CN116677331A - Application of integrated construction platform in construction of underwater pile foundation - Google Patents

Abstract

The invention discloses an application of an integrated construction platform in construction of a pile foundation in water, which comprises the following steps: starting a pulping device to prepare slurry, and conveying the slurry to a circulating pool; pumping mud in the circulating pool into the steel pile casing, starting the drilling machine, drilling under the protection of the mud, pumping the mud at the pile opening into the sedimentation tank, and separating the mud in the sedimentation tank by sedimentation and then entering the circulating pool; when the parameters of the slurry in the slurry circulation process do not meet the construction requirements, the slurry management system adjusts the slurry density, and the slurry is discharged to the circulation tank after reaching the construction requirements. The method can realize various application requirements of drilling operation, slurry circulation and slurry hardening and tempering management in the construction of the underwater pile foundation, and can effectively improve the quality stability of the underwater pile foundation by ensuring the slurry circulation flow and improving the slurry quality.

Description

Application of integrated construction platform in construction of underwater pile foundation

Technical Field

The invention relates to the technical field of underwater pile foundation construction, in particular to application of an integrated construction platform in underwater pile foundation construction.

Background

Since the establishment of new China, the construction of traffic infrastructure and hydraulic engineering in China has achieved remarkable achievement. Data statistics, by the end of 2020, the national highway bridge is 91.28 ten thousand seats and 6628.55 ten thousand linear meters, wherein the extra large bridge is 6444 seats, 1162.97 ten thousand linear meters and the large bridge is 119935 seats and 3277.77 ten thousand linear meters. Along with the rapid development of bridge construction, the improvement of the stability of bridge quality is also an important problem of industry attention.

The stability of the bridge quality is improved, the method is an essential important link for the construction research of the underwater pile foundation, and the slurry quality during drilling is not negligible for improving the construction quality of the underwater pile foundation. In the construction process of the underwater bored pile, in order to prevent phenomena such as reaming, hole collapse, necking and the like, the hole wall is kept stable, slurry is often required to be pressed in the drilling process, and the slurry pumped out of the pile hole is entrained with drilling slag at the bottom of the hole, so that the slurry cannot be directly recycled, and a slurry pool is required to be arranged on a construction site for slurry circulation. The current construction device for the underwater pier drilling pile is characterized in that a slurry pond is arranged on an underwater construction platform and is difficult to treat, a steel pile casing is adopted as the slurry pond in many projects, for example, the utility model patent of CN217105086U discloses a construction device for the underwater pier drilling pile, which comprises a working platform arranged in the water, at least one drilling pore-forming unit is arranged on the working platform, each drilling pore-forming unit comprises a drilling machine, a slurry pump, a working cylinder, at least one sedimentation cylinder and a circulating cylinder, which are sequentially connected through a slurry conveying pipe, wherein the working cylinder, the sedimentation cylinder and the circulating cylinder are all steel pile casings, the bottoms of which are connected with the working platform, are inserted into a river bed, the drill bit of the drilling machine is arranged in the working cylinder, the slurry pump is arranged in the circulating cylinder, and a slurry returning pipe connected with the slurry pump is arranged between the circulating cylinder and the working cylinder; the utility model has simple structure and easy construction, the steel casings on the working platform are divided into groups by arranging the conveying pipes, the steel casings in the groups are respectively used for drilling holes, mud precipitation and mud circulation, the occupation of the space of the platform can be reduced, the slag content of circulating mud can be ensured to a certain extent, but the mud flow of a mud pit is difficult to completely meet due to the small volume of the steel casings, the mud circulation effect is not ideal, the construction period is long, and the mud and drilling slag formed at the bottom of the steel casings are difficult to thoroughly remove due to the deep sinking of the circulating pit into the river bed, so that certain influence is caused to the river bed environment.

In addition, in the current pile foundation construction, the condition that the slurry density can not meet the requirement also often appears in the job site, leads to the problem that the slurry quality is poor, sand transporting effect is poor, the dado is poor, and then causes the hole that collapses easily, seriously influences construction progress and pile foundation quality.

In conclusion, how to improve the circulating slurry quality of the underwater pile foundation construction and further improve the quality stability of the underwater pile foundation becomes a problem to be solved urgently.

Disclosure of Invention

The invention discloses application of an integrated construction platform in construction of a pile foundation in water, which can realize various application requirements of drilling operation, slurry circulation and slurry hardening and tempering management in construction of the pile foundation in water, and can effectively improve the quality stability of the pile foundation in water by ensuring the slurry circulation flow and improving the slurry quality.

In order to achieve the above purpose, the technical scheme of the invention is as follows:

the application of the integrated construction platform in the construction of the underwater pile foundation comprises a first steel platform, a sedimentation tank, a circulating tank and a slurry management system, wherein the sedimentation tank and the circulating tank are arranged in a space below a first panel of the first steel platform, and the slurry management system is arranged on the first panel;

the mud management system comprises a pulping device, a pulping pipe, a first pulp feeding pipe, a sand separating device, a second pulp feeding pipe and an online densimeter, wherein: an inlet of the first slurry feeding pipe is connected with an outlet of the slurry making device; the slurry inlet pipe is used for introducing slurry with drilling slag extracted from a sedimentation tank or a pile hole into the sand separating device; the online densimeter is arranged on the pulp inlet pipe; the sand separating device is connected with the outlet of the slurry inlet pipe and is used for primarily screening the slurry with drilling slag introduced from the slurry inlet pipe to separate out silt and slurry; the inlet of the second slurry conveying pipe is connected with the slurry outlet of the sand separating device, the outlet extends into the circulating pool, and a slurry adjusting hole is arranged and connected with the outlet of the first slurry conveying pipe;

The application comprises the following steps:

starting a pulping device to prepare slurry, and conveying the slurry to a circulating pool through a first slurry conveying pipe and a second slurry conveying pipe after the slurry is prepared;

the first slurry pump of the circulating pool pumps the slurry into the steel casing, the drilling machine is started, the slurry is drilled under the protection of the slurry, meanwhile, the second slurry pump of the pile opening pumps the slurry into the sedimentation pool, and the slurry in the sedimentation pool enters the circulating pool after sedimentation and separation;

when the slurry entering the circulating tank from the sedimentation tank can meet the slurry construction requirement, closing the pulping device;

when the parameters of the slurry in the slurry circulating process do not meet the construction requirements, the slurry pumped by the second slurry pump or the slurry in the sedimentation tank is introduced into the sand separating device, separated by the sand separating device, enters the second slurry feeding pipe, and the slurry preparing device is selectively started or not started according to the slurry density detected by the on-line densimeter, and if the slurry preparing device is started, the slurry prepared by the slurry preparing device also enters the second slurry feeding pipe, is mixed with the slurry separated by the sand separating device, and is discharged to the circulating tank.

Further, when the hole is cleaned, the slurry pumped by the second slurry pump is introduced into the sand separating device, or the slurry in the sedimentation tank is introduced into the sand separating device, the slurry is separated by the sand separating device, and the separated slurry is transported to the bottom of the hole through the second slurry conveying pipe for slurry circulation and deslagging.

Further, the integrated construction platform also comprises a mud purifying system, wherein the mud purifying system comprises a dosing treatment device, a purifying and precipitating device, a pipeline spiral mixing device, a filter pressing separation device, a clean water tank and a buffer tank, the inlet of the dosing treatment device is connected with a mud outlet of the sand separating device, and the outlet is connected with the inlet of the purifying and precipitating device; a sediment outlet at the lower part of the purification and sedimentation device is connected with an inlet of the pipeline spiral mixing device, and a clear water overflow port at the upper part of the purification and sedimentation device is connected with an inlet of the clear water tank; the outlet of the pipeline spiral mixing device is connected with the inlet of the filter pressing separation device; the filtrate outlet of the filter pressing separation device is connected with the inlet of the buffer tank;

before pile foundation pouring, pumping slurry of a sedimentation tank into a sand separating device, adding flocculant into the separated slurry through a chemical adding treatment device, then entering a purifying sedimentation device to separate clear water and sediment, enabling the clear water to enter a clear water tank for recycling or directly discharging, pumping the sediment into a pipeline spiral mixing device to mix medicines, enabling the mixed sediment to enter a filter pressing separation device, separating mud cakes and sewage through the filter pressing separation device, and enabling the sewage to flow into a buffer tank; and after the slurry treatment in the sedimentation tank is finished, the space can be reserved for storing surplus slurry during pile foundation pouring.

Further, the first steel platform comprises a first upright post, a first transverse connection, a first distribution beam, a first longitudinal beam, a first cross beam and a first panel, wherein the first upright post and the first transverse connection enclose a square body, the top of the first upright post is vertically connected with the first distribution beam along a transverse interval, the top of the first distribution beam is vertically connected with the first longitudinal beam along a longitudinal interval, the top of the first longitudinal beam is vertically connected with the first cross beam along a transverse interval, and the top of the first cross beam supports the first panel;

the circulating pool and the sedimentation pool are arranged on the first cross joint; the tops are communicated through a mud chute or a mud pool circulating pipeline;

the first panel comprises an assembled panel and a fixed panel, the circulating tank and/or the position of the area above the sedimentation tank, where the first panel is correspondingly installed, is set as a detachable assembled panel, and the rest position is a fixed panel.

Still further, assembled panel passes through U type bolt, gasket and nut to be connected, the vertical through-hole that wears to be equipped with of assembled panel, U type bolt both ends pass the through-hole of assembled panel, the gasket inserts U type bolt's both ends from below and block under the first crossbeam/the first longeron, the nut is twisted U type bolt's both ends are realized the fixation of assembled panel.

Further, when the drilling slag in the sedimentation tank reaches half, the assembled panel is removed and lifted to the outer side of the platform through the crane so as to expose the sedimentation tank, the drilling slag precipitated in the sedimentation tank is stirred and scattered, the slurry management system is started, the slurry and the drilling slag in the sedimentation tank are pumped out, and the drilling slag is separated through the sand separating device.

Further, the integrated construction platform further comprises a second steel platform, and the second steel platform is vertically connected to one side of the first steel platform; the second steel platform comprises a second upright post, a second transverse connection, a second distribution beam, a second longitudinal beam, a second cross beam and a second panel, wherein the second upright post and the second transverse connection are enclosed to form a cube, the top of the first upright post is vertically connected with the second distribution beam along a longitudinal interval, the top of the second distribution beam is vertically connected with the second longitudinal beam along a transverse interval, the top of the second longitudinal beam is vertically connected with the second cross beam along a longitudinal interval, and the top of the second cross beam is supported with the second panel.

Further, the sedimentation tank with the circulation tank all adopts assembled mud pit, the mud pit includes die block, side form, mixing system and ends thick liquid mechanism, wherein: the bottom die is circular; the side die at least comprises two side die units which are transversely spliced together to form a cylinder, and the bottom of the side die is connected with the bottom die to form a mud pit body; the stirring system comprises a stirrer and a stirring supporting mechanism, the stirring supporting mechanism is detachably connected with the top of the side die, the upper part of the stirrer is connected with the stirring supporting mechanism, and the lower part of the stirrer stretches into the mud pit body; the grout stopping mechanism comprises a grout stopping plate, a grout stopping sealing plate and a grout stopping stiffening plate, wherein the grout stopping plate is annular, the lower surface of the grout stopping plate is connected with the bottom die, the outer diameter of the grout stopping plate is matched with the inner diameter of the side die, a plurality of triangular grout stopping stiffening plates are arranged on the inner wall at intervals, the lower surface of the grout stopping stiffening plate is connected with the bottom die, the inner side surface of the grout stopping stiffening plate is connected with the annular grout stopping sealing plate, and the grout stopping sealing plate shields the space formed by the grout stopping stiffening plate, the grout stopping plate and the bottom die.

Further, the bottom die comprises a bottom die body and bottom die reinforcing ribs, wherein the bottom die body is circular, and a plurality of bottom die reinforcing ribs are connected to the lower surface of the bottom die body at intervals; bottom die reinforcing ribs are vertically connected between the bottom die reinforcing ribs at intervals;

the side die unit comprises a side die unit body, a hoop and side die reinforcing ribs, wherein the transverse section of the side die unit body is arc-shaped, a plurality of vertically arranged side die reinforcing ribs are connected to the outer wall at intervals, and side die unit connecting plates are arranged on two sides of the outer wall; the outer side of the side die reinforcing rib is connected with an arc-shaped hoop which is transversely arranged, and hoop connecting plates are also arranged at two ends of the hoop; the side die unit connecting plates of the adjacent side die units and the hoop connecting plates are screwed together through the side die connecting pieces to enclose the side die.

Further, the sand separating device comprises a cyclone, a first-stage screen and a second-stage screen, wherein the lower part of the cyclone is provided with the first-stage screen and the second-stage screen at intervals, and the aperture of the first-stage screen is larger than that of the second-stage screen; a vibrating motor is arranged on the first-stage screen mesh and/or the second-stage screen mesh; one side of the primary screen is provided with a primary slag outlet, and the primary slag outlet is obliquely upwards arranged along the slag discharging direction; one side of the secondary screen is provided with a secondary slag outlet, and the secondary slag outlet is obliquely upwards arranged along the slag outlet direction.

The integrated construction platform can meet various application requirements of drilling operation, slurry circulation, slurry hardening and tempering management and slurry purification in the construction of the underwater pile foundation, and has the following advantages:

(1) According to the integrated construction platform, the space below the first panel is used for placing and utilizing the sedimentation tank and the circulating tank, so that the occupation of the working space on the top surface of the platform is reduced, the sedimentation tank and the circulating tank can be reasonably arranged according to the circulating slurry requirement of drilling, and the slurry circulation requirement of pile foundation construction in water is met.

(2) Due to the arrangement of the slurry management system, when the circulating slurry is insufficient or the density does not meet the requirement, the integrated construction platform can perform pulping and slurry density adjustment treatment, so that the circulating slurry quality is higher, the integrated construction platform can effectively improve the quality of a pile foundation, accelerate the drilling speed of the pile foundation, reduce the hole cleaning time and facilitate slag cleaning when being applied to the drilling construction of a pile foundation in water.

(3) The integrated construction platform provided by the invention has the advantages that due to the arrangement of the slurry management system, drilling slag and silt can be quickly separated when the integrated construction platform is applied to the hole cleaning construction of the pile foundation in water, the hole cleaning speed can be improved, and the operation efficiency can be improved.

(4) The integrated construction platform provided by the invention has the advantages that as the slurry purification system is arranged, when the integrated construction platform is applied to Shui Zhongzhuang foundation construction, slurry in the sedimentation tank can be treated, so that water can reach the standard and be discharged into water after the slurry is treated, the environment is protected, meanwhile, the sedimentation tank is also emptied, and a space is reserved for storing redundant slurry during pile foundation pouring.

Drawings

Fig. 1 is a schematic top view of the present utility model (the first panel, the first cross member, the first side member, the first distribution beam, the second panel, the second cross member, the second side member, and the second distribution beam are omitted).

FIG. 2 is a schematic view of the structure of section A-A in FIG. 1.

Fig. 3 is a schematic view of the structure of section B-B in fig. 1.

Fig. 4 is a schematic top view enlarged structure of pile hole, sedimentation tank and circulating tank.

Fig. 5 is a schematic diagram of a front view enlarged structure of pile hole, sedimentation tank and circulation tank.

FIG. 6 is a schematic cross-sectional structural view of the mud pit taken along the axial direction of the side mold.

Fig. 7 is a schematic bottom view of the slurry tank (bottom die omitted).

Fig. 8 is a schematic diagram of the front view structure of the side mold.

Fig. 9 is a schematic bottom view of the bottom die.

Fig. 10 is a schematic diagram of the construction of a mud management system and a mud cleaning system.

Fig. 11 is a schematic perspective view of a sand separating apparatus.

In the figure, a first upright 1, a first cross member 2, a second cross member 3, a second upright 4, a circulating pond 5, a sedimentation pond 6, a pile hole 7, a first cross member 8, a first longitudinal beam 9, an assembled panel 10, a second slurry pump 11, a slurry chute 12, a first slurry pump 13, a first distribution beam 14, a fixed panel 15, a second cross member 16, a second panel 17, a screw pump 18, a second longitudinal beam 19, a second distribution beam 20, an online densitometer 21, a stirring system 22, a stirrer 2201, a stirring support beam 2202, a side mold 23, a hoop 2301, a side mold unit body 2302, a side mold reinforcing rib 2303, a side mold unit connection plate 2304, the device comprises a hoop connecting plate 2305, a slurry hole 2306, a slurry stopping mechanism 24, a slurry stopping sealing plate 2401, a slurry stopping plate 2402, a slurry stopping stiffening plate 2403, a bottom die 25, a bottom die body 2501, a bottom die beam 2502, a bottom die reinforcing rib 2503, a bottom die reinforcing rib 2504, a third slurry pump 26, a sand separating device 27, a cyclone 2701, a first-stage screen 2702, a second-stage slag hole 2703, a second-stage screen 2704, a first-stage slag hole 2705, a filter pressing separating device 28, a fourth slurry pump 29, a slurry preparing device 30, a chemical adding processing device 31, a buffer tank 32, a first-stage sedimentation tank 33, a second-stage sedimentation tank 34, a clean water tank 35, a slurry pump 36 and a pipeline spiral mixing device 37.

Description of the embodiments

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. It will be apparent that the described embodiments are only some, but not all, embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

In the description of the present application, it should be noted that, the azimuth or positional relationship indicated by the terms "upper", "lower", etc. are based on the azimuth or positional relationship shown in the drawings, or the azimuth or positional relationship that the present application conventionally places when used, are merely for convenience of describing the present application and simplifying the description, and are not indicative or implying that the apparatus or element to be referred must have a specific azimuth, be configured and operated in a specific azimuth, and therefore, should not be construed as limiting the present application.

In the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.

The application of the integrated construction platform in the construction of the underwater pile foundation is shown in fig. 1-5, wherein the integrated construction platform comprises a first steel platform, a sedimentation tank 6, a circulating tank 5 and a slurry management system, the sedimentation tank 6 and the circulating tank 5 are arranged in the space below a first panel of the first steel platform, and the slurry management system is arranged on the first panel;

referring to fig. 10, the slurry management system includes a slurry making device 30, a slurry inlet pipe, a first slurry feeding pipe, a sand separating device 27, a second slurry feeding pipe, and an in-line densitometer 21, wherein: a first slurry feed pipe, the inlet of which is connected with the outlet of the slurry making device 30; the slurry inlet pipe is used for introducing the slurry with the drilling slag extracted from the sedimentation tank 6 or the pile hole 7 into the sand separating device 27, a third slurry pump 26 can be arranged at the sedimentation tank 6 for extracting the slurry with the drilling slag if the slurry with the drilling slag is extracted from the sedimentation tank 6, a second slurry pump 11 at the pile hole can be used for extracting the slurry with the drilling slag if the slurry with the drilling slag is directly extracted from the pile hole 7, a tee joint can be arranged at the inlet of the slurry inlet pipe, one valve is connected with a pipeline from the pile hole 7, and the other valve is connected with the pipeline from the sedimentation tank 6; the on-line densimeter 21 is arranged on the slurry inlet pipe and is used for measuring the density of slurry entering the sand separating device 27, and if the on-line densimeter 21 tests that the density of the slurry is qualified, the on-line densimeter 21 indicates that the quenching and tempering treatment of the slurry is qualified before; the sand separating device 27 is connected with the outlet of the slurry inlet pipe and is used for primarily screening the slurry with drilling slag introduced by the slurry inlet pipe, separating out mud sand and slurry, namely, pumping the slurry into the inlet of the sand separating device 27 from the sedimentation tank 6 or the pile hole 7, and separating the mud sand and the slurry by the sand separating device 27; the inlet of the second slurry feeding pipe is connected with the outlet of the sand separating device 27, the outlet extends into the circulating pool 5, and a slurry adjusting hole is arranged and connected with the outlet of the first slurry feeding pipe; the pulping device 30 and the sand separating device 27 are preferably arranged on a platform base, so that the pulping device and the sand separating device can be conveniently and directly lifted to a first steel platform for use. The outlet of the sand separating device 27 is preferably provided with a fourth slurry pump 29, the outlet of the fourth slurry pump 29 is used as a slurry outlet of the sand separating device 27 to be connected with the inlet of the second slurry conveying pipe, and the slurry separated from drilling residues is pumped into the second slurry conveying pipe through the fourth slurry pump 29, so that the recycling of the slurry is realized. The bottom of the pulping device 30 is connected with a first pulp feeding pipe through a screw pump 18, namely, the outlet of the pulping device 30 is connected with the screw pump 18, and mud is pumped into the first pulp feeding pipe through the screw pump 18 and then enters a second pulp feeding pipe through the first pulp feeding pipe.

The following application of the drilling process comprises the following steps:

the pulping device 30 is started to prepare slurry, and the slurry is conveyed to the circulating pool 5 through the first slurry conveying pipe and the second slurry conveying pipe after the preparation is finished.

The first slurry pump 13 of the circulating tank 5 pumps slurry into the steel casing, the drilling machine is started, drilling is performed under the protection of the slurry, meanwhile, the second slurry pump 11 with the pile hole 7 at the pile opening pumps the slurry into the sedimentation tank 6, and the slurry in the sedimentation tank 6 enters the circulating tank 5 after sedimentation and separation.

When the slurry entering the circulation tank 5 from the sedimentation tank 6 can meet the slurry construction requirements, the pulping device 30 is turned off.

When the parameters of the slurry in the slurry circulation process do not meet the construction requirements, the slurry pumped by the second slurry pump 11 is introduced into the sand separating device 27, or the slurry in the sedimentation tank 6 is introduced into the sand separating device 27, separated slurry enters the second slurry feeding pipe, the slurry preparing device 30 is selectively started or not started according to the slurry density detected by the on-line densimeter, and if the slurry preparing device is started, the slurry prepared by the slurry preparing device 30 also enters the second slurry feeding pipe, is mixed with the slurry separated by the sand separating device 27, and is discharged to the circulating tank 5. The specific start-up or non-start-up of the pulping device 30 is based on: the on-line densitometer 21 monitors the density of the slurry fed into the sand separating device 27 in real time, when the density of the slurry is low or high, the slurry with high density or low density is prepared by the slurry preparing device 30 to be used as a raw material for improving the density of the slurry or reducing the density of the slurry, the slurry prepared by the slurry preparing device 30 enters the second slurry feeding pipe from the slurry adjusting hole to be mixed with the slurry fed from the sand separating device 27, the density of the slurry entering the circulating pool 5 is adjusted, in addition, if the slurry is required to be supplemented in the drilling process, the liquid level of the slurry in the pile hole 7 is ensured, and the normal density slurry prepared by the slurry preparing device 30 can be introduced.

Further, the application of the hole cleaning method comprises the following steps: the slurry pumped by the second slurry pump 11 is introduced into the sand separating device 27, or the slurry in the sedimentation tank 6 is introduced into the sand separating device 27, and separated by the sand separating device 27, and the separated slurry is transported to the bottom of the pile hole 7 through the second slurry conveying pipe for slurry circulation and deslagging. The sand separating device 27 separates drilling slag and silt, so that the sand content of the slurry conveyed to the bottom of the hole is greatly reduced, and the hole cleaning speed can be better improved.

Further, the integrated construction platform is further improved in function, and the integrated construction platform further comprises a slurry purification system, as shown in fig. 10, wherein the slurry purification system comprises a dosing treatment device 31, a purification precipitation device, a pipeline spiral mixing device 37, a filter pressing separation device 28, a clean water tank 35 and a buffer tank 32, an inlet of the dosing treatment device 31 is connected with a slurry outlet of the sand separation device 27, and an outlet of the dosing treatment device is connected with an inlet of the purification precipitation device; the sediment outlet at the lower part of the purification and sedimentation device is connected with the inlet of the pipeline spiral mixing device 37, and the clear water overflow port at the upper part is connected with the inlet of the clear water tank 35; the outlet of the pipeline spiral mixing device 37 is connected with the inlet of the filter pressing separation device 28; the filtrate outlet of the filter-press separator 28 is connected to the inlet of the buffer tank 32, and the filter-press separator 28 is typically a filter press, and the mud cake separated by the filter press can be directly landfilled or transported to a place where necessary. Wherein, for the mud outlet of sand separator 27, it is connected with dosing processing apparatus 31 and fourth slush pump 29 respectively, and the pipeline department of connection is provided with the valve respectively, when needs start mud clean system, then opens the valve of the pipeline of sand separator 27 and dosing processing apparatus 31, when needs start mud management system, then opens the valve of the pipeline of sand separator 27 and fourth slush pump 29.

Before pile foundation pouring, pumping slurry of a sedimentation tank 6 into a sand separating device 27, adding flocculant into the separated slurry through a dosing treatment device 31, then entering a purifying sedimentation device to separate clear water and sediment, enabling the clear water to flow out of the upper part of the purifying sedimentation device, entering a clear water tank 35 to wait for recycling or directly discharging, discharging the sediment from the bottom of the purifying sedimentation device, pumping the sediment into a pipeline spiral mixing device 37 to mix medicines, enabling the mixed sediment to enter a filter pressing separation device 28, separating mud cakes and sewage by the filter pressing separation device 28, and enabling the sewage to flow into a buffer tank 32; and after the slurry treatment in the sedimentation tank 6 is finished, the space can be reserved for storing surplus slurry during pile foundation pouring.

In this embodiment, when the flocculant is added to the chemical adding apparatus 31, it is preferable to mix the flocculant with stirring, and the chemical adding stirrer is a shearing-free stirrer which performs shearing-free stirring at a low speed, so that the flocculate is prevented from being destroyed. The purifying and precipitating device comprises a first-stage precipitating tank 33 and a second-stage precipitating tank 34, wherein an inlet of the first-stage precipitating tank 33 is arranged at the lower part and is connected with an outlet of the dosing treatment device; the inlet of the secondary sedimentation tank 34 is also arranged at the lower part and is connected with a clear water overflow port at the upper part of the primary sedimentation tank 33, and the clear water overflow port of the secondary sedimentation tank 34 is connected with the inlet of the clear water tank 8. The mixed slurry is fully mixed with the first medicament before flowing into the primary sedimentation tank 33, and after flowing into the primary sedimentation tank 33, the slurry is flocculated and quickly precipitated, mud and water are separated, the slurry is precipitated at the bottom of the primary sedimentation tank 33, water overflows from a clear water overflow port at the upper part to enter the secondary sedimentation tank 34, and similarly, the slurry is precipitated at the bottom of the secondary sedimentation tank 34 for the secondary sedimentation tank 34, and water flows out from the clear water overflow port at the upper part to enter the clear water tank. The inlets of the primary sedimentation tank 33 and the secondary sedimentation tank 34 are arranged at the lower part, so that the upper clean water can not be damaged when mud enters, and mud can be well sedimented. The bottom outlets of the primary sedimentation tank 33 and the secondary sedimentation tank 34 are connected with the inlet of a slurry pump 36, and the outlet of the slurry pump 36 is connected with the inlet of a pipeline spiral mixing device 37. When the mud layer thickness in the first-stage sedimentation tank 33 and the second-stage sedimentation tank 34 reaches a certain position, the valves at the bottom outlets of the first-stage sedimentation tank 33 and the second-stage sedimentation tank 34 can be opened, and then the pumped mud is pumped out through the slurry pump 36 and enters the pipeline spiral mixing device 37, and as the mud passes through the slurry pump, the flocculation effect can be scattered, so that the pipeline spiral mixing device 37 is required to be arranged for secondary dosing treatment, and the added second medicament, namely the flocculant, is used for improving the flocculation effect of the mud.

Further, the present embodiment provides a preferable first steel platform structure, the first steel platform includes a first upright 1, a first cross member 2, a first distribution beam 14, a first longitudinal beam 9, a first cross beam 8 and a first panel, the first upright 1 and the first cross member 2 enclose a cube, the top of the first upright 1 is vertically connected with the first distribution beam 14 along a transverse interval, the top of the first distribution beam 14 is vertically connected with the first longitudinal beam 9 along a longitudinal interval, the top of the first longitudinal beam 9 is vertically connected with the first cross beam 8 along a transverse interval, and the top of the first cross beam 8 supports the first panel; the circulating pool 5 and the sedimentation pool 6 are arranged above the first transverse connection 2, and the tops are communicated through a mud chute 12 or a mud pool circulating pipeline; with reference to fig. 3, the height of the mud pit body is lower than that of the first longitudinal beam 9, so that the installation of the first longitudinal beam 9 is prevented from being influenced; the first cross-over connection 2 is generally arranged at the position 1.8-2.5m below the top of the first upright 1, and provides enough placement space for the installation of the assembled mud pit. The second slurry pump 11 is arranged in the pile hole 7, the slurry pumped by the second slurry pump 11 from the pile hole 7 is sent into the sedimentation tank 6 through a slurry pipe, after the drilling slag and the sand are precipitated in the sedimentation tank 6, the slurry flows into the circulating tank 5 through a slurry tank circulating pipe or a slurry chute, the slurry in the circulating tank 5 is pumped out by the first slurry pump 13, and is pumped into the drilling position of the pile machine through the slurry pipe for carrying the drilling slag. The number of the circulating tanks 7 and the sedimentation tanks 5 can be selected according to the actual circulating mud volume; as shown in fig. 4 and 5, this embodiment is provided with 4 circulation tanks 5, 2 sedimentation tanks 6, and 2 circulation tanks 5 are matched with each 1 sedimentation tank 6. In this embodiment, the first upright 1 is made of steel pipes, the first distribution beam 14 is made of double-spliced i-steel, the first longitudinal beam 9 is made of beret sheets, the first transverse beam 8 is made of i-steel, and the first panel is made of patterned steel plates. For the connection of the first upright 1 and the first transverse link 2, the connection of the first upright and the first distribution beam 14, the connection of the first distribution beam 14 and the first longitudinal beam 9, and the connection of the first longitudinal beam 9 and the first distribution beam 14, the connection is more stable by adopting a traditional welding mode, and of course, the connection can also be realized by adopting a bolt connection under special conditions.

The first panel comprises an assembled panel 10 and a fixed panel 15, wherein the position of the area above the circulating tank 5 and the sedimentation tank 6, corresponding to the first panel, is provided with the assembled panel 10 which is detachable, and the position of the remaining area is provided with the fixed panel 15. Above the circulation tank 5 and the sedimentation tank 6, a fitting-type panel 10 is provided, which can be easily removed if necessary, to perform an operation treatment on the circulation tank 5 and/or the sedimentation tank 6. Wherein the first cross member 8 may not be provided below the position of the assembled panel 10, i.e. in the state shown in fig. 5. So as to facilitate the removal of the circulation tank 5 or the sedimentation tank 6, and the panel beam can be welded under the fabricated panel 10 to improve the supporting strength of the fabricated panel 10. Of course, the first panel also needs to leave a drilling operation space, so that a constructor stands on the first panel to perform a drilling operation, which is a conventional operation in the field and is not described herein. The first steel platform can be used as a working platform for drilling construction and provides a placing space and support for the circulating tank 5 and the sedimentation tank 6. The circulating tank 5 and the sedimentation tank 6 are installed, a mud circulating system is formed by the circulating tank 5 and the first mud pump 13 and the second mud pump 11, the sedimentation tank 6 is used for precipitating drilling slag, the first mud pump 13 is arranged in the circulating tank 5, the first mud pump 13 is used for pumping mud into the pile hole 7, the second mud pump 11 is arranged in the pile hole 7, and mud pumped by the second mud pump 11 from the pile hole 7 can be sent into the sedimentation tank 6 or the sand separating device 27 for treatment. The circulating tank 7 and the sedimentation tank 5 are not arranged on the panel, so that the space is relatively free from limitation, the volume requirement of mud circulation can be better met, and the mud circulation flow is ensured.

Still further, this embodiment provides a connection structure of assembled panel 10 convenient to install and demolish, and assembled panel 10 passes through U type bolt, gasket and nut connection, and assembled panel 10 vertically wears to be equipped with the through-hole, and U type bolt both ends pass assembled panel 10's through-hole, and the gasket inserts U type bolt's both ends from below and blocks under first crossbeam 8 or first longeron 9, and the nut screws in the both ends of U type bolt and realizes assembled panel 10's fixed. In this embodiment, the spacer is clamped under the first longitudinal beam 9, and the first longitudinal beam 9 is a beret sheet, and the spacer is specifically disposed under the upper chord. If the first cross member 8 is not provided under the assembled panel 10, both ends of the U-bolts are caught under the first side member 9. Further, when the assembled panel 10 is arranged and drill slag needs to be cleaned, if the drill slag of the sedimentation tank 6 reaches half, the assembled panel 10 is removed and lifted to the outer side of the platform through a crane so as to expose the sedimentation tank 6, the drill slag precipitated in the sedimentation tank 6 is stirred and scattered, a slurry management system is started, the slurry and the drill slag of the sedimentation tank 6 are pumped out, the drill slag is separated through a sand separating device 27, and the separated drill slag can be transported to a sand and gravel field by an agricultural vehicle to serve as raw materials of sand and gravel.

Furthermore, in order to facilitate placement of tools and equipment necessary for bored pile construction, the integrated construction platform of the embodiment further comprises a second steel platform, wherein the second steel platform is vertically connected to one side of the first steel platform, so that occupation of a channel in the length direction is reduced; the second steel platform comprises a second upright 4, a second transverse connection 3, a second distribution beam 20, a second longitudinal beam 19, a second cross beam 16 and a second panel 17, wherein the second upright 4 and the second transverse connection 3 are enclosed to form a square, the top of the first upright 1 is vertically connected with the second distribution beam 20 along a longitudinal interval, the top of the second distribution beam 20 is vertically connected with the second longitudinal beam 19 along a transverse interval, the top of the second longitudinal beam 19 is vertically connected with the second cross beam 16 along a longitudinal interval, and the top of the second cross beam 16 is supported with the second panel 17. The second upright post 4 is made of steel pipes, the first distribution beam 14 is made of double-spliced I-steel, the second panel 17 is made of patterned steel plates, the second longitudinal beam 19 is made of bailey pieces, and the second cross beam 16 is made of I-steel; the structure is similar to the first steel platform but is perpendicular relative to the first steel platform. The first panel and the second panel 17 are spliced together to prevent falling events from occurring when construction personnel construct the panel; for the connection of the second upright 4 and the second transverse link 3, the connection of the second upright 4 and the second distribution beam 20, the connection of the second distribution beam 20 and the second longitudinal beam 19, the connection of the second longitudinal beam 19 and the second transverse beam 16, and the connection of the second transverse beam 16 and the second panel 17, the connection is more stable by adopting a traditional welding mode, and of course, the connection can also be adopted by adopting a bolt connection under special conditions.

Further, the sedimentation tank 6 and the circulation tank 5 are assembled mud tanks, wherein: the bottom die 25 is circular; the side mold 23 at least comprises two side mold units, the side mold units are transversely spliced together to form a cylinder, the bottom of the side mold units is connected with the bottom mold 25 to form a mud pit body, namely, the position of the mud pit body is lower than that of the first longitudinal beam 9, the side mold is formed by splicing the side mold units, the side mold units can be conveniently transported and stored when not used, the general side mold units are carved into the same size so as to be convenient to manufacture, if one side mold 23 is formed by splicing two side mold units, the section of each side mold unit is semicircular arc, and the like. The stirring system 22 comprises a stirrer 2201 and a stirring supporting mechanism, wherein the stirring supporting mechanism is detachably connected with the top of the side die 23, the upper part of the stirrer 2201 is connected with the stirring supporting mechanism, the lower part of the stirrer extends into the mud pit body, the stirring supporting mechanism provides a supporting foundation for the stirrer 2201, the stirrer 2201 is additionally arranged, the stirrer 2201 can stir in the mud pit body, and when the stirrer is used as the circulating pit 5, mud precipitation of the circulating pit can be reduced, and the mud proportion is prevented from being too small. The grout stopping mechanism 24 comprises a grout stopping plate 2402, a grout stopping sealing plate 2401 and a grout stopping stiffening plate 2403, wherein the grout stopping plate 2402 is annular, the lower surface of the grout stopping plate 2402 is connected with the bottom die 25, the outer diameter of the grout stopping plate is matched with the inner diameter of the side die 23, and after the grout stopping plate 2402 is tightly attached to the inner side of the inner wall of the side die 23; a plurality of triangular slurry-stopping stiffening plates 2403 are arranged on the inner wall at intervals, the lower surface of each slurry-stopping stiffening plate 2403 is connected with the bottom die 25, the inner side surface of each slurry-stopping stiffening plate 2401 is connected with an annular slurry-stopping sealing plate 2401, the slurry-stopping stiffening plates 2403 are right-angled triangles, one right-angle side is connected with the bottom die 25, and the other right-angle side is connected with the slurry-stopping plate 2402; the slurry stopping sealing plate 2401 shields the space surrounded by the slurry stopping stiffening plate 2403, the slurry stopping plate 2402 and the bottom die 25, namely, the slurry stopping sealing plate 2401 is a round table side surface with a smaller lower part and a larger upper part, the lower edge is propped against the bottom die, and the upper edge is propped against the slurry stopping plate 2402, so that the gap between the slurry stopping stiffening plates 2403 is shielded, sand and stone are prevented from being deposited between the slurry stopping stiffening plates 2403, and cleaning is difficult. The grout stop mechanism 24 may provide vertical support for the side forms 23 and the grout while preventing the grout from leaking out of the junction of the side forms 23 and the bottom form 25. The grout stop plate 2402, the grout stop seal plate 2401 and the grout stop stiffening plate 2403 are all made of steel plates, and the steel plates can be selected to have different thicknesses according to requirements, such as 6mm steel plates. The assembled mud pit is adopted as the circulating pit 5 and the sedimentation pit 6, the bottom die and the side die can be assembled on the bank, and then lifted to the platform for installation, so that the operation is convenient and the construction period is effectively shortened; meanwhile, all parts of the assembled mud pit can be transferred to other projects for use after being disassembled, so that the assembled mud pit is convenient to transport, and the material cost is saved. In addition, the mud pit of this embodiment is circular structure, compares with traditional rectangle integral mud pit, changes mud lateral pressure into axial tension, need not to set up the top pull rod, can reduce the component cross-section size relatively when the same volume requirement, reduces the waste of material.

Still further, as shown in fig. 10, the bottom mold 25 includes a bottom mold body 2501 and a bottom mold reinforcing rib 2503, the bottom mold body 2501 is circular, a plurality of bottom mold reinforcing ribs 2503 are connected to the bottom surface of the bottom mold body 2501 at intervals, the bottom mold body 2501 is a base structure of the bottom mold 25, the bottom mold reinforcing ribs 2503 are used for reinforcing the supporting strength of the bottom mold 25, the bottom mold body 2501 can select steel plates with different thicknesses, such as 6mm steel plates, according to the weight requirement of bearing slurry, the bottom mold reinforcing ribs 2503 can be made of channel steel, the bottom mold 25 has higher requirement on strength, and 16# channel steel can be selected. The bottom die reinforcing ribs 2503 are further vertically connected with bottom die reinforcing ribs 2504 at intervals, namely, as shown in fig. 7 and 10, the bottom die reinforcing ribs 2503 are longitudinally arranged, the bottom die reinforcing ribs 2504 are transversely arranged, the bottom die reinforcing ribs 2503 are connected to form a whole, so that the supporting strength is better ensured, and the bottom die reinforcing ribs 2504 can be arranged on one side, away from the bottom die body 2501, of the bottom die reinforcing ribs 2503 for convenient welding. The bottom mold stiffener 2504 may be made of steel, such as 12mm screw steel. A ring of bottom die cross members 2502 may be fixed to the lower surface of the bottom die body 2501 on the peripheral side, and the peripheral side of the bottom die body 2501 may be integrally reinforced.

Further, as shown in fig. 9, the side mold unit includes a side mold unit body 2302, a hoop 2301 and side mold reinforcing ribs 2303, the lateral section of the side mold unit body 2302 is arc-shaped, the outer wall is connected with a plurality of vertically arranged side mold reinforcing ribs 2303 at intervals, and two sides of the outer wall are provided with side mold unit connection plates 2304, the side mold unit connection plates 2304 preferably extend from the top to the bottom of the side mold unit body 2302, and when the side mold unit bodies 2302 are screwed together, mud can be better prevented from leaking from the spliced position; the outer side of the side die reinforcing rib 2303 is connected with an arc-shaped hoop 2301 which is transversely arranged, and two ends of the hoop 2301 are also provided with hoop 2301 connecting plates; the side die unit connection plates 2304 and the anchor ear 2301 of the adjacent side die units are screwed together through the side die 23 connection pieces to enclose the side die 23. Specifically, the side die unit connection plates 2304 and the anchor ear connection plates 2305 are all provided with through holes, the side die connection pieces adopt bolts and nuts, the bolts respectively penetrate through the through holes of the side die unit connection plates 2304 and the anchor ear connection plates 2305 and are screwed into the nuts again to be fastened, the connection mode adopted in engineering is convenient to install and detach, and the details are not repeated here. The side die unit body 2302 may be made of steel plates, and may be selected from different thicknesses of steel plates, such as 3mm or 6mm, depending on the slurry requirements to be carried. Both the side mold reinforcing ribs 2303 and the anchor ear 2301 can be made of channel steel, such as 5# channel steel and 8# channel steel. A mud hole 2306 may be provided on one side of the upper portion of the side form unit body 2302 to connect a mud pit circulation pipe or a mud chute 12 to enable mud flow between mud pits. The hoop connecting plates 2305 are generally abutted against the outer side surfaces of the side die unit connecting plates 2304, and the side die unit connecting plates 2304 and the hoop connecting plates 2305 are arranged at the positions of the edges of the two sides of the side die unit body 2302, so that the side die unit body 2302 can be better connected together. For the connection of the bottom die 25 and the side die 23, a bolt hole is formed in the circumferential side of the bottom die body 2501, a bolt hole is also formed in the bottom of the side die 23, the bolt hole of the bottom die body 2501 is a through hole, the bolt hole of the side die 23 is a blind hole, and the bolt penetrates through the bolt hole of the bottom die body 2501 and is screwed into the bolt hole of the side die 23, so that the bottom die 25 and the side die 23 are fixed together. Here, the positions where the side molds 23 are provided with bolt holes means a side mold unit body 2302, which is the basic structure of the side molds 23, as will be readily understood and appreciated by those skilled in the art. When the bottom die 25 and the side die 23 are to be separated, the bolts are screwed out.

In addition, for stirring supporting mechanism, combine the fig. 8 to show, this embodiment also provides a specific structure of easy to assemble, stirring supporting mechanism includes two stirring supporting beams 2202, stirring supporting beam 2202 both ends are connected with the top of side form 23 respectively, the space between two stirring supporting beams 2202 holds the (mixing) shaft of mixer 2201 and passes, can erect the motor of mixer 2201 above through two stirring supporting beams 2202, and two stirring supporting beams 2202 pass through the top of bolt can install at side form 23, convenient and fast. The agitating support beam 2202 may be formed from a channel, such as a 10# channel or a 12# channel.

Further, the sand separating apparatus 27 is important for the treatment of both the slurry management system and the slurry purification system, and this embodiment also provides a preferred structure, and in conjunction with fig. 11, the sand separating apparatus 27 includes a cyclone 2701, a primary screen 2702 and a secondary screen 2704, and in conjunction with the partial sectional view of fig. 3, the primary screen 2702 and the secondary screen 2704 are disposed at intervals in the lower portion of the cyclone 2701, and the aperture of the primary screen 2702 is larger than that of the secondary screen 2704. The cyclone 2701 is used for separating sand, mud flows out from an upper overflow port, mud slag containing sand flows out from a bottom flow port at the bottom, the mud at the upper overflow port enters the circulating pool 5 or the dosing treatment device 31, the sand flowing out from the bottom flow port is filtered by a two-stage screen, coarse and fine mud sand is separated, the coarse mud sand is discharged from one side of the first-stage screen 2702, the fine mud sand is discharged from one side of the second-stage screen 2704, and thus the separated mud slag can be separated into coarse sand and mud, and then classification treatment is correspondingly carried out. For the convenience of fully screening mud and silt, a vibrating motor is arranged on the first-stage screen 2702 and/or the second-stage screen 2704, and the vibrating motor vibrates, so that better filtering of the silt can be facilitated, and the rapid separation of coarse sand and the silt can be realized. In addition, for convenient operation, the primary screen 2702 and the secondary screen 2704 are fixed by a fixing mechanism, as shown in fig. 11, i.e. a cylinder is connected below the cyclone 2701, the primary screen 2702 and the secondary screen 2704 are fixed in the cylinder at intervals, a primary slag outlet 2705 is arranged on one side of the primary screen 2702 on the side wall of the cylinder, the primary slag outlet 2705 is obliquely arranged upwards along the slag outlet direction, thus prolonging the vibration screening time of the sludge on the primary screen 2702 and reducing the water content of coarse sand. Similarly, a secondary slag outlet 2703 is also provided on one side of the secondary screen 2704, and the secondary slag outlet 2703 is provided obliquely upward in the slag discharging direction.

In addition, the slurry management system can adopt automatic control, and the slurry management system also comprises a controller which is respectively connected with the sand separating device 27, the online densimeter 21 and the pulping device 30, and is also connected with a fourth slurry pump 29 matched with the sand separating device 27 and a screw pump 18 matched with the pulping device 30. When the on-line densitometer 21 feeds back the detected slurry density to the controller, the controller judges that the slurry density is low or high, and sends a command to the pulping device 30, the pulping device 30 prepares slurry with high or low density, after the preparation is finished, the controller feeds back the slurry to the controller, the controller starts the screw pump 18 to send the slurry prepared by the pulping device 30 into the second slurry feeding pipe from the slurry adjusting hole, the slurry is mixed with the slurry sent from the sand separating device 27, the slurry density entering the circulating pool 5 is adjusted, in addition, if the slurry needs to be supplemented in the drilling process, the liquid level of the slurry in the pile hole 7 is ensured, the controller sends a command to the pulping device 30, the slurry with normal density prepared by the pulping device 30 is fed back to the controller, and the controller starts the screw pump 18 to send the slurry prepared by the pulping device 30 into the second slurry feeding pipe from the slurry adjusting hole. The controller can ensure the stable control of the density of the circulating slurry, enhance the wall protection effect, improve the drilling efficiency, greatly shorten the hole cleaning time after hole forming and ensure the construction quality and the progress.

Claims (10)

1. The application of the integrated construction platform in the construction of the underwater pile foundation is characterized in that:

the integrated construction platform comprises a first steel platform, a sedimentation tank, a circulating tank and a slurry management system, wherein the sedimentation tank and the circulating tank are arranged in a space below a first panel of the first steel platform, and the slurry management system is arranged on the first panel;

the mud management system comprises a pulping device, a pulping pipe, a first pulp feeding pipe, a sand separating device, a second pulp feeding pipe and an online densimeter, wherein: an inlet of the first slurry feeding pipe is connected with an outlet of the slurry making device; the slurry inlet pipe is used for introducing slurry with drilling slag extracted from a sedimentation tank or a pile hole into the sand separating device; the online densimeter is arranged on the pulp inlet pipe; the sand separating device is connected with the outlet of the slurry inlet pipe and is used for primarily screening the slurry with drilling slag introduced from the slurry inlet pipe to separate out silt and slurry; the inlet of the second slurry conveying pipe is connected with the slurry outlet of the sand separating device, the outlet extends into the circulating pool, and a slurry adjusting hole is arranged and connected with the outlet of the first slurry conveying pipe;

the application comprises the following steps:

starting a pulping device to prepare slurry, and conveying the slurry to a circulating pool through a first slurry conveying pipe and a second slurry conveying pipe after the slurry is prepared;

The first slurry pump of the circulating pool pumps the slurry into the steel casing, the drilling machine is started, the slurry is drilled under the protection of the slurry, meanwhile, the second slurry pump of the pile opening pumps the slurry into the sedimentation pool, and the slurry in the sedimentation pool enters the circulating pool after sedimentation and separation;

when the slurry entering the circulating tank from the sedimentation tank can meet the slurry construction requirement, closing the pulping device;

when the parameters of the slurry in the slurry circulation process do not meet the construction requirements, the slurry pumped by the second slurry pump is introduced into the sand separation device, or the slurry in the sedimentation tank is introduced into the sand separation device, the separated slurry enters the second slurry feeding pipe, and the slurry is prepared by selectively starting or not starting the slurry preparation device according to the slurry density detected by the online densimeter, if the slurry preparation device is started, the slurry prepared by the slurry preparation device also enters the second slurry feeding pipe, is mixed with the slurry separated by the sand separation device, and is discharged to the circulation tank.

2. The use according to claim 1, characterized in that:

when the hole is cleaned, the slurry pumped by the second slurry pump is introduced into the sand separating device, or the slurry in the sedimentation tank is introduced into the sand separating device, the slurry is separated by the sand separating device, and the separated slurry is transported to the bottom of the hole through the second slurry conveying pipe for slurry circulation and deslagging.

3. The use according to claim 1, characterized in that:

the integrated construction platform further comprises a mud purifying system, wherein the mud purifying system comprises a dosing treatment device, a purifying and precipitating device, a pipeline spiral mixing device, a filter pressing separation device, a clean water tank and a buffer tank, an inlet of the dosing treatment device is connected with a mud outlet of the sand separating device, and an outlet of the dosing treatment device is connected with an inlet of the purifying and precipitating device; a sediment outlet at the lower part of the purification and sedimentation device is connected with an inlet of the pipeline spiral mixing device, and a clear water overflow port at the upper part of the purification and sedimentation device is connected with an inlet of the clear water tank; the outlet of the pipeline spiral mixing device is connected with the inlet of the filter pressing separation device; the filtrate outlet of the filter pressing separation device is connected with the inlet of the buffer tank;

before pile foundation pouring, pumping slurry of a sedimentation tank into a sand separating device, adding flocculant into the separated slurry through a chemical adding treatment device, then entering a purifying sedimentation device to separate clear water and sediment, enabling the clear water to enter a clear water tank for recycling or directly discharging, pumping the sediment into a pipeline spiral mixing device to mix medicines, enabling the mixed sediment to enter a filter pressing separation device, separating mud cakes and sewage through the filter pressing separation device, and enabling the sewage to flow into a buffer tank; and after the slurry treatment in the sedimentation tank is finished, the space can be reserved for storing surplus slurry during pile foundation pouring.

4. The use according to claim 1, characterized in that:

the first steel platform comprises a first upright post, a first transverse connection, a first distribution beam, a first longitudinal beam, a first cross beam and a first panel, wherein the first upright post and the first transverse connection enclose a cube, the top of the first upright post is vertically connected with the first distribution beam along a transverse interval, the top of the first distribution beam is vertically connected with the first longitudinal beam along a longitudinal interval, the top of the first longitudinal beam is vertically connected with the first cross beam along a transverse interval, and the top of the first cross beam supports the first panel;

the circulating pool and the sedimentation pool are arranged on the first cross joint; the tops are communicated through a mud chute or a mud pool circulating pipeline;

the first panel comprises an assembled panel and a fixed panel, the circulating tank and/or the position of the area above the sedimentation tank, where the first panel is correspondingly installed, is set as a detachable assembled panel, and the rest position is a fixed panel.

5. The use according to claim 4, characterized in that:

the assembled panel is connected through U-shaped bolts, gaskets and nuts, through holes are vertically formed in the assembled panel in a penetrating mode, two ends of each U-shaped bolt penetrate through the through holes of the assembled panel, the gaskets are inserted into two ends of each U-shaped bolt from below and clamped below the first cross beam/the first longitudinal beam, and the nuts are screwed into two ends of each U-shaped bolt to fix the assembled panel.

6. Use according to claim 4 or 5, characterized in that:

when the drilling slag in the sedimentation tank reaches half, the assembled panel is removed and lifted to the outer side of the platform through a crane so as to expose the sedimentation tank, the drilling slag precipitated in the sedimentation tank is stirred and scattered, a mud management system is started, mud and the drilling slag in the sedimentation tank are pumped out, and the drilling slag is separated through a sand separation device.

7. Use according to any one of claims 1-5, characterized in that:

the integrated construction platform further comprises a second steel platform which is vertically connected to one side of the first steel platform; the second steel platform comprises a second upright post, a second transverse connection, a second distribution beam, a second longitudinal beam, a second cross beam and a second panel, wherein the second upright post and the second transverse connection are enclosed to form a cube, the top of the first upright post is vertically connected with the second distribution beam along a longitudinal interval, the top of the second distribution beam is vertically connected with the second longitudinal beam along a transverse interval, the top of the second longitudinal beam is vertically connected with the second cross beam along a longitudinal interval, and the top of the second cross beam is supported with the second panel.

8. Use according to any one of claims 1-5, characterized in that:

The sedimentation tank with the assembled mud pit is all adopted to the circulation tank, the mud pit includes die block, side form, mixing system and ends thick liquid mechanism, wherein: the bottom die is circular; the side die at least comprises two side die units which are transversely spliced together to form a cylinder, and the bottom of the side die is connected with the bottom die to form a mud pit body; the stirring system comprises a stirrer and a stirring supporting mechanism, the stirring supporting mechanism is detachably connected with the top of the side die, the upper part of the stirrer is connected with the stirring supporting mechanism, and the lower part of the stirrer stretches into the mud pit body; the grout stopping mechanism comprises a grout stopping plate, a grout stopping sealing plate and a grout stopping stiffening plate, wherein the grout stopping plate is annular, the lower surface of the grout stopping plate is connected with the bottom die, the outer diameter of the grout stopping plate is matched with the inner diameter of the side die, a plurality of triangular grout stopping stiffening plates are arranged on the inner wall at intervals, the lower surface of the grout stopping stiffening plate is connected with the bottom die, the inner side surface of the grout stopping stiffening plate is connected with the annular grout stopping sealing plate, and the grout stopping sealing plate shields the space formed by the grout stopping stiffening plate, the grout stopping plate and the bottom die.

9. The use according to claim 8, characterized in that:

the bottom die comprises a bottom die body and bottom die reinforcing ribs, wherein the bottom die body is circular, and a plurality of bottom die reinforcing ribs are connected to the lower surface of the bottom die body at intervals; bottom die reinforcing ribs are vertically connected between the bottom die reinforcing ribs at intervals;

The side die unit comprises a side die unit body, a hoop and side die reinforcing ribs, wherein the transverse section of the side die unit body is arc-shaped, a plurality of vertically arranged side die reinforcing ribs are connected to the outer wall at intervals, and side die unit connecting plates are arranged on two sides of the outer wall; the outer side of the side die reinforcing rib is connected with an arc-shaped hoop which is transversely arranged, and hoop connecting plates are also arranged at two ends of the hoop; the side die unit connecting plates of the adjacent side die units and the hoop connecting plates are screwed together through the side die connecting pieces to enclose the side die.

10. Use according to any one of claims 1-5, characterized in that:

the sand separating device comprises a cyclone, a first-stage screen and a second-stage screen, wherein the lower part of the cyclone is provided with the first-stage screen and the second-stage screen at intervals, and the aperture of the first-stage screen is larger than that of the second-stage screen; a vibrating motor is arranged on the first-stage screen mesh and/or the second-stage screen mesh; one side of the primary screen is provided with a primary slag outlet, and the primary slag outlet is obliquely upwards arranged along the slag discharging direction; one side of the secondary screen is provided with a secondary slag outlet, and the secondary slag outlet is obliquely upwards arranged along the slag outlet direction.