阅读说明：本技术 一种在淤泥地形上修筑临时便道的施工装置及施工方法 (Construction device and construction method for building temporary sidewalk on sludge terrain ) 是由 高树青 敖长江 宋合财 包汉营 郭志光 李星 于 2021-07-27 设计创作，主要内容包括：本发明公开了一种在淤泥地形上修筑临时便道的施工装置及施工方法,用于在淤泥地形上铺设临时便道,包括真空挤压成桩管、中心挤密管、周边挤密管、真空降水管和真空挤密管,所述真空挤压成桩管、真空降水管和真空挤密管均与真空泵连接,所述中心挤密管和周边挤密管设在真空挤压成桩管中,用于固结桩的成桩,所述真空降水管和真空挤密管设在承载基层上,用于承载基层成型。本发明采用施工装置对淤泥进行挤密固结,快速形成符合要求的挡水墙和承载基层,利用淤泥挤密固结形成便道的支撑基础,就地取材,减少便道施工对外来材料的依赖,有效降低施工成本及施工难度,并能有效提升便道施工的速度。(The invention discloses a construction device and a construction method for building a temporary access on a sludge terrain, which are used for laying the temporary access on the sludge terrain, and comprise a vacuum extrusion pile pipe, a central extrusion pipe, a peripheral extrusion pipe, a vacuum downcomer pipe and a vacuum extrusion pipe, wherein the vacuum extrusion pile pipe, the vacuum downcomer pipe and the vacuum extrusion pipe are all connected with a vacuum pump, the central extrusion pipe and the peripheral extrusion pipe are arranged in the vacuum extrusion pile pipe and are used for forming a consolidated pile, and the vacuum downcomer pipe and the vacuum extrusion pipe are arranged on a bearing base layer and are used for forming the bearing base layer. The construction device is adopted to carry out compaction and consolidation on the silt, the water retaining wall and the bearing base layer which meet requirements are quickly formed, the silt is utilized to carry out compaction and consolidation to form a supporting foundation of the access road, local materials are used, dependence of the access road construction on foreign materials is reduced, construction cost and construction difficulty are effectively reduced, and the speed of the access road construction can be effectively increased.)

1. A construction device for building a temporary access on a sludge terrain is used for laying the temporary access on the sludge terrain, and is characterized by comprising a vacuum extrusion pile pipe (1), a central extrusion pipe (2), a peripheral extrusion pipe (3), a vacuum downcomer pipe (4) and a vacuum extrusion pipe (5), wherein the vacuum extrusion pile pipe (1), the vacuum downcomer pipe (4) and the vacuum extrusion pipe (5) are all connected with a vacuum pump, the central extrusion pipe (2) and the peripheral extrusion pipe (3) are arranged in the vacuum extrusion pile pipe (1) and are used for consolidating the pile to form a pile, and the vacuum downcomer pipe (4) and the vacuum extrusion pipe (5) are arranged on a bearing base layer and are used for forming the bearing base layer;

the vacuum extrusion pile pipe (1) comprises a pile forming pipe (11), a pile forming filter pipe (12) and a vacuum pipe (13); the pile-forming filter pipes (12) are arranged on the outer wall of the pile-forming pipe (11) at intervals, the vacuum pipes (13) are arranged on the outer wall of the pile-forming pipe (11) in a surrounding mode, the vacuum pipes (13) are connected with the pile-forming filter pipes (12), and the pile-forming filter pipes (12) arranged at intervals are communicated with each other;

the vacuum compaction pipe (5) comprises a compaction pipe (51), compaction filter pipes (52) and a water outlet pipe (53), wherein the compaction filter pipes (52) are arranged on the inner wall of the compaction pipe (51) at intervals, and the water outlet pipe (53) is arranged at the top of the compaction filter pipes (52).

2. The construction equipment for building temporary walkways on muddy terrain according to claim 1, wherein: the central compaction pipe (2) is arranged in a pipe cavity of the vacuum extrusion pile pipe (1) and is positioned at the center, the peripheral compaction pipes (3) are arranged in the pipe cavity of the vacuum extrusion pile pipe (1) at intervals and are contacted with the inner wall of the pile forming pipe (11), and the upper end part and the lower end part of each of the central compaction pipe (2) and the peripheral compaction pipes (3) extend out of the vacuum extrusion pile pipe (1).

3. The construction equipment for building temporary walkways on muddy terrain according to claim 1, wherein: the inner wall of the pile forming pipe (11) is provided with water passing grilles (111) at intervals, and the water passing grilles (111) are arranged corresponding to the pile forming filter pipe (12); the water permeable pore group (511) is arranged on the extrusion pipe (51), and the water permeable pore group (511) is arranged on the pipe wall of the extrusion pipe (51) and corresponds to the extrusion filtering pipe (52) on the inner wall.

4. The construction equipment for building temporary walkways on muddy terrain according to claim 1, wherein: and filter fillings (121) are arranged in the pile-forming filter pipe (12), the vacuum pipe (13) and the compaction filter pipe (52).

5. The construction equipment for building temporary walkways on muddy terrain according to claim 1, wherein: the vacuum dewatering pipe (4) comprises vertical pipes and transverse pipes, the vertical pipes are arranged on the transverse pipes at intervals and inserted into sludge, and the transverse pipes are connected with a vacuum pump.

6. The construction equipment for building temporary walkways on muddy terrain according to claim 1, wherein: the vacuum pipe (13) is arranged at the upper part of the pile forming pipe (11) and connected to the top end of the pile forming filter pipe (12), a connecting pipe (131) is arranged on the vacuum pipe (13), and the connecting pipe (131) is connected with a vacuum pump.

7. A construction method using the construction apparatus for constructing a temporary pavement on a muddy terrain according to any one of claims 1 to 6, characterized in that: the method comprises the following steps:

s1, construction preparation: marking and positioning according to construction requirements, and marking the construction range of the water retaining wall;

s2, primary consolidation of the consolidation pile: adopting hoisting equipment to extrude a vacuum into a pile pipe (1) to be inserted into the sludge, connecting the vacuum extruded pile pipe (1) with a vacuum pump, and performing drainage consolidation on the sludge in the pipe to form a primary pile;

s3, primary compaction of the consolidation piles: inserting the central extrusion pipe (2) into the vacuum extrusion pile pipe (1) and locating at the central position of the consolidation pile, and carrying out primary compaction on the consolidation pile to form a consolidation clay pile;

s4, final consolidation of the consolidation pile: removing the central compaction pipe (2), inserting the peripheral compaction pipes (3) into the vacuum extrusion pile pipe (1), surrounding the periphery of the consolidation pile, compacting the consolidation pile again, extruding the compaction hole at the center to seal, and consolidating to form the consolidation pile;

s5, continuous construction of the consolidation piles: sequentially carrying out construction of the consolidation piles according to the sequence to form a continuous water retaining wall;

s6, carrying base layer drainage: a vacuum downcomer (4) is inserted into the inner side of the water retaining wall to form a drainage pipe network, and water inside and above the bearing base layer in the water retaining wall is drained;

s7, compacting the bearing base layer: vacuum extrusion pipes (5) are inserted into the central axis of the bearing base layer at intervals to perform auxiliary drainage and extrusion on the bearing base layer, so that the bearing performance of the bearing base layer is enhanced;

s8, constructing the pavement of the pavement: and (3) removing the vacuum dewatering pipe (4) and the vacuum compaction pipe (5), paving a surface gravel layer on the bearing base layer, and rolling to form a pavement of the temporary pavement to finish the construction of the temporary pavement.

8. The construction method for building the temporary access road on the sludge terrain as claimed in claim 1, wherein: in the step S2, primarily forming a pile when the water content of sludge in the pipe, which is extruded into the pile pipe (1) in vacuum, is reduced to 30%;

in the step S3, a preliminary pile is formed by inserting the central compaction pipe (2) to reduce the water content of sludge in the pipe of the vacuum extrusion pile pipe (1) to 20%;

in step S4, after the consolidation pile is consolidated into a pile, the water content of the sludge constituting the pile body is less than 10%.

9. The construction method for building the temporary access road on the sludge terrain as claimed in claim 1, wherein: in steps S6 and S7, the water content of the sludge forming the bearing base layer is reduced to be lower than 10%, and the bearing strength of the bearing base layer is increased to 10 MPa.

10. The construction method for building the temporary access road on the sludge terrain as claimed in claim 1, wherein: in step S8, when the surface gravel layer is laid, gravel is filled in pile holes formed in the vacuum-packed tube (5) to form gravel piles.

Technical Field

The invention relates to the technical field of soft reinforcement construction of sludge, in particular to a construction device and a construction method for building a temporary sidewalk on a sludge terrain.

Background

When construction is carried out in tropical regions or developed water systems, construction roads are often required to be built on ponds for construction, and the construction roads are generally carried out by filling, silt squeezing, stirring and airing. However, the stone-filling and soil-filling silt-squeezing needs a large amount of construction materials, the construction cost is high, large-scale machinery cannot enter a water system developed area conveniently, the transportation and construction of the filling materials are troublesome, and the construction cost is greatly increased. The whole construction process of the method such as airing is complicated, the construction period is long, the method depends on seasons seriously, uncertain factors are too high, and the applicability is poor. The invention provides a construction device and a construction method for building a temporary sidewalk on a sludge terrain, which solve the problems.

Disclosure of Invention

The invention provides a construction device and a construction method for building a temporary access road on a sludge terrain, which are used for quickly constructing the access road under the sludge terrain.

The technical scheme adopted by the invention for solving the technical problems is as follows:

a construction device for building a temporary access on a sludge terrain is used for laying the temporary access on the sludge terrain and comprises a vacuum extrusion pile pipe, a central extrusion pipe, a peripheral extrusion pipe, a vacuum downcomer pipe and a vacuum extrusion pipe, wherein the vacuum extrusion pile pipe, the vacuum downcomer pipe and the vacuum extrusion pipe are all connected with a vacuum pump;

the vacuum extrusion pile pipe comprises a pile forming pipe, a pile forming filter pipe and a vacuum pipe; the pile-forming filter pipes are arranged on the outer wall of the pile-forming pipe at intervals, the vacuum pipes are arranged on the outer wall of the pile-forming pipe in a surrounding manner, the vacuum pipes are connected with the pile-forming filter pipes, and the pile-forming filter pipes arranged at intervals are communicated with each other;

the vacuum compaction pipe comprises a compaction pipe, compaction filter pipes and a water outlet pipe, wherein the compaction filter pipes are arranged on the inner wall of the compaction pipe at intervals, and the water outlet pipe is arranged at the top of the compaction filter pipe.

Furthermore, the central compaction pipe is arranged in the pipe cavity of the vacuum extrusion pile pipe and is positioned at the center, the peripheral compaction pipes are arranged in the pipe cavity of the vacuum extrusion pile pipe at intervals and are contacted with the inner wall of the pile forming pipe, and the upper end part and the lower end part of each of the central compaction pipe and the peripheral compaction pipes extend out of the vacuum extrusion pile forming pipe.

Furthermore, water passing grilles are arranged on the inner wall of the pile forming pipe at intervals, and the water passing grilles and the pile forming filter pipe are arranged correspondingly; the water permeable hole group is arranged on the pipe wall of the compaction pipe and corresponds to the compaction filter pipe on the inner wall.

Furthermore, the pile-forming filter pipe, the vacuum pipe and the compaction filter pipe are all internally provided with filter fillings.

Further, the vacuum downcomer includes standpipe and violently pipe, the standpipe interval sets up on violently pipe, and in inserting silt, violently pipe and vacuum pump connection.

Furthermore, the vacuum pipe is arranged at the upper part of the pile forming pipe and connected to the top end of the pile forming filter pipe, and a connecting pipe is arranged on the vacuum pipe and connected with the vacuum pump.

A construction method for building temporary sidewalks on sludge terrain comprises the following steps:

s1, construction preparation: marking and positioning according to construction requirements, and marking the construction range of the water retaining wall;

s2, primary consolidation of the consolidation pile: adopting hoisting equipment to extrude a vacuum into a pile pipe to be inserted into the sludge, driving a pipe body into the sludge by using a vibration hammer, connecting the vacuum extruded pile pipe with a vacuum pump, and performing compaction, drainage and solidification on the sludge in the pipe to form a primary pile;

s3, primary compaction of the consolidation piles: driving the central compaction pipe into a vacuum extrusion pile pipe, locating the central position of the consolidation pile, and carrying out preliminary compaction, drainage and consolidation on the consolidation pile to form a consolidation clay pile;

s4, final consolidation of the consolidation pile: removing the central compaction pipe, driving the peripheral compaction pipes into a vacuum extrusion pile pipe, surrounding the periphery of the consolidation pile, carrying out compaction drainage consolidation on the consolidation pile again, extruding the compaction hole at the center to form the consolidation pile;

s5, continuous construction of the consolidation piles: sequentially carrying out construction of the consolidation piles according to the sequence to form a continuous water retaining wall;

s6, carrying base layer drainage: inserting a vacuum downcomer pipe into the inner side of the water retaining wall to form a drainage pipe network, and discharging flowing water above a bearing base layer in the water retaining wall;

s7, compacting the bearing base layer: vacuum compaction pipes are inserted into the bearing base layer at intervals, a vibration hammer is used for driving the pipe body into sludge, compaction drainage consolidation is carried out on the bearing base layer, and the bearing performance of the bearing base layer is enhanced;

s8, constructing the pavement of the pavement: and (3) removing the vacuum dewatering pipe and the vacuum compaction pipe, paving the surface gravel layer on the bearing base layer, and rolling to form a pavement of the temporary pavement to finish the construction of the temporary pavement.

Preferably, in step S2, the sludge in the pipe vacuum-extruded into the pile pipe is formed into a pile by reducing the water content to 30%;

in step S3, inserting a central compaction pipe to form a primary pile when the water content of sludge in the pipe which is vacuum-extruded into a pile pipe is reduced to 20%;

in step S4, after the consolidation pile is consolidated into a pile, the water content of the sludge constituting the pile body is less than 10%.

Preferably, in steps S6 and S7, the moisture content of the sludge composing the load-bearing substrate is reduced to less than 10%, and the load-bearing strength of the load-bearing substrate is increased to 10 Mpa.

Preferably, in step S8, when the surface gravel layer is laid, gravel is filled in the pile hole formed by the vacuum compaction pipe to form a gravel pile.

The invention has the following beneficial effects:

the construction device is adopted to carry out compaction and consolidation on the sludge, the water retaining wall and the bearing base layer which meet the requirements are quickly formed, the sludge is utilized to carry out compaction and consolidation to form a support foundation of the access road, local materials are used, the dependence of the access road construction on foreign materials is reduced, the construction cost and the construction difficulty are effectively reduced, and the speed of the access road construction can be effectively increased;

the construction method can realize the rapid construction of the construction access road, finish the construction of the access road in a short time and meet the short-term traffic requirement of construction vehicles.

Drawings

FIG. 1 is a schematic view of the present invention in use;

FIG. 2 is a schematic view of the assembly of a vacuum extruded pile tube and a central extruded tube of the present invention;

FIG. 3 is a schematic view of the assembly of the vacuum extruded pile tube and the peripheral extruded tube of the present invention;

FIG. 4 is a schematic cross-sectional view of a vacuum extruded pile-forming tube structure of the present invention;

FIG. 5 is a schematic cross-sectional view of a vacuum extruded pile tube of the present invention;

FIG. 6 is a schematic view of the overall structure of the vacuum squeeze tube of the present invention;

FIG. 7 is a schematic partial cross-sectional view of a vacuum packed tube of the present invention.

Reference numerals: 1-vacuum extrusion of a pile pipe, 11-a pile forming pipe, 111-a water passing grid, 12-a pile forming filter pipe, 121-filter filling, 13-a vacuum pipe, 131-a connecting pipe, 2-a central extrusion pipe, 3-a peripheral extrusion pipe, 4-a vacuum downcomer pipe, 5-a vacuum extrusion pipe, 51-an extrusion pipe, 511-a water passing hole group, 52-an extrusion filter pipe and 53-a water outlet pipe.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the specification, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of this patent, it is to be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the convenience of describing the patent and for the simplicity of description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the patent.

As shown in figure 1, the construction device for building the temporary access on the sludge terrain is used for laying the temporary access under the sludge terrain environment with low permeability coefficient, the temporary access comprises a water retaining wall, a bearing base layer and an access road surface, the water retaining wall is composed of consolidation piles which are arranged at intervals, the water retaining wall is arranged on the outer side of the bearing base layer, sludge is arranged on the outer side of the water retaining wall, and the access road surface is laid on the bearing base layer.

As shown in fig. 1, 2, 3 and 6, the construction device for constructing the access road comprises a vacuum extrusion pile pipe 1, a central compaction pipe 2, a peripheral compaction pipe 3, a vacuum downcomer pipe 4 and a vacuum compaction pipe 5, wherein the vacuum extrusion pile pipe 1, the vacuum downcomer pipe 4 and the vacuum compaction pipe 5 are all connected with a vacuum pump, the central compaction pipe 2 and the peripheral compaction pipe 3 are arranged in the vacuum extrusion pile pipe 1 and used for consolidating the pile to form the pile, and the vacuum downcomer pipe 4 and the vacuum compaction pipe 5 are arranged on a bearing base layer and used for forming the bearing base layer.

As shown in fig. 2, 3 and 4, the vacuum extrusion pile tube 1 comprises a pile forming tube 11, a pile forming filter tube 12 and a vacuum tube 13; the pile-forming filtering pipes 12 are arranged on the outer wall of the pile-forming pipe 11 at intervals, the vacuum pipe 13 is arranged on the outer wall of the pile-forming pipe 11 in a surrounding mode, the vacuum pipe 13 is connected with the pile-forming filtering pipes 12, and the pile-forming filtering pipes 12 arranged at intervals are communicated with each other.

The principle of vacuum extrusion into the pile tube 1 is as follows: after the vacuum extrusion pile pipe 1 is inserted into the sludge, the sludge is filled into the pile forming pipe 11, the central extrusion pipe 2 is firstly inserted into the sludge in the pipe cavity, the sludge is compacted by the volume increase after the central extrusion pipe 2 is inserted, moisture in the sludge is extruded and then enters the pile forming filter pipe 12 through the water passing grid 111, then the sludge is pumped out through the vacuum pipe 13, the central extrusion pipe 2 is pulled out after the sludge in the pipe cavity is preliminarily compacted and solidified, then the peripheral extrusion pipes 3 are inserted into the pipe cavity of the pile forming pipe 11 at intervals, and further compaction drainage solidification is carried out on the sludge in the pipe, so that the water content and the bearing strength of the sludge in the pipe meet the requirements.

As shown in fig. 6 and 7, the vacuum compacting tube 5 includes a compacting tube 51, a compacting filter tube 52 and a water outlet tube 53, the compacting filter tube 52 is disposed at intervals on the inner wall of the compacting tube 51, and the water outlet tube 53 is disposed at the top of the compacting filter tube 52.

The principle of the vacuum-packing tube 5 is as follows: after the vacuum compaction pipe 5 is inserted into the sludge, the compaction pipe 51 has larger volume, so that the extruded sludge deforms and is compacted, water in the sludge is extruded out, the water enters the compaction filter pipe 52 through the water permeable hole group 511 after being extruded out, and the extruded water in the compaction filter pipe 52 is pumped out by a vacuumizing device; the sludge is compacted by the compacting pipe 51, and the extruded water is pumped away by the cooperation of the water permeable hole group 511 and the compacting filter pipe 52, so that the compacting by extrusion and the water outlet of the sludge soil body are realized, and the sludge soil body has enough bearing strength.

The central compaction pipe 2 and the peripheral compaction pipes 3 are arranged in the vacuum extrusion pile pipe 1, sludge in a pipe cavity of the vacuum extrusion pile pipe 1 is compacted, drained and consolidated to form a consolidated pile, and the consolidated pile is constructed in sequence to form a water retaining wall, so that the water retaining effect and the supporting effect on a bearing base layer are achieved; carry out precipitation to the silt in the waterwall through vacuum precipitation pipe 4, will regard as the water discharge on the silt of bearing the basic unit, will regard as the silt of bearing the basic unit to carry out crowded drainage consolidation through vacuum crowded close pipe 5 and form bearing the basic unit, bear the basic unit and have certain bearing capacity, can satisfy construction vehicles' temporary passage.

As shown in fig. 2 and 3, further, the central compaction pipe 2 is arranged in the lumen of the vacuum-extruded pile pipe 1 at the center, the peripheral compaction pipes 3 are arranged in the lumen of the vacuum-extruded pile pipe 1 at intervals and are in contact with the inner wall of the pile-forming pipe 11, and the upper and lower end portions of the central compaction pipe 2 and the peripheral compaction pipes 3 both extend out of the vacuum-extruded pile pipe 1. The central compaction pipe 2 and the peripheral compaction pipe 3 are used for being inserted into a pipe cavity of the vacuum extrusion pile pipe 1 to carry out compaction drainage on sludge, so that the sludge is solidified to form a soil body structure with certain bearing strength, and the purpose of building a construction access road is further achieved.

As shown in fig. 4, further, a water passing grid 111 is arranged on the inner wall of the pile forming pipe 11 at intervals, and the water passing grid 111 is arranged corresponding to the pile forming filter pipe 12; the said compact tube 51 is provided with a water hole group 511, the said water hole group 511 is arranged on the tube wall of the compact tube 51 and corresponds to the compact filter tube 52 on the inner wall. After the water contained in the sludge is extruded out, the water is collected by the water passing grating 111 and the water passing hole group 511 and then is uniformly discharged.

As shown in fig. 5, further, the pile-forming filter pipe 12, the vacuum pipe 13 and the compaction filter pipe 52 are all provided with filter fillings 121. The filter packings 121 are composed of sand and serve to filter the squeeze water while only allowing the squeeze water to pass therethrough.

As shown in fig. 1, further, the vacuum downcomer 4 includes vertical pipes and horizontal pipes, the vertical pipes are arranged on the horizontal pipes at intervals and inserted into the sludge, and the horizontal pipes are connected with a vacuum pump. The vacuum downcomer 4 is used to drain the flowing water above the sludge in preparation for the laying of the sidewalk.

As shown in fig. 2 and 4, the vacuum pipe 13 is disposed on the upper portion of the piling pipe 11 and connected to the top end of the piling filtering pipe 12, the vacuum pipe 13 is provided with a connecting pipe 131, and the connecting pipe 131 is connected to a vacuum pump.

As shown in fig. 4, preferably, the water passing grid 111 is uniformly arranged on the pipe wall of the pile-forming pipe 11 at intervals along the circumferential direction, the water passing grid 111 is arranged corresponding to the pile-forming filter pipe 12 inside and outside, and the pile-forming filter pipe 12 is located on the outer wall of the pile-forming pipe 11; the water passing grid 111 is located completely within the confines of the pile-forming filter tube 12.

As shown in fig. 7, preferably, the water-permeable hole groups 511 are arranged on the outer circumference of the compaction pipe 51 at regular intervals along the circumferential direction, the compaction filter pipes 52 are arranged corresponding to the inside and the outside of the water-permeable hole groups 511, and the compaction filter pipes 52 are positioned on the inner wall of the compaction pipe 51; the set of water holes 511 is located entirely within the confines of the compacted filter tube 52. In use, the sludge completely submerges the water grid 111 and the set of water permeable holes 511.

A construction method for building temporary sidewalks on sludge terrain comprises the following steps:

s1, construction preparation: marking and positioning according to construction requirements, and marking the construction range of the water retaining wall;

s2, primary consolidation of the consolidation pile: adopting hoisting equipment to extrude a vacuum into a pile pipe 1 to be inserted into the sludge, driving a pipe body into the sludge by using a vibration hammer, connecting the vacuum extruded pile pipe 1 with a vacuum pump, and performing compaction, drainage and consolidation on the sludge in the pipe to form a primary pile;

s3, primary compaction of the consolidation piles: driving the central extrusion pipe 2 into a vacuum extrusion pile pipe 1, locating the central position of the consolidation pile, and carrying out preliminary compaction, drainage and consolidation on the consolidation pile to form a consolidation clay pile;

s4, final consolidation of the consolidation pile: removing the central compaction pipe 2, driving the peripheral compaction pipe 3 into a vacuum extrusion pile pipe 1, surrounding the periphery of the consolidation pile, carrying out compaction drainage consolidation on the consolidation pile again, extruding the compaction hole at the center to form the consolidation pile;

s5, continuous construction of the consolidation piles: sequentially carrying out construction of the consolidation piles according to the sequence to form a continuous water retaining wall;

s6, carrying base layer drainage: inserting a vacuum downcomer 4 into the inner side of the water retaining wall to form a drainage pipe network, and discharging flowing water above a bearing base layer in the water retaining wall;

s7, compacting the bearing base layer: vacuum compaction pipes 5 are inserted into the bearing base layer at intervals, a vibration hammer is used for driving the pipe body into the sludge, compaction drainage consolidation is carried out on the bearing base layer, and the bearing performance of the bearing base layer is enhanced;

s8, constructing the pavement of the pavement: and (3) removing the vacuum downcomer 4 and the vacuum compaction pipe 5, paving a surface gravel layer on the bearing base layer, and rolling to form a pavement of the temporary pavement to finish the construction of the temporary pavement.

Preferably, in step S2, the sludge in the pipe vacuum-extruded into the pile pipe 1 is formed into a pile by a preliminary process when the water content of the sludge is reduced to 30%;

in step S3, inserting the central compaction pipe 2 to form a primary pile when the water content of sludge in the pipe, which is vacuum-extruded into the pile pipe 1, is reduced to 20%;

in step S4, after the consolidation pile is consolidated into a pile, the water content of the sludge constituting the pile body is 5%.

Preferably, in steps S6 and S7, the moisture content of the sludge composing the load-bearing substrate is reduced to less than 10%, and the load-bearing strength of the load-bearing substrate is increased to 10 Mpa.

Preferably, in step S8, when the surface gravel layer is laid, gravel is filled in the pile hole formed by the vacuum-packed tube 5 to form a gravel pile.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.