CN114753447A - Residual water recharging well construction and recharging method based on shallow geothermal utilization - Google Patents
Residual water recharging well construction and recharging method based on shallow geothermal utilization Download PDFInfo
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- CN114753447A CN114753447A CN202210454664.XA CN202210454664A CN114753447A CN 114753447 A CN114753447 A CN 114753447A CN 202210454664 A CN202210454664 A CN 202210454664A CN 114753447 A CN114753447 A CN 114753447A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 103
- 238000010276 construction Methods 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 title claims abstract description 16
- 239000000463 material Substances 0.000 claims abstract description 21
- 238000005553 drilling Methods 0.000 claims abstract description 15
- 238000007599 discharging Methods 0.000 claims abstract description 4
- 230000035699 permeability Effects 0.000 claims description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 9
- 239000004927 clay Substances 0.000 claims description 6
- 239000004576 sand Substances 0.000 claims description 6
- 238000001914 filtration Methods 0.000 claims description 4
- 239000002349 well water Substances 0.000 claims description 4
- 235000020681 well water Nutrition 0.000 claims description 4
- 239000006004 Quartz sand Substances 0.000 claims description 3
- 239000002893 slag Substances 0.000 claims description 3
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 2
- 229910052748 manganese Inorganic materials 0.000 claims description 2
- 239000011572 manganese Substances 0.000 claims description 2
- 238000004080 punching Methods 0.000 claims description 2
- 239000011148 porous material Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 6
- 239000003673 groundwater Substances 0.000 description 4
- 238000005086 pumping Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000001556 precipitation Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 239000010419 fine particle Substances 0.000 description 2
- 239000002352 surface water Substances 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000006911 nucleation Effects 0.000 description 1
- 238000010899 nucleation Methods 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B3/00—Methods or installations for obtaining or collecting drinking water or tap water
- E03B3/32—Methods or installations for obtaining or collecting drinking water or tap water with artificial enrichment, e.g. by adding water from a pond or a river
- E03B3/34—Methods or installations for obtaining or collecting drinking water or tap water with artificial enrichment, e.g. by adding water from a pond or a river of underground water
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D36/00—Filter circuits or combinations of filters with other separating devices
- B01D36/04—Combinations of filters with settling tanks
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B3/00—Methods or installations for obtaining or collecting drinking water or tap water
- E03B3/32—Methods or installations for obtaining or collecting drinking water or tap water with artificial enrichment, e.g. by adding water from a pond or a river
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Abstract
The invention discloses a residual water recharging well construction and recharging method based on shallow geothermal utilization, and aims to solve the technical problem that the recharging effect of a single well of a recharging well is not ideal at present. The construction method comprises the following steps: step 1: determining a well forming position and an estimated well depth; step 2: determining the construction depth and the diameter-variable depth of the recharge well; and step 3: drilling a well with a first hole diameter; and 4, step 4: drilling a well with a second hole diameter; and 5: sequentially placing the filter materials into a settling tube and a filter tube, filling the filter materials to form a filter layer, and filling the water stopping materials to form a water stopping layer; the recharging method comprises the following steps: step 1: discharging the residual water into a recharging well by using a water pump; step 2: controlling the water pump amount of the water pump, and ensuring that delta H is greater than delta S; and 3, step 3: and starting a pressurizing pump to pressurize and recharge when the water surface of the recharge well rises to the ground height and is not stable. The invention can effectively improve the recharge quantity of the single well, reduce the number of the recharge wells, save space resources and reduce construction cost.
Description
Technical Field
The invention relates to the technical field of geothermal recharging well water return, in particular to a residual water recharging well construction and recharging method based on shallow geothermal utilization.
Background
Geothermal resources are highly regarded as a clean and renewable resource at home and abroad. Shallow geothermal energy is one of the geothermal resources and is the most common geothermal resource that is most easily developed and utilized. In the development and utilization of shallow geothermal energy, the underground water source heat pump system is in an energy recycling mode, namely water is not taken when heat is taken, and water is only used as a circulating medium for geothermal heat energy transfer. In the running process of the underground water source heat pump system, after heat extraction is finished, the same-layer manual recharge of the extracted underground hot water is needed, otherwise, a series of problems are caused. If the groundwater is continuously exploited without recharging for a long time, the groundwater level in the region is inevitably lowered continuously, so that not only can geothermal resources be wasted, but also geothermal resources can be exhausted, and environmental problems such as ground settlement, ground cracks or ground surface collapse are caused. And if the residual geothermal water after heat extraction is directly discharged into the surface water body, the surface temperature is increased, the temperature field balance of the original environment is broken, the problem of thermal pollution is caused, and the quality of the surface water is changed.
In plain areas (Zhengzhou for example), shallow aquifers mainly use fine-particle silt, silty clay and fine sand, and therefore the recharge effect is not ideal. According to the experience of development and utilization of shallow geothermal heat in Zhengzhou regions, a recharging well constructed in a fine particle aquifer is generally required to be provided according to the proportion of 1 pumping 2 times, even 1 pumping 3 times. Moreover, with the operation of shallow geothermal exploitation and utilization engineering, the recharge capability is in a descending trend year by year due to the reason that attachments such as inorganic salts and the like block a water path and the like in a well wall water filter pipe, and the phenomenon of '1 pumping 4 times' often appears. At present, groundwater recharge is one of the main factors restricting shallow geothermal energy development and utilization, and a technical method capable of effectively increasing the recharge quantity of a single well is urgently needed to solve the recharge problem in shallow geothermal energy development and utilization.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art that is known to a person skilled in the art.
Disclosure of Invention
The invention aims to provide a residual water recharging well construction and recharging method based on shallow geothermal utilization, and the method is used for solving the technical problem that the recharging effect of a single well of the existing recharging well is not ideal.
In order to solve the technical problems, the invention adopts the following technical scheme:
a construction method of a residual water recharging well is designed, and comprises the following steps:
step 1: determining a well forming position and an estimated well depth according to local geological hydrological data;
step 2: according to the geophysical logging result and the clear stratum structure compiled by drilling coring, determining the construction depth of the recharge well, wherein the position of the shortest connecting depth of the stratum water permeability is determined as the variable-diameter depth of the first well diameter and the second well diameter of the recharge well;
and step 3: drilling a well by using a reaming bit corresponding to the first hole diameter, wherein the drilling depth is consistent with the well depth;
and 4, step 4: drilling a well by using a reaming bit corresponding to the second hole diameter, drilling the well to a diameter-variable position, and punching the whole hole to remove slag;
and 5: and sequentially placing a settling pipe and a strainer pipe which are matched with the first hole diameter, filling filter materials into a gap between the strainer pipe and the well wall to the position 1/10 which is far away from the ground and occupies the well depth to form a corresponding water filtering layer, and filling water stopping materials into the residual gap to the ground to form a corresponding water stopping layer.
Further, in the step 2, the construction depth of the recharge well exceeds the corresponding depth of the stratum with strong water permeability by 1-2 meters.
Further, in the step 2, the first aperture diameter is 60% -75% of the second aperture diameter, and the two apertures have the same axis.
Further, in the step 5, the length of the settling tube is 1-2 m, the strainer extends from the end of the settling tube to the position corresponding to the water stop layer, and the diameters of the settling tube and the strainer are 40-60% of the first aperture.
Further, the filter material comprises at least one of quartz sand and manganese sand.
Further, the water stopping material is at least one of a clay ball and concrete.
A residual water recharging well recharging method comprises the following steps:
step 1: discharging residual water into the recharging well obtained in the claim 1 by using a water pump, forming a water head height higher than the ground underground water level in the well to cause a pressure difference delta H between the dynamic water level in the well and the ground underground water level, enabling the well water to enter a filter material space through a filter pipe, and causing a pressure difference delta S between the water head pressure and the ground underground water level in the filter material space;
step 2: controlling the water pump amount of the water pump until the recharge water level does not rise any more and keeps stable, and ensuring that delta H is greater than delta S;
and step 3: and starting a pressurizing pump to pressurize and recharge when the water surface of the recharge well rises to the ground height and is not stable.
Further, in the step 3, the pressurization pressure is not more than 0.05 Mpa.
Compared with the prior art, the invention has the main beneficial technical effects that:
1. the invention can effectively increase the water seepage area between the filter material layer and the stratum of the recharge well, greatly exert the recharge capability of each stratum, effectively improve the recharge amount of a single well under the same pressure, further reduce the number of the recharge wells, save space resources and reduce the construction cost
2. The invention can reduce the recharging pressure difference between the water level of the dynamic head and the ground water level under the same pressure, and can obviously enhance the natural recharging effect of the recharging well.
Drawings
Fig. 1 is a schematic diagram of a first hole diameter completion of a recharge well in step 3 of example 1.
Fig. 2 is a schematic diagram of the second hole diameter of the recharge well in step 4 of example 1.
FIG. 3 is a schematic view of well placement in step 5 of example 1.
Fig. 4 is a schematic diagram of recharging well filling in step 5 of example 1.
Fig. 5 is a schematic view of the structure of a recharge well in example 2.
In the above figures, 1 is a stopping water layer, 2 is a water filter pipe, 3 is a water filter layer, 4 is a settling pipe, 50 is a silt layer, 51 is fine silt, 52 is silt, 53 is fine medium sand, 54 is fine clay, 60 is an underground water level, and 61 is a dynamic water level.
Detailed Description
The following examples are intended to illustrate the present invention in detail and should not be construed as limiting the scope of the present invention in any way.
Reference herein to "first," "second," etc., is used to distinguish between similar items and not to limit the particular order or sequence.
The materials and members in the following examples are all conventional commercially available products unless otherwise specified.
Example 1: a construction method of a residual water recharge well based on shallow geothermal utilization, which is a recharge test well No. K3 located at a certain position of Zheng State City, is shown in figures 1 to 4, and comprises the following steps:
step 1: and determining a well formation position at the position of 100m in the southwest of the intersection and the predicted well depth of 120m according to the geological hydrological data of the construction position and the stratum structure and the underground water flow direction.
Step 2: according to the geophysical logging result and drilling coring record, the stratum with the permeability of 0-72.1m such as silt, silty clay, silty fine sand and calcareous nucleation layer is found to be relatively poor, and the stratum with the permeability of 72.1-120 m is a fine medium sand layer with good permeability. Determining the construction depth of the recharge well to be 120m, the shortest junction depth of the stratum water permeability to be 72.1m, determining the variable diameter depth of the first aperture and the second aperture of the recharge well to be 72.5m by considering the unevenness of the earth surface, and reserving a certain margin to ensure that the variable diameter position is in the shortest junction depth of the stratum water permeability to be strong or weak or the stratum with strong water permeability.
And step 3: the first aperture is designed to be 600mm, and a 600mm reamer bit is adopted to drill the well with the drilling depth of 120 m.
And 4, step 4: the second aperture is 800mm, a hole is drilled by adopting a hole expanding drill bit with the diameter of 800mm, the drilling depth reaches 72.5m, and the whole well is punched to remove slag.
And 5: sequentially placing a precipitation tube and a strainer with the aperture of 300mm, setting the depth of 10-120m, the length of the precipitation tube is 1m, the bottom of the precipitation tube is sealed by an iron plate, and the outside of the strainer is wrapped by a layer of 100-mesh nylon net. Filling high-quality quartz sand filter materials with the diameter of 1-3mm into gaps among the settling tube, the water filtering tube and the well wall to form a water filtering layer, and filling high-quality clay balls with the particle size of 20-30mm in a semi-dry state into the residual gaps to the height of the ground to form a water stopping layer.
Compared with the conventional structure recharging well with the well depth of 120m and the well diameter of 600mm implemented in the project: according to the result of the water pumping test, the water yield of the recharging well with the traditional structure is 60.8m when the depth is reduced by 3.78m3The water yield of the recharging well designed by the invention is 61.3 m3And h, the water yield of a single well is basically consistent. According to the recharging test result, recharging is carried out under the condition of 6.02m water head height, and the recharging amount of the recharging well with the traditional structure is 27.5m3The recharging amount of the recharging well designed by the invention is 55.3m3H is the ratio of the total weight of the catalyst to the total weight of the catalyst. The single well recharge quantity of the recharge well designed by the invention is 2.01 times of that of the recharge well with the traditional structure, so that the single well recharge quantity of the recharge well can be obviously improved, and the recharge effect is ensured.
Example 2: a residual water recharging well recharging method based on shallow geothermal utilization is disclosed, and referring to fig. 5, the method comprises the following steps:
step 1: and (3) discharging residual water into a recharging well by using a water pump, forming a water head height higher than the ground underground water level in the well, causing a pressure difference delta H between the dynamic water level in the well and the ground underground water level, enabling well water to enter a filter material space through a water filter pipe, and causing a pressure difference delta S between the water head pressure and the ground underground water level in the filter material space.
Step 2: and controlling the water pump volume of the water pump until the recharge water level does not rise any more and keeps stable, and ensuring that the delta H is greater than the delta S.
And step 3: the water surface of the recharge well is not stable when rising to the ground height, the pressure pump is started for pressurizing and recharging at the moment, and the pressure of the pressure pump is not more than 0.05MPa, so that the influence on the surrounding geological structure is prevented.
While the invention has been described in detail with reference to the drawings and examples, it will be understood by those skilled in the art that various changes in the form and details of the embodiments may be made therein without departing from the spirit of the invention, and equivalents of related structures, materials, and method steps may be substituted thereby forming multiple embodiments all of which are within the scope of the invention and not described in detail herein.
Claims (8)
1. A construction method of a residual water recharging well is characterized by comprising the following steps:
step 1: determining a well forming position and an estimated well depth according to local geological hydrological data;
step 2: according to the geophysical logging result and the clear stratum structure compiled by drilling coring, determining the construction depth of the recharge well, wherein the position of the shortest connecting depth of the stratum water permeability is determined as the variable-diameter depth of the first well diameter and the second well diameter of the recharge well;
and 3, step 3: drilling a well by adopting a hole expanding drill bit corresponding to the first hole diameter, wherein the drilling depth is consistent with the well depth;
and 4, step 4: drilling a well by adopting a hole expanding drill bit corresponding to the second hole diameter, and punching a whole hole and removing slag when the drilling depth reaches a reducing position;
and 5: and sequentially placing a settling pipe and a strainer pipe which are matched with the first hole diameter, filling filter materials into a gap between the strainer pipe and the well wall to the position 1/10 which is far away from the ground and occupies the well depth to form a corresponding water filtering layer, and filling water stopping materials into the residual gap to the ground to form a corresponding water stopping layer.
2. The method for constructing a residual water recharging well, according to claim 1, characterized in that in the step 2, the recharging well construction depth exceeds the corresponding depth of the stratum with strong water permeability by 1-2 meters.
3. The residual water recharging well construction method according to claim 1, wherein in the step 2, the first aperture diameter is 60% -75% of the second aperture diameter, and the two apertures are coaxial.
4. The residual water recharging well construction method according to claim 1, wherein in the step 5, the length of the settling pipe is 1-2 meters, the strainer extends from the end of the settling pipe to a position corresponding to the water stop layer, and the diameters of the settling pipe and the strainer are 40% -60% of the first pore diameter.
5. The residual water recharging well construction method according to claim 1, wherein the filter material comprises at least one of quartz sand and manganese sand.
6. The residual water recharging well construction method according to claim 1, wherein the water stopping material is at least one of a clay ball and concrete.
7. A residual water recharging well recharging method is characterized by comprising the following steps:
step 1: discharging residual water into the recharging well obtained in the claim 1 by using a water pump, forming a water head height higher than the ground underground water level in the well to cause a pressure difference delta H between the working water level in the well and the ground underground water level, enabling the well water to enter a filter material space through a water filter pipe, and causing a pressure difference delta S between the water head pressure and the ground underground water level in the filter material space;
and 2, step: controlling the water pump water quantity until the recharge water level does not rise any more and keeps stable, and ensuring that delta H is greater than delta S;
and 3, step 3: and starting a pressurizing pump to pressurize and recharge when the water surface of the recharge well rises to the ground height and is not stable.
8. The method for recharging the residual water recharging well of claim 7, wherein in the step 3, the pressurizing pressure is not more than 0.05 Mpa.
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Citations (9)
| 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 |
| CN104234132A (en) * | 2014-07-29 | 2014-12-24 | 济南大学 | Semicircular dual-type self-infiltrating reverse-filtering recharge well mouth device |
| CN106123383A (en) * | 2016-08-17 | 2016-11-16 | 北京市水文地质工程地质大队 | One thermal recovery fill system and method intelligently |
| US20180283735A1 (en) * | 2017-03-30 | 2018-10-04 | China University Of Petroleum-Beijing | Hydrothermal geothermal development method of multilateral well closed circulation |
| CN110735468A (en) * | 2019-11-21 | 2020-01-31 | 山东省水利科学研究院 | underground water cross-flow supply recharging system combined with irrigation channels and irrigation wells |
| CN210688797U (en) * | 2019-10-31 | 2020-06-05 | 中核坤华能源发展有限公司 | Geothermal recharge system |
| CN111945818A (en) * | 2019-05-17 | 2020-11-17 | 江苏省地质工程勘察院 | Embedded recharging well and recharging system suitable for sponge city |
| CN112012274A (en) * | 2019-05-31 | 2020-12-01 | 山东省地质矿产勘查开发局八〇一水文地质工程地质大队 | Automatic pressure stabilizing system for recharging |
| KR102267006B1 (en) * | 2021-03-09 | 2021-06-21 | (주)수산 | Construction method of riverbed filtration and artifical recharge wellhole |
-
2022
- 2022-04-24 CN CN202210454664.XA patent/CN114753447B/en active Active
Patent Citations (9)
| 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 |
| CN104234132A (en) * | 2014-07-29 | 2014-12-24 | 济南大学 | Semicircular dual-type self-infiltrating reverse-filtering recharge well mouth device |
| CN106123383A (en) * | 2016-08-17 | 2016-11-16 | 北京市水文地质工程地质大队 | One thermal recovery fill system and method intelligently |
| US20180283735A1 (en) * | 2017-03-30 | 2018-10-04 | China University Of Petroleum-Beijing | Hydrothermal geothermal development method of multilateral well closed circulation |
| CN111945818A (en) * | 2019-05-17 | 2020-11-17 | 江苏省地质工程勘察院 | Embedded recharging well and recharging system suitable for sponge city |
| CN112012274A (en) * | 2019-05-31 | 2020-12-01 | 山东省地质矿产勘查开发局八〇一水文地质工程地质大队 | Automatic pressure stabilizing system for recharging |
| CN210688797U (en) * | 2019-10-31 | 2020-06-05 | 中核坤华能源发展有限公司 | Geothermal recharge system |
| CN110735468A (en) * | 2019-11-21 | 2020-01-31 | 山东省水利科学研究院 | underground water cross-flow supply recharging system combined with irrigation channels and irrigation wells |
| KR102267006B1 (en) * | 2021-03-09 | 2021-06-21 | (주)수산 | Construction method of riverbed filtration and artifical recharge wellhole |
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