CN211773801U - A strainer well for foundation ditch well casing precipitation construction - Google Patents
A strainer well for foundation ditch well casing precipitation construction Download PDFInfo
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- CN211773801U CN211773801U CN201921828698.0U CN201921828698U CN211773801U CN 211773801 U CN211773801 U CN 211773801U CN 201921828698 U CN201921828698 U CN 201921828698U CN 211773801 U CN211773801 U CN 211773801U
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Abstract
The utility model relates to a construction technical field just discloses a strainer well for foundation ditch well casing precipitation construction, including the ground, the inside excavation of ground has the foundation ditch, and the foundation ditch both sides are equipped with the precipitation well, the inside of precipitation well is equipped with the strainer well, and packs between precipitation well and the strainer well and have the backfill layer, and the inside of precipitation well is equipped with the water absorption pipeline, the top of water absorption pipeline and the inside intercommunication of the water pumping device on fixed mounting and the ground. This a filter tube well for foundation ditch well casing precipitation construction, through the setting that adopts layered structure to the filter tube well, when utilizing water absorption pipeline and pumping device to extract the groundwater in the precipitation well, utilize automatic butterfly valve can form a semi-enclosed structure in the inside of water storage pipeline, can not arouse when extracting groundwater that the sedimentary grit of filter tube takes place to surge the in-process, the grit in the groundwater can not appear and is inhaled and cause the problem of impact damage to high-speed rotatory impeller.
Description
Technical Field
The utility model relates to a construction technical field specifically is a water filter pipe well for foundation ditch well casing precipitation construction.
Background
The utility tunnel is an underground comprehensive pipeline which integrates urban underground electric power, communication, gas, heat supply, water supply and drainage and the like, is internally provided with a special access hole, a lifting hole and a detection system, can realize unified planning, design, management and construction of urban underground pipelines, and is an important infrastructure for guaranteeing urban operation.
Because utility tunnel builds in the underground in city and the degree of depth is darker, consequently, for the normal excavation construction of guaranteeing the utility tunnel foundation ditch, need adopt artificial mode to reduce the water level of groundwater before the foundation ditch excavation for the earthwork of foundation ditch excavation remains comparatively dry state throughout, can normally go on in order to ensure the construction of foundation ditch.
The pipe well dewatering method is used as a main measure for manually reducing the underground water level with high efficiency and high discharge capacity, the underground water is reduced by pumping and discharging the underground water in the filter well pipe through the pumping mechanism, and the method can effectively reduce the water level of the underground water by 5-10 meters and can greatly meet the foundation construction of a comprehensive pipe gallery.
However, the filter well pipe in the existing well pipe dewatering process has a single structure, when the underground water in the filter well pipe is taken out by using a water pumping mechanism, sand and stones deposited at the bottom of the filter well pipe are easily stirred by water flow and sucked by the filter well pipe due to the small inner space of the filter well pipe and the large water pumping suction force, so that impact damage is caused to an impeller rotating at a high speed in a water pump, and the service life of the water pump is seriously influenced.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
The utility model provides a strainer well for construction of foundation ditch well casing precipitation, it is high to possess stability, the grit has been reduced to the impact of high-speed rotatory impeller, water pump life's advantage has been prolonged, it is single to have solved the filtration well casing tubular construction in the present well casing precipitation, when utilizing the mechanism of drawing water to take out groundwater wherein, because the inner space of filtering the well casing is less and draw water suction great, it is very easily aroused that the grit of deposit in its bottom is given up and is inhaled by rivers to cause the problem of impact damage to the high-speed rotatory impeller in the suction pump.
(II) technical scheme
The utility model provides a following technical scheme: the utility model provides a strainer well for foundation ditch well casing precipitation construction, includes the ground, the inside excavation of ground has the foundation ditch, and the foundation ditch both sides are equipped with the precipitation well, the inside of precipitation well is equipped with the filter tube well, and packs between precipitation well and the strainer well and have the backfill layer, the inside of precipitation well is equipped with the water absorption pipeline, the top of water absorption pipeline and the inside intercommunication of the pumping device on fixed mounting and the ground.
Preferably, the depth of the foundation pit is at least 1 m higher than that of the dewatering well, and the bottom of the water suction pipeline is at least 0.5 m lower than the bottom end of the foundation pit.
Preferably, the strainer well includes the filtering conduit, the surface and the backfill layer contact of filtering conduit, and filtering conduit's inside is equipped with and deposits the water piping, the bottom fixed mounting who deposits the water piping has automatic butterfly valve.
Preferably, the middle part of the outer surface of the filtering pipeline is uniformly provided with filtering holes, and the upper part and the lower part of the filtering pipeline are respectively provided with a sealing section which accounts for 10-15% of the total length of the filtering pipeline.
Preferably, a group of annular air holes are formed in the top of the outer surface of the water storage pipeline, the height of each air hole is higher than the top end of each filtering hole in the filtering pipeline, and the bottom of the water suction pipeline is higher than the bottom end of each filtering hole in the filtering pipeline.
A strainer well for foundation pit well casing precipitation construction mainly comprises the following construction processes:
s1, positioning the precipitation wells, namely measuring and positioning the positions of the precipitation wells according to the requirements of the construction scheme, wherein the error of the position measurement and placement of each group of precipitation well holes is not more than 300 mm;
s2, constructing the dewatering well, comprising: digging a slurry pool → digging a pit → installing a mouth protecting pipe → installing and drilling a drilling machine;
s3, installing a filter water pipe well, comprising: the lower water filtering pipeline → the filling filtering material → the well washing;
and S4, installing a water pump and starting the precipitation operation.
(III) advantageous effects
The utility model discloses possess following beneficial effect:
1. this a filter tube well for foundation ditch well casing precipitation construction, through the setting that adopts layered structure to the filter tube well, when utilizing water absorption pipeline and pumping device to extract the groundwater in the precipitation well, utilize automatic butterfly valve can form a semi-enclosed structure in the inside of water storage pipeline, compare with current pump tube well, can not arouse filter tube sedimentary grit when extracting groundwater to take place to surge the in-process, the grit in the groundwater can not appear is inhaled and causes the problem of impact damage to high-speed rotatory impeller.
2. This a strainer well for construction of foundation ditch well casing precipitation, to the setting of filter tube upper portion and lower part seal segment, can form the grit in an effectual closing layer comes the separation earth's surface in filter tube's inside, can form one section deposit pipe in filter tube's bottom simultaneously, so that will permeate the grit deposit in the filter tube inside along with groundwater, and cooperate the setting of automatic butterfly valve, further guarantee that sedimentary grit can not take place to flow along with rivers when extracting groundwater.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the structure construction and installation of the utility model;
FIG. 3 is an enlarged schematic view of the structure at A of FIG. 1 according to the present invention;
fig. 4 is an enlarged schematic view of the structure at B of fig. 1 according to the present invention.
In the figure: 1. a foundation; 2. a foundation pit; 3. dewatering wells; 4. a filtered water pipe well; 41. a filtration pipeline; 42. a water storage pipeline; 43. an automatic butterfly valve; 5. a backfill layer; 6. a water suction pipe; 7. a water pumping device.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-4, a strainer well for dewatering construction of a foundation pit well pipe comprises a foundation 1, a foundation pit 2 is excavated inside the foundation 1, dewatering wells 3 are arranged on two sides of the foundation pit 2, a strainer well 4 is arranged inside the dewatering well 3, a backfill layer 5 is filled between the dewatering well 3 and the strainer well 4, a water suction pipeline 6 is arranged inside the dewatering well 3, and the top end of the water suction pipeline 6 is communicated with the inside of a water pumping device 7 fixedly arranged on the foundation 1.
In the technical scheme, the depth of the foundation pit 2 is at least 1 m higher than that of the dewatering well 3, and the bottom of the water suction pipeline 6 is at least 0.5 m lower than the bottom end of the foundation pit 2.
Wherein, to the mutual limited of the degree of depth between foundation ditch 2, precipitation well 3 and the pipeline 6 that absorbs water, ensure that groundwater can effectual infiltration and gather precipitation well 3 under the effect of gravity in, utilize the pipeline 6 that absorbs water in time to extract the suction with groundwater simultaneously to the groundwater level line in the precipitation well 3 has been ensured to be less than the water flat line of foundation ditch 2 bottom all the time, and then has avoided the groundwater infiltration to enter into the problem in foundation ditch 2.
Among this technical scheme, strainer well 4 includes filter tube 41, and filter tube 41's surface and the contact of backfill layer 5, and filter tube 41's inside is equipped with water storage pipeline 42, and water storage pipeline 42's bottom fixed mounting has automatic butterfly valve 43.
Wherein, to the setting that the filter tube well 4 adopted the layered structure, when utilizing pipeline 6 and pumping device 7 to draw the groundwater in the precipitation well 3 that absorb water, utilize automatic butterfly valve 43 can form a semi-enclosed structure in the inside of water storage pipeline 42, make it can not cause the grit that filter tube 41 sedimentary to take place to swash when drawing groundwater, and then the grit in the groundwater can not appear and is inhaled and cause the problem of impact damage to the rotatory impeller of high speed.
In the technical scheme, the middle part of the outer surface of the filtering pipeline 41 is uniformly provided with filtering holes, and the upper part and the lower part of the filtering pipeline 41 are both provided with sealing sections which account for 10% -15% of the total length of the filtering pipeline.
Wherein, for the arrangement of the upper and lower sealing sections of the filtering pipe 41, an effective sealing layer can be formed inside the filtering pipe 41 to block sand in the ground surface, and a section of sedimentation pipe can be formed at the bottom of the filtering pipe 41 to sediment sand which permeates into the filtering pipe 41 along with groundwater, and the arrangement of the automatic butterfly valve 43 is matched to prevent the sand from flowing along with water flow when the groundwater is pumped.
In the technical scheme, a group of annular air holes are formed in the top of the outer surface of the water storage pipeline 42, the height of each air hole is higher than the top end of each filtering hole in the filtering pipeline 41, and the bottom of the water suction pipeline 6 is higher than the bottom end of each filtering hole in the filtering pipeline 41.
Wherein, to setting up bleeder vent and its height on the water storage pipeline 42, can guarantee that the inside and outside atmospheric pressure between filtering pipe 41 and the water storage pipeline 42 is the same, and after accomplishing the operation of drawing groundwater, because of being the same between filtering pipe 41 and the water storage pipeline 42, so make automatic butterfly valve 43 can automatic opening under the effect of gravity to groundwater that permeates in filtering pipe 41 can enter into the water storage pipeline 42.
A strainer well for foundation pit well casing precipitation construction mainly comprises the following construction processes:
s1, positioning the dewatering wells 3, measuring and positioning the positions of the dewatering wells 3 according to the requirements of the construction scheme, wherein the error of the position measurement and placement of each group of dewatering wells 3 is not more than 300 mm;
s2, constructing the dewatering well 3, comprising: digging a slurry pool → digging a pit → installing a mouth protecting pipe → installing and drilling a drilling machine;
s3, installing the strainer well 4, comprising: the lower water filtering pipeline → the filling filtering material → the well washing;
and S4, installing a water pump and starting the precipitation operation.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. A filter tube well for foundation ditch well casing precipitation construction, includes ground (1), its characterized in that: the inside excavation of ground (1) has foundation ditch (2), and foundation ditch (2) both sides are equipped with precipitation well (3), the inside of precipitation well (3) is equipped with drainage pipe well (4), and packs between precipitation well (3) and drainage pipe well (4) and backfill layer (5), the inside of precipitation well (3) is equipped with water absorption pipeline (6), the top of water absorption pipeline (6) and the inside intercommunication of water pumping device (7) on fixed mounting and the ground (1).
2. A water filter pipe well for use in foundation pit well pipe precipitation construction according to claim 1, wherein: the depth of the foundation pit (2) is at least 1 m higher than that of the dewatering well (3), and the bottom of the water suction pipeline (6) is at least 0.5 m lower than the bottom end of the foundation pit (2).
3. A water filter pipe well for use in foundation pit well pipe precipitation construction according to claim 1, wherein: the water filtering pipe well (4) comprises a filtering pipe (41), the outer surface of the filtering pipe (41) is in contact with the backfill layer (5), a water storage pipe (42) is arranged inside the filtering pipe (41), and an automatic butterfly valve (43) is fixedly installed at the bottom end of the water storage pipe (42).
4. A water filter pipe well for use in foundation pit well pipe precipitation construction according to claim 3, wherein: the middle part of the outer surface of the filtering pipeline (41) is uniformly provided with filtering holes, and the upper part and the lower part of the filtering pipeline (41) are respectively provided with a sealing section which accounts for 10-15% of the total length of the filtering pipeline.
5. A water filter pipe well for use in foundation pit well pipe precipitation construction according to claim 3, wherein: the top of the outer surface of the water storage pipeline (42) is provided with a group of annular air holes, the height of each air hole is higher than the top end of each filtering hole on the filtering pipeline (41), and the bottom of the water suction pipeline (6) is higher than the bottom end of each filtering hole on the filtering pipeline (41).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921828698.0U CN211773801U (en) | 2019-10-29 | 2019-10-29 | A strainer well for foundation ditch well casing precipitation construction |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921828698.0U CN211773801U (en) | 2019-10-29 | 2019-10-29 | A strainer well for foundation ditch well casing precipitation construction |
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| CN211773801U true CN211773801U (en) | 2020-10-27 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN114482103A (en) * | 2021-12-04 | 2022-05-13 | 上海渊水环境科技有限公司 | Downpipe well under all-stratum condition and construction method thereof |
-
2019
- 2019-10-29 CN CN201921828698.0U patent/CN211773801U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN114482103A (en) * | 2021-12-04 | 2022-05-13 | 上海渊水环境科技有限公司 | Downpipe well under all-stratum condition and construction method thereof |
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