CN114658016B - Recoverable dewatering well pipe structure and mounting structure and construction method thereof - Google Patents
Recoverable dewatering well pipe structure and mounting structure and construction method thereof Download PDFInfo
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- CN114658016B CN114658016B CN202210355429.7A CN202210355429A CN114658016B CN 114658016 B CN114658016 B CN 114658016B CN 202210355429 A CN202210355429 A CN 202210355429A CN 114658016 B CN114658016 B CN 114658016B
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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
Abstract
The invention provides a recyclable dewatering well pipe structure, an installation structure and a construction method thereof, and belongs to the technical field of building construction. The technical proposal is as follows: the pipe comprises a first pipe section and a second pipe section, wherein the first pipe section is formed by splicing two semicircular rings, and two adjacent first pipe sections are connected with an annular part through threaded connection; the outer side of the upper end of the second pipe section is provided with a first convex circular ring, the first convex circular ring is connected with the first pipe section through threads, and the lower ends of other second pipe sections can be arranged in the first convex circular ring through threads; the device comprises a first pipe section, a second pipe section, a third pipe section and an annular bottom support, wherein the outer side of the upper end of the first pipe section is provided with a first convex ring, the first convex ring is connected with the first pipe section at the lowest layer through threads, the annular bottom support is arranged below the first pipe section through threads, and the lower part of the first pipe section and the lower part of the annular bottom support are sealed; a plurality of filtering holes are formed in the side wall of the second pipe section, the side wall of the third pipe section and the sealing end of the third pipe section; and the outer wall of the pipe section III is provided with a lifting lug. The beneficial effects of the invention are as follows: the well tubular structure may be retrieved.
Description
Technical Field
The invention relates to the technical field of building construction, in particular to a recoverable dewatering well pipe structure, an installation structure thereof and a construction method thereof.
Background
Before the deep foundation pit is excavated, the size and the depth of a precipitation well are designed and constructed according to geological investigation conditions, precipitation is required to be started to excavate earthwork in the pit after the precipitation is 1m below the designed foundation pit. Precipitation is particularly important in the early stages of foundation pit engineering. At present, after the construction is completed on a dewatering well, the dewatering construction in the pit is performed by adopting a mode of removing pipe joints while excavating, and the pipe joints are generally made of coarse aggregate concrete. The following problems exist when performing the removal of pipe joints: material waste and pipe joint direct breaking; the pipe joint material is broken and is easily hung into a pipe to block the water pump; the bump in the transportation and installation process causes the incomplete edges and corners, is influenced by external force, and the installation section is not staggered up and down normally, so that soil leaks into the well and blocks the water pump.
Disclosure of Invention
The invention aims to provide a recyclable dewatering well pipe structure, and an installation structure and a construction method thereof.
The invention is realized by the following measures: the recoverable dewatering well pipe structure is characterized by comprising a plurality of first pipe sections and second pipe sections, wherein external threads are arranged at two ends of each first pipe section, each first pipe section is formed by splicing two semicircular rings, and two adjacent first pipe sections are connected with an annular part through threaded connection;
the outer side of the upper end of the second pipe section is provided with a first convex circular ring, the first convex circular ring is connected with the first pipe section at the lowest layer through threads, the first pipe section is positioned in the first convex circular ring, and the lower ends of other second pipe sections can be arranged in the first convex circular ring through threads;
the device comprises a first pipe section, a second pipe section, a third pipe section and an annular bottom support, wherein the first pipe section is arranged below the first pipe section;
a plurality of filtering holes are formed in the side wall of the second pipe section, the side wall of the third pipe section and the sealing end of the third pipe section;
a plurality of lifting lugs are uniformly distributed on the outer wall of the pipe section III in the circumferential direction;
the first pipe section, the second pipe section, the third pipe section and the annular collet are all made of steel.
The sealed end of the pipe section III is used for supporting the water pump, and the interval between the sealed end and the annular collet can be used for depositing mud, so that the water pump is prevented from being blocked by the mud entering from the upper end of the wellhead.
The middle position of the opening end of one semicircular ring is provided with a slot, and the middle position of the opening end of the other semicircular ring is provided with an inserting block inserted in the slot.
The utility model provides a mounting structure for recoverable precipitation well tubular structure includes construction platform, be provided with the round hole that the internal diameter is greater than the precipitation well internal diameter on the construction platform, on the construction platform and be located the outside of round hole is provided with annular boss, be provided with the convex groove that the opening is up on the annular boss, the convex inslot rotation be provided with convex groove complex annular plate, the symmetry is provided with the support on the annular plate, two be provided with the centre gripping between the support the centre gripping structure of pipeline section one.
The clamping structure comprises a fixing rod connected with two brackets and a bidirectional screw rod rotatably arranged between the two brackets, wherein the bidirectional screw rod and the fixing rod are both positioned on the outer side of the round hole, clamping plates are arranged at the two ends of the bidirectional screw rod through threaded connection, the clamping plates are sleeved on the fixing rod, two protrusions are symmetrically arranged on opposite faces of the clamping plates, U-shaped grooves which are vertically communicated are arranged on the protrusions, a cylinder matched with the U-shaped grooves is arranged on the outer wall of the lower portion of the first pipe section and above the threaded connection part, and the cylinder can be inserted into the U-shaped grooves and is driven by a power mechanism. The power mechanism can be a motor with a speed reducer or a hand wheel.
And universal wheels which are contacted with the upper end face of the construction platform are arranged on the two brackets. Therefore, when the bracket is rotated, manpower is saved, and the installation efficiency is improved.
And a gap is formed between the outer wall of the column body and the inner wall of the U-shaped groove. Thus, fine adjustment is conveniently realized in the butt joint process of the first pipe section.
An arc-shaped part matched with the outer wall of the first pipe section is arranged between the two protrusions, and the inner diameter of the arc-shaped part is slightly larger than or equal to the outer diameter of the first pipe section.
Two on the support and be located the below of grip block is provided with two openings, still including sliding the setting two U type pole in the opening, be provided with the spacing ring on the outer wall of ring spare, two tip of U type pole can insert the below of spacing ring, the spacing ring overlap joint is in on the U type pole.
The construction method of the recoverable precipitation well pipe structure is characterized by comprising the following specific steps of:
s1, pouring broken stone with the thickness of 50cm into a precipitation well to serve as a broken stone cushion layer; (convenient later-stage placement of ring-shaped bottom bracket)
S2, erecting a construction platform, enabling a round hole on the construction platform to coincide with the center of a precipitation well, leveling and fixing;
s3, the annular collet is connected with the pipe section through three threads, and is placed into a dewatering well through hoisting equipment;
s4, when only the convex ring II of the third residual pipe section is exposed out of the dewatering well, stopping the hoisting equipment, manually installing a second pipe section, and then starting the hoisting equipment to discharge the pipe;
s5, when only the convex circular ring I of the second residual pipe section is exposed out of the dewatering well, stopping the hoisting equipment, manually installing the second pipe section, and then starting the hoisting equipment to discharge the pipe;
s6, repeating the step S5 according to the water level, stopping the hoisting equipment when the convex circular ring I of the pipe section II of the last section is exposed out of the dewatering well, and installing the pipe section I; the first pipe section is positioned above the water level.
S7, rotating the bidirectional screw rod, adjusting the positions of the two clamping plates to enable the two semicircular rings to be placed at the positions of the clamping plates and the opening ends to be arranged oppositely, then rotating the bidirectional screw rod to enable the insert block to enter the slot, inserting the U-shaped slot into the column body, and installing an annular piece above the first pipe section; the first pipe section is basically concentric with the second pipe section under the limitation of the U-shaped groove and the clamping plate, and fine adjustment can be realized due to the clearance between the U-shaped groove and the column body.
S8, rotating the bracket, enabling the U-shaped groove to drive the pipe section I to rotate, enabling the pipe section I to enter the convex circular ring I, and enabling the hoisting equipment to start pipe discharging; the U-shaped groove is spliced with the column body on the first pipe section and is communicated up and down, so that the downward movement of the first pipe section in the rotating process is not influenced, and the threaded connection of the first pipe section is realized;
s9, stopping the hoisting equipment when only the residual ring piece is exposed out of the dewatering well, repeatedly installing the first second section pipe in S7, and then starting the hoisting equipment to discharge the pipe;
s10, installing the rest pipe section I according to the depth of the foundation pit;
and S11, filling gravel into the periphery of the pipe joint after the completion of pipe descending. Therefore, the pipeline can be conveniently integrally lifted out in the later period, graded broken stone is generally selected, the particle size of the broken stone is larger than the aperture of the filtering hole, the broken stone is prevented from entering the well pipe, and the filling thickness is 10cm, so that the filtering effect is realized. And finally cleaning the pipeline, and installing a suction pump and a suction pipe.
After the hoisting equipment stops, the U-shaped rod is inserted into the through hole, so that the limiting ring or the convex ring II or the convex ring I can be lapped on the U-shaped rod. Therefore, pipelines in the dewatering wellhead can be limited through the U-shaped rod, the problem that lifting equipment fails or is misoperation, the pipelines fall down is avoided, and the safety of pipe section butt joint is improved. The hoisting equipment generally adopts a truck crane.
Lifting lugs can also be arranged on the outer walls of the first pipe section and the second pipe section.
Compared with the prior art, the invention has the beneficial effects that: the well pipe structure is made of steel materials, and the pipe section I with the largest use is formed by splicing, so that the later disassembly and recovery are convenient; in order to facilitate the installation of the first pipe section, a corresponding installation structure is also designed, so that the installation efficiency can be improved.
Drawings
Fig. 1 is a schematic overall structure of an embodiment of the present invention.
Fig. 2 is a schematic structural view of a construction platform and a clamping structure.
Fig. 3 is a schematic structural view of a first pipe section.
Fig. 4 is a schematic structural diagram of a second pipe section.
Fig. 5 is a schematic structural view of a third pipe section.
Fig. 6 is a schematic structural view of the ring.
Fig. 7 is a state diagram of the well tubular structure when running down a pipe.
Fig. 8 is a usage state reference diagram.
Wherein, the reference numerals are as follows: 1. a first pipe section; 2. a second pipe section; 3. a third pipe section; 4. a ring member; 5. an annular bottom bracket; 6. a construction platform; 7. a clamping structure; 8. a universal wheel; 10. hoisting equipment; 11. a gravel cushion layer; 12. a water surface; 13. a water pump; 14. a water pumping pipe; 101. a column; 102. a semicircular ring; 103. a slot; 104. inserting a column; 201. a first convex ring; 301. a second convex ring; 401. a limiting ring; 601. an annular boss; 602. a bracket; 701. a fixed rod; 702. a bidirectional screw; 703. a clamping plate; 704. a protrusion; 705. a U-shaped groove; 706. an arc-shaped portion; 707. and a hand wheel.
Detailed Description
In order to clearly illustrate the technical characteristics of the scheme, the scheme is explained below through a specific embodiment.
Embodiment one:
referring to fig. 1, 3, 4, 5 and 6, a recoverable dewatering well pipe structure comprises a plurality of pipe sections 1 and two pipe sections 2, wherein external threads are arranged at two ends of each pipe section 1, each pipe section 1 is formed by splicing two semicircular rings 102, and two adjacent pipe sections 1 are connected with an annular piece 4 through threaded connection;
the outer side of the upper end of the pipe section II 2 is provided with a convex circular ring I201, the convex circular ring I201 is connected with the pipe section I at the lowest layer through threads, the pipe section I is positioned in the convex circular ring I201, and the lower ends of other pipe sections II 2 can be arranged in the convex circular ring I201 through threads;
the pipe further comprises a pipe section III 3 and an annular collet 5 arranged below the pipe section III 3, a convex circular ring II 301 is arranged on the outer side of the upper end of the pipe section III 3, the convex circular ring II 301 is connected with the pipe section II at the lowest layer through threads, the pipe section II is positioned in the convex circular ring II 301, the annular bottom support 5 is arranged below the pipe section III 3 through threaded connection, the lower part of the pipe section III 3 and the lower part of the annular bottom support 5 are sealed, and a space is reserved between the lower surface of the pipe section III 3 and the inner bottom surface of the annular bottom support 5;
a plurality of filtering holes are formed in the side wall of the pipe section II 2, the side wall of the pipe section III 3 and the sealing end of the pipe section III 3;
a plurality of lifting lugs are circumferentially and uniformly distributed on the outer wall of the pipe section III 3;
the first pipe section 1, the second pipe section 2, the third pipe section 3 and the annular collet 5 are all made of steel.
The sealed end of the pipe section III 3 is used for supporting the water suction pump 13, and the interval between the pipe section III and the annular bottom support 5 can be used for depositing mud, so that the mud entering from the upper end of the wellhead is prevented from blocking the water suction pump 13.
A slot 103 is arranged in the middle of the opening end of one semicircle 102, and an inserting block 104 inserted in the slot 103 is arranged in the middle of the opening end of the other semicircle 102.
Lifting lugs can also be arranged on the outer walls of the pipe section I1 and the pipe section II 2.
Embodiment two:
referring to fig. 1 and 2, an installation structure of a recoverable dewatering well pipe structure in a first embodiment comprises a construction platform 6, wherein a round hole with an inner diameter larger than that of a dewatering well is formed in the construction platform 6, an annular boss 601 is arranged on the construction platform 6 and located on the outer side of the round hole, a convex groove with an upward opening is formed in the annular boss 601, an annular plate matched with the convex groove is rotationally arranged in the convex groove, supports 602 are symmetrically arranged on the annular plate, and a clamping structure 7 for clamping a pipe section 1 is arranged between the two supports 602.
The clamping structure 7 comprises a fixing rod 701 connected with two brackets 602 and a bidirectional screw rod 702 rotatably arranged between the two brackets 602, the bidirectional screw rod 702 and the fixing rod 701 are both positioned on the outer side of a round hole, clamping plates 703 are arranged at two ends of the bidirectional screw rod 702 through threaded connection, the clamping plates 703 are sleeved on the fixing rod 701, two protrusions 704 are symmetrically arranged on opposite faces of the two clamping plates 703, U-shaped grooves 705 penetrating up and down are arranged on the protrusions 704, a cylinder 101 matched with the U-shaped grooves 705 is arranged on the outer wall of the lower portion of the first pipe section 1 and above the threaded connection, the cylinder 101 can be inserted into the U-shaped grooves 705, and the bidirectional screw rod 702 is driven by a power mechanism. The power mechanism may be a motor with a speed reducer or a hand wheel 707.
The two brackets 602 are provided with universal wheels 8 which are contacted with the upper end face of the construction platform 6. Thus, when the bracket 602 is rotated, labor is saved, and the installation efficiency is improved.
A gap is provided between the outer wall of the column 101 and the inner wall of the U-shaped groove 705. Thus, fine adjustment is conveniently realized in the butt joint process of the first pipe section 1.
An arc-shaped part 706 matched with the outer wall of the pipe section 1 is arranged between the two protrusions 704, and the inner diameter of the arc-shaped part 706 is slightly larger than or equal to the outer diameter of the pipe section 1.
Two supports 602 are provided with two through openings on the below that just is located grip block 703, still include the sliding setting U type pole 9 in two through openings, be provided with spacing ring 401 on the outer wall of ring 4, the below of spacing ring 401 can be inserted to two tip of U type pole 9, spacing ring 401 overlap joint on U type pole 9.
Embodiment three;
referring to fig. 1 to 8, a construction method of a recoverable precipitation well tubular structure is characterized by comprising the following specific steps:
s1, pouring broken stone with the thickness of 50cm into a precipitation well to serve as a broken stone cushion layer 11; (convenient later placement of the Ring-shaped shoe 5)
S2, erecting a construction platform 6, enabling a round hole on the construction platform 6 to coincide with the circle center of the dewatering well, leveling and fixing;
s3, the annular collet 5 is in threaded connection with the pipe section III 3, and is placed into a dewatering well through hoisting equipment;
s4, when only the second convex ring 301 of the third residual pipe section 3 is exposed out of the dewatering well, stopping the hoisting equipment, manually installing the second pipe section 2, and then starting the hoisting equipment to discharge the pipe;
s5, when only the convex circular ring I201 of the second remaining pipe section 2 is exposed out of the dewatering well, stopping the hoisting equipment, manually installing the second pipe section 2, and then starting the hoisting equipment to discharge the pipe;
s6, repeating S5 according to the water level, stopping the hoisting equipment when the convex ring I201 of the pipe section II 2 of the last section is exposed out of the dewatering well, and installing the pipe section I1; the first pipe section 1 is positioned above the water level.
S7, rotating the bidirectional screw 702, adjusting the positions of the two clamping plates 703, enabling the two semicircular rings 102 to be placed at the positions of the clamping plates 703 and the open ends to be opposite to each other, then rotating the bidirectional screw 702, enabling the insert 104 to enter the slot 103, simultaneously enabling the U-shaped slot 705 to be inserted into the column 101, and installing the annular piece 4 above the first pipe section 1; the first pipe section 1 is basically concentric with the second pipe section 2 under the limitation of the U-shaped groove 705 and the clamping plate 703, and fine adjustment can be realized due to the clearance between the U-shaped groove 705 and the column 101.
S8, rotating a bracket 602, wherein a U-shaped groove 705 drives a first pipe section 1 to rotate, the first pipe section 1 enters a first convex ring 201, and hoisting equipment starts a lower pipe; because the U-shaped groove 705 is spliced with the column 101 on the pipe section I1 and the U-shaped groove 705 is communicated up and down, the downward movement of the pipe section I1 in the rotation process is not influenced, and the threaded connection of the pipe section I1 is realized;
s9, stopping the hoisting equipment when only the residual ring-shaped piece 4 is exposed out of the dewatering well, repeatedly installing the first section 1 of the second section S7, and then starting the hoisting equipment to discharge the pipe;
s10, installing the rest pipe section I1 according to the depth of the foundation pit;
and S11, filling gravel into the periphery of the pipe joint after the completion of pipe descending. Therefore, the pipeline can be conveniently integrally lifted out in the later period, graded broken stone is generally selected, the particle size of the broken stone is larger than the aperture of the filtering hole, the broken stone is prevented from entering the well pipe, and the filling thickness is 10cm, so that the filtering effect is realized. Finally, the pipeline is cleaned, and a suction pump 13 and a suction pipe 14 are installed.
After the hoisting equipment is stopped, the U-shaped rod 9 is inserted into the through hole, so that the limiting ring 401 or the convex circular ring two 301 or the convex circular ring one 201 can be lapped on the U-shaped rod 9. Therefore, the pipeline in the dewatering wellhead can be limited through the U-shaped rod 9, the problem that the lifting equipment 10 fails or is in misoperation, the pipeline falls down is avoided, and the safety of the pipe section during butt joint is improved. The hoisting equipment generally adopts a truck crane.
It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other.
In the description of the invention, it should be understood that the terms "center," "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships that are based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the invention and simplify the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be configured and operate in a particular orientation, and therefore should not be construed as limiting the invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "configured" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the creation of the present invention can be understood by those of ordinary skill in the art in a specific case.
The technical features of the present invention that are not described in the present invention may be implemented by or using the prior art, and are not described in detail herein, but the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, but is also intended to be within the scope of the present invention by those skilled in the art.
Claims (6)
1. The recoverable dewatering well pipe structure is characterized by comprising a plurality of first pipe sections and second pipe sections, wherein external threads are arranged at two ends of each first pipe section, each first pipe section is formed by splicing two semicircular rings, and two adjacent first pipe sections are connected with an annular part through threaded connection;
the outer side of the upper end of the second pipe section is provided with a first convex circular ring, the first convex circular ring is connected with the first pipe section at the lowest layer through threads, the first pipe section is positioned in the first convex circular ring, and the lower ends of other second pipe sections can be arranged in the first convex circular ring through threads;
the device comprises a first pipe section, a second pipe section, a third pipe section and an annular bottom support, wherein the first pipe section is arranged below the first pipe section;
a plurality of filtering holes are formed in the side wall of the second pipe section, the side wall of the third pipe section and the sealing end of the third pipe section;
a plurality of lifting lugs are uniformly distributed on the outer wall of the pipe section III in the circumferential direction;
the first pipe section, the second pipe section, the third pipe section and the annular collet are all made of steel.
2. The recoverable precipitation well tubular structure of claim 1, wherein a slot is provided in the middle of the open end of one of the semicircle rings, and a plug inserted into the slot is provided in the middle of the open end of the other semicircle ring.
3. The mounting structure for the recoverable dewatering well tubular structure according to claim 1 is characterized by comprising a construction platform, wherein a round hole with an inner diameter larger than that of a dewatering well is formed in the construction platform, an annular boss is formed in the construction platform and located on the outer side of the round hole, a convex groove with an upward opening is formed in the annular boss, an annular plate matched with the convex groove is rotationally arranged in the convex groove in a rotating mode, supports are symmetrically arranged on the annular plate, and a clamping structure for clamping a first pipe section is arranged between the two supports.
4. The mounting structure of a recoverable precipitation well tubular structure according to claim 3, wherein the clamping structure comprises a fixing rod connected with two brackets and a bidirectional screw rod rotatably arranged between the two brackets, the bidirectional screw rod and the fixing rod are both positioned on the outer side of the round hole, clamping plates are arranged at two ends of the bidirectional screw rod through threaded connection, the clamping plates are sleeved on the fixing rod, two protrusions are symmetrically arranged on opposite faces of the two clamping plates, a U-shaped groove penetrating up and down is arranged on the protrusions, a cylinder matched with the U-shaped groove is arranged on the outer wall of the lower portion of the first pipe section and above the threaded connection, and the cylinder can be inserted into the U-shaped groove, and is driven by a power mechanism.
5. The installation structure of a recoverable precipitation well tubular structure according to claim 4, wherein a gap is provided between the outer wall of the column and the inner wall of the U-shaped groove.
6. The installation structure of a recoverable precipitation well tubular structure according to claim 4, wherein an arc-shaped portion matched with the outer wall of the first pipe section is arranged between the two protrusions, and the inner diameter of the arc-shaped portion is slightly larger than or equal to the outer diameter of the first pipe section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210355429.7A CN114658016B (en) | 2022-04-06 | 2022-04-06 | Recoverable dewatering well pipe structure and mounting structure and construction method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210355429.7A CN114658016B (en) | 2022-04-06 | 2022-04-06 | Recoverable dewatering well pipe structure and mounting structure and construction method thereof |
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| CN114658016A CN114658016A (en) | 2022-06-24 |
| CN114658016B true CN114658016B (en) | 2023-07-25 |
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