KR20010079234A - Banking Method on Very Weak Soil Using Floating Belt Conveyor System - Google Patents

Abstract

PURPOSE: A filling method of a very poor ground by using a floating belt conveyor is provided to carry out the filling for the very poor ground without any damage of the surface course at a low cost by approaching the ground easily. CONSTITUTION: A filling method of a very poor ground by using a floating belt conveyor includes the step of conveying filling soil materials by mounting a track travelling unit(1) having a belt conveyor(11) and a hopper(12) on a minimum approach way toward a reclaimed land, paving the reclaimed land with construction fibers, paving the construction fibers with the filling soil by a predetermined thickness by mounting floating type equipment(3) on the construction fibers, paving the whole reclaimed land with the filling soil once by moving the floating type equipment, and compacting the whole reclaimed land by repeating the paving work, wherein the floating type equipment includes more than one floating wheel(33) on both sides and a belt conveyor(31) and a hopper(32) respectively mounted on the floating wheels.

Description

Banking Method on Very Weak Soil Using Floating Belt Conveyor System}

Field of invention

The present invention relates to a construction method for filling super soft ground having very weak ground, such as in marine areas. More specifically, the present invention relates to a method of filling a super soft ground by repeatedly laying the fill material with a uniform thickness without destroying the superficial ground of the super soft ground using a floating belt conveyor.

Background of the Invention

In the case of land reclamation on the west or south coast of Korea, since the ground is very weak, landfill material is laid to strengthen the ground. In the case of reclaiming the coast, conventionally, they used sand or santo as landfill materials to transport land, but dredged marine clay, which is easily available from the sea due to cost problems such as transportation costs, was used as landfill material. It is true.

In the case of using marine clay as a buried material, it is necessary to stabilize the ground because its composition has high water content, high compressibility, and consolidation over a long period of time. In order to stabilize the landfill site in the coastal area, sand or sand is laid on the ground. However, since dredged land is ultra soft ground, the equipment and manpower necessary to strengthen or stabilize the ground are not easily accessible.

In other words, because the method of laying the marine clay on dredged landfill is almost impossible for equipment or manpower to access, and the ground is destroyed even under small load, the development of effective landfill method has been studied by many civil engineers. Methods have been suggested. However, the landfill methods proposed so far have not been widely applied because of their shortcomings.

The existing methods of filling landfills are divided into methods of supporting the fill load by improving the surface of landfills and directly filling landfills.

The former method is to decompose or solidify the surface layer corresponding to about 2 to 4 m of the landfill to secure supporting capacity, and then to install the landfill material by using landfill equipment such as wetland ceramics. , Horizontal vacuum drainage method and PTM method. The solidification treatment method is a method that obtains the required support force by expressing the strength in a short period of time by mixing clay and solidified material of landfill in a certain ratio, and has the advantage of simple construction and completion of construction and curing immediately after curing. It is necessary to examine the environmental compatibility of the additives used for solidification. The horizontal vacuum drainage method has the advantage of shortening the construction period by increasing the strength by draining the gap water in the ground by forcibly dehydrating by applying vacuum pressure to both ends after embedding the drain board specially manufactured on the surface in 4 ~ 5 rows. It is expensive and requires review of applicability according to soil quality. PTM method is a method of forming a valley at regular intervals by using a trench equipment for super-wetland to drain water around the trench and drying it. The construction cost is low, but it takes a lot of time to obtain the required ground pressure.

The latter method includes a pumping method, a method of laying by barge, a method of laying by fork lane (or clam shell), and a forced replacement type filling method. The pumping method is a method of diluting a landfill material (mainly using sand) with water by using a pumping line to pump it into a landfill ground, and after the sand transported with water is settled in the water uniformly, the water is drained and landed without destroying the ground. Although it is possible to fill the land quickly without destroying the ground, it is necessary to have on-site conditions for supplying water for piercing the pump ship and diluting sand.

The method of laying by barge is a method of placing landfill material on barge (barge line), moving it by tugboat or Winziangka, and repeatedly placing landfill material to a certain thickness. It must be possible to maintain a constant draft for the flight. The method of laying by fork-lane (or clamshell) is a method of constructing lattice slats in every working radius of the equipment on the landfill ground, and then repeatedly installing the landfill material in thin thickness. Many grid revetments must be constructed. Forced substitution type landfilling method is a method of directly burying using wetland ceramics regardless of shear failure. Although it does not require a separate treatment cost, the thickness to be forcibly substituted is 4-8 m depending on the water content of the landfill. There is a drawback that the processing of the raised base is difficult.

The present inventors have solved all the drawbacks of the conventional landfill methods as described above, and uniformly fill the landfill material without destroying the ground on the super soft landfill surface layer for access of equipment and manpower for ground stabilization treatment on dredged ground. It has been developed a groundbreaking landfill method that can secure the required ground pressure by repeatedly laying it.

An object of the present invention is to provide a new method for filling ultra soft ground, such as coastal landfill area.

Another object of the present invention is to provide an earthwork method that can easily fill the super soft ground by the equipment or manpower easily accessible to the dredged super soft ground.

Another object of the present invention is to provide a method that can be filled without ground destruction of the surface layer of the ultra soft ground.

Another object of the present invention is to provide a method that can be built for reinforcing the ground without any problems, even if the ground is low construction cost and easy construction.

The above and other objects of the present invention can be achieved by the present invention described in detail below.

1 is a schematic diagram of a general track driving device equipped with a belt conveyor and a hopper for supplying fill material to a floating part of the installation part and a floating part equipment for installing a deposit material at a predetermined thickness in ultra soft ground. It is the front layout drawing shown in the figure.

2 is a general track driving equipment equipped with a belt conveyor and a hopper to supply the fill material to the floating equipment of the conveying part, and the ground material for supplying the fill material from the general track driving equipment to the floating equipment of the installation part. It is a front layout diagram schematically showing the floating equipment of the conveying part, and the floating equipment of the laying part for laying the fill material on the ultra soft ground to a certain thickness.

3 is a front view schematically showing the floating equipment of the transport unit for receiving the fill material from the general track driving equipment located on the land and transported to the floating equipment of the installation section.

4 is a front view schematically showing the floating equipment of the laying portion for laying the fill material in a certain thickness on the ultra soft ground.

5 is a side view schematically showing the floating equipment of the installation portion of FIG.

6 is a plan view schematically showing the floating equipment of the installation portion of FIG.

Brief description of the main symbols in the drawing

1: Track track driving equipment on the track 2: Floating equipment in the transport section

3: floating equipment 11, 21, 31: belt conveyor

12, 22, 32: hopper 23, 33: floating wheel

24, 34: pontoon track

Summary of the Invention

The landfill method according to the present invention installs a track conveyor equipped with a belt conveyor and a hopper on a minimum access path for accessing a landfill to be filled, transfers the landfill material, and places the landfill material to be installed. Install a super wet pontoon type driving equipment equipped with a plurality of buoyancy wheels on the geotextile, and install the fill material to a certain thickness by a hopper and a conveyor capable of 360 ° rotation and forward and backward, equipped with the traveling equipment for the wet paper. Moving the ultra-wetland traveling equipment to install the fill material once in the entire landfill to be filled, and repeating the laying operation consists of filling the entire landfill.

At least one floating device for transporting the fill material when the traveling device for the wetland is far from the track driving device may be installed.

The floating equipment for the super wetland and the conveying unit are pontoon-type equipment, and one or more buoyancy supplementary buoyancy wheels (floating wheels) are mounted on both sides of the gear, so that the ground pressure of these equipments is 0.1 kgf / ㎠ or less, so that the geotextile You can apply it anywhere.

The buoyancy wheel is made in a cylindrical shape and filled with air therein because it needs to generate buoyancy. The buoyancy wheel may be made of steel or synthetic rubber. The buoyancy wheel can be prefabricated on the pontoon track.

The traveling equipment for super wetland is equipped with a conveyor that can freely adjust 360 ° rotation and forward and backward, so that the filling material can be laid in a circle. When the installation is completed in the park, it moves to the next area and continues the installation work.

Hereinafter, with reference to the accompanying drawings will be described in detail the contents of the present invention.

Detailed Description of the Invention

FIG. 1 is a general track driving equipment 1 and ultra-soft, which are provided on the land, that is, an access road such as a lake, and are provided with a belt conveyor 11 and a hopper 12 for supplying fill material to the floating equipment of the installation section. It is a front layout diagram schematically showing the floating equipment 2 of the laying portion for laying the fill material on the ground at a constant thickness.

Track running equipment 1 of the track and field equipment is equipped with a hopper 12 and a belt conveyor 11 on a general track driving equipment such as a back hoe or crawler crane, and is carried by a dump truck. The filled fill material is introduced into the hopper 12 by a backhoe, and the fill material is conveyed by the belt conveyor 11.

As shown in FIG. 1, geotextiles are installed on the soft ground to be filled, and the floating equipment 3 of the installation portion is positioned above the geotextiles. In the landfill method of the present invention, geotextiles are laid on landfill soil without surface treatment of super soft ground, which is made of landfill, and landfill material is laid on the geotextiles. As geotextiles, polypropylene mats or polyester mats are generally used.

Floating equipment of the installation portion is a pontoon-type equipment is equipped with one or more buoyancy wheels 33 on both sides thereof, so that the ground pressure of the equipment is 0.1 kgf / ㎠ or less. If the pontoon type equipment has sufficient ground pressure, a separate buoyancy wheel may not be installed. Because of this low ground pressure, floating equipment can be accessed and laid wherever geotextiles are laid. The landfill material is received from the track traveling equipment 1 of the land part by the hopper 32, the landfill material is transferred along the belt conveyor 31, and the landfill material is sequentially installed at the position to be laid. The thickness of the fill material laid by the floating equipment 3 of the laying portion once is preferably in the range of about 10 to 30 cm, the thickness of which is preferably in the range of about 10 to 30 cm, and the thickness of the ground It can be adjusted according to the degree of weakness. Therefore, after laying at such a thickness, the floating equipment (3) moves to the next area to be laid.

When the floating equipment 3 of the installation portion moves to the next area, the floating equipment 2 of the transportation portion is installed between them. Floating equipment (2) of the conveying unit is a device for transferring the fill material from the track running device (1) to the floating equipment (3) of the installation portion, when a long distance can be installed a plurality. Floating equipment (2) of the transfer part is also a pontoon-type equipment, each of which is mounted on one or more buoyancy wheels 23 on the side of the super soft ground. However, the belt conveyor 21 of the floating equipment 2 of the transfer unit may be fixed without rotation.

3 is a schematic front view of the floating equipment 2 of the conveying part. Floating equipment (2) is composed of a pontoon-type traveling device and is equipped with a buoyancy wheel (23) on both sides of the lower, the belt conveyor 21 and the hopper 22 on the upper portion. Floating equipment (2) of the transport unit is a device for connecting the track running equipment (1) of the land and the floating equipment (3) of the installation portion can be installed a plurality of equipment according to the transport distance. This makes it possible to work on land without extensive access, even in widespread landfills. The construction cost will be less.

4 is a schematic front view of the floating equipment 3 of the installation portion, FIG. 5 is a side view thereof, and FIG. 6 is a plan view thereof. As shown, each of the floating equipment (3) is equipped with three buoyancy wheels 33 each to reinforce the buoyancy of the pontoon type track and can reduce the ground pressure of the equipment by buoyancy. The number of buoyancy wheels 33 can be adjusted according to the degree of softness of the landfill ground. Typically, one to three buoyancy wheels 33 on one side of the equipment can be prefabricated, but is not necessarily limited thereto.

The buoyancy wheel 33 is capable of height adjustment by the vertical height adjustment device (not shown) of the shaft to be fixed. That is, by adjusting the height of the buoyancy wheel to adjust the balance (balance) of ground pressure. If the buoyancy wheel is subjected to excessive grounding pressure, the track mounted on the pontoon type is idle and cannot move forward or backward. Therefore, the height of the buoyancy wheel should be adjusted to balance the grounding pressure of the buoyancy wheel and the grounding pressure of the pontoon type track, which can be easily implemented by those skilled in the art.

The buoyancy wheel is made of cylindrical shape and filled with air because it needs to generate buoyancy. The buoyancy wheel can be made of steel or synthetic rubber material. The buoyancy wheel can be mounted prefabricated to conventional pontoon type equipment, and can be attached to the traveling device to enable self-drive if necessary.

Since the belt conveyor 31 of the floating equipment 3 of the installation portion moves freely and rotates back and forth at 360 °, when the conveyor material is laid back and forth while drawing a circle, it is easy to install 10-30 cm uniformly. Do. After the first landfill of the entire landfill is completed in this manner, the process is repeated. In general, when the fill thickness is about 1 to 3 m, the grounding pressure of general equipment is secured. Therefore, the laying work is repeated about 10 to 20 times over the entire landfill.

By constructing according to the method of the present invention, it is possible to easily fill the ground without breaking the surface of the super soft ground.

According to the present invention, the super soft ground can be filled like the coastal landfill area, and equipment or manpower can easily access the dredged super soft ground, and the super soft ground can be filled, and the ground destruction of the super soft ground It is possible to fill in without, and the construction cost is cheap and the construction is easy, no matter how fragile ground has the effect of providing a fill method for soil reinforcement without any problem.

Simple modifications or changes of the present invention can be easily carried out by those skilled in the art, and all such modifications or changes can be seen to be included in the scope of the present invention.

Claims (12)

Installing a track driving device (1) equipped with a belt conveyor and a hopper on a minimum access path for accessing the landfill to be filled; Laying geotextiles on said landfill; Installing the floating equipment (3) of the laying portion on the laid geotextiles and laying the fill material with a certain thickness; Placing the filling material once in the entire landfill to be filled by moving the floating equipment of the laying portion; And Filling method of ultra soft ground using a floating belt conveyor, characterized in that the step of filling the entire landfill by repeating the laying operation. According to claim 1, Floating equipment (3) of the installation portion is floating, characterized in that one or more buoyancy wheel (33) is mounted on both sides, the belt conveyor 31 and the hopper 32 is provided on the upper portion Sedimentation of Super Soft Ground Using a Belt Conveyor. According to claim 2, The track running device 34 of the floating equipment (3) is a pontoon type, super soft using a floating belt conveyor, characterized in that the inside of the steel structure is installed with a partition wall so as to easily receive buoyancy. Geotechnical Method of Soil. The method of claim 2, wherein the buoyancy wheel (33) is made of a cylindrical shape, the inside of the super soft ground using a floating belt conveyor, characterized in that the earthwork method using a floating belt conveyor. The method of claim 2, wherein the buoyancy wheel 33 is installed by adjusting the height so that the grounding pressure of the buoyancy wheel and the grounding pressure of the pontoon type track balances the ground construction method of the super soft ground using a floating belt conveyor. . The method of claim 2, wherein the buoyancy wheel (33) is installed on the one side of the equipment is fixed to the prefabricated method of super soft ground using a floating belt conveyor, characterized in that installed. The method of claim 2, wherein the buoyancy wheel 33 is made of iron, synthetic resin, or rubber material, the earth-filling method of ultra-soft ground using a floating belt conveyor. According to claim 2, The belt conveyor 31 is capable of rotating and advancing to 360 ° and the reverse rotation of the conveyor motor to uniformly install the fill material from the land side side, and then again rotates the conveyor motor forward from the opposite side of the land portion An earthquake drilling method of ultra soft ground using a floating belt conveyor, characterized in that the material is uniformly laid. The method of claim 1, wherein the floating equipment (3) of the installation portion is a pontoon-type equipment earth ground pressure method using the floating belt conveyor characterized in that the ground pressure is 0.1 kgf / ㎠ or less. According to claim 1, When the floating equipment (3) of the installation portion away from the track driving equipment (1), the floating equipment (2) of the conveying portion for conveying the fill material to the track driving equipment (1) Installing at least one between the floating equipment (3) of the laying portion to transfer the fill material transferred from the track traveling equipment (1) to the floating equipment (3) of the laying portion through the transfer portion floating equipment (2) Sedimentation method of ultra soft ground using a floating belt conveyor comprising a. The floating device (2) of the conveying part is characterized in that one or more buoyancy wheels (23) are mounted on both sides, and a belt conveyor (21) and a hopper (22) are provided on the upper side. Sedimentation of Super Soft Ground Using a Belt Conveyor. The method of claim 1, wherein the one laying work is to make the land thickness of the landfill 10 ~ 30 cm, and after the first landfill of the entire landfill land, repeating about 10 to 20 times of laying work is 1 Filling method of ultra soft ground using floating belt conveyor, characterized in that the soil is filled up to about 3 m.