CN114892663A - Self-floating assembly type soil engineering pipe bag filling construction and dirt isolation method - Google Patents
Self-floating assembly type soil engineering pipe bag filling construction and dirt isolation method Download PDFInfo
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- CN114892663A CN114892663A CN202210769322.7A CN202210769322A CN114892663A CN 114892663 A CN114892663 A CN 114892663A CN 202210769322 A CN202210769322 A CN 202210769322A CN 114892663 A CN114892663 A CN 114892663A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
- E02B3/04—Structures or apparatus for, or methods of, protecting banks, coasts, or harbours
- E02B3/10—Dams; Dykes; Sluice ways or other structures for dykes, dams, or the like
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A10/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE at coastal zones; at river basins
- Y02A10/11—Hard structures, e.g. dams, dykes or breakwaters
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Abstract
The invention discloses a self-floating assembly type soil engineering pipe bag filling construction and dirt isolation method which comprises the steps of S1 building a self-floating platform, S2 positioning and fixing the self-floating platform, S3 installing a soil engineering pipe bag and a filling device, S4 building a dirt isolation system, S5 installing a safety protection device of the self-floating platform, S6 filling construction of the soil engineering pipe bag, disassembling and transferring the S7 filling dirt isolation system and the like, so that the whole process of the self-floating assembly type soil engineering pipe bag filling construction and dirt isolation method is completed. The self-floating assembly type geotextile tube bag filling construction and dirt isolation method is convenient to operate, adopts a self-floating assembly type structure, is compact in structure, convenient to assemble and disassemble, can be beneficial to sand filling operation of the geotextile tube bag, and is high in construction efficiency and low in use cost; and can carry out physical isolation to the sand water mixture of geotechnological pipe bag filling in-process, show the diffusion risk of reduction pollution, safe and reliable.
Description
Technical Field
The invention relates to the technical field of dam construction, in particular to a self-floating assembly type soil engineering pipe bag filling construction and dirt isolation method.
Background
In the river lake and sea entrance, water is bound by building a guide dike to prevent silt from silting; a breakwater is usually built in the coastal harbor area to resist the intrusion of sea waves into a harbor basin. The embankment engineering is carried out in water, the foundation is mostly a thick sludge layer, the structural design service life and the service period are long, the requirements on uneven settlement of the embankment body caused by a soft foundation and crack control of the embankment body are strict, and higher requirements are provided for the design of a foundation cushion layer.
The large-area earthwork pipe bag filled with sand is adopted as a sand bedding layer to increase the contact area of the dyke body and the foundation, the integrity of the dyke body is enhanced, and the uneven settlement of the dyke body can be effectively controlled. The conventional sand filling method for the geotechnical pipe bag adopts the pull-boat positioning, and two ships pull the positioning bag bodies to perform the sinking and sand filling work. And the water pollution caused by silt diffusion can not be controlled in the open environment, the construction requirement of green environmental protection is not met, and the requirement of optimizing construction equipment and process exists.
Disclosure of Invention
The invention aims to: provides a self-floating assembly type soil engineering pipe bag filling construction and dirt isolation method to solve the defects.
In order to achieve the above purpose, the invention provides the following technical scheme:
a self-floating assembly type soil engineering pipe bag filling construction and dirt isolation method comprises the following steps:
s1, building a self-floating platform:
according to the design requirement of the embankment, four steel tube cages are assembled, foam floating bodies are embedded in the steel tube cages, the four steel tube cages are connected end to end through spherical hinges to form a rectangular shape, and double-channel corner supports are installed on the inner sides of the joints of two adjacent steel tube cages in the four steel tube cages to construct a self-floating platform;
s2, positioning and fixing the self-floating platform:
firstly, towing a self-floating platform to a preset water area by using a tugboat, throwing all platform-fixed outer splayed anchor cables arranged outside a steel pipe cage out, positioning and lofting platform-fixed outer splayed anchor cable fixing points of the self-floating platform by using a total station, and then tightening all platform-fixed outer splayed anchor cables to complete the positioning and fixing work of the self-floating platform on the water surface;
s3, installing the soil engineering pipe bag and the filling device:
the earthwork pipe bag is transported to the inner area of the self-floating platform to be unfolded and arranged, and then a plurality of internal splayed pull cables are adopted to be fixed on the inner sides of the four steel pipe cages, so that positioning sinking is realized; after the silt barge is loaded with the silt to be in place, pumping water and slurry in a nearby water area through a water suction pump and pumping the water and the slurry into the silt barge to be mixed with the silt to form a silt-water mixture; sleeving a plurality of floating drums on the sand conveying pipeline, mounting a sand pump at the rear end of the sand conveying pipeline and placing the sand pump in a sand-water mixture stored by a sand barge; the six-way sand filling converter is installed on the self-floating platform, a sand outlet of the six-way sand filling converter is connected to a sand filling port of the geotechnical pipe bag through a pipeline, and the front end of the sand conveying pipeline is installed on a sand inlet of the six-way sand filling converter.
S4, building a sewage separation system:
a sewage separation curtain is arranged below the steel pipe cage outside the geotechnical pipe bag, and the sewage separation curtain is in a closed-loop wall shape connected end to end; a plurality of dirt separating curtain plumbous bodies are arranged on the lower side of the dirt separating curtain at equal intervals, so that the dirt separating curtain can be freely stretched and unfolded to form a separating system;
s5, installing the safety protection device of the self-floating platform:
an operation protective guard is arranged on the upper end face of a steel pipe cage of the self-floating platform, rails of the operation protective guard are arranged by adopting cross rods, and the operation protective guard can be used for tying and hanging safety ropes and is convenient for walking operation when tying and hanging the safety ropes;
s6, filling and filling construction of the soil engineering pipe bags:
starting a sand pump and filling a sand-water mixture stored in a sand barge into the geotechnical pipe bag through a sand conveying pipeline and a six-way sand filling converter; after the geotechnical pipe bag is filled to a certain degree, a large amount of sandstone slurry in the water on the upper layer in the geotechnical pipe bag is discharged through a pipe bag water outlet arranged at the upper end of the geotechnical pipe bag and is limited by a barrier system formed by a sewage barrier curtain; after the sand and stone in the geotechnical pipe bag are filled, tightening the geotechnical pipe bag and tightening the sand filling opening;
s7, disassembling and transferring the filling and dirt isolating system:
untying a plurality of internal splayed pull-tie cables fixed on the geotextile tube bags one by one, and then sequentially removing all parts of the whole filling and dirt isolating system, thereby completing the whole process of the self-floating assembly type geotextile tube bag filling construction and dirt isolating method; or the whole filling and dirt isolating system is disassembled to obtain only the self-floating platform, then the self-floating platform is transferred to another area to be constructed, and then the installation of the whole filling and dirt isolating system and the filling and dirt isolating construction operation are sequentially completed.
Preferably, in step S2, a total station is used for positioning lofting, and the specific method is as follows: a reflecting prism is fixedly placed at the fixed point of the fixed outer splayed anchor cable of the platform of the self-floating platform to serve as a front view mirror, a rear view mirror is placed at any flat position on land, and the position coordinates of the fixed point of the fixed outer splayed anchor cable of each platform are measured by the front view mirror which is aimed at by a total station, so that the positioning and lofting of the fixed outer splayed anchor cable of the platform are completed.
Preferably, four outer splayed anchor cables are arranged for fixing the platform and are respectively connected to four corners of the self-floating platform.
Preferably, in step S7, when the self-floating platform is completely transferred or the self-floating platform is rotated and displaced due to excessive wind and waves, the platform needs to be positioned and adjusted to meet the sinking accuracy of the geotextile tube bag; the specific operation method of the positioning adjustment comprises the following steps: firstly, loosening a platform fixing outer splayed anchor cable at one corner of the self-floating platform, then tightening the platform fixing outer splayed anchor cable at the diagonal position of the self-floating platform, and further adjusting the up-and-down displacement of the whole self-floating platform; secondly, tightening the platform at the critical position to fix the splayed anchor cable, adjusting the integral rotation angle of the self-floating platform, and realizing the positioning of the critical position of the self-floating platform; and finally, tightening the platform fixing outer splayed anchor cable at the other critical position and the platform fixing outer splayed anchor cable at one corner of the self-floating platform to realize the positioning adjustment of the whole self-floating platform.
Preferably, the six-way sand filling converter is provided with a sand inlet and five sand outlets, the six-way sand filling converter is connected with a sand inlet pipe on the sand inlet, the end of the sand inlet pipe is connected with one end of a sand conveying pipeline, the six-way sand filling converter has five sand outlets, including a main sand outlet and four auxiliary sand outlets, the main sand outlet is connected with a main sand outlet, the auxiliary sand outlets are connected with auxiliary sand outlets, the main sand outlet is connected on the left side or the right side of the geotextile tube bag and is communicated with the inside of the geotextile tube bag, and the auxiliary sand outlets are respectively connected with the upper and lower sides of the geotextile tube bag and are communicated with the inside of the geotextile tube bag.
Preferably, the hanging plate is arranged below the steel tube cage, a plurality of hanging holes are formed in the hanging plate at equal intervals, and a plurality of hooks arranged at the upper end of the dirt separation curtain are clamped in the hanging holes of the hanging plate respectively.
Preferably, the steel pipe cage is by the cage structure that a plurality of steel pipe combination welding formed to constitute by first section cage, middle section cage and back end cage, all be connected through one-way articulated joint between first section cage and the middle section cage, between middle section cage and the back end cage, first section cage front end the back end cage tail end all is provided with the ball hinge and realizes that the ball hinge between two steel pipe cages is articulated.
Preferably, the left side end face or the right side end face of the geotextile tube bag is provided with a main sand filling port, the upper side end face and the lower side end face of the geotextile tube bag are respectively provided with two auxiliary sand filling ports, the tail end of the main sand outlet pipe is connected to the main sand filling port, and the tail ends of the four auxiliary sand outlet pipes are respectively connected to the four auxiliary sand filling ports.
Preferably, the middle section cage frame is provided with a plurality of, a plurality of the middle section cage frame connects into linear structure head and the tail, just two all connect through one-way articulated joint between the middle section cage frame.
The invention has the beneficial effects that:
according to the self-floating assembly type geotextile tube bag filling construction and dirt isolation method, the foam floating body is arranged in the steel tube cage frame so as to improve the buoyancy of the whole system; the whole filling and dirt isolating device adopts an assembly structure, so that the filling and dirt isolating device is convenient to mount and dismount and convenient to use; the four steel tube cages are connected end to end into a rectangular shape through the spherical hinged joints, and the steel tube cages are connected through the unidirectional hinged joints, so that the deformation capacity of the steel tube cages is improved, and the shearing force, the bending moment and the torque of the whole system under the action of storms are weakened; the sand filling efficiency is high by adopting the six-way sand filling converter and filling the multi-channel sand into the soil engineering pipe bag; the end face sets up at steel pipe cage frame lower extreme and separates dirty curtain, is convenient for restrict the sand water mixture of geotechnological pipe bag discharge when filling sand in certain extent, reduces the diffusion risk of pollutant. The self-floating assembly type geotextile tube bag filling construction and dirt isolation method is convenient to operate, adopts a self-floating assembly type structure, is compact in structure, convenient to assemble and disassemble, can be beneficial to sand filling operation of geotextile tubes, and is high in construction efficiency and low in use cost; and can carry out physical isolation to the sand water mixture of geotechnological pipe bag filling in-process, show the diffusion risk of reduction pollution, safe and reliable.
Drawings
FIG. 1: schematic diagram of the principle of the method of the invention;
FIG. 2: the invention discloses a structural schematic diagram of a six-way sand filling converter;
FIG. 3: the invention discloses a structural schematic diagram of a steel tube cage.
Detailed Description
The following description of the embodiments of the present invention is made with reference to the accompanying drawings 1 to 3:
as shown in fig. 1-3, a self-floating fabricated earth tube bag filling construction and dirt isolation method comprises the following steps:
s1, building a self-floating platform:
according to the design requirement of the dike, four steel tube cages 1 are assembled, and foam floating bodies 10 are embedded in the steel tube cages 1, so that the operating platform of the system can float on the water surface; and then the four steel tube cages 1 are connected end to end through the spherical hinges 7 to form a rectangular shape, the double-channel corner supports 6 are installed on the inner sides of the joints of the two adjacent steel tube cages 1 in the four steel tube cages 1, the connection strength of the platform at the turning position is enhanced, the structural stability and the safety of the platform under the action of wind waves in severe weather are guaranteed, and the self-floating platform is constructed.
Wherein, the steel pipe cage 1 is by the cage structure that a plurality of steel pipe combination welding formed to by first section cage 11, middle section cage 12 and back end cage 13 are constituteed, between first section cage 11 and middle section cage 12, all be connected through one-way articulated joint 14 between middle section cage 12 and the back end cage 13, first section cage 11 front end, back end cage 13 tail end all are provided with ball joint 7 and realize that the ball joint between two steel pipe cages 1 is articulated. The middle section cage 12 is provided with a plurality of, and a plurality of middle section cage 12 end to end becomes linear structure, and all connects through one-way articulated joint 14 between two middle section cages 12. The four steel tube cages 1 are connected and assembled by the ball joints 7, so that the platform has an omnidirectional rotation reserved space at the turning position, and the shearing force, the bending moment and the torque generated by the whole platform under the action of external force are weakened. Meanwhile, multiple sections in the steel tube cage 1 are connected through the one-way hinged joints 14, so that a certain mobility of a single side of the operating platform under the action of waves is ensured, the shearing force, the bending moment and the torque generated by the whole platform under the action of external force are weakened, the displacement in the left and right directions is restrained, and the integrity of the platform is ensured.
S2, positioning and fixing the self-floating platform:
firstly, towing the self-floating platform to a preset water area by using a tugboat, throwing out all the platform-fixed outer splayed anchor cables 8 arranged outside the steel pipe cage 1, positioning and lofting platform-fixed outer splayed anchor cable 8 fixing points of the self-floating platform by using a total station, and then tightening all the platform-fixed outer splayed anchor cables 8 to complete the positioning and fixing work of the self-floating platform on the water surface.
The method comprises the following steps of (1) positioning and lofting by using a total station, wherein the specific method comprises the following steps: a reflecting prism is fixedly placed at the fixed point of the platform fixing outer splayed anchor cable 8 of the self-floating platform to serve as a front view mirror, a rear view mirror is placed at any flat position on land, and the position coordinates of the fixed point of the outer splayed anchor cable 8 of each platform are measured by the total station aiming front view mirror, so that the positioning and lofting of the platform fixing outer splayed anchor cable 8 are completed.
S3, installing the soil engineering pipe bag and the filling device:
the geotextile tube bags 2 are transported to the internal area of the self-floating platform to be unfolded and arranged, after the geotextile tube bags 2 are positioned in the water, the geotextile tube bags 2 are pulled and fixed at the inner sides of the four steel tube cages 1 by the splayed pull cables 21, and positioning and sinking are realized, so that the geotextile tube bags 2 are sunk at fixed points at preset positions and do not displace in the sand filling process.
After the hopper barge 5 is loaded with sand and stone, water and slurry in the nearby water area are pumped by a suction pump and pumped into the hopper barge 5 to be mixed with the sand and stone to form a sand-water mixture.
Then, a plurality of buoys 41 are sleeved on the sand conveying pipeline 4, so that the sand conveying pipeline 4 can float on the water surface, and the installation and connection are convenient. If the float bowl 41 is not arranged, the middle part of the sand conveying pipeline 4 is arranged below the water surface, the whole sand conveying pipeline 4 is not on a horizontal line any more, and the conveying difficulty of sand slurry and the like is increased; meanwhile, the sand conveying pipeline 4 is arranged below the water surface and is easy to collide and wind with nearby operation ships such as a silt barge 5 and a sand dredger, and operation risks are caused.
A sand pump 42 is arranged at the rear end of the sand conveying pipeline 4 and is arranged in the sand-water mixture stored by the sand barge 5; install six-way sand filling converter 3 on the platform that floats to on the sand outlet of six-way sand filling converter 3 passes through the sand filling mouth of pipe connection to geotechnological pipe bag 2, install the front end of sand conveying pipeline 4 on the sand inlet of six-way sand filling converter 3.
Wherein, the six-way sand filling converter 3 is provided with one and advances sand mouth and five sand outlets, the six-way sand filling converter 3 advance sand mouth on be connected with into sand pipe 31, the end that advances sand pipe 31 links to each other with 4 one ends of sand conveying pipeline, the six-way sand filling converter 3's five sand outlets, including a main sand outlet and four vice sand outlets, be connected with main sand pipe 32 on the main sand outlet, all be connected with vice sand pipe 33 on the vice sand outlet, main sand pipe 32 is connected on the left side or the right side of geotechnique's pipe bag 2 and is link up with geotechnological pipe bag 2 is inside, four vice sand pipes 33 are connected respectively on the upper and lower both sides of geotechnological pipe bag 2 and link up with geotechnological pipe bag 2 is inside. The left side or the right side end face of the geotechnical pipe bag 2 is provided with a main sand filling port, the upper side end face and the lower side end face of the geotechnical pipe bag 2 are respectively provided with two auxiliary sand filling ports, the tail end of the main sand outlet pipe 32 is connected to the main sand filling port, and the tail ends of the four auxiliary sand outlet pipes 33 are respectively connected to the four auxiliary sand filling ports.
S4, building a sewage separation system:
a hanging plate is arranged below the steel tube cage 1, a plurality of hanging holes are equidistantly arranged on the hanging plate, a dirt isolating curtain 9 is arranged below the steel tube cage 1 outside the geotechnical tube bag 2, a plurality of hooks arranged at the upper end of the dirt isolating curtain 9 are respectively clamped in the hanging holes of the hanging plate, and the dirt isolating curtain 9 is in a closed-loop wall shape with the head and the tail connected; and a plurality of dirt-separating curtain plumbous pituitary bodies 91 are arranged at equal intervals on the lower side of the dirt-separating curtain 9, so that the dirt-separating curtain 9 can be freely stretched and unfolded to form a separating system.
S5, installing the safety protection device of the self-floating platform:
the operation protective guard is arranged on the upper end face of the steel pipe cage frame 1 of the self-floating platform, and rails of the operation protective guard are arranged by adopting cross rods, so that the operation protective guard can be used for tying and hanging safety ropes and is convenient for walking operation when tying and hanging the safety ropes.
S6, filling and filling construction of the soil engineering pipe bags:
starting a sand pump 42 and filling a sand-water mixture stored in a sand barge 5 into the geotechnical pipe bag 2 through a sand conveying pipeline 4 and the six-way sand filling converter 3; during the sand-gravel slurry filling operation in the geotechnical pipe bag 2, the sand-water mixture enters the geotechnical pipe bag 2 from the main sand outlet pipe 32 and the auxiliary sand outlet pipe 33; after the geotechnical pipe bag 2 is filled to a certain degree, a large amount of sandstone slurry in the water on the upper layer in the geotechnical pipe bag 2 is discharged through a pipe bag water outlet 22 arranged at the upper end of the geotechnical pipe bag 2 and is limited within a certain range by a barrier system formed by the dirt isolating curtain 9, so that the diffusion risk of pollutants is reduced; after the sand and stone in the geotechnical pipe bag 2 are filled, the geotechnical pipe bag 2 is tightened and the sand filling opening is tightened.
S7, disassembling and transferring the filling and dirt isolating system:
the splayed pull-tie cables 21 fixed on the geotextile tube bag 2 are untied one by one, and all parts of the whole filling and dirt isolating system are sequentially removed, so that the whole process of the self-floating assembly type geotextile tube bag filling construction and dirt isolating method is completed; or the whole filling and dirt isolating system is disassembled to obtain only the self-floating platform, then the self-floating platform is transferred to another area to be constructed, and then the installation of the whole filling and dirt isolating system and the filling and dirt isolating construction operation are sequentially completed.
When the self-floating platform is transferred or the wind waves are too large to cause the self-floating platform to rotate and displace, the platform needs to be positioned and adjusted to meet the sinking precision of the soil engineering pipe bag.
If the platform is fixed, the number of the splayed anchor cables 8 is four, and the splayed anchor cables are respectively connected to the four corners of the self-floating platform, the specific operation method of the positioning adjustment comprises the following steps: firstly, loosening a platform fixing outer splayed anchor cable 8 at one corner of the self-floating platform, then tightening the platform fixing outer splayed anchor cable 8 at the diagonal position of the self-floating platform, and further adjusting the up-and-down displacement of the whole self-floating platform; secondly, tightening the platform at the critical position to fix the splayed anchor cable 8, adjusting the integral rotation angle of the self-floating platform, and realizing the positioning of the critical position of the self-floating platform; and finally, tightening the platform fixing outer splayed anchor cable 8 at the other critical position and the platform fixing outer splayed anchor cable 8 at one corner of the self-floating platform to realize the positioning adjustment of the whole self-floating platform.
The invention relates to a self-floating assembly type geotechnical pipe bag filling construction and dirt isolation method.A foam floating body 10 is arranged in a steel pipe cage 1 to improve the buoyancy of the whole system; the whole filling and dirt isolating system device adopts an assembly structure, is convenient to install and disassemble and is convenient to use; the four steel tube cages 1 are connected end to end through the spherical hinge joints 7 to form a rectangular shape, and the steel tube cages 1 are connected through the one-way hinge joints 14, so that the deformability of the steel tube cages 1 is improved, and the shearing force, the bending moment and the torque generated by the whole system under the action of wind waves are weakened; the sand filling efficiency is high by filling sand into the geotechnical pipe bag 2 through the six-way sand filling converter 3 and adopting multi-channel sand filling; the lower end face of the steel tube cage 1 is provided with the dirt isolating curtain 9, so that sand-water mixtures discharged when the geotextile tube bags are filled with sand are limited in a certain range, and the diffusion risk of pollutants is reduced.
The self-floating assembly type geotextile tube bag filling construction and sewage isolation method is convenient to operate, the whole filling and sewage isolation system device adopts a self-floating assembly type structure, the structure is compact, the assembly and disassembly are convenient, the sand filling operation of the geotextile tube can be facilitated, the construction efficiency is high, and the use cost is low; and can carry out physical isolation to the sand water mixture of geotechnological pipe bag filling in-process, show the diffusion risk of reduction pollution, safe and reliable.
The invention has been described above with reference to the accompanying drawings, it is obvious that the invention is not limited to the specific implementation in the above-described manner, and it is within the scope of the invention to adopt such insubstantial modifications of the inventive concept and solution, or to apply the inventive concept and solution directly to other applications without such modifications.
Claims (9)
1. A self-floating assembly type soil engineering pipe bag filling construction and dirt isolation method is characterized by comprising the following steps:
s1, building a self-floating platform:
according to the design requirement of an embankment, four steel tube cages (1) are assembled, foam floating bodies (10) are embedded in the steel tube cages (1), the four steel tube cages (1) are connected end to end through spherical hinges (7) to form a rectangular shape, and double corner supports (6) are arranged on the inner sides of the joints of two adjacent steel tube cages (1) in the four steel tube cages (1) to construct a self-floating platform;
s2, positioning and fixing the self-floating platform:
firstly, towing a self-floating platform to a preset water area by using a tugboat, completely throwing out platform-fixing outer splayed anchor cables (8) arranged on the outer side of a steel pipe cage (1), positioning and lofting platform-fixing outer splayed anchor cable (8) fixing points of the self-floating platform by using a total station, and then tightening all platform-fixing outer splayed anchor cables (8) to finish positioning and fixing work of the self-floating platform on the water surface;
s3, installing the soil engineering pipe bag and the filling device:
the earthwork pipe bag (2) is transported to the inner area of the self-floating platform to be unfolded and arranged, and then a plurality of inner splayed pull cables (21) are fixed at the inner sides of the four steel pipe cage frames (1) to realize positioning and sinking; after sand and stones are loaded on the silt barge (5) to be in place, water and slurry in a nearby water area are pumped by a water suction pump and pumped into the silt barge (5) to be mixed with the sand and stones to form a sand-water mixture; sleeving a plurality of floating cylinders (41) on the sand conveying pipeline (4), installing a sand pump (42) at the rear end of the sand conveying pipeline (4) and placing the sand pump in a sand-water mixture stored in a sand barge (5); the method comprises the following steps that a six-way sand filling converter (3) is installed on a self-floating platform, a sand outlet of the six-way sand filling converter (3) is connected to a sand filling port of a geotube bag (2) through a pipeline, and the front end of a sand conveying pipeline (4) is installed on a sand inlet of the six-way sand filling converter (3);
s4, building a sewage separation system:
a sewage separation curtain (9) is arranged below the steel pipe cage (1) outside the geotechnical pipe bag (2), and the sewage separation curtain (9) is in a closed-loop enclosing wall shape connected end to end; a plurality of dirt separation curtain plumbous bodies (91) are arranged on the lower side of the dirt separation curtain (9) at equal intervals, so that the dirt separation curtain (9) can be freely stretched and unfolded to form a separation system;
s5, installing the safety protection device of the self-floating platform:
an operation protective guard is arranged on the upper end face of a steel pipe cage (1) of the self-floating platform, and rails of the operation protective guard are arranged by adopting cross rods, so that the operation protective guard can be used for tying and hanging safety ropes and is convenient for walking operation when the safety ropes are tied and hung;
s6, filling and filling construction of the soil engineering pipe bags:
starting a sand pump (42) and pouring a sand-water mixture stored in a sand barge (5) into the soil engineering pipe bag (2) through a sand conveying pipeline (4) and a six-way sand filling converter (3); after the geotechnical pipe bag (2) is filled to a certain degree, a large amount of sandstone slurry contained in the water on the upper layer in the geotechnical pipe bag (2) is discharged through a pipe bag water outlet (22) arranged at the upper end of the geotechnical pipe bag (2) and is limited by a blocking system formed by a dirt blocking curtain (9); after the sand and stone in the geotechnical pipe bag (2) are filled, tightening the geotechnical pipe bag (2) and tightening the sand filling opening;
s7, disassembling and transferring the filling and dirt isolating system:
the method comprises the following steps of (1) unfastening a plurality of internal splayed pull-tie cables (21) fixed on the soil engineering pipe bags (2) one by one, and then sequentially removing all parts of the whole filling and dirt isolating system, thereby completing the whole process of the self-floating assembly type soil engineering pipe bag filling construction and dirt isolating method; or the whole filling and dirt isolating system is disassembled to obtain only the self-floating platform, then the self-floating platform is transferred to another area to be constructed, and then the installation of the whole filling and dirt isolating system and the filling and dirt isolating construction operation are sequentially completed.
2. The filling construction and dirt insulation method for the self-floating fabricated geotube bag according to claim 1, wherein in step S2, a total station is used for positioning lofting, and the specific method is as follows: a reflecting prism is fixedly placed at a fixed point of the fixed outer splayed anchor cable (8) of the platform of the self-floating platform to serve as a front view mirror, a rear view mirror is placed at any leveling position on land, and the position coordinates of the fixed points of the fixed outer splayed anchor cable (8) of each platform are measured by aiming at the front view mirror through a total station, so that the positioning and lofting of the fixed outer splayed anchor cable (8) of the platform are completed.
3. The self-floating fabricated earth tube bag filling construction and dirt insulation method according to claim 1, wherein four platform-fixed splayed anchor cables (8) are arranged and are respectively connected to four corners of the self-floating platform.
4. The self-floating fabricated geotextile tube bag filling construction and sewage isolation method of claim 3, wherein in step S7, when the self-floating platform is completely transferred or the self-floating platform rotates and displaces due to too large wind waves, the platform needs to be positioned and adjusted to meet the sinking accuracy of the geotextile tube bag; the specific operation method of the positioning adjustment comprises the following steps: firstly, loosening a platform fixing outer splayed anchor cable (8) at one corner of the self-floating platform, then tightening the platform fixing outer splayed anchor cable (8) at the diagonal position of the self-floating platform, and further adjusting the up-and-down displacement of the whole self-floating platform; secondly, tightening the platform at the critical position to fix the splayed anchor cable (8), adjusting the integral rotation angle of the self-floating platform, and realizing the positioning of the critical position of the self-floating platform; and finally, tightening the platform fixing outer splayed anchor cable (8) at the other critical position and the platform fixing outer splayed anchor cable (8) at one corner of the self-floating platform to realize the positioning adjustment of the whole self-floating platform.
5. The filling construction and dirt insulation method for self-floating fabricated geotextile tube bag according to claim 1, it is characterized in that the six-way sand filling converter (3) is provided with a sand inlet and five sand outlets, a sand inlet pipe (31) is connected on the sand inlet of the six-way sand filling converter (3), the tail end of the sand inlet pipe (31) is connected with one end of the sand conveying pipeline (4), five sand outlets of the six-way sand filling converter (3) comprise a main sand outlet and four auxiliary sand outlets, the main sand outlet is connected with a main sand outlet pipe (32), the auxiliary sand outlets are connected with auxiliary sand outlet pipes (33), the main sand outlet pipes (32) are connected to the left side or the right side of the geotextile tube bag (2) and communicated with the inside of the geotextile tube bag (2), and the auxiliary sand outlet pipes (33) are respectively connected to the upper side and the lower side of the geotextile tube bag (2) and communicated with the inside of the geotextile tube bag (2).
6. The self-floating assembly type soil engineering pipe bag filling construction and dirt isolating method according to claim 1, wherein hanging plates are arranged below the steel pipe cage (1), a plurality of hanging holes are formed in the hanging plates at equal intervals, and a plurality of hooks arranged at the upper end of the dirt isolating curtain (9) are respectively clamped in the hanging holes of the hanging plates.
7. The self-floating assembly type soil engineering pipe bag filling construction and sewage isolation method according to claim 1, wherein the steel pipe cage (1) is of a cage-shaped structure formed by combining and welding a plurality of steel pipes, and consists of a first section cage (11), a middle section cage (12) and a tail section cage (13), the first section cage (11) and the middle section cage (12) and the tail section cage (13) are connected through one-way hinged joints (14), and the front end of the first section cage (11) and the tail end of the tail section cage (13) are provided with ball hinges (7) to realize ball hinge connection between the two steel pipe cages (1).
8. The self-floating fabricated geotextile tube bag filling construction and dirt insulation method according to claim 5, wherein a main sand filling port is arranged on the left side end face or the right side end face of the geotextile tube bag (2), two auxiliary sand filling ports are respectively arranged on the upper side end face and the lower side end face of the geotextile tube bag (2), the tail end of the main sand outlet tube (32) is connected to the main sand filling port, and the tail ends of the four auxiliary sand outlet tubes (33) are respectively connected to the four auxiliary sand filling ports.
9. The self-floating assembly type soil engineering pipe bag filling construction and sewage insulation method according to claim 7, wherein a plurality of middle section cages (12) are arranged, a plurality of middle section cages (12) are connected end to form a linear structure, and two middle section cages (12) are connected through a one-way hinged joint (14).
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| CN118639595A (en) * | 2024-08-13 | 2024-09-13 | 中交一航局第一工程有限公司 | Assembly type construction platform and construction method for underwater cofferdam isolation |
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