CN101691840B - Water level observation well and construction method thereof - Google Patents
Water level observation well and construction method thereof Download PDFInfo
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- CN101691840B CN101691840B CN2009103073959A CN200910307395A CN101691840B CN 101691840 B CN101691840 B CN 101691840B CN 2009103073959 A CN2009103073959 A CN 2009103073959A CN 200910307395 A CN200910307395 A CN 200910307395A CN 101691840 B CN101691840 B CN 101691840B
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Abstract
The invention discloses a water level observation well. The well pipe of the well is a PVC pipe, wherein the pipe sections of the PVC pipe are connected by threaded sleeves; the water filtration part of the well pipe is provided with a water outlet; the outer wall of the PVC pipe is fixedly connected with a coarsely-textured fabric layer which is fully adhered with a cement mortar layer; and the water outlet runs through the coarsely-textured fabric layer, the cement mortar layer and the PVC pipe. The invention also discloses a construction method of the water level observation pipe. The method for manufacturing the pipe sections of the well pipe of the well comprises: a, connecting the coarsely-textured fabric layer with the outer walls of the PVC pipe sections and the threaded sleeves respectively; b, fully adhering the cement mortar layer on the coarsely-textured fabric layer to form the pipe sections of the well pipe; and c, before the final setting of the cement mortar layer, drilling the water outlet on the pipe section, at the water filtration position, of the well pipe, wherein the water outlet runs through the coarsely-textured fabric layer, the cement mortar layer and the PVC pipe. The water level observation well has the advantage of accurate observation result and the construction method has the advantage of low construction cost.
Description
Technical field
The present invention relates to the engineering monitoring field, particularly a kind of water level observation well and job practices thereof.
Background technology
Often need carry out water table measure in the engineering monitoring of building and hydraulic engineering, existing water level observation well steel pipe commonly used or concrete gravel chimney filter.
Using steel pipe or concrete gravel chimney filter makes the construction technology of water level observation well and may further comprise the steps: the measuring well location, bury underground protect a mouthful pipe, rigging up, drilling and forming hole, clear hole change slurry, down well casing, fill out the gravel material, fill out clay ball, fill out cohesive soil in the well casing periphery, well head sealing, well-flushing, peace pump try to take out, draining, backfill or shut-in well.The purpose of filling out the gravel material in the above step is to form good penetrating passage in the chimney filter section of well casing, and the purpose of filling out clay ball and filling out cohesive soil in the well casing periphery is at filter pipe with top shutoff infiltration to avoid each soil layer waterpower to gang up.Filling out clay ball and filling out cohesive soil two steps in the well casing periphery is the embedding successful keys of water-level observation well casing.
More than use steel pipe or concrete gravel chimney filter making water level observation well and mainly have the high deficiency of cost, especially use the steel pipe manufacturing water level observation well.Using P VC manages made well casing can save cost greatly.
The pvc pipe material is that a kind of cost of production is low, intensity is high, corrosion resistant good plastic products.The pvc pipe material has good mechanical property, and possesses fabulous corrosion resistance, and is in light weight in the use; Easy for installation, easy realization is tightly connected, not easy fracture; Need not safeguard; Process good pvc pipe road, be application life in general 50 years, be widely used in aspects such as building, blowdown, waste water, ventilating duct and agricultural irrigation.
Have in the part engineering and adopt the instance of pvc pipe as the water level observation well well casing; But Using P VC pipe is that its outer wall is smooth, is easy to seepage and each aquifer of causing well casing to pass is ganged up as the maximum shortcoming of water level observation well; Make the pvc pipe water level observation well for mixing water level; But not the water level value in chimney filter section aquifer causes the observed result distortion.
Summary of the invention
The present invention provides a kind of observed result accurate for solving the technical problem that exists in the known technology, water level observation well that construction cost is low and job practices thereof.
The technical scheme that the present invention takes for the technical problem that exists in the solution known technology is: a kind of water level observation well; The well casing of this well adopts pvc pipe; Connect through threaded sleeve between each pipeline section of said pvc pipe, the drainage position of said well casing is provided with weep hole, is connected with coarse bed of cloth on the outer wall of said pvc pipe; Completely speckle with cement sand bed on the said coarse bed of cloth, said weep hole runs through said coarse bed of cloth and said cement sand bed and said pvc pipe.
The pipeline section nominal outside diameter of said pvc pipe is 50mm～200mm, and thickness is 2.0mm～3.9mm.
Another technical scheme that the present invention takes for the technical problem that exists in the solution known technology is: a kind of job practices of water level observation well; May further comprise the steps: the measuring well location, bury underground protect a mouthful pipe, rigging up, drilling and forming hole, clear hole change slurry, down well casing, fill out the gravel material, fill out clay ball, fill out cohesive soil in the well casing periphery, well head sealing, well-flushing, peace pump try to take out, draining, backfill or shut-in well; Said well casing adopts pvc pipe; Connect through threaded sleeve between the pipeline section of said pvc pipe, the tube manufacture method of said well casing is:
A, on the outer wall of said pvc pipe section and threaded sleeve affixed coarse bed of cloth respectively;
B, on said coarse bed of cloth completely sticking cement sand bed, form the pipeline section of said well casing;
C, before said cement sand bed final set, on the well casing pipeline section at corresponding drainage position, get out the water hole, said weep hole runs through said coarse bed of cloth and said cement sand bed and said pvc pipe.
Said step a is: after smearing cementing agent on the outer wall of said pvc pipe section and said threaded sleeve, paste 3～5 layers of coarse cloth earlier, form said coarse bed of cloth.
Said step b is: the outer wall that will be connected with said pvc pipe section and the said threaded sleeve of coarse bed of cloth rotates in cement mortar and dips in slurry, forms said cement sand bed.
Advantage and good effect that the present invention has are: through being employed in the affixed coarse bed of cloth of pvc pipe and threaded sleeve outer wall; Completely be stained with the well casing of cement sand bed on the coarse bed of cloth; Efficiently solve the pvc pipe outer wall smooth, be easy to seepage and problem that each aquifer of causing well casing to pass is ganged up; Make that this water level observation well is the water level value in chimney filter section aquifer, observed result is accurate; Utilized the advantage of pvc pipe material preferably, as good mechanical property such as withstand voltage properties, fabulous corrosion resistance, in light weight, easy for installation, be prone to realize being tightly connected, not easy fracture, need not safeguard, the life-span is long etc.; With respect to steel pipe and concrete gravel chimney filter, this water level observation well is cheap, when satisfying engineering purpose, can arrange by multiple spot.
Description of drawings
Fig. 1 is a water table aquifer water level observation well sketch map of the present invention;
Fig. 2 is an artesian aquifer water level observation well sketch map of the present invention;
Fig. 3 is A-A (the not having the boring section) sectional view of Fig. 1 and Fig. 2;
Fig. 4 is B-B (boring section) sectional view of Fig. 1 and Fig. 2.
Among the figure: 1, pvc pipe, 2, bed of cloth, 3, cement sand bed, 4, weep hole.
The specific embodiment
For further understanding summary of the invention of the present invention, characteristics and effect, the following examples of giving an example now, and conjunction with figs. specifies as follows:
See also Fig. 1～Fig. 4, a kind of water level observation well of the present invention, the well casing of this well adopts pvc pipe 1; Connect through threaded sleeve between each pipeline section of above-mentioned pvc pipe 1; Be connected with coarse bed of cloth 2 on the outer wall of the pvc pipe 1 that is connected to form by above-mentioned pvc pipe section and threaded sleeve, completely speckle with cement sand bed 4 on the above-mentioned coarse bed of cloth 2, corresponding drainage position; Get out water hole 4, weep hole 4 runs through coarse bed of cloth 2 and cement sand bed 3 and pvc pipe 1.
The pipeline section nominal outside diameter of above-mentioned pvc pipe can be 50mm～200mm, and thickness can be 2.0mm～3.9mm.
The job practices of above-mentioned water level observation well; Following steps: the measuring well location, bury underground protect a mouthful pipe, rigging up, drilling and forming hole, clear hole change slurry, down well casing, fill out the gravel material, fill out clay ball, fill out cohesive soil in the well casing periphery, well head sealing, well-flushing, peace pump try to take out, draining, backfill or shut-in well; Well casing adopts pvc pipe 1; Connect through threaded sleeve between the pipeline section of pvc pipe 1, for preventing the smooth infiltration of pvc pipe 1 outer wall, the present invention adopts following method to make the pipeline section of well casing:
A, on the outer wall of said pvc pipe section and threaded sleeve affixed coarse bed of cloth respectively;
B, on said coarse bed of cloth completely sticking cement sand bed, form the pipeline section of said well casing;
C, before said cement sand bed final set, on the well casing pipeline section at corresponding drainage position, get out the water hole, said weep hole runs through said coarse bed of cloth and said cement sand bed and said pvc pipe.
On the outer wall of said pvc pipe section and threaded sleeve respectively the method for affixed coarse bed of cloth have: paste 3～5 layers of coarse cloth after smearing cementing agent on the outer wall at above-mentioned pipe fitting; Also can on the outer wall of above-mentioned pipe fitting, tie up the coarse cloth of solid multilayer with steel wire.
Among the above-mentioned steps b on coarse bed of cloth the method for completely sticking cement sand bed have: the outer wall that will be connected with pvc pipe section and the threaded sleeve of coarse bed of cloth rotates in cement mortar and dips in slurry; Also can be on above-mentioned coarse bed of cloth the brushing cement mortar.
Embodiment 1:
Certain high-rise residential building base pit engineering excavation area 1.23 ten thousand m
2, foundation ditch digs dark 15.130m.The foundation ditch periphery adopts diaphragm wall, dark 34 meters of ground-connecting-wall, 1.0 meters of wall thicknesses.Foundation ditch periphery water table aquifer water level observation well, the structure of this water level observation well such as Fig. 1, Fig. 3 and shown in Figure 4.
Stratum in excavation of foundation pit depth bounds vertical distribution from top to bottom is:
1. artificial earth fill and miscellaneous fill, thickness
2.3m
2. silty clay, thickness 5.1m;
3. mud, thickness
11.4m
4. silty clay, thickness
5.7m
5. silt, thickness
9.80m
6. flour sand, thickness
8.10m
7. silty clay, thickness
14.5m
8. silt, thickness
16.30m
Above-mentioned water table aquifer water level observation well adopts pvc pipe, and the pipeline section nominal outside diameter of pvc pipe is 50mm, and thickness is 2.0mm, total pipe range 9m, and the first pipeline section 6m, the second pipeline section 3m adopts threaded sleeve to connect between two pipeline sections of pvc pipe.After the outer wall of pvc pipe section and threaded sleeve is smeared cementing agent, paste 3 layers of cotton spinning cloth, the outer wall of above-mentioned pipe fitting rotate in cement mortar dip in slurry afterwards, the boring at the drainage position when treating that cement mortar is solidified soon on the well casing outer wall, formation well tube filter section.
The job practices that adopts pvc pipe to make water level observation well may further comprise the steps: the measuring well location, bury underground protect a mouthful pipe, rigging up, drilling and forming hole, clear hole change slurry, down well casing, fill out the gravel material, fill out clay ball, fill out cohesive soil in the well casing periphery, well head sealing, well-flushing, peace pump try to take out, draining, backfill or shut-in well.
After adopting the embedding success of water table aquifer water level observation well of pvc pipe making, application 1 01 type fluviograph carries out water-level observation, and waterpower does not take place the well casing outer wall gangs up, and test result meets the requirements.
Embodiment 2:
Certain section long 260m of subway tunnel base pit engineering, wide 20.5m, foundation ditch dig dark 15.420m.The foundation ditch periphery adopts diaphragm wall, dark 35 meters of ground-connecting-wall, 1.2 meters of wall thicknesses.Foundation ditch periphery water table aquifer and artesian aquifer water level observation well see also Fig. 1～Fig. 4.
Stratum in excavation of foundation pit depth bounds vertical distribution from top to bottom is:
1. artificial earth fill and miscellaneous fill, thickness
3.4m
2. mud, thickness
12.1m
3. silty clay, thickness 3.6m;
4. silt, thickness 2.5m;
5. flour sand, thickness
10.0m
6. silty clay, thickness
12.5m
7. silt, thickness
10.3m
8. flour sand, thickness
5.4m
The water table aquifer water level observation well adopts pvc pipe, and the pipeline section nominal outside diameter of pvc pipe is 90mm, and thickness is 3.0mm, total pipe range 10m, and the first pipeline section 6m, the second pipeline section 4m adopts threaded sleeve to connect between two pipeline sections of pvc pipe.
The artesian aquifer water level observation well adopts pvc pipe, and the pipeline section nominal outside diameter of pvc pipe is 90mm, and thickness is 3.0mm, total pipe range 24m, and totally 4 pipeline sections, every pipeline section 6m adopts threaded sleeve to connect between 4 pipeline sections of pvc pipe.
After the outer wall of pvc pipe section and threaded sleeve is smeared cementing agent, paste 4 layers of cotton spinning cloth, the outer wall of above-mentioned pipe fitting rotate in cement mortar dip in slurry afterwards, the boring at the drainage position when treating that cement mortar is solidified soon on the outer wall, formation well tube filter section.
The job practices that adopts pvc pipe to make water level observation well may further comprise the steps: the measuring well location, bury underground protect a mouthful pipe, rigging up, drilling and forming hole, clear hole change slurry, down well casing, fill out the gravel material, fill out clay ball, fill out cohesive soil in the well casing periphery, well head sealing, well-flushing, peace pump try to take out, draining, backfill or shut-in well.
After adopting the water table aquifer water level observation well and the embedding success of artesian aquifer water level observation well of pvc pipe making, application 1 01 type fluviograph carries out water-level observation, and waterpower does not take place the well casing outer wall gangs up, and test result meets the requirements.
Embodiment 3:
The long 463m of certain subway station pit engineering, wide 19.35m, foundation ditch dig dark 18.590m.The foundation ditch periphery adopts diaphragm wall, dark 38 meters of ground-connecting-wall, 1.2 meters of wall thicknesses.Foundation ditch periphery water table aquifer and artesian aquifer water level observation well see also Fig. 1～Fig. 4.
Stratum in excavation of foundation pit depth bounds vertical distribution from top to bottom is:
1. artificial earth fill and miscellaneous fill, thickness 4.50m;
2. mud, thickness 13.00m;
3. silty clay, thickness 4.0m;
4. silt, thickness 2.80m;
5. flour sand, thickness 13.10m;
6. silty clay, thickness 21.5m.
The water table aquifer water level observation well adopts pvc pipe, and the pipeline section nominal outside diameter of pvc pipe is 200mm, and thickness is 3.9mm, total pipe range 10m, and the first pipeline section 6m, the second pipeline section 4m adopts threaded sleeve to connect between two pipeline sections of pvc pipe.
The artesian aquifer water level observation well adopts pvc pipe, and the pipeline section nominal outside diameter of pvc pipe is 200mm, and thickness is 3.9mm, total pipe range 30m, and totally 5 pipeline sections, every pipeline section 6m adopts threaded sleeve to connect between the pipeline section of pvc pipe.
After the outer wall of pvc pipe section and threaded sleeve is smeared cementing agent, paste 4 layers of cotton spinning cloth, the outer wall of above-mentioned pipe fitting rotate in cement mortar dip in slurry afterwards, the boring at the drainage position when treating that cement mortar is solidified soon on the outer wall of above-mentioned pipe fitting, formation well tube filter section.
The job practices that adopts pvc pipe to make water level observation well may further comprise the steps: the measuring well location, bury underground protect a mouthful pipe, rigging up, drilling and forming hole, clear hole change slurry, down well casing, fill out the gravel material, fill out clay ball, fill out cohesive soil in the well casing periphery, well head sealing, well-flushing, peace pump try to take out, draining, backfill or shut-in well.
After adopting the water table aquifer water level observation well and the embedding success of artesian aquifer water level observation well of pvc pipe making, application 1 01 type fluviograph carries out water-level observation, and waterpower does not take place the well casing outer wall gangs up, and test result meets the requirements.
Basic principle of the present invention is: adopt pvc pipe to make the water-level observation well casing, the connected mode between the pipeline section of pvc pipe adopts threaded sleeve, the anti-seepage processing method of outer sticky cloth material of pvc pipe and brushing cement mortar.This well casing preparation method utilized advantage such as good mechanical property such as the withstand voltage properties of pvc pipe material, fabulous corrosion resistance, in light weight, easy for installation, be prone to connect and sealing, not easy fracture, need not safeguard, the life-span is long etc.The anti-seepage processing method of sticky cloth material and brushing cement mortar has overcome the smooth shortcoming that causes waterpower to gang up easily of tube wall that exists in the application outside pvc pipe.With respect to steel pipe and concrete gravel chimney filter, the pvc pipe water level observation well is cheap, when satisfying engineering purpose, can arrange by multiple spot.
Although combine accompanying drawing that the preferred embodiments of the present invention are described above; But the present invention is not limited to the above-mentioned specific embodiment, and the above-mentioned specific embodiment only is schematically, is not restrictive; Those of ordinary skill in the art is under enlightenment of the present invention; Not breaking away under the scope situation that aim of the present invention and claim protect, can also make a lot of forms, these all belong within protection scope of the present invention.
Claims (5)
1. water level observation well; The well casing of this well adopts pvc pipe, connects through threaded sleeve between each pipeline section of said pvc pipe, and the drainage position of said well casing is provided with weep hole; It is characterized in that; Be connected with coarse bed of cloth on the outer wall of said pvc pipe, completely speckle with cement sand bed on the said coarse bed of cloth, said weep hole runs through said coarse bed of cloth and said cement sand bed and said pvc pipe.
2. water level observation well according to claim 1 is characterized in that, the pipeline section nominal outside diameter of said pvc pipe is 50mm～200mm, and thickness is 2.0mm～3.9mm.
3. the job practices of a water level observation well; May further comprise the steps: the measuring well location, bury underground protect a mouthful pipe, rigging up, drilling and forming hole, clear hole change slurry, down well casing, fill out the gravel material, fill out clay ball, fill out cohesive soil in the well casing periphery, well head sealing, well-flushing, peace pump try to take out, draining, backfill or shut-in well; Said well casing adopts pvc pipe; Connect through threaded sleeve between the pipeline section of said pvc pipe, it is characterized in that the tube manufacture method of said well casing is:
A, on the outer wall of said pvc pipe section and threaded sleeve affixed coarse bed of cloth respectively;
B, on said coarse bed of cloth completely sticking cement sand bed, form the pipeline section of said well casing;
C, before said cement sand bed final set, on the well casing pipeline section at corresponding drainage position, get out the water hole, said weep hole runs through said coarse bed of cloth and said cement sand bed and said pvc pipe.
4. the job practices of water level observation well according to claim 3 is characterized in that, said step a is: after smearing cementing agent on the outer wall of said pvc pipe section and said threaded sleeve, paste 3～5 layers of coarse cloth earlier, form said coarse bed of cloth.
5. the job practices of water level observation well according to claim 3; It is characterized in that; Said step b is: the said pvc pipe section that is connected with coarse bed of cloth respectively and said threaded sleeve are rotated in cement mortar dip in slurry, on said coarse bed of cloth, to form said cement sand bed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009103073959A CN101691840B (en) | 2009-09-21 | 2009-09-21 | Water level observation well and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009103073959A CN101691840B (en) | 2009-09-21 | 2009-09-21 | Water level observation well and construction method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101691840A CN101691840A (en) | 2010-04-07 |
| CN101691840B true CN101691840B (en) | 2012-07-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009103073959A Expired - Fee Related CN101691840B (en) | 2009-09-21 | 2009-09-21 | Water level observation well and construction method thereof |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102808583B (en) * | 2012-07-23 | 2015-01-07 | 中国神华能源股份有限公司 | Hydrological exploration drilling well pipe, coal mining pipe descending method and hydrological exploration method |
| CN103147467A (en) * | 2013-03-13 | 2013-06-12 | 中国建筑第八工程局有限公司 | Leak detection device for underground diaphragm wall and construction method of leak detection device |
| CN106596176B (en) * | 2016-12-23 | 2020-05-26 | 上海勘察设计研究院(集团)有限公司 | Water and soil integrated sampling method |
| CN106894821B (en) * | 2017-03-03 | 2019-05-10 | 中铁建大桥工程局集团第五工程有限公司 | It is a kind of originate, the monitoring method of received well and jacking construction |
| CN109138841A (en) * | 2018-08-24 | 2019-01-04 | 沈阳建筑大学 | A kind of groundwater monitoring well construction device and its application method with reinforcing well casing and suspension type auxiliary frame |
| CN109098259A (en) * | 2018-09-27 | 2018-12-28 | 江苏省江都水利工程管理处 | A kind of water level logging system of simple to install easy to maintain |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1151783A (en) * | 1994-07-06 | 1997-06-11 | Lwt仪器设备公司 | Logging or measurement while tripping |
| CN2464934Y (en) * | 2000-11-17 | 2001-12-12 | 核工业第六研究所 | Filter for underground extracting liquid |
| CN2634115Y (en) * | 2003-09-01 | 2004-08-18 | 中油勘探监理涿州有限责任公司 | Remote sensing type well deep monitor |
| CN2668852Y (en) * | 2003-12-24 | 2005-01-05 | 中国石化胜利油田有限公司井下作业公司 | Mechanical well-depth positioner |
-
2009
- 2009-09-21 CN CN2009103073959A patent/CN101691840B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1151783A (en) * | 1994-07-06 | 1997-06-11 | Lwt仪器设备公司 | Logging or measurement while tripping |
| CN2464934Y (en) * | 2000-11-17 | 2001-12-12 | 核工业第六研究所 | Filter for underground extracting liquid |
| CN2634115Y (en) * | 2003-09-01 | 2004-08-18 | 中油勘探监理涿州有限责任公司 | Remote sensing type well deep monitor |
| CN2668852Y (en) * | 2003-12-24 | 2005-01-05 | 中国石化胜利油田有限公司井下作业公司 | Mechanical well-depth positioner |
Non-Patent Citations (1)
| Title |
|---|
| 杜鸿坚.聚氯乙烯(PVC-U)管材在给水排水工程中的应用.《广东建材》.2005,(第11期), * |
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| CN101691840A (en) | 2010-04-07 |
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