JPS6334259B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an apparatus for treating slime deposited in an excavated trench when constructing an underground structure such as an underground continuous wall using a muddy water excavation method.

[Prior art]

To construct an underground continuous wall, such as an underground water stop wall, using the muddy water excavation method, normally, concrete columns are created underground in advance at predetermined intervals, and the spaces between the concrete columns are excavated using the muddy water excavation method. Underground water-stop walls will be constructed one by one using cast-in-place concrete.

At this time, if the slime deposited in the excavation trench, especially the slime deposited near the concrete columns, is not sufficiently removed, the newly poured concrete wall (rear panel) and the existing concrete columns (preceding panel) will need to be thoroughly removed. The watertight connection with the row panel) becomes incomplete, causing problems such as water leakage from that part.

For this purpose, for example, Japanese Patent Laid-Open No. 137808/1983 discloses a technique for removing slime. However, in such known technology, the movable frame itself is locked in the excavation groove, and the processing machine body having the cutter wheel and the suction port is moved within the frame of the movable frame, so the movement range of the cutter wheel is limited. It was restricted within the framework of the moving frame, and it was not possible to move the cutter wheel close to the existing concrete column.

[Purpose of the invention]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a slime treatment device for use in muddy water excavation construction, which can easily and reliably treat slime deposited near existing concrete columns, that is, near the ends of excavated trenches.

[Structure of the invention]

According to the present invention, excavation is carried out by a mud excavation method,
In the slime processing equipment that processes the slime accumulated in the excavated groove before concrete is poured into the excavated groove, the lower structure consists of an upper structure and a lower structure suspended by separate ropes. is equipped with a submersible pump and a rotating bit for discharging the slime, and the superstructure moves the suspension rope of the substructure toward the trench edge relative to the superstructure to force the substructure toward the trench edge. The upper structure is provided with a moving device and has a lock plate for fixing to the side wall of the excavation trench and an actuating device for the lock plate.

[Function and effect of the invention]

Accordingly, the upper structure is secured to the side walls of the trench by the locking plate, and the moving device is activated to move the lower structure toward the end of the trench. Since the lower structure is suspended by a separate rope from the upper structure, this movement is extremely simple and does not affect the operation of each piece of equipment. As the lower structure moves toward the edge of the excavated groove, the slime deposited near the edge of the excavated groove is sufficiently stirred by the rotating bit, sucked in by the pump, and discharged. Therefore, according to the present invention, the slime can be treated up to the vicinity of the edge of the excavated groove, and the excavation work can also be performed in the same manner as in the prior art.

[Preferred embodiment]

In carrying out the present invention, it is preferable that the lower structure moving device move a rope suspending the lower structure using a cylinder provided in the upper structure, thereby moving the lower structure.

Preferably, the lock plate is actuated by a known cylinder and link actuator.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

First, in order to better understand the present invention, the mode of operation will be explained with reference to FIGS. 1a to 1i.

As shown in Fig. 1a, on the ground 1 on which the underground water stop wall is to be constructed, concrete columnar bodies (preceding panels) 2, 2 are made of cast-in-place concrete at a predetermined interval, and crushed stone 3 is applied around them. The purpose of the crushed stone 3 is to prevent the concrete columns 2, 2 from falling and to prevent mud etc. from adhering to the walls of the concrete columns 2, 2.

Next, the space between the concrete columns 2 is excavated using the mud excavation method. The muddy water excavation device 6 that carries out the muddy water excavation method is suspended by a wire rope from a turret 5 erected on a traveling body 4 that runs between concrete pillars 2, 2, and excavates underground using a drilling blade 7 provided thereon. At the same time, the excavated waste is sucked up by a pump and discharged to the ground via a hose 8. This mud water excavation device 6 performs underground excavation in the manner shown in FIG. 1 b, c, and d in order.

Figure 1e shows the state where excavation has been completed, with slime 10 (slime also includes crushed stones, etc.) deposited in the excavation groove 9, and the excavation groove 9 has been removed before concrete is placed. Eliminate this slime 10.

First, as shown in FIG.
A wall cleaning machine 15 suspended by 4 scrapes off mud adhering to the wall surface of the concrete columnar body 2. After the slime has settled, the slime processing device 13 is lowered to the bottom of the excavation trench 9 and the slime 10 deposited on the trench bottom is pumped up to the ground, as shown in FIG. 1g. The slime processing device 13 is suspended by wire ropes 16 and 17 from a turret 12 erected on a traveling body 11 that runs on the ground surface above the excavated groove 9. By moving the traveling body 11 along the excavated groove 9, The slime 10 deposited on the bottom of the groove is pumped up to the ground via the hose 8 by a submersible pump provided thereon, which moves sequentially through wire ropes 16 and 17 as shown in FIG. 1g, h, and i. Although the details will be described later, the submersible pump of the slime processing device 13 is connected to the concrete columnar body 2, regardless of the running body 11.
2, press the concrete columnar body 2, 2
Slime 10 deposited nearby is pumped up to the ground by a submersible pump.

2 to 4 show the details of the slime processing apparatus for carrying out the present invention, and the slime processing apparatus is roughly divided into two types:
superstructure 2 with a lock plate to be fixed to
1 and a substructure 22 equipped with a submersible pump and, in this example, a rotating bit for loosening compacted earth and sand.
These consist of wire ropes 16, 16 from the tower 12 of the traveling body 11 separately installed on the ground.
and is suspended by wire ropes 17, 17.

First, the upper structure 21 will be explained. The upper structure 21 includes horizontal frames 23 and 24, and elevating guide plates 25 and 25 are attached to each end of the horizontal frames 23 and 24. One frame 23 has a roller 2 that rolls along it.
A saddle 27 with 6 is provided. A pair of guide rollers 28, 28 are provided near both ends of the saddle 27, through which the wire ropes 17, 17 suspending the lower structure 22 pass. A hydraulic cylinder 29 is provided between the horizontal frame 23 and the saddle 27, and the hydraulic cylinder 29 moves the saddle 27 in the left-right direction in the figure, thereby moving the wire rope 1.
The lower structure 22 suspended by 7 and 17 is pressed in the left-right direction, that is, toward the side walls 9b and 9b of the excavated groove 9. The saddle 27 is provided with guide rollers 30, 30 for the hose 18 reaching the ground.

The upper structure 21 also includes a lock plate 3.
1 and 31 are provided, and the lock plate 3
1 and 31 are hydraulic cylinders 3 connected to a pantograph type link machine 33 that expands and contracts while being guided by a guide rod 32 provided between horizontal frames 23 and 24.
4 to approach and separate from the side walls 9a, 9a of the excavated groove 9. An excavation groove 9 is excavated by a traveling body 11 with a slime processing device 13 installed on the ground.
When moving along the lock plate 31,
31 is retracted, and during work, the lock plates 31, 31 are pressed against the side walls 9a, 9a of the excavated groove 9 to fix the device. Additionally, the upper structure 21 is provided with a hydraulic oil tank 35, a hydraulic unit 36, and the like.

Next, the lower structure 22 will be explained. The lower structure 22 includes horizontal frames 37, 38, 39, and elevating guide plates 40, 40 are attached to both sides of the horizontal frames 37, 38, 39. Also, the horizontal frame 37 has sheaves 41, 41
is provided, and wire ropes 17, 17 are stretched around the sheaves 41, 41. It has a submersible pump 42 and a rotary bit 43 supported by horizontal frames 38 and 39, and the rotary bit 43 is rotationally driven by motors 4 and 4 with reduction gears to loosen hard earth and sand. Slime deposited on the bottom (including crushed stones and other earth and sand)
is sucked up and pumped to the ground via the hose 18.
In the illustrated example, two submersible pumps 42 are provided, both of which are connected to the hose 18 through a collection pipe 45, and three rotating bits 43 are provided. Incidentally, if the earth and sand are not solid, there is no need to provide the rotary bit 43.

Figure 5 a, b and Figure 6 a, b show other models for loosening and transporting hardened earth and sand.
Figures a and b show the rotary stirring blade type 43a, and Figures 6a and b show the crawler type 43a.
It is b.

Furthermore, Fig. 7 a and b show the screw type 43
c is shown. In both FIGS. 6a and 6b and FIGS. 7a and 7b, the shoveled earth and sand and the switch are conveyed below the submersible pump 42, which is driven by a drive source 44.

Since the slime processing equipment has the above-mentioned configuration, once the excavation is finished as mentioned above,
A slime processing device 13 is lowered into the excavated trench 9, and while hardened earth and sand is loosened by a rotary bit 43, the slime accumulated on the trench bottom is pumped up to the ground via a hose 18 by a submersible pump 42. During work, lock plates 31 are used to secure the device to excavation trench side walls 9a, 9.
a, and when moving the device along the excavation groove 9, the lock plates 311, 31 are retracted, and the device is moved sequentially via the wire ropes 16, 17 by the traveling body 11 provided on the ground. Perform slime processing. And the end walls 9b, 9 of the excavated groove 9
b, that is, when treating slime near the concrete columns 2, 2, the hydraulic cylinder 29 is operated to operate the submersible pump 4 regardless of the ground moving body 11.
2 and a lower structure 22 with a rotating bit 43
is pressed against the end wall 9b of the excavated groove 9 to dispose of the slime deposited in the vicinity.

〔summary〕

As explained above, according to the slime treatment device of the present invention, slime deposited on the bottom of an excavation trench excavated by the muddy water excavation method can be easily and reliably treated. It is possible to reliably dispose of the slime accumulated on the end walls of excavation trenches, that is, near the concrete pillars, which was considered difficult to dispose of, and this results in good results for the next work, concrete pouring, and prevents accidents such as water leakage. can be reliably prevented.

[Brief explanation of the drawing]

FIGS. 1A to 1I are explanatory diagrams showing each step of the muddy water excavation method and slime treatment method applied to the present invention. 2 to 4 show a slime processing apparatus implementing the present invention, and FIG. 2 is a front view;
FIG. 3 is a longitudinal sectional view, and FIG. 4 is a plan view seen from above. FIGS. 5a and 5b are a side view and a plan view showing another example of the earth and sand stirring device, FIGS. 6a and 6b are a side view and a plan view showing a crawler type processing device,
FIGS. 7a and 7b are a side view and a plan view showing a screw type processing device. DESCRIPTION OF SYMBOLS 1... Ground, 2... Concrete columnar body, 3... Crushed stone, 6... Mud water excavator, 9... Excavation groove, 10... Slime, 11... Traveling body, 13... Slime processing device, 1
5... Wall cleaning machine, 16, 17... Wire rope, 1
8... Hose, 21... Upper structure, 22... Lower structure, 25... Lifting guide plate, 27... Saddle,
29...Hydraulic cylinder, 31...Lock plate, 3
3... Pantograph link mechanism, 34... Hydraulic cylinder, 40... Elevating guide plate, 42... Submersible pump, 43... Rotating bit.

Claims (1)

[Claims] 1. In a slime processing equipment that excavates using the muddy water excavation method and processes the slime accumulated in an excavated trench before concrete is poured into the excavated trench, an upper structure and a lower structure are suspended by separate ropes. The lower structure is equipped with a submersible pump and rotating bit for discharging the slime, and the upper structure connects the suspension rope of the lower structure to the upper structure to push the lower structure toward the edge of the excavation trench. A mud water excavation characterized in that the upper structure has a lock plate for fixing to the side wall of the excavation groove, and an actuation device for the lock plate. Slime processing equipment in the construction method.