CN111851547A - Vacuum dewatering well capable of making water resource be reutilized and construction method thereof - Google Patents
Vacuum dewatering well capable of making water resource be reutilized and construction method thereof Download PDFInfo
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- CN111851547A CN111851547A CN202010569768.6A CN202010569768A CN111851547A CN 111851547 A CN111851547 A CN 111851547A CN 202010569768 A CN202010569768 A CN 202010569768A CN 111851547 A CN111851547 A CN 111851547A
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- well
- well pipe
- pipe
- hole
- water
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 57
- 238000010276 construction Methods 0.000 title claims abstract description 28
- 238000007789 sealing Methods 0.000 claims abstract description 24
- 238000005553 drilling Methods 0.000 claims abstract description 19
- 238000004062 sedimentation Methods 0.000 claims abstract description 18
- 239000011248 coating agent Substances 0.000 claims abstract description 16
- 238000000576 coating method Methods 0.000 claims abstract description 16
- 239000004576 sand Substances 0.000 claims abstract description 14
- 238000005086 pumping Methods 0.000 claims abstract description 13
- 238000005406 washing Methods 0.000 claims abstract description 7
- 239000002689 soil Substances 0.000 claims abstract description 6
- 239000010419 fine particle Substances 0.000 claims description 4
- 239000004677 Nylon Substances 0.000 claims description 3
- 229920001778 nylon Polymers 0.000 claims description 3
- 239000002002 slurry Substances 0.000 claims description 3
- 238000009435 building construction Methods 0.000 abstract description 3
- 238000009434 installation Methods 0.000 abstract 1
- 238000005259 measurement Methods 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 10
- 238000009412 basement excavation Methods 0.000 description 4
- 238000001556 precipitation Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000003673 groundwater Substances 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 239000004927 clay Substances 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005429 filling process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Images
Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/06—Restraining of underground water
- E02D19/10—Restraining of underground water by lowering level of ground water
-
- 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
- E03B3/06—Methods or installations for obtaining or collecting drinking water or tap water from underground
- E03B3/08—Obtaining and confining water by means of wells
- E03B3/12—Obtaining and confining water by means of wells by means of vertical pipe wells
-
- 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
- E03B3/06—Methods or installations for obtaining or collecting drinking water or tap water from underground
- E03B3/08—Obtaining and confining water by means of wells
- E03B3/15—Keeping wells in good condition, e.g. by cleaning, repairing, regenerating; Maintaining or enlarging the capacity of wells or water-bearing layers
-
- 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
- E03B3/06—Methods or installations for obtaining or collecting drinking water or tap water from underground
- E03B3/08—Obtaining and confining water by means of wells
- E03B3/16—Component parts of wells
- E03B3/18—Well filters
-
- 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
- E03B3/06—Methods or installations for obtaining or collecting drinking water or tap water from underground
- E03B3/08—Obtaining and confining water by means of wells
- E03B3/16—Component parts of wells
- E03B3/18—Well filters
- E03B3/24—Well filters formed of loose materials, e.g. gravel
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Public Health (AREA)
- Health & Medical Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The invention relates to the technical field of building construction, in particular to a vacuum dewatering well capable of secondarily utilizing water resources and a construction method thereof, wherein the vacuum dewatering well comprises a well site hole, a well pipe, a filter, a gravel layer, a sealing coating, a vacuum pump and a three-stage sedimentation tank; the well tubular is centrally placed within the well site bore; the filter is placed in the well pipe; the gravel layer is filled in a gap between the well pipe and the inner wall of the hole of the well position; the seal coating is used for sealing the top end openings of the well site hole and the well pipe; the construction method comprises the steps of well position measurement, drilling, well pipe lowering, gravel sand filling, sealing, well washing, pump installation and trial pumping and water drainage. The invention keeps the stability of the geology, avoids the spring soil phenomenon in the geology, ensures the maximization of the utilization of water resources and reduces the water consumption cost of a construction site.
Description
Technical Field
The invention relates to the technical field of building construction, in particular to a vacuum dewatering well capable of secondarily utilizing water resources and a construction method thereof.
Background
In the process of building construction of foundation pit engineering, according to the characteristics of an engineering enclosure structure and the geological and hydrological characteristics of a proposed site, the safety of the foundation pit engineering greatly depends on whether foundation pit precipitation succeeds or not, so that the reliability of precipitation design is very important, and therefore, according to the characteristics of foundation pit excavation and support, a precipitation well is arranged before foundation pit engineering piles, enclosure, reinforcement and earthwork excavation.
The underground tunnel drainage system which can be used by the dewatering well leads the water in the foundation pit into the dewatering wells at certain intervals along the ditch, flows into the sump through the underground tunnel communicated with the dewatering well, and is drained to a ground carwash pool or other water used for ground washing and construction sites through a special drainage well by a water pump.
In the practical construction and practical process of the existing dewatering well for foundation pit engineering, the dewatering duration is long, the water level descending range is large, the water content in the excavation depth range is rich, the permeability is strong, the spring soil phenomenon is easy to generate, and the adverse effect is generated on foundation pit excavation; most of the waste water is directly discharged into municipal pipelines after being filtered, so that the utilization of water resources is low, and the water consumption cost of a construction site is increased. In view of this, we propose a vacuum dewatering well which can make water resources reutilized and its construction method.
Disclosure of Invention
The invention aims to provide a vacuum dewatering well capable of secondarily utilizing water resources and a construction method thereof, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a vacuum dewatering well capable of making water resource be reutilized includes well position hole, well pipe, filter, gravel layer, sealing coating, vacuum pump and three-stage sedimentation tank;
the well tubular is centrally placed within the well site bore;
the filter is placed in the well pipe;
the gravel layer is filled in a gap between the well pipe and the inner wall of the hole of the well position;
the seal coating is used for sealing the top end openings of the well site hole and the well pipe;
and a water inlet of the vacuum pump is communicated with the well pipe through a pipeline, and a water outlet of the vacuum pump is communicated with the third-stage sedimentation tank through a pipeline.
Preferably, the filter is a strainer, the outer surface of the strainer is wrapped with a nylon gauze, and the outer diameter of the strainer is matched with the inner diameter of the well pipe.
A construction method for constructing the vacuum dewatering well, which is characterized by comprising the following steps:
Step 1: measuring well placement on the ground according to the well placement plane arrangement requirement;
step 2: drilling, namely performing drilling operation on the well position to form a well position hole;
and step 3: lowering the well pipe, and lowering the well pipe to the well position hole in the middle;
and 4, step 4: filling gravel sand, namely filling the gravel sand into a gap between the well pipe and the well site hole to form a gravel sand layer;
and 5: sealing, namely extending a pipeline for connection into the well pipe, fixing the pipeline at the top opening position of the well pipe, and sealing the well hole and the top opening of the well pipe by using a sealing coating;
step 6: washing the well, and pumping out slurry and fine particles in the well pipe through a pipeline;
and 7: installing a pump to try pumping, and installing a vacuum pump to try pumping on the well pipe;
and 8: and draining, namely pumping the water in the well pipe into a third-stage sedimentation tank by using the vacuum pump for sedimentation, and discharging the precipitated water from a water outlet of the third-stage sedimentation tank.
Preferably, in step 2, the drilling is performed by a drilling machine, and a drill bit of the drilling machine drills a hole in a state of being vertical to the ground.
Preferably, in step 5, the sealing coating is clay for sealing and tamping the top openings of the well bore and the well casing.
Compared with the prior art, the invention has the beneficial effects that: the vacuum dewatering well capable of making water resource reutilize and its construction method are characterized by that the interior of well position hole is vacuumed by means of sealing coating layer, the water of ground water-bearing layer is accumulated in the well pipe by means of pressure action, and between the well pipe and well position hole the cohesive soil and gravel are filled so as to retain the stability of geology and prevent spring soil phenomenon from appearing.
Drawings
FIG. 1 is a front view of the overall structure of embodiment 1 of the present invention;
FIG. 2 is a schematic view of the structure of a well bore and a well tubular in example 1 of the present invention;
fig. 3 is a construction flowchart of embodiment 2 of the present invention.
In the figure: 1. a well bore; 2. a well pipe; 3. a filter; 4. a gravel layer; 5. a seal coat; 6. a vacuum pump; 7. and a third-stage sedimentation tank.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
A vacuum dewatering well capable of reusing water resource is shown in figure 1 and figure 2, comprising a well site hole 1, a well pipe 2, a filter 3, a gravel layer 4, a seal coating 5, a vacuum pump 6 and a tertiary sedimentation tank 7; the well pipe 2 is placed in the well site hole 1 in the middle; the filter 3 is placed inside the well pipe 2; the gravel layer 4 is filled in a gap between the well pipe 2 and the inner wall of the well site hole 1; the sealing coating 5 is used for sealing the top end openings of the well site hole 1 and the well pipe 2; the water inlet of a vacuum pump 6 is communicated with a well pipe 2 through a pipeline, the water outlet of the vacuum pump 6 is communicated with a tertiary sedimentation tank 7 through a pipeline, vacuum is formed in a well hole 1 through a seal coating 5, water of a foundation aquifer is accumulated in the well pipe 2 through the pressure effect, the space between the well pipe 2 and the well hole 1 is filled with the gravel through the seal coating 5, the stability of the geology is kept, the phenomenon of spring soil is avoided, meanwhile, the water inlet of the vacuum pump 6 is connected through a pipeline, underground water accumulated in the well hole 1 is pumped out through the vacuum pump 6, the underground water is filtered and precipitated through the gravel layer 4, a filter 3 and the tertiary sedimentation tank 4 to obtain cleaner water which is used for washing tank water, road cleaning water and other construction water in the construction site, the used water flows into the ground again and is accumulated through the vacuum precipitation well again for recycling, and the maximization of water resource utilization is ensured, the water consumption cost of the construction site is reduced, and the popularization and the promotion are convenient.
In this embodiment, filter 3 is the strainer, and the surface parcel of strainer has the nylon gauze, and the external diameter of strainer and the internal diameter looks adaptation of well casing 2, and filter 3 is used for filtering the impurity in the groundwater, has with low costs, advantage that the filter effect is good.
Example 2
A construction method, the construction flow chart of which is shown in fig. 3, for constructing the vacuum dewatering well, the construction method comprises the following steps:
step 1: measuring well placement on the ground according to the well placement plane arrangement requirement;
step 2: drilling, namely performing drilling operation on a well position to form a well position hole 1, drilling a hole on the foundation and then ending the hole, and drilling 0.3-0.5m more to be used as a reserved space for water accumulation when the drilling construction reaches the designed depth;
and step 3: lowering the well pipe 2, lowering the well pipe 2 in the middle to the well site hole 1, measuring the hole depth of the well site hole 1 before lowering the pipe, and starting lowering the well pipe 2 after the hole depth meets the design requirement;
and 4, step 4: filling gravel sand, namely filling the gravel sand into a gap between the well pipe 2 and the well position hole 1 to form a gravel sand layer 4, measuring the depth inside and outside the well pipe 2 by using a measuring rope before filling the gravel sand, and measuring the accumulation height of gravel materials at any time in the gravel sand filling process until the gravel sand is accumulated to a preset position of the inner wall of the well position hole 1, wherein the gravel sand can not only ensure that one end of the well pipe 2 extending into the well position hole 1 is accumulated and fixed, but also can filter water permeating into the well pipe 2;
And 5: sealing, namely extending a pipeline for connection into the well pipe 2, fixing the pipeline at the top opening position of the well pipe 2, and sealing the well position hole 1 and the top opening of the well pipe 2 by using a sealing coating 5;
step 6: washing the well, pumping out the slurry and fine particles in the well pipe 2 through a pipeline to recover the pores of the underground aquifer of the foundation, pumping out a part of fine particles in the aquifer, expanding the pores of the aquifer and forming an artificial filter layer so as to filter the pumped water;
and 7: installing a pump to perform trial pumping, and installing a vacuum pump to perform trial pumping on the well pipe 2;
and 8: and (3) draining, namely pumping the water in the well pipe 2 into the third-stage sedimentation tank 6 by using the vacuum pump 6 for sedimentation, and discharging the precipitated water from a water outlet of the third-stage sedimentation tank 6 for water for a vehicle washing tank in a construction site, water for road cleaning and other construction water in the site, so that the water cost in the construction site is reduced, and the maximum utilization of water resources is realized.
In the embodiment, in the step 2, a drilling machine is used for drilling, and a drill bit of the drilling machine is vertical to the ground to drill a hole, so that the verticality of the well site hole 1 is ensured, the well site hole is matched with the well pipe 2, and water is taken from the ground bottom.
It should be noted that, in step 5, the seal coating 5 is made of clay for sealing and tamping the well bore 1 and the top opening of the well casing 2, so as to ensure that vacuum is formed in the well bore 1 and the pressure in the well casing 2 is reduced when water in the well casing 2 is pumped away, so that groundwater is accumulated in the well casing 2 under the action of pressure.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (5)
1. A vacuum dewatering well capable of making water resources be reused is characterized by comprising a well site hole (1), a well pipe (2), a filter (3), a gravel layer (4), a seal coating (5), a vacuum pump (6) and a three-stage sedimentation tank (7);
the well pipe (2) is placed centrally in the well bore (1);
the filter (3) is placed inside the well pipe (2);
the gravel layer (4) is filled in a gap between the well pipe (2) and the inner wall of the well site hole (1);
the sealing coating (5) is used for sealing the top end openings of the well site hole (1) and the well pipe (2);
and a water inlet of the vacuum pump (6) is communicated with the well pipe (2) through a pipeline, and a water outlet of the vacuum pump (6) is communicated with the third-stage sedimentation tank (7) through a pipeline.
2. The vacuum dewatering well capable of reusing water resource as claimed in claim 1, characterized in that: the filter (3) is a strainer, the outer surface of the strainer is wrapped with a nylon gauze, and the outer diameter of the strainer is matched with the inner diameter of the well pipe (2).
3. A construction method for constructing the vacuum dewatering well as claimed in any one of claims 1 to 2, wherein the construction method comprises the following steps:
step 1: measuring well placement on the ground according to the well placement plane arrangement requirement;
step 2: drilling, wherein a drilling operation is carried out on the well position to form a well position hole (1);
and step 3: lowering the well pipe (2), and centrally lowering the well pipe (2) into the well site hole (1);
and 4, step 4: filling gravel sand, and filling the gravel sand into a gap between the well pipe (2) and the well site hole (1) to form a gravel sand layer (4);
and 5: sealing, namely extending a pipeline for connection into the well pipe (2), fixing the pipeline at the top end opening position of the well pipe (2), and sealing the well hole (1) and the top end opening of the well pipe (2) by using a sealing coating (5);
step 6: washing the well, and pumping out the slurry and fine particles in the well pipe (2) through a pipeline;
And 7: installing a pump to perform trial pumping, and installing a vacuum pump to perform trial pumping on the well pipe (2);
and 8: and (3) draining, wherein the water in the well pipe (2) is pumped into a third-stage sedimentation tank (7) by using the vacuum pump (6) for sedimentation, and the settled water is discharged from a drainage outlet of the third-stage sedimentation tank (7).
4. The construction method according to claim 3, wherein: and 2, drilling by a drilling machine, wherein a drill bit of the drilling machine is vertical to the ground and drills into a hole.
5. The construction method according to claim 3, wherein: in the step 5, the sealing coating (5) is cohesive soil and is used for sealing and tamping the top openings of the well site hole (1) and the well pipe (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010569768.6A CN111851547A (en) | 2020-06-20 | 2020-06-20 | Vacuum dewatering well capable of making water resource be reutilized and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010569768.6A CN111851547A (en) | 2020-06-20 | 2020-06-20 | Vacuum dewatering well capable of making water resource be reutilized and construction method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN111851547A true CN111851547A (en) | 2020-10-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010569768.6A Pending CN111851547A (en) | 2020-06-20 | 2020-06-20 | Vacuum dewatering well capable of making water resource be reutilized and construction method thereof |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203701193U (en) * | 2014-01-08 | 2014-07-09 | 上海中锦建设集团股份有限公司 | Water circulating utilization system on construction site |
| CN204080837U (en) * | 2014-09-22 | 2015-01-07 | 中建八局第一建设有限公司 | A kind of foundation pit dewatering recycle device |
| CN107489159A (en) * | 2017-08-03 | 2017-12-19 | 中国电建集团铁路建设有限公司 | Deep ＆ thick silt matter Soft Soil Layer vacuum tube well dewatering construction structure and its construction |
| CN110777828A (en) * | 2019-10-29 | 2020-02-11 | 中国三冶集团有限公司 | A strainer well for foundation ditch well casing precipitation construction |
-
2020
- 2020-06-20 CN CN202010569768.6A patent/CN111851547A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203701193U (en) * | 2014-01-08 | 2014-07-09 | 上海中锦建设集团股份有限公司 | Water circulating utilization system on construction site |
| CN204080837U (en) * | 2014-09-22 | 2015-01-07 | 中建八局第一建设有限公司 | A kind of foundation pit dewatering recycle device |
| CN107489159A (en) * | 2017-08-03 | 2017-12-19 | 中国电建集团铁路建设有限公司 | Deep ＆ thick silt matter Soft Soil Layer vacuum tube well dewatering construction structure and its construction |
| CN110777828A (en) * | 2019-10-29 | 2020-02-11 | 中国三冶集团有限公司 | A strainer well for foundation ditch well casing precipitation construction |
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Application publication date: 20201030 |