JP2000096544A - Moving-type sludge outflow-preventing frame - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to mechanically treat sludge or get rid of weeds at a low cost by a civil engineering machine mainly used on land without flowing out sludge, except for a district of dredging work. SOLUTION: The circumference of a movable frame 4 (such as a cage without the bottom) is covered with a flexible covering cloth 1, and a skirt section 2 (having a weight on the lowest end of the skirt section) of the flexible covering cloth 1 longer than the depth of the frame is provided to the lower end to constitute a sludge outflow preventing frame. Dredging work is carried out within range of the sludge outflow preventing frame to prevent the outflow of sludge, etc., flying high during the dredging work. The skirt section 2 is provided to prevent the outflow of sludge, etc., on the bottom. The sludge outflow preventing frame is hung up with crane, etc., to move and set, and the dredging work can be mechanically carried out one after another.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention performs a dredging operation mainly by using an earth-moving machine (backhoe, bucket, etc.) used on land. (Fig. 1)

[0002]

2. Description of the Related Art Conventionally, dredging of sludge and sediment on the bottom of a lake, the bottom of the sea, and the bottom of a river is mainly performed by a civil engineering machine used on land.
Lakes, narrow harbors, and rivers were turbid due to soaring sludge, and creatures living in the water could be killed. Therefore, the method of dredging work in the above-mentioned place was limited. In addition, when dredging sludge with a pump, etc., a large amount of water must be sucked up at the same time, resulting in large-scale sedimentation tanks for sedimentation of large amounts of turbid water, and a wide area for sedimentation ponds must be secured. Was. At work sites near urban areas where large sites cannot be prepared, dredging methods are even more limited.

[0003]

Therefore, according to the present invention, dredging work is carried out mainly by using an earth-moving earth-moving machine (backhoe, bucket, etc.), and spillage of sludge or the like which rolls up and spreads during the dredging work. The purpose is to perform prevention at low cost. Also, in order to prevent the spread of sludge at the dredging point, expensive sheet pile driving work is unnecessary. Since a civil engineering machine having a bucket or the like is used, draining before sludge or the like is sent to a land-based treatment plant can be sufficiently performed.

[0004]

The sludge spill prevention frame C is
The outside is covered with a flexible shielding cloth 1 outside the frame 4 of FIG.
And the length of the secured side and the flexible shielding cloth 1
It is longer than the depth of the frame 4 (deeper than the depth of the dredging), and is made up of a bottom portion forming a skirt portion 2 with a weight attached to the end of the flexible shielding cloth 1. The weight of the skirt portion 2 and the flexible shielding cloth 1 prevent sludge and the like that have risen during the dredging work from flowing out from the bottom. This is called a movable fixed sludge spill prevention frame. FIG.
Plug-in sludge spill prevention plate 1 vertically divided in 3
If the slide 3 is previously set in the sludge spill prevention frame, the plug-in type sludge spill prevention plate 13 moves up and down according to the shape of the bottom, so that the skirt portion 2 at the bottom becomes unnecessary.
Similarly, in FIG. 15, if the folding-type bellows-type sludge comb-out prevention frame plate 12 is installed in advance in the sludge-spill-out prevention frame, the bellows-type sludge loss prevention plate 12
Moves to the top according to the shape of the bottom projection. or,
When the shape of the bottom is a concave portion, sludge and the like are prevented from flowing out from the bottom within a width of one folding plate, so that when the bottom has little undulation, the skirt portion 2 at the bottom becomes unnecessary. . When the work is performed on a large scale, the sludge spill-out prevention frame D is composed of the buoyant material 7, the weight 8, and the flexible shielding cloth 1 as shown in FIGS. (Again, the length of the flexible shielding cloth should be longer than the dredging depth.) This is called a movable free sludge spillout frame.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The size of a flexible shielding cloth sludge spill-prevention frame C is determined according to the conditions of lakes, rivers, ports, and the capabilities of machinery used. When the work inside the flexible shield cloth sludge spill prevention frame C is completed and the turbidity in the water is eliminated, the flexible shield cloth sludge spill prevention frame C is moved to the next work place. At this time, the flexible shielding cloth sludge outflow prevention frame C moves using a crane or the like. If it takes time to settle the sludge and cannot move the sludge spillover prevention frame C made of flexible shielding cloth efficiently, make several sludge spillout prevention frames C made of flexible shielding cloth, The work inside the flexible shield cloth sludge outflow prevention frame C is performed in order. The work is completed first, and the turbidity-free frames in the flexible shielding cloth sludge outflow frame C can be successively moved to increase the working efficiency.
Also, when the work is difficult due to the inclination of the sludge outflow prevention frame C made of flexible shielding cloth due to the situation at the bottom of the work place, the spud (post) 3 of FIG. , The inclination can be adjusted. The spuds (posts) 3 can be used to install the flexible shielding cloth sludge prevention frame even when the flow of the work place is sudden and there is a concern that the flexible shielding cloth leakage prevention frame C may flow out and tilt. The outflow and inclination of C can be prevented. Also, when the tide rises and the depth has to be adjusted, the spud (post) 3 is moved up and down as far as the length of the skirt portion 2 allows. Regarding the lifting and lowering device 5 of the spud (post) 3, a wire winding system, a mechanical system (ratchet type, rack, pinion gear type), a cylinder type (hydraulic and pneumatic type) and the like can be considered. ,
Select from the viewpoint of cost, work efficiency and safety. (Figure 2
In the case of the above, a wire winding method is used.) Driftwood or floating matter comes into contact with the outside of the sludge outflow prevention frame C made of a flexible shielding cloth, and the flexible shielding cloth 1 may be damaged or may be flexible. If the shielding cloth 1 is inconvenient to perform the work, instead of the flexible shielding cloth 1, FIG.
The dredging work is performed by installing the sludge outflow prevention steel plate 6 shown in FIG. Driftwood and floating material is a little, flexible shielding cloth 1,
When it is not necessary to replace the sludge spill prevention steel plate 6, a protective plate 11 (such as a wire mesh) is provided in front of the flexible shielding cloth 1.
Is installed to protect the flexible shielding cloth 1. The depth of the protective plate 11 is such that driftwood or suspended matter is
Not to damage the water depth. When a large-scale dredging operation is performed, a sludge outflow prevention frame D is configured by a buoyant material 7, a flexible shielding cloth 1 and a weight 8 as shown in FIGS. When the degree of freedom increases as the buoyancy object 7 hinders the work due to the wind and the tide, the spuds (posts) 3 shown in FIGS. 10 and 11 are provided to suppress the movement of the buoyancy object 7. Spud (post)
To fix 3, tighten the rope 9 (or wire)
And anchor with anchor. At this time, driftwood and suspended matter,
When there is a risk of damaging the flexible shielding cloth 1, a protective plate 11 is installed before the flexible shielding cloth 1 to protect the flexible shielding cloth 1. After all, the depth of the protective plate 11 is to a depth at which driftwood or suspended matter does not damage the flexible shielding cloth 1. When moving to the next work place after moving the dredging work place, always work while wrapping the previous work place. If the depth of the completed work place is deeper than the skirt 2, the sludge may flow out from the bottom. There is. At that time, according to the depth of the part where the work was completed,
The additional sludge spill-prevention frame 10 is attached to the sludge spill-prevention frame C so that the sludge does not flow out from the bottom of the completed area.

[0006]

According to the present invention, dredging work can be carried out flexibly and inexpensively because mainly a land-based civil engineering machine is used. There is no need to draw up a large amount of waste water like dredging work using a pump, and when transporting sludge to a land-based treatment plant, the work can be performed while draining sufficiently, so that waste water can be treated. Can be minimized. In addition, even if some things such as wreckage and wreck appear on the bottom, things that can not be pumped
The dredging work can be performed quickly and reliably. Create a new aquaculture area in the immediate vicinity of the existing aquaculture area or remove weeds and seaweeds quickly and reliably in areas other than the work area, without affecting the water turbidity, etc. Construction can be performed.

[Brief description of the drawings]

FIG. 1 is a side view showing a working situation when a movable fixed sludge spill prevention frame is installed.

FIG. 2 is a side view of the sludge outflow prevention frame C when the flexible shielding cloth 1 is fixed to the outside of the frame 4;

FIG. 3 is a plan view of a sludge outflow prevention frame C when a flexible shielding cloth 1 is fixed to the outside of the frame 4;

FIG. 4 is a sectional view taken along line AA.

FIG. 5 is a sectional view taken along line BB.

FIG. 6 is a perspective view of a sludge spill-prevention frame C in which a flexible slash-prevention steel sheet 6 is used in place of the flexible shielding cloth 1 and a flexible skirt 2 is provided at the lower end. Side view

FIG. 7 is a perspective view of a sludge spill-prevention frame C in which a flexible sloping skirt portion 2 is provided at a lower end portion of the sludge spill-prevention steel plate 6 instead of the flexible shielding cloth 1; Plan view

FIG. 8 is a side view of a sludge spill prevention frame D;

FIG. 9 is a plan view of a sludge outflow prevention frame D;

FIG. 10 shows a spud (post) 3 for the sludge spill prevention frame D.
Side view with

FIG. 11 shows a spud (post) 3 on the sludge spill prevention frame D.
Plan view with

FIG. 12 shows an extension prevention frame 10 when the work area is wrapped.
Side view with the

FIG. 13 is a side view in which a plug-in type sludge outflow prevention plate 13 is provided on a sludge outflow prevention frame.

FIG. 14 is a sectional view taken along line EE.

FIG. 15 is a side view in which a bellows type sludge outflow prevention plate 12 is provided on a sludge outflow prevention frame.

FIG. 16 is a sectional view taken along line FF.

[Explanation of symbols]

1: Flexible shielding cloth 2: Skirt part 3: Spud (post) 4: Frame 5: Spud (post) vertical device 6: Sludge outflow prevention steel plate 7: Buoyancy material 8: Weight 9: Rope (wire) 10: Additional sludge spill prevention frame 11: Protective plate 12: Bellows type sludge spill prevention plate 13: Plug-in sludge spill prevention plate C: Mobile sludge spill prevention frame with frame (movable fixed sludge spill prevention frame) D: With skirt Mobile sludge spill prevention frame without frame (mobile free sludge spill prevention frame)

Claims (9)

[Claims] A method for dredging sludge and sediment, constructing a cultivation area, and removing seaweeds and weeds in a movable sludge spill prevention frame. 2. A movable sludge spill prevention frame according to claim 1, wherein a flexible shielding cloth is used outside the sludge spill frame according to claim 1, and a skirt portion is provided at the bottom of the frame. dredging,
How to create and remove. 3. The mobile sludge outflow prevention frame according to claim 1, wherein the sludge outflow prevention frame is entirely covered with a sludge outflow prevention steel plate, and a skirt portion is provided at the bottom of the frame. , Creation and removal. 4. A movable sludge outflow prevention frame comprising a movable sludge outflow frame formed by a bellows type sludge outflow prevention plate which is folded along the sludge outflow frame according to claim 1.
A method for performing dredging, creation and removal according to claim 1. 5. A method according to claim 1, wherein:
The method for performing dredging, creation and removal according to claim 1 in a movable sludge outflow prevention frame, wherein the movable sludge outflow frame is constituted by a vertically inserted plug-in sludge outflow prevention plate. 6. The sludge outflow frame itself according to claim 1 is constructed of a flexible shielding cloth, a buoyant material, and a weight, and is provided in a movable sludge outflow prevention frame. How to do. 7. A spud (post) for adjusting the depth and preventing the sludge from flowing out at the four corners of the sludge outflow frame according to claim 1, and an up-down movement for moving the spud (post) up and down. The method of performing dredging, creation and removal according to claim 1 in a movable sludge spill prevention frame having a device. 8. The dredging and dredging of claim 1 in a movable sludge spill-prevention frame fitted with a spud (strut) for suppressing the movement of the flexible shielding cloth and buoyant.
How to create and remove. 9. A flexible shielding cloth and an outer surface of a buoyant material for preventing the breakage of the flexible shielding cloth and the buoyant material in the movable sludge outflow frame of the first, second and sixth aspects. 2. A method for performing dredging, creation and removal according to claim 1, wherein a protective plate is provided on the vehicle.