CN110359474B - Method for sealing precipitation construction of precipitation wellhead - Google Patents
Method for sealing precipitation construction of precipitation wellhead Download PDFInfo
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- CN110359474B CN110359474B CN201910703286.2A CN201910703286A CN110359474B CN 110359474 B CN110359474 B CN 110359474B CN 201910703286 A CN201910703286 A CN 201910703286A CN 110359474 B CN110359474 B CN 110359474B
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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
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Hydrology & Water Resources (AREA)
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- Mining & Mineral Resources (AREA)
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- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Pressure Vessels And Lids Thereof (AREA)
- Sewage (AREA)
Abstract
The invention discloses a method for sealing precipitation construction of a precipitation wellhead, which comprises the following steps of firstly obtaining a precipitation wellhead protective cover, installing the protective cover at the precipitation wellhead, and then operating corresponding components of the precipitation wellhead protective cover: placing and fixing the cover plate fixing support in the precipitation well; then covering the circular cover plate on the precipitation wellhead, and fixing the circular cover plate on the precipitation wellhead by using a connecting screw; the limiting block is rotated to open the sealing plate, and the submersible pump is placed through the equipment placing hole to perform dewatering operation in the dewatering well; and after the dewatering operation is finished, the submersible pump is taken out, the handle is held to pull the closing plate, the closing plate is rotated and moved upwards to seal the equipment placing hole, then the limiting block is rotated to limit the closing plate, and the sealing cover of the dewatering well is finished. According to the invention, the well cover is separately provided with the equipment placing hole for placing the submersible pump and extending the water pumping pipe, so that the dewatering operation can be completed while the dewatering well mouth is sealed, and the construction safety is improved.
Description
Technical Field
The invention relates to a precipitation construction method of a precipitation well, in particular to a method for sealing precipitation construction of a precipitation wellhead.
Background
The precipitation engineering refers to the application of the principles of hydrology and geology, through precipitation design and precipitation construction, surface water is discharged, the water level of underground water such as stagnant water, diving water, confined water, bedrock water, karst water and the like in the stratum is reduced, the precipitation depth and time requirements of construction engineering are met, and the engineering environment is not harmfully influenced. In order to ensure the construction safety, a protective cover is usually arranged at a precipitation wellhead, so that safety accidents caused by accidental falling of construction personnel are avoided. However, in the operation of precipitation, the protective cover needs to be opened and the water pumping equipment such as a submersible pump needs to be placed, so that potential safety hazards are formed, and safety accidents are easy to happen.
Disclosure of Invention
Aiming at the defects of the prior art, the technical problems to be solved by the invention are as follows: how to provide a construction method which can cover a precipitation wellhead and can also carry out precipitation operation.
In order to solve the technical problems, the invention adopts the following technical scheme:
a method for sealing precipitation construction of a precipitation wellhead comprises the following steps: the method comprises the following steps:
(1) obtaining a precipitation wellhead protective cover, wherein the precipitation wellhead protective cover comprises a circular cover plate, the center of the circular cover plate is provided with a device placing hole which is concentric with the circular cover plate, the device placing hole is provided with a sealing plate which is consistent with the device placing hole in shape and is used for sealing the device placing hole, the upper surface of the sealing plate and the position close to the edge of the sealing plate are provided with at least three limiting buckles, the center of the sealing plate is positioned in a polygon formed by all the limiting buckles which are sequentially connected, each limiting buckle comprises a rotating shaft which is fixedly connected to the sealing plate, a limiting block is arranged on the rotating shaft, one end of the limiting block is sleeved on the rotating shaft and can rotate around the rotating shaft, the upper end of the rotating shaft is in threaded connection with a limiting nut so as to limit the limiting block to move towards the direction far away from the sealing plate, one end of the limiting block far away from the rotating, the lower surface of the circular cover plate and one side of the circular cover plate, which is positioned in the equipment placing hole, are fixedly connected with a hinged support, the hinged support comprises two side brackets which are arranged oppositely, one sides of the two side brackets along the opposite directions are respectively provided with a slide way, the length direction of the slide way is vertical to the plane of the circular cover plate, the length of the slide way is greater than the hole depth of the equipment placing hole, a hinged shaft is arranged between the two side brackets, two ends of the hinged shaft are respectively connected onto the slide ways on the two sides in a sliding manner and can enable the hinged shaft to move along the length direction of the slide way, the lower surface of the closing plate is provided with a connecting rod, one end of the connecting rod;
the sealing plate is provided with a pull handle, the pull handle comprises a handle and handle bars positioned at two ends of the handle, the handle bars comprise a connecting rod I and a connecting rod II, one end of the connecting rod I is fixedly connected with one end of the connecting rod II so that the connecting rod I and the connecting rod II are integrally in an L-shaped structure, the planes of the two handle bars are oppositely and parallelly arranged, the central line of the handle is perpendicular to the plane of the handle bar, a rotating handle is fixedly connected to the position on the handle bar, where the connecting rod I and the connecting rod II are fixed, the rotating handle is positioned on one side opposite to each other, the two rotating handles are arranged on the same central line, the central line of the two rotating handles is perpendicular to the plane of the handle bar, one end of the connecting rod I, far away from the connecting rod II, is fixedly connected with the end of the handle on one side, a balancing weight is fixedly connected to one end of the connecting rod II, the two rotating handles are positioned in the mounting through hole and are rotatably connected to the hole wall of the mounting through hole, the central lines of the rotating handles are parallel to the plane of the sealing plate, when the rotating handles rotate, the handles and the balancing weight can penetrate through the mounting through hole, and when the plane of the sealing plate is vertically arranged and the pull handle is in a natural state, the projection of the handles along the direction vertical to the plane of the circular cover plate is positioned in the projection of the equipment placing hole vertical to the plane of the circular cover plate;
a cover plate fixing support is further arranged below the circular cover plate and comprises two opposite and parallel adjusting screw rods, the planes of the two adjusting screw rods are parallel to the plane of the circular cover plate, two ends of each adjusting screw rod are respectively sleeved with a sliding sleeve and can be in sliding fit with the sliding sleeve along the length direction of the adjusting screw rod, a connecting support rod is arranged between the two sliding sleeve at the same end and is fixedly connected with the adjusting screw rod through the connecting support rod, two adjusting nuts are in threaded connection with the adjusting screw rod and the rod body between the two sliding sleeve pipes on the adjusting screw rod, the two adjusting nuts can be respectively abutted against the sliding sleeve pipes on one side of the adjusting screw rod to adjust the distance between the two sliding sleeve pipes, one side of the two connecting support rods opposite to each other is fixedly connected with an installation seat, an installation screw hole is arranged on the installation seat, and the installation screw hole is a through hole, and the center line of, the circular cover plate is provided with two mounting screw holes, the two mounting screw holes are arranged on the circular cover plate, the screw sections of the connecting screws penetrate through the circular cover plate and are in threaded connection with the mounting screw holes, equipment through holes are formed between the two adjusting screw rods and the two connecting support rods, and when the circular cover plate is connected with the connecting support rods through the connecting screws, the equipment placing holes are perpendicular to the equipment through holes in the projection in the plane direction of the circular cover plate, and the projection in the plane direction of the circular cover plate is perpendicular to the equipment through holes in the projection in the plane direction of the circular cover plate.
(2) Placing the cover plate fixing support in the precipitation well at a position close to the well mouth, respectively and rotationally moving four adjusting nuts, and respectively pushing out the sliding pipe sleeves outwards to enable one ends of the sliding pipe sleeves, far away from the adjusting nuts, to be abutted against the well wall of the precipitation well so as to fix the cover plate fixing support in the precipitation well;
(3) then covering the circular cover plate on the precipitation wellhead, penetrating the circular cover plate through a connecting screw, connecting the circular cover plate to the mounting screw hole through threads, and fixing the circular cover plate on the precipitation wellhead;
(4) the limiting block is rotated to be far away from the circular cover plate, the closing plate is opened downwards, and the submersible pump is placed through the equipment placing hole to carry out dewatering operation in the dewatering well;
(5) and after the dewatering operation is finished, the submersible pump is taken out, the handle is held to pull the closing plate, the closing plate is rotated and moved upwards to seal the equipment placing hole, then the limiting block is rotated to be abutted against the upper surface of the circular cover plate to limit the closing plate, and the sealing cover of the dewatering well is finished.
In conclusion, the beneficial effects of the invention are as follows: according to the invention, the well cover is separately provided with the equipment placing hole for placing the submersible pump and extending the water pumping pipe, so that the dewatering operation can be completed while the dewatering well mouth is sealed, and the construction safety is improved.
Drawings
For purposes of promoting a better understanding of the objects, aspects and advantages of the invention, reference will now be made in detail to the present invention as illustrated in the accompanying drawings, in which:
fig. 1 is a cross-sectional view of a precipitation wellhead protective cover.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1, in the present embodiment, a method for sealing a precipitation wellhead for precipitation construction includes: the method comprises the following steps:
(1) obtain precipitation well head visor, precipitation well head visor includes circular apron 1, the hole is laid to equipment rather than the isocenter is seted up at circular apron 1's center, equipment is laid the hole department and is provided with rather than the unanimous closed plate 2 that is used for laying the hole and carrying out the confined to equipment, closed plate 2's upper surface and the position that is close to in its edge are provided with at least three spacing buckle, closed plate 2's center is located all spacing buckles in the polygon that line formed in proper order, spacing buckle includes the pivot of fixed connection on closed plate 2, be provided with stopper 3 in the pivot, the pot head of stopper 3 is established in the pivot in order to rotate around the pivot, pivot upper end threaded connection has stop nut 4 in order to keep away from closed plate 2 direction removal to stopper 3 orientation and carry on spacingly, stopper 3 keeps away from the one end of pivot in order to rotate to circular apron 1 on and the butt moves in order to closed plate 2 below circular apron 1 in order Move and carry out spacingly, circular apron 1's lower surface just is located one side fixedly connected with free bearing in the hole is laid to equipment, the free bearing includes two relative side branch framves 5 that set up, be provided with slide 6 respectively along one side of its relative direction on two side branch framves 5, the circular apron 1 place plane of length direction perpendicular to of slide 6, the length of slide 6 is greater than the hole depth that the hole was laid to equipment, be provided with hinge 7 between two side branch framves 5, sliding connection respectively on the slide 6 of both sides and can make hinge 7 remove along slide 6 length direction at the both ends of hinge 7, the lower surface of closing plate 2 is provided with connecting rod 8 and connecting rod 8's one end and closing plate 2 fixed connection, the other end rotation of connecting rod 8 is connected on hinge 7.
The sealing plate 2 is provided with a pull handle, the pull handle comprises a handle 9 and handle bars positioned at two ends of the handle 9, the handle bars comprise a connecting rod I10 and a connecting rod II 11, one end of the connecting rod I10 is fixedly connected with one end of the connecting rod II 11 so that the connecting rod I10 and the connecting rod II 11 are integrally in an L-shaped structure, the planes of the two handle bars are oppositely and parallelly arranged, the central line of the handle 9 is perpendicular to the plane of the handle bars, a rotating handle is fixedly connected to the position on the handle bar, where the connecting rod I10 and the connecting rod II 11 are fixed, the rotating handle is positioned at one side of the two handle bars, the two rotating handles are arranged at the same central line and the central line of the two rotating handles is perpendicular to the plane of the handle bars, one end of the connecting rod I10, far away from the connecting rod II 11, is fixedly connected with a balancing weight 12 at one end of the connecting rod II 11, so that the center of the, the sealing plate 2 is provided with an installation through hole, the two rotating handles are located in the installation through hole and are rotatably connected to the hole wall of the installation through hole, the central line of each rotating handle is parallel to the plane of the sealing plate 2, when the rotating handles rotate, the handle 9 and the balancing weight 12 can penetrate through the installation through hole, when the plane of the sealing plate 2 is vertically arranged and the pulling handle is in a natural state, the projection of the handle 9 in the plane direction perpendicular to the circular cover plate 1 is located in the projection of the equipment placing hole in the plane direction perpendicular to the circular cover plate 1.
Handle 9 is gone up the cover and is equipped with rather than normal running fit and wholly be the commentaries on classics cover of waist drum type, handle 9 is last and be located the both sides of changeing the cover and block respectively and be equipped with and be used for to changeing the cover edge handle 9 axis direction removes carries out spacing retaining ring.
Keep away from connecting rod I10 the outside arch of one end of connecting rod II 11 is formed with the projection rather than coaxial setting, and the diameter of projection is less than connecting rod I10's diameter, the through-hole that can make the projection pass is seted up respectively at the both ends of handle 9, and the through-hole of its place one side is worn respectively to the projection, and the one side threaded connection who just is located it and passes the through-hole on the projection has and is used for making connecting rod I10 with handle 9 carries out the nut fixed.
A cover plate fixing support is further arranged below the circular cover plate 1, the cover plate fixing support comprises two opposite and parallel adjusting screws 13, the plane of the two adjusting screws 13 is parallel to the plane of the circular cover plate 1, two ends of each adjusting screw 13 are respectively sleeved with a sliding sleeve 14 and the sliding sleeve 14 can be in sliding fit with the adjusting screw 13 along the length direction of the adjusting screw, a connecting support rod 15 is arranged between the two sliding sleeves 14 at the same end and is fixedly connected with the adjusting screw through the connecting support rod 15, two adjusting nuts 16 are in threaded connection with the adjusting screw 13 and the rod body between the two sliding sleeves 14 on the adjusting screw 13, the two adjusting nuts 16 can be respectively abutted against the sliding sleeves 14 at one side of the adjusting screw to adjust the distance between the two sliding sleeves 14, a mounting seat 17 is fixedly connected to the opposite side of the two connecting support rods 15, and a mounting screw hole is arranged on the mounting seat 17, the installation screw is the through-hole and two adjusting screw 13 place planes of centerline perpendicular to, the position that just corresponds two installation screw respectively on the circular cover plate 1 all is provided with connecting screw 18, connecting screw 18's screw rod section pass in circular cover plate 1 and threaded connection are on the installation screw, are formed with the equipment via hole between two adjusting screw 13 and two connecting strut 15, work as circular cover plate 1 links together through connecting screw 18 and connecting strut 15, and the hole is laid along the perpendicular to equipment via hole is located along the perpendicular to in the projection of circular cover plate 1 place plane side.
One end of the sliding sleeve 14, which is far away from the adjusting nut 16, is provided with a columnar plug 19 which is concentric with the sliding sleeve 14, the outer diameter of the columnar plug 19 is consistent with the outer diameter of the sliding sleeve 14, the columnar plug 19 protrudes towards one end of the sliding sleeve 14 to form a connecting stud which is coaxial with the columnar plug, the connecting stud is in threaded connection with an inner hole corresponding to the sliding sleeve 14, and one end, which is far away from the connecting stud, of the columnar plug 19 is a round end.
The round cover plate 1 is provided with a guide hole for the screw section of the connecting screw 18 to pass through, the lower surface of the round cover plate 1 is fixedly connected with a reinforcing convex rib with a # -shaped structure at a position corresponding to the guide hole, and the guide hole is positioned in a middle frame formed by the reinforcing convex rib with the # -shaped structure.
(2) Placing the cover plate fixing support in the precipitation well at a position close to the wellhead, respectively and rotationally moving four adjusting nuts 16, and respectively pushing out the sliding pipe sleeves 14 outwards, so that one ends of the sliding pipe sleeves 14 far away from the adjusting nuts 16 are abutted against the well wall of the precipitation well, and the cover plate fixing support is fixed in the precipitation well;
(3) then, covering the circular cover plate 1 on a precipitation wellhead, penetrating the circular cover plate 1 by using a connecting screw 18, connecting the circular cover plate 1 on the mounting screw hole in a threaded manner, and fixing the circular cover plate 1 on the precipitation wellhead;
(4) the limiting block 3 is rotated to be far away from the circular cover plate 1, the closing plate 2 is opened downwards, and a submersible pump is placed through the equipment placing hole to carry out precipitation operation in the precipitation well;
(5) after the dewatering operation is finished, the submersible pump is taken out, the closing plate 2 is pulled by the holding handle 9, the closing plate 2 is rotated and moved upwards to seal the equipment placing hole, then the limiting block 3 is rotated to be abutted against the upper surface of the circular cover plate 1 to limit the closing plate 2, and the sealing cover of the dewatering well is finished.
When the cover plate fixing support is used, the cover plate fixing support is installed firstly, is arranged in the precipitation well and is close to the well mouth, then is respectively screwed and moved, and is respectively pushed outwards to enable the sliding pipe sleeve to be tightly pressed against the well wall of the precipitation well, so that the cover plate fixing support is fixed in the precipitation well; then covering the circular cover plate on the wellhead of the dewatering well, penetrating the circular cover plate through a connecting screw, connecting the circular cover plate to the mounting screw hole in a threaded manner, and fixing the circular cover plate on the wellhead of the dewatering well; the limiting block is rotated to be far away from the circular cover plate, the sealing plate falls towards the lower part of the circular cover plate after leaving the limiting block, and meanwhile, the connecting rod fixed with the sealing plate drives the hinge shaft to slide downwards along the slide way; when the hinge shaft slides downwards to the end part of the lower end of the slide way, the end part of the slide way limits the hinge shaft so that the hinge shaft cannot slide downwards any more, so that the connecting rod rotates around the hinge shaft, the sealing plate rotates to be vertically arranged under the action of gravity, the equipment placing hole is opened, the handle rotates around the rotating handle under the action of gravity of the balancing weight to one side of the sealing plate, which faces the equipment placing hole, and then the submersible pump is placed through the equipment placing hole to perform dewatering operation in the dewatering well; after the dewatering operation is completed, the submersible pump is taken out, then the closing plate is pulled through the holding handle, the closing plate is moved horizontally and towards the equipment placing hole when rotating, after the closing plate seals the equipment placing hole, the limiting block is rotated to enable the limiting block to abut against the upper surface of the circular cover plate to limit the closing plate, and the sealing cover of the dewatering well is completed.
Finally, it is noted that the above-mentioned embodiments illustrate rather than limit the invention, and that, while the invention has been described with reference to preferred embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (1)
1. A method for sealing precipitation construction of a precipitation wellhead is characterized in that: the method comprises the following steps:
(1) obtaining a precipitation wellhead protective cover, wherein the precipitation wellhead protective cover comprises a circular cover plate, the center of the circular cover plate is provided with a device placing hole which is concentric with the circular cover plate, the device placing hole is provided with a sealing plate which is consistent with the device placing hole in shape and is used for sealing the device placing hole, the upper surface of the sealing plate and the position close to the edge of the sealing plate are provided with at least three limiting buckles, the center of the sealing plate is positioned in a polygon formed by all the limiting buckles which are sequentially connected, each limiting buckle comprises a rotating shaft which is fixedly connected to the sealing plate, a limiting block is arranged on the rotating shaft, one end of the limiting block is sleeved on the rotating shaft and can rotate around the rotating shaft, the upper end of the rotating shaft is in threaded connection with a limiting nut so as to limit the limiting block to move towards the direction far away from the sealing plate, one end of the limiting block far away from the rotating, the lower surface of the circular cover plate and one side of the circular cover plate, which is positioned in the equipment placing hole, are fixedly connected with a hinged support, the hinged support comprises two side brackets which are arranged oppositely, one sides of the two side brackets along the opposite directions are respectively provided with a slide way, the length direction of the slide way is vertical to the plane of the circular cover plate, the length of the slide way is greater than the hole depth of the equipment placing hole, a hinged shaft is arranged between the two side brackets, two ends of the hinged shaft are respectively connected onto the slide ways on the two sides in a sliding manner and can enable the hinged shaft to move along the length direction of the slide way, the lower surface of the closing plate is provided with a connecting rod, one end of the connecting rod;
the sealing plate is provided with a pull handle, the pull handle comprises a handle and handle bars positioned at two ends of the handle, the handle bars comprise a connecting rod I and a connecting rod II, one end of the connecting rod I is fixedly connected with one end of the connecting rod II so that the connecting rod I and the connecting rod II are integrally in an L-shaped structure, the planes of the two handle bars are oppositely and parallelly arranged, the central line of the handle is perpendicular to the plane of the handle bar, a rotating handle is fixedly connected to the position on the handle bar, where the connecting rod I and the connecting rod II are fixed, the rotating handle is positioned on one side opposite to each other, the two rotating handles are arranged on the same central line, the central line of the two rotating handles is perpendicular to the plane of the handle bar, one end of the connecting rod I, far away from the connecting rod II, is fixedly connected with the end of the handle on one side, a balancing weight is fixedly connected to one end of the connecting rod II, the two rotating handles are positioned in the mounting through hole and are rotatably connected to the hole wall of the mounting through hole, the central lines of the rotating handles are parallel to the plane of the sealing plate, when the rotating handles rotate, the handles and the balancing weight can penetrate through the mounting through hole, and when the plane of the sealing plate is vertically arranged and the pull handle is in a natural state, the projection of the handles along the direction vertical to the plane of the circular cover plate is positioned in the projection of the equipment placing hole vertical to the plane of the circular cover plate;
a cover plate fixing support is further arranged below the circular cover plate and comprises two opposite and parallel adjusting screw rods, the planes of the two adjusting screw rods are parallel to the plane of the circular cover plate, two ends of each adjusting screw rod are respectively sleeved with a sliding sleeve and can be in sliding fit with the sliding sleeve along the length direction of the adjusting screw rod, a connecting support rod is arranged between the two sliding sleeve at the same end and is fixedly connected with the adjusting screw rod through the connecting support rod, two adjusting nuts are in threaded connection with the adjusting screw rod and the rod body between the two sliding sleeve pipes on the adjusting screw rod, the two adjusting nuts can be respectively abutted against the sliding sleeve pipes on one side of the adjusting screw rod to adjust the distance between the two sliding sleeve pipes, one side of the two connecting support rods opposite to each other is fixedly connected with an installation seat, an installation screw hole is arranged on the installation seat, and the installation screw hole is a through hole, and the center line of, connecting screws are arranged on the circular cover plate and respectively correspond to the two mounting screw holes, screw sections of the connecting screws penetrate through the circular cover plate and are in threaded connection with the mounting screw holes, equipment through holes are formed between the two adjusting screws and the two connecting support rods, and when the circular cover plate is connected with the connecting support rods through the connecting screws, projections of the equipment placing holes along the direction perpendicular to the plane of the circular cover plate are located in projections of the equipment through holes along the direction perpendicular to the plane of the circular cover plate;
(2) placing the cover plate fixing support in the precipitation well at a position close to the well mouth, respectively and rotationally moving four adjusting nuts, and respectively pushing out the sliding pipe sleeves outwards to enable one ends of the sliding pipe sleeves, far away from the adjusting nuts, to be abutted against the well wall of the precipitation well so as to fix the cover plate fixing support in the precipitation well;
(3) then covering the circular cover plate on the precipitation wellhead, penetrating the circular cover plate through a connecting screw, connecting the circular cover plate to the mounting screw hole through threads, and fixing the circular cover plate on the precipitation wellhead;
(4) the limiting block is rotated to be far away from the circular cover plate, the closing plate is opened downwards, and the submersible pump is placed through the equipment placing hole to carry out dewatering operation in the dewatering well;
(5) and after the dewatering operation is finished, the submersible pump is taken out, the handle is held to pull the closing plate, the closing plate is rotated and moved upwards to seal the equipment placing hole, then the limiting block is rotated to be abutted against the upper surface of the circular cover plate to limit the closing plate, and the sealing cover of the dewatering well is finished.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910703286.2A CN110359474B (en) | 2019-07-31 | 2019-07-31 | Method for sealing precipitation construction of precipitation wellhead |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910703286.2A CN110359474B (en) | 2019-07-31 | 2019-07-31 | Method for sealing precipitation construction of precipitation wellhead |
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| Publication Number | Publication Date |
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| CN110359474A CN110359474A (en) | 2019-10-22 |
| CN110359474B true CN110359474B (en) | 2021-03-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910703286.2A Active CN110359474B (en) | 2019-07-31 | 2019-07-31 | Method for sealing precipitation construction of precipitation wellhead |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114215086B (en) * | 2021-11-29 | 2023-03-14 | 上海渊丰地下工程技术有限公司 | Multistage negative pressure gas lift type dewatering well |
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| JP2005139763A (en) * | 2003-11-07 | 2005-06-02 | Ohbayashi Corp | Pumping system and anticlogging device used for earth retaining excavation work |
| CN203514333U (en) * | 2013-10-23 | 2014-04-02 | 中天建设集团有限公司 | Basement soleplate precipitation well mouth blocking sleeve |
| CN203878598U (en) * | 2014-04-25 | 2014-10-15 | 中国建筑第八工程局有限公司 | Dewatering well cover structure |
| CN104947700A (en) * | 2015-07-01 | 2015-09-30 | 中国建筑一局(集团)有限公司 | Well sealing sleeve for dewatering well, dewatering well and dewatering well sealing method |
| CN207244645U (en) * | 2017-10-11 | 2018-04-17 | 黄河勘测规划设计有限公司 | Dewatering well well head comprehensive protector |
| CN108824462A (en) * | 2018-06-26 | 2018-11-16 | 五冶集团上海有限公司 | A kind of multi-functional plugging dewatering well device |
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2019
- 2019-07-31 CN CN201910703286.2A patent/CN110359474B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005139763A (en) * | 2003-11-07 | 2005-06-02 | Ohbayashi Corp | Pumping system and anticlogging device used for earth retaining excavation work |
| CN203514333U (en) * | 2013-10-23 | 2014-04-02 | 中天建设集团有限公司 | Basement soleplate precipitation well mouth blocking sleeve |
| CN203878598U (en) * | 2014-04-25 | 2014-10-15 | 中国建筑第八工程局有限公司 | Dewatering well cover structure |
| CN104947700A (en) * | 2015-07-01 | 2015-09-30 | 中国建筑一局(集团)有限公司 | Well sealing sleeve for dewatering well, dewatering well and dewatering well sealing method |
| CN207244645U (en) * | 2017-10-11 | 2018-04-17 | 黄河勘测规划设计有限公司 | Dewatering well well head comprehensive protector |
| CN108824462A (en) * | 2018-06-26 | 2018-11-16 | 五冶集团上海有限公司 | A kind of multi-functional plugging dewatering well device |
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| CN110359474A (en) | 2019-10-22 |
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