JPH076178B2 - Method and device for installing wave-dissipating root block - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and apparatus for installing a wave-dissipating root block, and more particularly to a method and apparatus capable of efficiently installing a plurality of wave-dissipating root blocks as a group. Is.

[0002]

BACKGROUND OF THE INVENTION Generally, a breakwater including a breakwater installed on a coastline forms a mound by laying rubble on the seabed, and a mound is formed on the rubble mound as a covering block. It is constructed by installing wave block blocks in multiple layers to form a bank.

By the way, this type of breakwater has a tendency to form a large-scale levee body in a place where the water depth is deep recently due to topographical restrictions, and therefore, gravel leveling work and block installation work are difficult. It is becoming a task.

This is because such leveling work and installation work need to be carried out efficiently in order to minimize the influence of working days due to wind waves, etc. This is not only extremely difficult, but also the leveling area including the uneven surface and the block installation area increase in accordance with the scale, and furthermore, since the blocks are installed one at a time, the work efficiency becomes extremely low.

[0005]

Therefore, according to the present invention,
On the mound formed by abandoned stones, first, the blocks are sequentially arranged along the direction orthogonal to the traveling direction of the wave to form the first block row, and then the plurality of rear blocks and these rear blocks are formed. A block group consisting of a plurality of upper layer blocks positioned so as to partially overlap each other is hung together, and each rear block is placed at a predetermined position behind the first block row while the block group is hung. After positioning, lower it onto the mound, and install the second block row by superposing the upper block on each block of the first block row and the rear block, and further follow the same procedure to place the third block behind the second block row. By installing the rows and subsequent rows and forming them as two layers as a whole, it is intended to improve the efficiency of the installation work of the wave-dissipating root consolidation block.

Further, in this case, if the copying block is installed in advance along the wave traveling direction, the efficiency of the installation work can be further improved.

On the other hand, as a device for suspending and installing the wave-dissipating root block as a group, a plurality of rows of operation rods are moved along the longitudinal direction of a support frame suspended from a working machine such as a crane. These operation rods are freely arranged and formed so that they can be simultaneously moved and operated via a link mechanism.On the other hand, a fixing portion for fixing one end of the block suspension rope to the support frame and the other end of the suspension rope A holding mechanism that detachably holds the formed loop portion is arranged along the operating rods of each row at a predetermined interval and in close proximity, and a connecting means that selectively connects the holding mechanism and the operating rod is provided. It is preferable that the above configuration is adopted.

In this case, the holding mechanism is composed of a receiving member having a loop portion insertion groove whose lower part is opened, a cylinder is attached to the receiving member, and a rod member of the cylinder opens and closes the loop portion insertion groove. The connecting means for selectively connecting the holding mechanism and the operating rod includes a handle attached to the rod member of the cylinder and a ridge having an engaging groove provided in a part of the operating rod. It is preferable to configure.

[0009]

[Operation] In the method of installing the wave-dissipating root-hardening block according to the present invention, after the first block row is installed on the mound formed by abandoned stones, the rear block and a part of the rear block are partially installed. A block group consisting of a plurality of upper layer blocks positioned so as to overlap each other, and the rear block is positioned behind the first row block, and a part of the upper block is placed in each of the first block rows. The second block row is installed by overlapping the block and the rear block, and a plurality of blocks are grouped and simultaneously stacked in two layers.

[0010]

[Embodiments] Next, with respect to the method for installing a wave-dissipating root-fixing block according to the present invention, an installation device for installing a tetrapod (trade name) as a wave-dissipating root-immobilization block will be illustrated, and the details will be described below in relation to this apparatus. explain.

1 to 3, an installation apparatus 10 according to the present invention is provided with a support frame 12 whose plane shape is a truss shape using a shape steel or the like.
Is suspended and supported by a working machine such as a crane (not shown) via a wire 14 so as to be moved or positioned.

Below the support frame 12, operation rods 20, 22, and 24 are arranged in three rows via a slide support member 18 provided on a bracket 16 provided along the longitudinal direction thereof. Operation rods 20, 22, 2
The central portion of 4 is connected by a horizontal member 26. Then, by operating the operating rod 32 of the link device 30 arranged in the connecting portion 28 with the operating wire 34, the operating rods 20, 2
It is configured such that 2 and 24 can be collectively moved and operated.

On the other hand, the support frame 12 is provided with a fixing member 38 which is inserted into a hook of the tetrapod to fix one end of a suspension rope 36 for suspending the tetrapod, and a loop portion 40 of the suspension rope 36. A holding mechanism 42 that detachably holds is provided close to each other, and the fixing member 38 and the holding mechanism 42 are arranged along the operation rods 20, 22, and 24 at a predetermined interval.

As is apparent from FIG. 4, the holding mechanism 42 is formed by fixing a receiving member 46 having a loop insertion groove 44 whose lower side is opened to the lower side of the support frame 12, and the receiving member 46 is provided with the receiving member 46. A cylinder 48 is attached, and a rod member 50 slidably mounted on the cylinder 48 opens and closes the loop insertion groove 44.

Further, a handle 52 is attached to the rod member 50 of the cylinder 48 of the holding mechanism 42, and a protrusion 54 provided on the outer periphery of each operating rod 20, 22, 24 in the longitudinal direction is engaged with the handle 52. By selectively engaging with the grooves 56, the rod member 50 of each cylinder 48 individually opens and closes the loop portion insertion groove 44, and the link device 30.
Operation of the horizontal member 26 and the operating rods 20, 22, 2
It is configured such that the respective loop portion insertion grooves 44 can be simultaneously opened / closed via 4.

Next, a procedure for installing the tetrapod as the wave-dissipating root-consolidating block using the installation apparatus 10 thus constructed will be described.

First, the suspension ropes 36, in which the three tetrapods are left standing in a row on the ship and fixed to the respective fixing members 38 in the lower central row of the support frame 12 of the installation apparatus 10,
After inserting it into the tetrapod hook, this suspension rope 3
The rod member 50 of the cylinder 48 is operated with the loop portion 40 of No. 6 positioned in the loop portion insertion groove 44 of the receiving member 46 to close the loop portion insertion groove 44. Then, the handle 52 attached to each rod member 50 is engaged with the engaging groove 56 provided in the protrusion 54 of the operation rod 22.

Next, the tetrapod is hoisted through the installation device 10 by operating the crane, and is suspended and positioned in a direction orthogonal to the wave traveling direction of the mound 60 formed by abandoned stones, and the operating rod 32 of the link device 30 is then positioned. Is operated by the operation wire 34 to simultaneously open the loop portion insertion groove 44 via the operation rod 22, and the tetrapods are allowed to stand. By repeating this operation several times, the first block row A is installed (FIG. 6a).
reference).

When the first block row A is installed, it is preferable that the copying tetrapod α is installed in advance along the wave traveling direction so that the installation work can be performed efficiently. (See dashed line in Figure 7a).

Next, on the ship, in the same manner as described above,
Four tetrapods (rear side blocks) are allowed to stand still in a row, and each fixing member 3 in the lower end row of the support frame 12 of the installation apparatus 10 is placed.
After the suspension rope 36 fixed to 8 is inserted into the hook of the tetrapod, the loop member 40 of the suspension rope 36 is positioned in the loop portion insertion groove 44 of the receiving member 46, and the rod member 50 of the cylinder 48 is positioned. By operating the loop insertion groove 4
Block 4

Next, two tetrapods (upper layer block) are prepared in front of these tetrapods (rear block), and these two tetrapods are successively hung up so that a part of the tetrapod is located on the rear side. After the suspension ropes 36 fixed to the respective fixing members 38 on the opposite end row are inserted into the hooks, the loop portions 40 of the suspension ropes 36 are inserted into the loop portion insertion grooves of the receiving member 46. Four
4, the rod member 50 of the cylinder 48 is operated to close the loop insertion groove 44.

Then, the handle 52 attached to each rod member 50 is engaged with the engaging groove 56 formed in the projection 54 of the operating rods 20 and 24, respectively, and the five tetrapods are operated through the installation device 10 by the operation of the crane. And hang them together as a group. In this case, the rope 36 for suspending the upper-layer tetrapod is not only set shorter than the suspension rope 36 for the rear tetrapod in advance, but also an appropriate length ratio is set in consideration of the unevenness of the leveled stone surface. Needless to say, set to.

Next, the installation device 10 is moved by a crane and lowered into the water, the rear tetrapod is positioned at a predetermined position behind the first block row A, and the installation device 10 is further lowered and the upper-layer tetrapod is moved. Is placed so as to overlap each block of the first block row A and the front block, and the second block row B is installed (FIG. 6).
b and FIG. 7a).

When the installation device 10 is lowered with the rear side tetrapod and the upper layer tetrapod being positioned, the rope 36 suspending these tetrapods is loosened, so that the operating rod 32 of the link device 30 is operated by the operating wire. It is possible to extremely easily and efficiently install the five tetrapods as a group by operating the operation unit 34 to open the loop insertion groove 44 simultaneously via the operation rods 20 and 24 and hoisting the installation device 10 as it is. become.

After the end of the second block row B is installed as shown in FIG. 7a in this way, this time, the installation device 10 is divided into groups of three rear tetrapods and three upper tetrapods. Then, the second block row B is hung up to be installed.

Then, the second block row B is installed in the same manner as the third block row C and the fourth block row D sequentially in the same procedure to form two layers as a whole, so that the wave-blocking root-fixing block is installed. (FIGS. 6c and 6d)
And Figure 7b).

Also, when the tetrapod is installed on a slope or a slope having an uneven portion as shown in FIG. 6c, the upper tetrapod is superposed with the rear tetrapod positioned first, so that two layers are stacked. It can be performed reliably and easily.

[0028]

As described above, according to the method and apparatus for installing a wave-dissipating root-fixing block according to the present invention, a plurality of rear blocks and these rear blocks are arranged in the first block row mounted on the mound. A block group consisting of a plurality of upper layer blocks positioned so that a part of them overlap each other, the rear block is positioned behind the first row block, and a part of the upper block is placed in the first block. The second block row is installed by superimposing each block in the row and the rear block, and a plurality of blocks are sequentially stacked as a group and simultaneously at the same time. Installation work can be accomplished.

Further, even on a slope or a slope having an uneven portion, the rear tetrapod is first positioned and then the upper tetrapod is superposed, so that reliable installation can be carried out. Also, since the blocks can be selectively suspended or the suspended state can be released all at once, the setting work can be facilitated, and therefore, the covering blocks such as the wave root block can be It has various advantages such that the installation work can be performed extremely efficiently.

Although the method of installing the wave-dissipating root-fixing block according to the present invention has been described above in relation to the installation apparatus as a preferred embodiment, the present invention is not limited to this embodiment. Depending on the size of the blocks to be suspended and the number of groups to be formed, the position interval of the operating rod, the number and position interval of the fixing part and the holding mechanism as the suspending means, the length ratio of the suspending rope, etc. are set appropriately. In addition, the opening and closing control of the loop portion insertion groove in the holding mechanism is hydraulically operated to simplify the structure and simplify the handling, etc., within a range not departing from the spirit of the present invention. It goes without saying that the design can be changed.

[Brief description of drawings]

FIG. 1 is a partially cutaway side view showing the relationship between an installation device and a block for implementing the method of installing a wave-dissipating root block according to the present invention.

FIG. 2 is a plan view showing a relationship between the installation device shown in FIG. 1 and blocks.

FIG. 3 is a bottom view of a support frame of the installation device shown in FIG.

FIG. 4 is an enlarged side view of an X section of the installation device shown in FIG.

5 is an explanatory view of the left side surface of the main part of FIG.

FIG. 6 is an explanatory side view showing a procedure for installing a block using the installation device shown in FIG. 1.

FIG. 7 is an explanatory plan view showing a procedure for installing a block using the installation device shown in FIG.

[Explanation of symbols]

10 Installation device, 12 Support frame, 14
Wire, 16 bracket, 18 sliding support member,
20, 22, 24 Operation rod, 26 Horizontal member,
28 connection part, 30 link device, 32 operation rod, 34 operation wire, 36 suspension rope, 38 fixing member, 40 loop part, 42 holding mechanism, 44 loop part insertion groove, 46 receiving member,
48 cylinders, 50 rod members, 52 handles,

Claims (5)

[Claims] 1. A first block row is formed by first sequentially arranging blocks on a mound formed of abandoned stones along a direction orthogonal to the traveling direction of waves.
Then, a block group consisting of a plurality of rear blocks and a plurality of upper layer blocks positioned so that a part thereof overlaps these rear blocks is hung together, and each block group is hung in a suspended state. After positioning the rear block at a predetermined position behind the first block row, lower it onto the mound,
The second block row is installed by superimposing the upper block on each block of the first block row and the rear block, and further, the third block row and the following rows are installed behind the second block row by the same procedure, and as a whole, A method for installing a wave-dissipating root-fixing block, which is characterized in that it is formed in layers. 2. A method for installing a wave-dissipating root-fixing block according to claim 1, wherein a copying block is installed in advance along the traveling direction of the wave. 3. A plurality of rows of operation rods are movably arranged along a longitudinal direction of a support frame suspended from a work machine such as a crane, and the operation rods are connected via a link mechanism. Each row is formed so that they can be simultaneously moved, and a fixing portion for fixing one end of the block suspension rope to one support frame and a holding mechanism for detachably holding the loop portion formed at the other end of the suspension rope in each row. 2. An apparatus for installing a wave-blocking root-fixing block, further comprising a connecting means arranged along the operating rod at a predetermined interval and in close proximity, and further provided with connecting means for selectively connecting the holding mechanism and the operating rod. 4. The holding mechanism is composed of a receiving member having a loop portion insertion groove whose bottom is opened, and a cylinder is attached to the receiving member and the rod member of the cylinder opens and closes the loop portion insertion groove. The apparatus for installing a wave-dissipating root consolidation block according to claim 3. 5. A connecting means for selectively connecting a holding mechanism and the operating rod includes a handle attached to a rod member of a cylinder and a ridge having an engaging groove provided in a part of the operating rod. The apparatus for installing the wave-dissipating root-fixing block according to claim 4, which is configured.