JPH1060864A - Concrete placement system of dam bank and concrete placement method of dam bank using the same system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to carry concrete and place concrete to a concrete placement area definitely by guiding the concrete which is to be carried at least with one cable crane deviated from the concrete placement area accompanied by the progress of the construction of a bank by means of a hopper. SOLUTION: The concrete which is manufactured in a batcher plant 10, is placed into buckets 21, and 21' which move along a banker line 11. These buckets 21 and 21' are guided on a transportation track of cable cranes 20 and 20'. The concrete transported with the crane 20' is placed directly on a concrete placement area A'. On the other hand, the concrete, which is to be transported with the crane 20 deviated from the concrete placement area A' with the progress of the construction of the bank is further transported to the concrete placement area A' and placed therein by way of a hopper 30. It is, therefore, possible to transport and place concrete to the concrete placement area definitely.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a system for placing concrete in a dam body and a method for placing concrete in a dam body using the system.

[0002]

2. Description of the Related Art Conventionally, as a cable crane used for constructing a dam embankment, a cable crane which is stretched over both banks B and B 'as shown in FIGS. 1 and 2 is known. I have. FIG. 1 shows a mode adopted when a relatively small dam embankment is constructed, in which one end 20a of a cable crane 20 to be stretched is fixed, and the fixed one end 20a is centered. The other end 20b is movable on a circumferential orbit. On the other hand, FIG.
(A) and (b) are of a mode employed when constructing a large-scale dam embankment as compared with the dam embankment in FIG. 1, and two units are provided across both banks B and B ′. A plurality of cable cranes 20, 20 'are stretched. still,
1 and 2, reference numeral 10 denotes a batcher plant, 11 denotes a bunker line, and 20a, 20a ', 20
b, 20b 'are the ends of the cable crane;
Reference numeral 21 'denotes a bucket suspended from a cable crane so as to be able to move up and down.

[0003] Generally, when constructing a dam embankment using a cable crane, it is desirable that the allowable area for transporting concrete by the cable crane is as wide as possible, and that the allowable transport capacity is as large as possible. Environmental facilities are desirable. In particular, when constructing a large-scale dam embankment, a plurality of cable cranes are to be installed at a certain interval in order to provide the desirable environmental facilities as described above.

[0004]

However, in the former embodiment (FIG. 1) described above, only one cable crane 20 is stretched, and it is not possible to satisfy the allowable transport capacity. And has a special function of allowing the other end 20b to move on a circumferential track centered on one end 20a despite being a single cable crane 20. There is a disadvantage that the equipment itself is expensive. In the latter embodiment (FIGS. 2 (a) and 2 (b)), as shown in FIG. 2 (b), concrete will be poured into the concrete placing area A 'near the top of the embankment. In such a case, there is a disadvantage that the cable crane 20 ′ that cannot cope with this occurs, making it impossible to use the equipment effectively, which is uneconomical.

The present invention has been made to solve the above-mentioned drawbacks of the prior art and to solve the problem. The purpose of the present invention is to use a cable crane stretched over both shores simply and effectively. To provide a concrete pouring system for dam embankments that enables reliable transport and pouring of concrete into concrete pouring areas, and to easily and effectively use cable cranes stretched across both banks And
It is an object of the present invention to provide a concrete embankment method for a dam embankment capable of reliably transporting concrete to an area for concrete installation.

[0006]

DISCLOSURE OF THE INVENTION The present invention has been made in view of the above-mentioned object, and its gist is to use concrete for constructing a dam embankment and to put concrete in a predetermined concrete casting area. A system for casting, comprising a batcher plant installed on the shore and producing concrete, and a concrete installed in the batcher plant stretched across both shores and produced in the batcher plant. And a hopper for guiding concrete transported by at least one of the cable cranes deviating from the concrete placing area to the concrete placing area as the embankment construction progresses Means for placing concrete in the dam embankment.

According to this aspect, the concrete carried by the at least one cable crane deviating from the concrete placing area as the embankment construction progresses is guided to the concrete placing area by the hopper means. As a result, a cable crane stretched across both shores can be easily and effectively used, and the concrete can be reliably transported and poured into the concrete placing area.

Another aspect of the present invention is a method of placing concrete in a predetermined concrete placing area using the above-described system, comprising the steps of: producing concrete in a batcher plant; The concrete is transported by a plurality of cable cranes and directly cast into the concrete placing area, and the concrete produced in the above step is separated from the concrete placing area by at least the concrete placing area with the progress of the embankment construction. 1
Transporting by said cable crane, further transporting through hopper means for guiding to said concrete placing area, and placing in said concrete placing area. Concrete casting method.

According to this aspect, the hopper means for guiding the concrete conveyed by the at least one cable crane deviating from the concrete placing area with the progress of the construction of the embankment body to the concrete placing area. The concrete is transported further to the concrete placing area by simply and effectively using a cable crane stretched across both shores. Can be cast.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION In the concrete embankment concrete damping system of the present invention, a batcher plant for producing concrete may be installed on at least one shore, and is installed on both shores. Is also good.

[0011] A plurality of cable cranes for transporting the concrete produced in the batcher plant to a predetermined concrete casting area are provided on both shores at a predetermined interval with respect to the entire bottom portion of the dam embankment. They are handed over, but the number is not limited.

The hopper means guides concrete conveyed by at least one of the cable cranes deviating from the concrete laying area with the progress of the construction of the embankment to the concrete laying area, ie, the cable crane conveyance. Any form may be used as long as it guides the concrete to the concrete pouring area outside the allowable area, and the shape is not limited. The hopper means can be installed at any given interval in the direction opposite to the banks on both banks. As a specific embodiment, an appropriate one such as an embodiment including a hopper that directly receives concrete transported by a cable crane and a belt conveyor that further transports the concrete received in the hopper to a concrete placing area is used. Can be adopted.

In the concrete embankment construction method of the present invention, "conveying concrete by a plurality of cable cranes and directly laying the concrete in a concrete laying area" means that concrete can be transported by a cable crane. It means transporting and casting only in the area. Further, "concrete is transported by at least one of the cable cranes deviated from the concrete placing area as the embankment construction progresses, and further transported through hopper means for guiding the concrete to the concrete placing area, “Putting in the concrete casting area” means that concrete is guided through the above-mentioned hopper means and is poured into the concrete casting area outside the allowable area for transporting the cable crane.

[0014]

Embodiments of the present invention will be described below with reference to the accompanying drawings, but the present invention is not limited to these embodiments.
Here, FIG. 3A is a schematic plan view showing an embodiment of the present invention, and FIG. 3B is a schematic side view showing FIG. 3A in an enlarged manner along line 3b-3b. , FIG. 3 (c) shows FIG.
It is a schematic plan view of (b). 4A to 4C.
FIG. 4 is a schematic side view showing the concrete hopper facility of FIG.

FIGS. 3A to 3C and FIGS.
The concrete embankment concrete embedding system of the present invention shown in (c) is used for constructing a dam embankment (A, A ′), and concrete is transferred to a predetermined concrete embedding area A,
A system for casting concrete at A ', which is installed at the shore B and is a batcher plant 10 for producing concrete.
And a plurality of cable cranes 20, 20 'for stretching concrete stretched across the banks B, B' and transporting the concrete produced in the batcher plant 10 to predetermined concrete placing areas A, A '. Concrete hopper equipment 30 (hopper means) for guiding concrete transported by the cable crane 20 that has deviated from the concrete placing area A ′ as the embankment construction progresses to the concrete placing area A ′; It is provided with.

The batcher plant 10 has a bucket (21, 21) for charging the produced concrete.
1 ') is equipped with a minecart (not shown) which can be loaded and moved along the bunker line 11.

The cable cranes 20, 20 '
As in the conventional case, the buckets 2 are stretched at both sides B, B 'at a predetermined interval, and are loaded on the minecart.
The concrete put in the inside is suspended and transported to predetermined concrete placing areas A and A '.

The concrete hopper equipment 30 is shown in FIG.
As shown in FIGS. 4B and 4C and FIGS. 4A to 4C, the hopper 31 and the assembled post body 32
A belt conveyor 33 that carries the concrete put into the hopper 31 from the hopper 31 and conveys it to the concrete placing area A ′, and is provided along the post body 32 to move the hopper 31 and the belt conveyor 33 upward. And the lifting device 34 of the cable crane 2
The concrete transported by the cable crane 20 is installed at a predetermined interval below the transport track 0, and guides the concrete to the concrete placing area A ′. As described above, each concrete hopper facility 30 guides concrete transported by the cable crane 20 deviating from the concrete placing area A ′ with the progress of the embankment construction to the concrete placing area A ′, that is, The concrete is guided to the concrete placing area A ′ outside the allowable area of the cable crane 20 for transportation. As shown in FIGS. 4B and 4C, the assembling of the post body 32 at the time of adding the post body 32 and the upward movement of the hopper 31 and the belt conveyor 33 by the elevating device 34 are performed in the concrete placing area A ′.
Is carried out in order to appropriately correct the inclination of the belt conveyor 33 caused by the rise of the top surface due to the progress of the casting.

In placing concrete using the concrete placing system for dam body (A, A '), concrete is first produced in batcher plant 10 and can move along bunker line 11. Buckets (21, 2) loaded on a trolley (not shown)
1 '). Next, the buckets (21, 21 ') into which the concrete has been put are used for the cable cranes 20, 2 by the trolley (not shown).
It is guided to the transport trajectory of 0 '. Then, the concrete carried by the cable crane 20 'is directly poured into the concrete placing area A'. On the other hand, the concrete transported by the cable crane 20 which has deviated from the concrete placing area A ′ with the progress of the embankment construction is further transported through the concrete hopper equipment 30 and is placed in the concrete placing area A ′. You.

The two cable cranes 20, 20 '
In the conventional concrete pouring system (FIGS. 2A and 2B) in which the cable crane 20 provided on the downstream side cannot be used at all, the present invention Can transport and cast concrete continuously in the cable crane 20 provided on the downstream side, and two (plural) cable cranes 20, 20 'can be used simply and effectively. It has a remarkable effect. Specifically, in the conventional concrete casting method, only the cable crane 20 'on the upstream side can be used at the time of casting near the top of the embankment. While 70% of the time was used for concrete placing and the remaining 30% was used for miscellaneous transportation, in the concrete placing method of the present invention, the cable crane 20 'on the upstream side was replaced by the conventional method. Even if it is used in the same manner as above, the other cable crane 20 can be used for concrete casting at all times except for the time required for installation work of the concrete hopper equipment 30 (hopper means). As described above, in the concrete placing method of the present invention, two (plural) cable cranes 2 are used as compared with the conventional concrete placing method.
0, 20 'can be used simply and effectively.

[0021]

According to the concrete embedding system of the dam embankment of the present invention, concrete conveyed by at least one of the cable cranes deviating from the concrete pouring area as the embankment construction progresses is carried out by hopper means.
By adopting the mode of guiding to the concrete placing area, it is possible to easily and effectively use a cable crane stretched across both shores, and to transport concrete to the concrete placing area reliably. It has a remarkable effect such as

According to the concrete casting method of a dam embankment of the present invention, concrete transported by at least one of the cable cranes deviating from the concrete casting area as the embankment construction proceeds is transferred to the concrete casting area. By adopting the mode of further transporting via the hopper means for guiding and placing the concrete in the concrete placing area, the cable crane stretched across both shores can be easily and effectively used, and the concrete can be effectively used. Has a remarkable effect that the concrete can be reliably transported and cast into the concrete casting area.

As described above, according to the concrete placing system and the concrete placing method of the present invention, each cable crane can be used easily and effectively even near the top of the embankment, and accordingly, the concrete placing capacity And other remarkable effects such that the construction period can be shortened can be obtained.

[Brief description of the drawings]

FIG. 1 is a schematic plan view showing a conventional concrete pouring system for a dam embankment.

FIG. 2 (a) is a schematic plan view showing another conventional concrete pouring system for a dam embankment, and FIG. 2 (b) is a schematic plan view.
It is a schematic side view which shows (a) along the 2b-2b line.

3 (a) is a schematic plan view showing an embodiment of the present invention, FIG. 3 (b) is a schematic side view showing FIG. 3 (a) on an enlarged scale along line 3b-3b, and FIG. 3) is a schematic plan view of FIG.

4 (a) to 4 (c) are schematic side views showing the concrete hopper equipment of FIG. 3 (b) in an enlarged manner from the direction of arrow 4. FIG.

[Description of Signs] 10 Batcher Plant 11 Bunker Line 20 Cable Crane 21 Bucket 30 Concrete Hopper Equipment (Hopper Means) 31 Hopper 32 Post Body 33 Belt Conveyor 34 Lifting Device A, A 'Concrete Casting Area of Dam Embankment B, B 'shore

Claims (2)

[Claims] 1. A system for placing concrete in a predetermined concrete placing area, which is used in constructing a dam embankment, comprising: a batcher plant installed on a shore for producing concrete; A plurality of cable cranes for transporting concrete manufactured in the batcher plant to a predetermined concrete placing area, and And a hopper means for guiding concrete carried by one of the cable cranes to the concrete placing area. 2. A method for placing concrete in a predetermined concrete placing area using the above system, comprising: a step of producing concrete in a batcher plant; Transporting the concrete by a cable crane and placing it directly in a concrete placing area; Transporting through a hopper means for guiding to the concrete placing area, and placing the concrete in the concrete placing area. .