JPS6010010A - Float for sludge dehydration work - Google Patents

Abstract

PURPOSE:To form a drain pathway for dehydration treatment of sludge with good efficiency while keeping the height of a rotary trencher constant by attaching paired right and left-handed blades to both sides of a float having the rotary trencher and an inside space to house weighty materials. CONSTITUTION:A self-propelling vehicle having a winch 6 is set on dams 1 and 2 formed on the outsides of both sides of a reclamation site. A float 9 is dragged alternately by both winches 6 through a dragger 10, e.g., wire, etc., to form many dray pathways 11 on the surface of sludge 8, and dehydration work is performed. The float 9 is provided with an inside space 16a having an opening with cover 16b and paired right and left-handed blades 17b and 17a on its sloped side 16B. Weighty materials (not illustrated) are put in the inside space 16a and the float 16 is dragged while preventing the settlement of the float body 16 by the blades 17a and 17b. The height of the rotary trencher 19 can thus be kept constant all the time and the drain pathway 11 can be formed constantly.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention forms a drainage channel on the surface of muddy material such as dredged sludge in a landfill, for example, and allows water in the muddy material to flow into the drainage channel. In the so-called drench method, a construction method in which the water inside is taken out by natural drainage or pump drainage, etc. to dehydrate the muddy material, a drainage channel is formed on the surface of the muddy material by driving movement along the surface of the muddy material. Regarding the float used.

First, the principle of the mud dewatering method described above is explained. When a drainage channel is formed on the surface of the mud, the water contained in the surrounding mud flows toward the drainage channel, and dewatering due to the flow of this contained water occurs. As a result, cracks occur on the surface of the mud around the drainage channel, and these cracks play the same role as the drainage channel, increasing the amount of water discharged into the drainage channel and increasing the amount of water evaporation due to the expansion of the surface area of the mud. By synergistically, it is possible to dewater extremely efficiently even muddy materials covering vast areas such as landfills. However, with conventional drainage channel formation methods, it takes a long time to construct drainage channels. However, it has the drawback of requiring labor and expense.

In other words, conventionally, in order to form drainage channels with appropriate spacing and arrangement in muddy material over a wide area, for example, an excavating vehicle such as a crane truck equipped with a clam shell (4) was used. 17. In accordance with the heavy excavation work area and the location where a drainage channel (11) is required,
It is common practice to construct a temporary road (22) at appropriate intervals for the excavation work vehicle (22) to run, but as the area of muddy material (8) increases, the total length of the temporary road (@) increases. The distance was large, and it took a lot of time, labor, and money to construct a temporary road, which led to an increase in the construction period, labor, and cost of constructing the drainage channel.

In view of the above-mentioned circumstances, the FL and RJ of the present invention are designed to reliably and stably form drainage channels that are sufficiently wide and as deep as possible on the surface of muddy materials over a wide area without requiring the construction of temporary roads as described above. The object of the present invention is to provide a method for dewatering sludge that can be used in a 70-day period.

The characteristic configuration of the 70-t for mud dewatering method according to the present invention, which was developed to achieve the above object, is that it has a relatively wide flat bottom and slopes upward and outward from both left and right sides of the flat bottom. A wing-like body that generates buoyancy by contact with the surface of the muddy object when moving along the muddy object is attached to the left and right inclined side surfaces of the float main body, which has continuous side surfaces and can sink under its own weight against the muddy object. is installed, and the 70
The float body is equipped with a rotary trench excavator that protrudes below the flat bottom surface, and the mud excavated by this trench excavator is lifted to the side and outside of the float body. The present invention is characterized in that a mud pumping tube for discharging mud is provided, and the effects of the present invention having such a characteristic configuration are as follows.

In other words, for example, a self-propelled vehicle with a winch is placed on both sides of a landfill, and appropriate rigging such as wire is led out from the winch and connected to the float on the muddy material, and the float is pulled by the winch. By moving the UJ and moving the self-propelled vehicles sequentially to drive and move the 70-tons at appropriate intervals on the surface of the muddy material, drainage channels are formed in an appropriate arrangement and pattern on the surface of the muddy material. However, the work scope for creating drainage channels is extremely wide, and special civil engineering work such as the construction of temporary roads as mentioned above is required to form drainage channels for dewatering muddy materials over vast areas such as landfills. This is a great scale that can be carried out labor-savingly and efficiently without any trouble.The wide flat bottom surface and the left and right spikes slide against muddy objects while being in contact with the ground, making it possible to move the entire float without rolling. While running in a stable manner with little to no turbulence, we use a rotary trench excavator that protrudes below the flat bottom surface, regardless of the properties of muddy materials such as moisture content and viscosity.
In fact, it is possible to perform a strong trenching action, and the mud thus picked up is pumped and discharged through the mud lifting cylinder to a laterally outer position K that is sufficiently far away from the discharge path, and the float body is Together with the shaping action of this, it is possible to suppress as much as possible the reduction in the substantial depth of the discharge channel and the narrowing of the substantial width of the drainage channel due to the return flow of mud into the discharge channel. Also, tT
The anti-sludge reaction force accompanying the trenching action of the rotary trencher can be used as the propulsion force for the float, and the float movement 1
The power required for J11 can be saved. As a result of the above, it is possible to reliably and stably form a drainage channel that is sufficiently wide and as deep as possible on the surface of the sludge by one 70-ton movement, and is suitable for dewatering a large amount of sludge over a wide area. can now be carried out in a short period of time and with less labor and expense.

Next, examples will be shown.

As shown in Figures 1 and 2, an outer dam (11) surrounding the reclaimed land is constructed, an inner dam (2) is constructed to appropriately divide the reclaimed land, and a dredger (3) and pipeline (
4), weirs (1
) e (Put it into the soil dumping area (5) surrounded by 21.

A self-propelled vehicle (7) equipped with a winch (6) was placed on each of the dams (1) and (2) on both sides of the soil dumping site (5) to float the muddy material (81K 70-t (9)). , both winches (6) are connected to the 70-tot (9) with rigging (1o) such as wire, and both winches (6) alternately pull the 70-tot (9), and both self-propelled vehicles ( 7) along the dams (1) and (2) at appropriate distances to create a number of drainage channels (11) on the surface of the muddy material (8) in parallel, zigzag, or lattice shapes. Form with suitable arrangement and spacing.

In addition, the dam fl + I (
A drainage channel H is formed along the entire circumference of the drainage channel 21 either at the same time as or after the drainage channel formation by 70-t (9), and all of the drainage channels (Ill + + 13.) are made to communicate with each other.

Thereafter, for an appropriate number of days, such as SO days, the water in the slurry (8) is allowed to flow into the drainage channel (o) + (13), and the water is drained into the drainage channel (o'+ +
The water of H is taken out and the slurry (8) is dehydrated.

Furthermore, if necessary, the process of increasing the depth of the drainage channel (+l + Ql) and dewatering it using the float (9) and excavation vehicle θ2) as described above is carried out seven or more times, and Once the surface of the muddy material (8) has hardened appropriately, the drainage channel (Ill.
+ (The step of increasing the depth of 131 and performing dehydration treatment is 7
The dehydration process of the slurry (8) is completed by repeating the process one or more times.

The 70-t (9) used in carrying out the dewatering method described above is constructed as shown in FIGS. 3 to 5.

Place a suitable heavy object (15) such as sand on the top surface of the internal space.
Lid (16b) so that it can be put in and taken out from (16a)
It has a punch opening, and the bottom surface (6A) is formed into a relatively wide flat surface, and the flat bottom surface (6A)
Inclined side surfaces (16
B) The both inclined side surfaces (16B) and (16B) of the float body, which has a flat-bottomed boat shape as a whole, are formed in series with + (16B).
) are attached to the left and right pair of arcuate bodies (17a) + (17b), and the connecting device (IOA) for the traction rope side is attached so as to be positioned thickly at the front and rear ends, and in order to manage dehydration, etc. In order to carry a worker on board, a frame @phantom having a handrail (21a) and a scaffold board (21b) is attached, so that the float body 06) settles under its own weight against the muddy object (8), and The float body (
The float body (16
The structure is such that the weight of the heavy object (16) in the container 1 can be appropriately changed and set. Furthermore, a rotary trench excavator (l(2)) is installed at a position near the front of the 70-rat main body θ0 in a position protruding downward from the 7-rat bottom surface (16A).

This trench excavator (1) is driven and rotated by a morph (21) in left and right directions, and moves mud from the widthwise center of the float body H to both left and right sides. A pair of spiral screws (19A), (19A), a semi-cylindrical soft mud guide cover (19B) with a downward opening, and a blade (19C) that flips up the muddy material that has been moved to both sides (19C) + (19C) It consists of a pair of screws (
19A) + (19A) as the muddy material is moved to the left and right sides, a trench is dug and the drainage channel (Ill/0
(6). In addition, the muddy material that has been dug up by this trench excavator θ and moved to the left and right sides is lifted and guided to the lateral outer side of the main body θ (to) of the 70-tot body θ, and is then removed from the drainage channel (Ill l l (A pair of left and right mud lifting tubes for discharging onto the muddy material (8) located away from 131)
I (20) is fixedly supported by the float body (11). This mud lifting tube is attached to the float body (11) and lifts the mud lifted up by the blades (19C) (19C). It may be one that guides itself as it is or one that is equipped with a screw inside.

Next, another example will be shown.

The mud to be treated (8) is mainly sludge dredged from ports and rivers and ultra-soft sedimentary soil, but various types can be selected, such as mud from wetlands and ultra-soft ground. The treatment place may be mainly a landfill, or it may be anywhere, such as a wetland, a super-weak area, or a sludge dewatering treatment plant.

Also, 70-) +91 (r-For example, to move the quinch (6) manually on the dam II)? (2) or float (9)
A mud scraping propulsion device 6 such as a remote control type is installed on the float (
Various other means such as self-propelling the robot (9) can be used, and in short, it is sufficient to move the robot by an appropriate drive device (6).

[Brief explanation of drawings]

Figure 1 is a schematic plan view of Paulownia 1 at the processing site, Figure 2 is a schematic vertical sectional view of the treatment site, Figure 3 is a plan view of the float, Figure 4 is a side view of the float, and Figure 5 is Figure 4. V-V line sectional view, No. 6
The figure is a schematic longitudinal sectional view of a conventional processing site. (8)・・Mud, Qe)・・Float book Eid, (11)・・・・Published, Water 1 Raku, (16A)・・・・
・Flat bottom, (16B)...Number 1 side curve,
(17a)・(17b)・・・Diploma body, (yen)・
...Groove Jhl vessel, (+a+)...Mud lifting cylinder. Page 1 0 shots 0 shots 0 shots 0 shots Continued Author Kimio Kikuchi 1-6-17 Doshin, Kita-ku, Osaka City Takenaka Corporation Technical Research Institute Osaka Branch Akira Higashiyama-Yuki 4 Honmachi, Higashi-ku, Osaka City Address: 27 Takenaka Corporation Osaka Main Office Address: Shigeji Fujimoto 2525 Shorenji, Nabari City Address: 2-4-14 Shinmachi, Masaotsu City, Fujita Address: Noda Fire Department 243 Inabacho, Hisai City

Claims (1)

[Scope of Claims] A relatively wide flat bottom surface (16A) and sloped side surfaces (16B)+(16B) are connected upwardly and outwardly from the left and right sides of the seven-rat bottom surface (16A), respectively. (
8) The hr of the 70-ton main body θG) that can settle under its own weight
r left and right inclined side surfaces 6B), (16B) K mud (
Wing-shaped body (17a) that generates buoyancy by contact with the muddy material (8) surface during drive movement along 8)! (17b) is attached to the float body 06), and a rotary trencher (19) is installed in a position protruding below the flat bottom surface (16A). The mud thrown up by the float body (19)
[Sludge cylinder flQl + shi (
)) for the mud dewatering method.