CN114541993B - Totally-enclosed multistage sedimentation underground slurry pond device and construction method - Google Patents
Totally-enclosed multistage sedimentation underground slurry pond device and construction method Download PDFInfo
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- CN114541993B CN114541993B CN202210262269.1A CN202210262269A CN114541993B CN 114541993 B CN114541993 B CN 114541993B CN 202210262269 A CN202210262269 A CN 202210262269A CN 114541993 B CN114541993 B CN 114541993B
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- 238000010276 construction Methods 0.000 title claims abstract description 25
- 238000004062 sedimentation Methods 0.000 title claims abstract description 11
- 239000002002 slurry Substances 0.000 title claims description 29
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 95
- 239000010959 steel Substances 0.000 claims abstract description 95
- 238000001914 filtration Methods 0.000 claims abstract description 19
- 238000005553 drilling Methods 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 claims description 29
- 239000013049 sediment Substances 0.000 claims description 23
- 230000008569 process Effects 0.000 claims description 20
- 238000009434 installation Methods 0.000 claims description 15
- 239000000463 material Substances 0.000 claims description 15
- 239000011159 matrix material Substances 0.000 claims description 11
- 238000007790 scraping Methods 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 9
- 239000004927 clay Substances 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 6
- 239000002893 slag Substances 0.000 claims description 6
- 238000009826 distribution Methods 0.000 claims description 4
- 239000012466 permeate Substances 0.000 claims description 4
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 238000010030 laminating Methods 0.000 claims description 3
- 230000001681 protective effect Effects 0.000 claims description 2
- 238000003860 storage Methods 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 230000008859 change Effects 0.000 abstract description 2
- 239000012141 concentrate Substances 0.000 abstract description 2
- 238000002360 preparation method Methods 0.000 abstract description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 abstract 2
- 235000017491 Bambusa tulda Nutrition 0.000 abstract 2
- 241001330002 Bambuseae Species 0.000 abstract 2
- 235000015334 Phyllostachys viridis Nutrition 0.000 abstract 2
- 239000011425 bamboo Substances 0.000 abstract 2
- 239000012535 impurity Substances 0.000 description 5
- 238000009412 basement excavation Methods 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 2
- 102000010637 Aquaporins Human genes 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 238000009933 burial Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/01—Arrangements for handling drilling fluids or cuttings outside the borehole, e.g. mud boxes
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/06—Arrangements for treating drilling fluids outside the borehole
- E21B21/063—Arrangements for treating drilling fluids outside the borehole by separating components
- E21B21/065—Separating solids from drilling fluids
- E21B21/066—Separating solids from drilling fluids with further treatment of the solids, e.g. for disposal
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/10—Valve arrangements in drilling-fluid circulation systems
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
Abstract
The invention relates to the technical field of preparation and storage of building mud, in particular to a fully-closed multistage sedimentation underground mud pit device and a construction method, wherein the mud pit device comprises a steel casing, a mud separator and a circulating assembly, and has the beneficial effects that: through with steel section of thick bamboo, communicating pipe, silt separator, grid and mud constitution a whole set of mud underground circulation system, when pile foundation pore-forming, concentrate through the mud pond and filter the mud and change into through the hierarchical filtration of section of thick bamboo of protecting among the prior art, reach the filtration step by step and used repeatedly of mud, get together mud circulation system and pile foundation pore-forming better on saving the mud pond's basis to through the control of opening and close the valve, rationally master the mud filtration route, can guarantee the reasonable index of mud when guaranteeing that mud reentry drilling.
Description
Technical Field
The invention relates to the technical field of preparation and storage of building mud, in particular to a fully-closed multistage sedimentation underground mud pool device and a construction method.
Background
In the bridge pile foundation construction process, under the condition of using mud to protect walls, mud has important functions of protecting drilling stability, ensuring hole wall quality and carrying drilling slag.
In the construction process, a foundation pit is generally excavated around the pile foundation construction and used as a drilling mud circulation tank, or a finished mud container is used as a mud tank.
The first type of mud pit arrangement requires a large site around the pile foundation to meet the mud circulation capacity. Because the mud pit is formed by excavation of a foundation pit, mud waste is easy to be caused by stability of pit walls and larger porosity of side slopes, and in addition, the leaked mud pit and mud can have certain environmental influence on surrounding environment and water areas.
And the finished product circulating slurry tank adopted by the second slurry tank is required to be processed, the foundation pit is excavated in the field implementation process, and then the finished product circulating slurry tank is placed in the foundation pit which is excavated in advance. Although the pit wall is not affected, the excavation workload of the foundation pit is large, and the manufacturing, mounting and dismantling processes are complicated, so that the method is not beneficial to the feasible operation on site.
Setting and construction operation to above-mentioned two kinds of mud ponds, although can satisfy the pile foundation in-process drilling slag and get rid of, mud circulation outward transport, also caused certain influence to site operation simultaneously: the problems of slurry leakage, side slope instability, complicated and complex procedures, obvious cost consumption, obvious environmental impact and the like. Especially for pile foundation construction in river channels or water domains, the foundation pit excavation or finished product mud pit is carried out on site obviously without construction conditions due to the limited site.
Disclosure of Invention
The invention aims to provide a totally-enclosed multistage sedimentation underground slurry pond device and a construction method thereof, which aim to solve the problem of slurry storage in the building construction process.
In order to achieve the above purpose, the present invention provides the following technical solutions:
a fully enclosed multi-stage sedimentation underground mud pit apparatus, the mud pit apparatus comprising:
six groups of steel pile casings distributed in a matrix are pre-buried underground, the inner cavity of the lower end of each steel pile casing is sealed through a back cover, a top plate is mounted at the port of the upper end of each steel pile casing, and a grid is arranged at the position of each top plate corresponding to the port of each steel pile casing;
the sediment separator is positioned on the ground, and a discharge hole, a feed pipe and a return pipe are arranged on the sediment separator;
the circulating assembly comprises six groups of communicating pipes of steel casings distributed in a communicating matrix and an opening and closing valve located in the steel casings, the communicating pipes located in the pair of steel casings close to the sediment separator are communicated with the sediment separator through a feeding pipe and a return pipe respectively, one end of the opening and closing valve is connected with the communicating pipes, and the lower end of the opening and closing valve is connected with a suction pipe extending to the upper end of the back cover.
Preferably, a mounting inner ring is arranged in the middle of the inner cavity of the grating, the grating is sealed with the mounting inner ring through a grating net, and the feeding pipe and the return pipe penetrate through the mounting inner ring to be communicated with the sediment separator and the steel casing.
Preferably, a positioning lantern ring is arranged at the lower end of the grille, the upper end screw of the grille is fixed on the top plate, and the positioning lantern ring is sleeved on the inner wall of the upper end port of the steel casing.
Preferably, the positions of the top plate corresponding to the ports at the upper ends of the six groups of steel protection cylinders distributed in the matrix are provided with mounting grooves, the four corner positions of the top plate are provided with mounting holes, the top plate is fixed on the ground through insertion cones inserted in the mounting holes, and the grids are mounted in the mounting grooves.
Preferably, the upper end of the opening and closing valve is provided with a pull rod, the upper end of the pull rod extends to the installation inner ring, the upper end part of the pull rod penetrates through the installation inner ring, and the pull rod is fastened and connected with the upper end surface of the installation inner ring through a fixing bolt.
Preferably, the lower extreme tip of inhaling the material pipe is provided with the chassis, the upper end of back cover is provided with annular counter weight ring, the centre of counter weight ring is provided with the filtration inner ring with one heart, leads to the crossbeam fixed connection of circumference array distribution between counter weight ring and the filtration inner ring.
Preferably, the upper end of filtering the inner ring is provided with the multiunit connecting rod of circumference array distribution, the upper end of connecting rod passes through connecting bolt fixed connection chassis, and the clearance between the adjacent connecting rod is less than the internal diameter of inhaling the material pipe, the upper end of counter weight ring is provided with the scraping ring of conical cambered surface inner wall, the outer wall laminating steel of scraping the inner wall of a casing.
The construction method realized by the fully-closed multistage sedimentation underground slurry pond device comprises the following steps of:
step one: calculating the maximum slurry amount in a drilling hole in the hole forming process according to the length, the diameter and the number of pile foundations, and calculating the number and the embedding depth of required steel casings;
step two: forming holes through a hole forming machine, embedding a steel protective cylinder and making a bottom sealing;
step three: preparing communicating pipe inlets according to the calculated number of the steel casings, reserving communicating pipe inlets at a position which is mm away from the top of the casings in advance when the steel casings are manufactured, and effectively connecting the communicating pipes with the steel casings to prevent mud leakage;
step four: after the communicating pipe is installed, the opening and closing valve is closed, and in the use process, partial or all valves are opened and closed as required;
step five: after all communicating pipes and opening and closing valves are installed, installing a top plate and a grid at the position of an upper end port of a steel casing, fixing the periphery of the top plate with the ground by using expansion bolts, and fixing the grid on the top plate by using buckles;
step six: starting a drilling machine to perform pore-forming operation, and timely utilizing a sediment separator and an outward transport vehicle to perform mud filtration, circulation, reuse and drill slag outward transport, wherein the whole mud circulation system is normally used;
step seven: after the pile foundations at the first position are formed, the drilling machine is shifted, the sediment separator is shifted, the communicating pipe is arranged, the valve is opened and closed, the steps are repeated to form holes on the rest pile foundations until all pile foundations are formed, and the device is disassembled.
Preferably, the steel pile casing is a temporary pile casing or a permanent pile casing for pile foundation construction, the pile casing is pre-buried before pile foundation construction, the hole wall stability in the pile foundation hole forming process is ensured, the communicating pipe is a round metal pipe connected between the steel pile casings, the communicating pipe is made of a metal steel pipe or a hard plastic pipe, the communicating pipe is welded or sealed with the steel pile casings, the grid is a steel grid, the back cover is made of water-proof or weak water-proof materials such as clay, powdery clay and the like, and the purpose of the sealing is to seal the bottom space of the steel pile casings, so that mud is ensured not to permeate into the bottom of the steel pile casings in the circulation process.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, the circulating filtering and separating slurry pond consisting of six groups of steel pile casings distributed in a matrix is arranged, so that the problems of effective circulation of slurry for bridge pile foundation construction and effective removal of drilling slag under the limited conditions of river channels, water areas and places are solved, and an underground slurry pond device and a construction method are provided, the slurry performance of the circulated slurry can be repeatedly utilized, the method avoids that the slurry circulation occupies larger places and resources, saves land resources, ensures normal construction and slurry circulation of the pile foundation, and ensures clean and tidy construction environment of nearby water areas and places;
through with steel pile casing, communicating pipe, silt separating centrifuge, grid and mud constitution a whole set of mud underground circulation system, when the pile foundation pore-forming, concentrate through the mud pond among the prior art and filter the mud and change into through pile casing hierarchical filtration, reach the filtration step by step and used repeatedly of mud, get together mud circulation system and pile foundation pore-forming better on saving the basis of mud pond to through opening and closing the control of valve, rationally master the mud filtration route, can guarantee the reasonable index of mud when guaranteeing that mud reentrant drilling.
Drawings
FIG. 1 is a top view of the present invention;
FIG. 2 is a schematic view of a steel casing structure of the present invention;
FIG. 3 is a schematic view of a back cover mounting structure of the present invention;
FIG. 4 is a schematic view of a top plate in a three-dimensional structure according to the present invention;
fig. 5 is a schematic perspective view of a counterweight ring according to the invention.
In the figure: 1. a steel pile casing; 2. a sediment separator; 3. a discharge port; 4. a return pipe; 5. a feed pipe; 6. opening and closing a valve; 7. a pull rod; 8. a communicating pipe; 9. sealing the bottom; 10. a counterweight ring; 11. a top plate; 12. a fixing bolt; 13. a grille; 14. a grid mesh; 15. positioning the lantern ring; 16. a mounting groove; 17. installing an inner ring; 18. a scraping ring; 19. filtering the inner ring; 20. a suction pipe; 21. a chassis; 22. a connecting bolt; 23. a connecting rod; 24. a cross beam; 25. and (5) mounting holes.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1 to 5, the present invention provides a technical solution:
example 1
A fully-closed multistage sedimentation underground slurry pond device comprises a steel casing 1, a sediment separator 2 and a circulating assembly.
Six groups of steel casings 1 distributed in a matrix are pre-buried underground, and a plurality of groups of steel casings 1 are utilized to form a serial mud pit, so that the smooth circulation, precipitation and reuse of mud of the whole device are ensured.
The lower extreme inner chamber of steel pile casing 1 passes through back cover 9 and seals, and its purpose is shutoff steel pile casing 1 bottom space, ensures that mud can not permeate to steel pile casing 1's bottom in the circulation process, and the material thickness of back cover 9 can be according to steel pile casing 1 size, burial depth and the biggest mud storage volume of single steel pile casing 1 get 0.5m-2.0m, if find that mud volume loss is great in the use can suitably increase back cover 9 material thickness, ensures the better thick liquid ability of depositing of steel pile casing 1.
The roof 11 is installed to the upper end port of steel pile casing 1, the position that roof 11 corresponds with steel pile casing 1 port is provided with grid 13, the position that roof 11 corresponds with six groups of steel pile casings 1 upper end ports that the matrix distributes is provided with mounting groove 16, four corner positions of roof 11 are provided with mounting hole 25, roof 11 is fixed subaerial through the insertion cone of grafting in mounting hole 25, grid 13 installs in mounting groove 16, the lower extreme of grid 13 is provided with location lantern ring 15, the upper end screw fixation of grid 13 is on roof 11, location lantern ring 15 cup joints on the upper end port inner wall of steel pile casing 1, realize closing the protection to steel pile casing 1 upper end through setting up grid 13, avoid dropping, utilize the cooperation of location lantern ring 15, realize the accurate installation of grid 13.
The sediment separator 2 is located on the ground, the sediment separator 2 is provided with a discharge hole 3, a feed pipe 5 and a return pipe 4, the circulation assembly comprises six groups of communicating pipes 8 of steel casings 1 distributed in a communicating matrix and an opening and closing valve 6 positioned in the steel casings 1, the communicating pipes 8 positioned in a pair of steel casings 1 close to the sediment separator 2 are respectively communicated with the sediment separator 2 through the feed pipe 5 and the return pipe 4, one end of the opening and closing valve 6 is connected with the communicating pipes 8, and the lower end of the opening and closing valve 6 is connected with a suction pipe 20 extending to the upper end of a back cover 9.
The steel pile casing 1 is communicated with the mud separator 2 through the circulating assembly, so that the mud is filtered and separated, and then in the using process, the path of the mud flowing through the pipeline is controlled through the opening and closing valve 6, if the mud has more impurities in the practical implementation process, the mud needs to be filtered for multiple times, the quantity of the mud flowing through the pipeline and the steel pile casing 1 can be increased through the opening and closing valve 6, and the mud is filtered for multiple times to meet the mud protection wall performance; if the impurity in the slurry is less, the quantity of the filtered slurry flowing through the steel casing 1 can be properly reduced by opening and closing the valve 6, so that the slurry is ensured to meet the index requirement of reuse.
When the device is used, mud in the steel pile casing 1 is sucked into the mud separator 2 through the cooperation of the mud separator 2 and the feeding pipe 5, larger impurities are separated and filtered, and the mud flows back to the steel pile casing 1 through the return pipe 4 and is uniformly treated in the six groups of steel pile casings 1 distributed in a matrix through the communicating pipes 8 which are mutually communicated.
After the treatment is finished, the sucked mud is discharged through the discharge port 3 of the mud separator 2, and the transportation and the use of the mud are realized through a transportation device.
Example 2
On the basis of embodiment 1, in order to realize opening and close the convenient installation of valve 6, this application still has and is provided with installation inner loop 17 in the middle of the inner chamber of grid 13, seal through grid 14 between grid 13 and the installation inner loop 17, inlet pipe 5, back flow 4 run through installation inner loop 17 intercommunication silt separating centrifuge 2 and steel casing 1, the upper end of opening and close valve 6 is provided with pull rod 7, the upper end of pull rod 7 extends to installation inner loop 17, the upper end tip of pull rod 7 runs through installation inner loop 17, and pass through fixing bolt 12 fastening connection between the up end of pull rod 7 and installation inner loop 17.
The mounting inner ring 17 is arranged in the grille 13 to be matched with the pull rod 7, so that the purpose of conveniently mounting the opening and closing valve 6 is achieved.
Example 3
On the basis of embodiment 1, for the great impurity in the mud operation in-process causes the jam to the pipeline, this application still has and sets up chassis 21 at the lower extreme tip of inhaling material pipe 20, and the upper end of back cover 9 is provided with annular counter weight ring 10, and the centre of counter weight ring 10 is provided with the filtration inner ring 19 with one heart, and the crossbeam 24 fixed connection who leads to circumference array distribution between counter weight ring 10 and the filtration inner ring 19.
The upper end of filtering inner ring 19 is provided with multiunit connecting rod 23 that circumference array distributes, and connecting bolt 22 fixed connection chassis 21 is passed through to the upper end of connecting rod 23, and the clearance between the adjacent connecting rod 23 is less than the internal diameter of inhaling material pipe 20, thereby through setting up the position that the counter weight ring 10 prescribes a limit to inhaling material pipe 20, avoids inhaling material pipe 20 and causes the skew in the mud flow in-process, utilizes the connecting rod 23 that circumference array distributes to constitute the filter layer simultaneously for filter the impurity that is greater than inhaling material pipe 20 internal diameter, prevent to cause the jam.
Example 4
On the basis of embodiment 3, in order to be convenient for clear up steel pile casing 1 inner wall, this application still has the scraping ring 18 that is provided with conical cambered surface inner wall in the upper end of counter weight ring 10, and the outer wall of scraping ring 18 laminating steel pile casing 1's inner wall.
Through setting up the connection of inhaling material pipe 20 and counter weight ring 10 to at the in-process of dismantling the clearance, drive counter weight ring 10 through inhaling material pipe 20 and rise, through setting up scraping ring 18, at counter weight ring 10 in-process of rising, utilize scraping ring 18 to realize carrying out synchronous clearance to steel casing 1 inner wall, avoid the adhesion of mud.
The construction method realized by the fully-closed multistage sedimentation underground slurry pond device comprises the following steps of:
step one: calculating the maximum slurry amount in a drilling hole in the hole forming process according to the length, diameter and number of pile foundations, and calculating the number and embedding depth of the steel casing 1;
step two: forming holes through a hole forming machine, embedding the steel casing 1 and making a bottom sealing 9 at the bottom;
step three: preparing a communicating pipe 8 for entering according to the calculated number of the steel casings 1, reserving an inlet of the communicating pipe 8 at a position 500mm away from the top of the casing in advance when the steel casings 1 are manufactured, and making effective connection between the communicating pipe 8 and the steel casings 1 to prevent mud leakage;
step four: after the communicating pipe 8 is installed, the opening and closing valve 6 is closed, and in the use process, partial or all valves are opened and closed as required;
step five: after the installation of the communicating pipe 8 and the opening and closing valve 6 is completed, installing the top plate 11 and the grid 13 at the upper end port position of the steel casing 1, fixing the periphery of the top plate 11 with the ground by using expansion bolts, and fixing the grid 13 on the top plate 11 through a buckle;
step six: starting a drilling machine to perform pore-forming operation, and timely utilizing the sediment separator 2 and an outward transport vehicle to perform mud filtration, circulation, reuse and drill slag outward transport, wherein the whole mud circulation system is normally used;
step seven: after the pile foundation at the first position is formed, the drilling machine is shifted, the sediment separator 2 is shifted, the communicating pipe 8 is arranged, the valve 6 is opened and closed, the steps are repeated to form holes on the rest pile foundations until the pile foundations are formed, and the device is disassembled.
Wherein: the steel pile casing 1 is a temporary pile casing or a permanent pile casing for pile foundation construction, the pile casings are buried in advance before pile foundation construction, the hole wall stability in the pile foundation hole forming process is ensured, the communicating pipe 8 is a round metal pipeline connected between the steel pile casings 1, the communicating pipe 8 is made of a metal steel pipe or a hard plastic pipe, the communicating pipe 8 is in welded connection or sealed connection with the steel pile casings 1, the grid 13 is a steel grid, the back cover 9 is made of clay, powdery clay and other waterproof or weakly permeable materials, the purpose of the sealing device is to seal the bottom space of the steel pile casings, and the slurry is ensured not to permeate to the bottom of the steel pile casings 1 in the circulating process.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. A totally-enclosed multistage sedimentation underground slurry pond device is characterized in that: the mud pit device comprises:
six groups of steel pile casings (1) distributed in a matrix are pre-buried underground, the inner cavity of the lower end of each steel pile casing (1) is sealed through a bottom sealing plate (9), a top plate (11) is arranged at the port of the upper end of each steel pile casing (1), and a grid (13) is arranged at the position of each top plate (11) corresponding to the port of each steel pile casing (1);
the system comprises a sediment separator (2), wherein the sediment separator (2) is positioned on the ground, and a discharge hole (3), a feed pipe (5) and a return pipe (4) are arranged on the sediment separator (2);
the circulating assembly comprises communicating pipes (8) of six groups of steel casings (1) distributed in a communicating matrix and an opening and closing valve (6) positioned in the steel casings (1), the communicating pipes (8) positioned in the pair of steel casings (1) close to the sediment separator (2) are communicated with the sediment separator (2) through a feed pipe (5) and a return pipe (4) respectively, one end of the opening and closing valve (6) is connected with the communicating pipes (8), and the lower end of the opening and closing valve (6) is connected with a suction pipe (20) extending to the upper end of the back cover (9);
the lower extreme tip of inhaling material pipe (20) is provided with chassis (21), the upper end of back cover (9) is provided with annular counter weight ring (10), the centre of counter weight ring (10) is provided with concentrically and filters inner ring (19), cross beam (24) fixed connection who leads to circumference array distribution between counter weight ring (10) and the filtration inner ring (19), the upper end of filtration inner ring (19) is provided with multiunit connecting rod (23) that circumference array distributes, connecting bolt (22) fixed connection chassis (21) are passed through to the upper end of connecting rod (23), and the clearance between adjacent connecting rod (23) is less than the internal diameter of inhaling material pipe (20), the upper end of counter weight ring (10) is provided with scraping ring (18) of conical cambered surface inner wall, the inner wall laminating steel protective cylinder (1) of the outer wall of scraping ring (18).
2. A fully enclosed multi-stage settling subterranean mud pit apparatus as set forth in claim 1, wherein: an inner mounting ring (17) is arranged in the middle of an inner cavity of the grid (13), the grid (13) is sealed with the inner mounting ring (17) through a grid mesh (14), and the feeding pipe (5) and the return pipe (4) penetrate through the inner mounting ring (17) to be communicated with the sediment separator (2) and the steel casing (1).
3. A fully enclosed multi-stage settling subterranean mud pit apparatus as set forth in claim 2 wherein: the lower extreme of grid (13) is provided with location lantern ring (15), and the upper end screw fixation of grid (13) is on roof (11), location lantern ring (15) cup joints on the upper end port inner wall of steel casing (1).
4. A fully enclosed multi-stage settling subterranean mud pit apparatus according to claim 3, wherein: the novel steel pile cover is characterized in that mounting grooves (16) are formed in positions, corresponding to ports at the upper ends of six groups of steel pile covers (1) distributed in a matrix, of the top plate (11), mounting holes (25) are formed in four corner positions of the top plate (11), the top plate (11) is fixed on the ground through insertion cones inserted into the mounting holes (25), and the grids (13) are mounted in the mounting grooves (16).
5. A fully enclosed multi-stage settling subterranean mud pit apparatus as set forth in claim 1, wherein: the upper end of the opening and closing valve (6) is provided with a pull rod (7), the upper end of the pull rod (7) extends to the installation inner ring (17), the upper end part of the pull rod (7) penetrates through the installation inner ring (17), and the pull rod (7) is fixedly connected with the upper end face of the installation inner ring (17) through a fixing bolt (12).
6. A construction method implemented by the totally-enclosed multistage sedimentation underground slurry pond device according to any one of claims 1 to 5, characterized in that: the construction method comprises the following steps:
step one: calculating the maximum slurry amount in a drilling hole in the hole forming process according to the length, the diameter and the number of pile foundations, and calculating the number and the embedding depth of required steel casings (1);
step two: forming holes through a hole forming machine, embedding the steel casing (1) and making a bottom sealing (9) at the bottom;
step three: preparing a communicating pipe (8) for entering according to the calculated number of the steel casings (1), reserving a communicating pipe (8) access port at a position 500mm away from the top of the casings in advance when the steel casings (1) are manufactured, and effectively connecting the communicating pipe (8) with the steel casings (1) to prevent mud leakage;
step four: after the communicating pipe (8) is installed, the opening and closing valve (6) is closed, and in the use process, partial or all valves are opened and closed as required;
step five: after all the communicating pipes (8) and the opening and closing valves (6) are installed, installing a top plate (11) and a grid (13) at the upper end port position of the steel casing (1), fixing the periphery of the top plate (11) with the ground by using expansion bolts, and fixing the grid (13) on the top plate (11) through a buckle;
step six: starting a drilling machine to perform pore-forming operation, and timely utilizing a sediment separator (2) and an outward transport vehicle to perform mud filtration, circulation, reuse and drill slag outward transport, wherein the whole mud circulation system is normally used;
step seven: after the pile foundations at the first position are formed, the drilling machine is shifted, the sediment separator (2) is shifted, the communicating pipe (8) is arranged, the valve (6) is opened and closed, the steps are repeated to form holes on the rest pile foundations until all pile foundations are formed, and the device is disassembled.
7. A method of constructing a fully enclosed multi-stage settling subterranean slurry pond apparatus according to claim 6, wherein: the steel pile casing (1) is a temporary pile casing or a permanent pile casing for pile foundation construction, the pile casing is pre-buried before pile foundation construction, the hole wall stability in the pile foundation hole forming process is ensured, the communicating pipe (8) is a round metal pipe connected between the steel pile casings (1), the communicating pipe is made of metal steel pipes or hard plastic pipes, the communicating pipe (8) is welded with the steel pile casings (1) or is in sealing connection, the grid (13) is a steel grid, the back cover (9) is clay or powdery clay, the purpose of the sealing is to seal the bottom space of the steel pile casings, and the slurry is ensured not to permeate into the bottom of the steel pile casings (1) in the circulating process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210262269.1A CN114541993B (en) | 2022-03-17 | 2022-03-17 | Totally-enclosed multistage sedimentation underground slurry pond device and construction method |
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