below ground after the filtering of filtrate 4.Pass through the circulation in each water-bearing layer, recharge
Water is back to the same water-bearing layer fetched water with pumped well under the effect of gravity, realizes that entire shallow layer geothermal energy utilized takes filling equal
Weighing apparatus.
Assist recharge：Recharge water is discharged by water resource heat pump between interior well casing 502 and outer well tube 503, through gravity to
Under be seeped into the water-bearing layer of below ground, and pass through the tube wall synchronization of outer well tube 503 and permeated to stratum.
Preferably, the construction as follows of recharge pond 1：
(1) addressing：Choose the construction area of the downstream for recharge system in heating region interflow subsurface drainage direction, the present embodiment
In, the construction area of heating region is 300,000 square metres.
(2) recharge pond is built：
A. the recharge pond 1 of a cuboid is excavated out straight down along surface soil layer 9 in construction area.
B. several water seepage holes 2 are outputed in the bottom in recharge pond 1.
C. filter well 3, port and below ground of the filter well 3 far from recharge pond 1 are excavated in the underface of each water seepage hole 2
Water-bearing layer connection.
(3) filtrate is filled：Filtrate 4 is filled into filter well 3.
During recharge, " shuiqiu " diameter centered on inverted well can incrementally increase, " shuiqiu " radius i.e. mistake
The length of aquaporin.With the increase of length, recharge amount can gradually reduce.If wellhead sealing, recharge pressure can be carried gradually
Height further results in the reduction of recharge amount.After " shuiqiu " is eliminated, recharge amount can be restored.In the prior art inverted well interval farther out,
Several independent " shuiqius " are formed, so as to substantially reduce the water recharge capacity of unit interval, influence recharge efficiency.In the present invention,
Several filter wells 3 are spaced smaller, are uniformly distributed in the lower section connection recharge water and underground reservoir in recharge pond 1, form one and go out
The very big integral type inverted well of mouth of a river diameter, so as to increase discharge section area；Simultaneously as filter well 3 in recharge pool technology
Quantity less than the quantity of filter well in the prior art, accordingly also reduce " shuiqiu " diameter, reduce the resistance of water penetration.Root
According to Darcy's law it is found that the present invention in the prior art unit interval compared with improving recharge flow.
Beneficial effects of the present invention are：
In the case where meeting water recharge capacity so that the various inverted wells height of existing vast number is intensive, reduces back
Well-digging quantity is filled, saves the land used input and warp for because well-digging occupies excessive land area, greatly reducing initial stage recharge system
Ji input, improves social benefit；Recharge amount and water withdrawal are essentially identical, effectively avoid the waste of water resource, while avoid because big
The newly-built water supply well of amount evacuates geology and causes geological disaster；Water cycle is carried out in closed conduct, and operational process does not generate dirt
Object is contaminated, avoids generating pollution to groundwater environment.
The present invention is not limited to above-mentioned preferred forms, anyone can show that other are various under the enlightenment of the present invention
The product of form, however, make any variation in its shape or structure, it is every that there is skill identical or similar to the present application
Art scheme, is within the scope of the present invention.
Claims (10)
1. a kind of recharge system using shallow layer geothermal energy, which is characterized in that the recharge system includes being embedded in surface soil layer
(9) recharge pond (1), recharge pond (1) bottom are provided with several water seepage holes (2), and the underface of the water seepage hole (2), which is excavated, to be had
Filter well (3), port of the filter well (3) far from the recharge pond (1) are connected with the water-bearing layer of below ground；The infiltration
Filtrate (4) is filled in well (3)；
Recharge pond (1) both sides are equipped with the pumped well (5) below embedment earth's surface, and the middle and lower part of the pumped well (5) is equipped with filter
Water section (501), the drainage section (501) connect at least one layer in the water-bearing layer.
2. the recharge system according to claim 1 using shallow layer geothermal energy, which is characterized in that filter well (3) packet
Include sequentially connected water shutoff pipeline section (301) from top to bottom and infiltration pipeline section (302)；The water shutoff pipeline section (301) positioned at ground with
Lower ground interval (303), the infiltration pipeline section (302) is positioned at the water-bearing interval (304) of ground interval (303) lower floor, institute
It states in water shutoff pipeline section (301) and the infiltration pipeline section (302) and fills the filtrate (4).
3. the recharge system according to claim 2 using shallow layer geothermal energy, which is characterized in that filtrate (4) skeleton
Porosity be greater than or equal to the water-bearing layer porosity.
4. the recharge system according to claim 3 using shallow layer geothermal energy, which is characterized in that the filtrate (4) includes
The material of following parts by weight：
53-76 parts of quartzite；
13.2-15.3 parts of dolomite；
8-11.7 parts of boulder and cobble.
5. the recharge system according to claim 4 using shallow layer geothermal energy, which is characterized in that the infiltration pipeline section
(302) filtrate (4) grading in is less than the grading of filtrate (4) described in the water shutoff pipeline section (301)；The water shutoff pipeline section
(301) filtrate (4) with described infiltration pipeline section (302) junction is along the water shutoff pipeline section (301) to the infiltration pipeline section
(302) direction is layered from thick to thin and even transition, until the grading with filtrate (4) described in the infiltration pipeline section (302)
It is identical；
Preferably,
When the water-bearing layer includes any one in powder, fine sand, middle sand, coarse sand, the grain size of the filtrate (4) contains with described
The correspondence of water layer grain size is：D50/d50=6~8, wherein, D50 is that grain size accounts for always less than sand, the gravel of D50 values in filtrate
The 50% of weight；D50 is that grain size accounts for the 50% of total weight less than sand, the gravel of d50 values in water-bearing layer；
When the water-bearing layer includes gravelly soil, the correspondence of the grain size and the water-bearing layer grain size of the filtrate (4) is：D50/
D20=6~8, wherein, d20 is that grain size accounts for the 20% of total weight less than sand, the gravel of d20 values in water-bearing layer.
6. according to any recharge systems using shallow layer geothermal energy of claim 1-5, which is characterized in that the water-bearing layer
From top to bottom include the first water-bearing layer (10), the second water-bearing layer (11) and third water-bearing layer (12), between the adjacent water-bearing layer
Pass through gravel layer interval；Port of the filter well (3) far from the recharge pond (1) is connected with first water-bearing layer (10).
7. the recharge system according to claim 1 using shallow layer geothermal energy, which is characterized in that recharge pond (1) bottom
Portion further includes：The recharge pond is divided into several only by several partition panels (7) vertically set, the partition panel (7)
Vertical recharge area is horizontally arranged with the connecting pipe (8) for connecting the adjacent recharge area on any partition panel (7).
8. the recharge system according to claim 1 using shallow layer geothermal energy, which is characterized in that pumped well (5) packet
It includes the interior well casing (502) for drawing water and is socketed on the external outer well tube (503) of the interior well casing (502), the interior well casing
(502) filled with the non-return water material (6) for preventing recharge water from entering the interior well casing (502) between the outer well tube (503).
9. the recharge system according to claim 1 using shallow layer geothermal energy, which is characterized in that the pumped well (5)
Outer wellhead brick work has the closed well room (13) for wrapping up pumped well (5) well head, and the pipeline of the pumped well (5) is through described close
Well room (13) is closed, well lid (14) is provided at the top of the closed well room (13).
10. a kind of recharge method using the recharge system described in any one of claim 1-9 using shallow layer geothermal energy,
It is characterized in that, the recharge method includes：
Main recharge：Recharge water is discharged to through pipe network in the recharge pond, and recharge water is after precipitation by described in water seepage hole inflow
Filter well, and be seeped into the water-bearing layer of below ground after the media filtration；
Assist recharge：Recharge water is discharged by water resource heat pump between the interior well casing and the outer well tube, downward through gravity
It is seeped into the water-bearing layer of below ground, and is permeated by the tube wall synchronization of the outer well tube to stratum；
Preferably, the recharge pond construction as follows：
(1) addressing：The downstream for choosing heating region interflow subsurface drainage direction is the construction area of recharge system；
(2) recharge pond is built：A. the recharge pond of a cuboid is excavated out straight down along surface soil layer in construction area；
B. several water seepage holes are outputed in the bottom in the recharge pond；
C. filter well, port and ground of the filter well far from the recharge pond are excavated in the underface of each water seepage hole
Following water-bearing layer connection；
(3) filtrate is filled：Filtrate is filled into the filter well.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113153223A (en) * | 2021-03-23 | 2021-07-23 | 河北省地矿局第三水文工程地质大队 | Sandstone-type water outlet geothermal well and recharge well construction method |
| CN113203213A (en) * | 2021-04-07 | 2021-08-03 | 太原理工大学 | Novel ground source heat pump system of artificial aquifer combined with shallow coaxial sleeve |
| CN113531929A (en) * | 2021-07-29 | 2021-10-22 | 青海省环境地质勘查局 | Geothermal single-well pressurizing and recharging device and method |
| CN113622877A (en) * | 2021-09-06 | 2021-11-09 | 中国地质调查局水文地质环境地质调查中心 | Underground multistage filtering-precipitating device for loose sandstone heat storage geothermal exploitation well |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101126558A (en) * | 2007-09-27 | 2008-02-20 | 成都建工建筑节能科技有限公司 | Groundwater recharge method |
| CN101153759A (en) * | 2007-08-04 | 2008-04-02 | 赵克飞 | Groundwater recharging method for water resource heat pump type central air-conditioner |
| JP2011191014A (en) * | 2010-03-16 | 2011-09-29 | Sumitomo Fudosan Kk | Underground heat use system |
| CN102518114A (en) * | 2012-01-08 | 2012-06-27 | 吉林大学 | Groundwater recharge and infiltration promoting method |
| CN203569555U (en) * | 2013-10-23 | 2014-04-30 | 天津大学 | Water plugging and seepage proofing recharge well |
| CN104846712A (en) * | 2015-03-12 | 2015-08-19 | 周太泽 | Hard road construction method by naturally recharging underground water |
| CN105042670A (en) * | 2015-06-24 | 2015-11-11 | 齐齐哈尔大学 | Groundwater recharge technology of heating system of water source heat pump |
| CN106247645A (en) * | 2016-08-30 | 2016-12-21 | 湖南中大经纬地热开发科技有限公司 | It is applied to the water resource heat pump terrestrial heat utilization system of constant temperature swimming pool |
| CN205919562U (en) * | 2016-07-26 | 2017-02-01 | 北京华誉能源技术股份有限公司 | Prevent flowing backward strenghthened type heavy -calibre recharging well structure |
| CN106812147A (en) * | 2017-01-25 | 2017-06-09 | 济南轨道交通集团有限公司 | A kind of sand-pebble layer protects spring inverted well construction method |
| CN208108527U (en) * | 2018-03-27 | 2018-11-16 | 遵化市华通热力有限公司 | A kind of recharge system using shallow layer geothermal energy |
-
2018
- 2018-03-27 CN CN201810260349.7A patent/CN108266912A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101153759A (en) * | 2007-08-04 | 2008-04-02 | 赵克飞 | Groundwater recharging method for water resource heat pump type central air-conditioner |
| CN101126558A (en) * | 2007-09-27 | 2008-02-20 | 成都建工建筑节能科技有限公司 | Groundwater recharge method |
| JP2011191014A (en) * | 2010-03-16 | 2011-09-29 | Sumitomo Fudosan Kk | Underground heat use system |
| CN102518114A (en) * | 2012-01-08 | 2012-06-27 | 吉林大学 | Groundwater recharge and infiltration promoting method |
| CN203569555U (en) * | 2013-10-23 | 2014-04-30 | 天津大学 | Water plugging and seepage proofing recharge well |
| CN104846712A (en) * | 2015-03-12 | 2015-08-19 | 周太泽 | Hard road construction method by naturally recharging underground water |
| CN105042670A (en) * | 2015-06-24 | 2015-11-11 | 齐齐哈尔大学 | Groundwater recharge technology of heating system of water source heat pump |
| CN205919562U (en) * | 2016-07-26 | 2017-02-01 | 北京华誉能源技术股份有限公司 | Prevent flowing backward strenghthened type heavy -calibre recharging well structure |
| CN106247645A (en) * | 2016-08-30 | 2016-12-21 | 湖南中大经纬地热开发科技有限公司 | It is applied to the water resource heat pump terrestrial heat utilization system of constant temperature swimming pool |
| CN106812147A (en) * | 2017-01-25 | 2017-06-09 | 济南轨道交通集团有限公司 | A kind of sand-pebble layer protects spring inverted well construction method |
| CN208108527U (en) * | 2018-03-27 | 2018-11-16 | 遵化市华通热力有限公司 | A kind of recharge system using shallow layer geothermal energy |
Non-Patent Citations (1)
| Title |
|---|
| 成都建筑工程集团总公司: "《工程建设施工工法汇编》", 人民交通出版社, pages: 139 - 703 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113153223A (en) * | 2021-03-23 | 2021-07-23 | 河北省地矿局第三水文工程地质大队 | Sandstone-type water outlet geothermal well and recharge well construction method |
| CN113203213A (en) * | 2021-04-07 | 2021-08-03 | 太原理工大学 | Novel ground source heat pump system of artificial aquifer combined with shallow coaxial sleeve |
| CN113531929A (en) * | 2021-07-29 | 2021-10-22 | 青海省环境地质勘查局 | Geothermal single-well pressurizing and recharging device and method |
| CN113622877A (en) * | 2021-09-06 | 2021-11-09 | 中国地质调查局水文地质环境地质调查中心 | Underground multistage filtering-precipitating device for loose sandstone heat storage geothermal exploitation well |
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