JP4490246B2 - Coral adhesion base cutting method and coral lifting method - Google Patents

Description

  The present invention is a method for cutting out a target coral from a habitat ground in a case where it is necessary to move or move the coral that lives on the seabed to another place, and safely and without damaging the coral. The present invention relates to a method for easily lifting, moving, moving, and a device for the method.

  As a method for moving corals that live on the sea floor to other places, first cut the coral adhesion base from the root using a wire saw, etc., lift the separated coral adhesion base with a wire, and place it on a moving platform The method of transporting to a new installation site has been devised.

  However, according to the conventional method, when the separated coral adhesion base is lifted by the wire, the coral adhered by the wire may be damaged. Moreover, even if it is difficult to cut the coral adhesion base from the root due to the fact that the coral adhesion base is very large, or even if cutting is possible, the hanging bracket cannot be inserted into the cut surface In such a case, the conventional method as described above cannot be performed.

  Furthermore, even when the coral colonies to be relocated are very small relative to the size of the coral adhesion base, if the entire coral adhesion base is cut and transported from the root, it is labor, time and cost aspects. There is a problem that the loss is very large and the efficiency is low.

  The present invention has been made to solve the above-described problems of the prior art, and can be implemented at a low cost. A method for safely and easily moving a coral without damaging the coral, and a method for the same. The object is to provide a method for cutting out a coral adhesion base, a method for lifting a coral, and an instrument used in those methods.

  In the coral adhesion base cutting method according to the present invention, first, on the surface of the coral adhesion base on which the coral to be transferred is laid, an assumed cut line is defined so as to surround only the coral to be transferred. Drill a plurality of holes from the apex of the assumed cut line or from any position on each side that constitutes the assumed cut line to the inside of the coral adhesion base, and all of these holes or some of the holes The expansion means (static hydraulic crusher, wedge, etc.) is inserted in, and pressure is applied in the direction to expand the inner diameter of the hole to cause cracks in the desired direction. It is characterized in that only the raw part is cut off and the cut off coral and its growing part are lifted up.

  When this method is carried out, it is preferable that a diagram that should appear on the surface of the coral adhesion base when the horizontal virtual triangle or the virtual quadrangle is projected vertically downward is an assumed cut line.

  In addition, the "coral adhesion base" here refers to stones, rocks, bedrock, concrete blocks, or parts of concrete structures to which the coral (growing corals) to be relocated has adhered, It means other coral lump to which the growing coral to be transferred is attached and the growing reef-building coral lump (for example, coral coral) itself to be transferred.

  Further, the coral lifting method according to the present invention includes a coral separated from the main body of the coral adhering base and a portion where the coral is formed, a main body in a substantially vertical state, and a foot portion that protrudes from the lower end of the main body in a substantially horizontal direction. A hanger configured to protrude from the upper end of the main body in a substantially horizontal direction, and further, a foot portion is provided in a gap between the main body of the coral adhesion base and the coral settlement portion. The hanger is lifted by pulling up the rigging (wire, chain, etc.) hung on the arm part in a state where the coral and its growing part are held on the foot part.

  According to the coral adhesion base cutting method according to the present invention, the coral to be moved can be safely lifted and transported without being damaged. Even if it is difficult to cut the coral adhesion base from the root, the relocation operation can be carried out without any problem.

  Furthermore, if the coral colonies to be relocated are very small relative to the size of the coral adhesion base, labor, time and cost can be greatly reduced compared to the conventional method, and relocation is very efficient. Work can be performed, and only the corals to be relocated can be selected and relocated appropriately.

  Hereinafter, an embodiment of the “coral adhesion base cutting method” of the present invention will be described with reference to the accompanying drawings. Drawing 1 is a figure showing the example of coral adhesion board 1 and coral 2 (2a-2c) which has grown on it. When the coral 2 (2a to 2c) shown in FIG. 1 is to be moved by the method of the present embodiment, the main body of the adhesion base 1 is not cut from the base of the adhesion base 1 as shown in FIG. , Cut out only the part 3a to 3c of the coral 2a to 2c (the part where the root of the coral 2 is attached to the attachment base 1, and the part around the outer edge of the coral 2) and move it. Transport it ahead.

  Here, a method of cutting out only the growing portion 3 of the coral 2 to be moved from the main body of the adhesion base 1 will be described. First, as shown in FIG. 3, the assumed cut lines 4 (4 a to 4 c) are defined on the surface of the adhesion base 1. Specifically, a diagram that should appear on the surface of the adhesion substrate 1 when either the horizontal virtual triangle 5 or the virtual quadrangle 6 is projected vertically downward is assumed to be an assumed cut line 4.

  Whether a virtual figure to be projected is a “triangle” or a “quadrangle” is determined as appropriate according to the position of the coral 2 on the adhesion base 1 and other conditions. For example, when a part sufficiently lower (10 cm or more) than the root part B of the coral 2 to be moved exists in a certain range around the coral 2 on a part of the surface of the adhesion base 1 (For example, when the coral 2 is deposited near the periphery of the adhesion base 1 as in the case of the corals 2a and 2c shown in FIG. 3 or when the coral 2 is deposited on the inclined surface of the adhesion base 1). In many cases, it is better to select “triangle” as a virtual figure to be projected, and when trying to relocate coral 2 that is growing on a relatively flat portion, such as coral 2b shown in FIG. In many cases, it is better to select “Rectangle” as a virtual figure to be projected.

  Further, the size of the virtual figure to be projected is also appropriately determined according to the size of the coral 2 to be transferred. Specifically, the outer edge of the coral 2 to be moved is set to a size that can surround the outer edge with a margin of at least 5 cm.

  When “triangle” is selected as the virtual figure, the direction of the projected virtual triangle is adjusted, and the two vertices T1 and T2 among the three vertices T1 to T3 of the assumed cut line 4 are substantially the same. The height position is set to be sufficiently lower than the root portion B of the coral 2.

  It is not always necessary to draw a line drawing on the surface of the adhesion base 1 using paint or the like as the work for defining the assumed cut lines 4a to 4c. For example, the minimum marking that can be confirmed by the operator (assumed It is sufficient to scratch the surface of the adhesion base 1 so that important parts such as the vertices of the cut lines 4a to 4c and the intermediate points of the respective sides can be understood.

  When the assumed cut line 4 is defined, a hole having a desired depth is formed from the apex T of the assumed cut line 4 or an arbitrary position on each side toward the inside of the adhesion base 1. FIG. 4 is a diagram illustrating an example of holes to be formed when the planar shape of the assumed cut line 4 is a triangle, and FIG. 5 is a method for forming holes when the planar shape of the assumed cut line 4 is a quadrangle. It is explanatory drawing of.

  When the plan shape of the assumed cut line 4 is a triangle, as shown in FIG. 4, among the three vertices T1 to T3, the vertex T3 that is higher than the vertices T1 and T2 extends vertically downward. And the holes 7b and 7c extending vertically downward from the points on the lines L1 and L2 respectively connecting the vertex T3 and the vertices T1 and T2 which are lower than the vertex T3. , 7d, 7e. The inner diameter of each of the holes 7a to 7e is set to about 4 to 6 cm, and the adjacent interval is set to about 40 to 60 cm.

  Further, in addition to the holes 7a to 7e, one or a plurality of holes (not shown) are made along the virtual horizontal plane H1 passing through the vertices T1 and T2 (for example, in the direction of the arrow V1 shown in FIG. 4). Holes (not shown) are formed one by one or plurally in the horizontal direction (for example, in the directions of arrows V2 and V3 shown in FIG. 4) along virtual vertical planes H2 and H3 passing through lines L1 and L2.

  On the other hand, when the planar shape of the assumed cut line 4 is a quadrangle, as shown in FIG. 5, the vertical direction of the center C of the top end surface M of the adhesion base 1 surrounded by the assumed cut line 4 b is a predetermined depth. A point at a position (dimension about half of the dimension of one side of the quadrangle constituting the assumed cut line 4) is defined as a virtual bottom point N, and each plane between each side of the quadrangle and the virtual base point N A plurality of holes are formed along (virtual tapered surfaces E1 to E4) or along virtual valley lines (lines indicated by broken lines in FIG. 5) connecting the respective vertexes T1 to T4 of the quadrangle and the virtual bottom point N. I can make it.

  Next, insert the tip (expanded part) of the static hydraulic crusher into all the formed holes, or some of them, in the direction of expanding the inner diameter of the holes Apply pressure. Then, cracks occur along the virtual horizontal plane H1, the virtual vertical planes H2 and H3 shown in FIG. 4 or the virtual taper planes E1 to E4 shown in FIG. 5, and as shown in FIG. It is possible to detach only the epiphytic portion 3 of the coral 2.

  In addition, when performing the rock breaking work by the static hydraulic crusher, it is not always necessary to supply pressure to all of the crushers inserted into the holes. For example, in the example shown in FIG. Pressure is applied to the crusher inserted into the hole formed along H1 to cause cracks in the horizontal direction, and then the crusher inserted into the hole formed along virtual vertical planes H2 and H3. Pressure may be supplied to cause cracks in the vertical direction.

  However, on the contrary, when cracks are first generated in the vertical direction and then cracks are generated in the horizontal direction, the spread of the crusher inserted in the horizontal direction is separated from the main body of the adhesion base 1. Since the weight of the part 3 acts and the expanded part is sandwiched, there is a possibility that it cannot be pulled out. It is better to carry out the process in the order in which the cracks occur in the vertical direction.

  Moreover, it is not always necessary to use a static hydraulic crusher for the split rock work. A wedge can be driven into the formed hole, or the split rock work can be performed using a dynamic crusher.

  The coral separated from the main body of the adhesion base by the split rock work and its settled portion are lifted and transported using a hanger 8 as shown in FIG. As shown in the figure, the hanger 8 includes a rectangular frame-shaped main body 8a held in a substantially vertical state, two legs 8b and 8c protruding from the lower end of the main body 8a in a substantially horizontal direction, and a main body 8a. It is comprised by the two arm parts 8d and 8e which protruded from the upper end of the substantially horizontal direction.

  The foot portions 8b and 8c are held in parallel, and each tip portion has a tapered shape. Also, the arm portions 8d and 8e are held in parallel, and a plurality of protrusions 9 for preventing the displacement of the rigging (wire or the like) are provided on the lower surface of each arm portion 8d and 8e. Is formed.

  When using this hanger 8 to lift a coral and its growing part, first hang the lower end of the wire suspended from a marine crane on the arms 8d and 8e, hang the hanger 8 in the sea, and move it. The hanger 8 is moved to the vicinity of the coral. Next, the foot portions 8b and 8c are inserted little by little from the tip portion into the gap between the adhesion base and the coral deposition portion formed by the split rock operation. Then, when the feet 8b and 8c are fully inserted, the wire is slightly wound up, and the hanger 8 is lifted with the coral and its growing portion held on the feet 8b and 8c, and it is kept in the sea until the relocation destination. Move.

  In addition, a chain is wound around the lower surface of the coral separated from the adhesion base and its growing part, a hook is hooked on this chain, the coral and its growing part are lifted with a crane, and moved to a flat part of the seabed near the adhesion base. Then, it is possible to lift the coral and the part where it has grown by using the hanger 8 shown in FIG.

The figure which shows the example of the coral adhesion board | substrate 1 and the coral 2 (2a-2c) which has settled on it. It is explanatory drawing of the transfer method of the coral which concerns on this invention, Comprising: The figure which shows the state which cut | disconnected the growth part 3 of the coral 2 from the adhesion base 1. FIG. It is explanatory drawing of the transfer method of the coral which concerns on this invention, Comprising: Explanatory drawing of the operation | work point at the time of demarcating the assumption cut line 4. FIG. The figure which shows an example of the hole which should be formed when the planar shape of the assumption cut line 4 is a triangle. Explanatory drawing of the formation method of the hole in case the planar shape of the assumption cut line 4 is a rectangle. The perspective view of the hanger 8 used in the transfer method of the coral which concerns on this invention.

Explanation of symbols

1: Coral adhesion base,
2,2a-2c: Coral,
3, 3a to 3c: an epidermal part,
4, 4a to 4c: assumed cut line,
5: Virtual triangle,
6: Virtual rectangle,
7, 7a-7e: hole,
8: Hanger,
8a: body,
8b, 8c: foot,
8d, 8e: arms,
9: Protrusions for preventing slippage,
B: Root part
C: Center
E1 to E4: virtual tapered surface,
H1: Virtual horizontal plane,
H2, H3: virtual vertical plane,
L1, L2: Line,
M: top face,
N: Virtual base point
T, T1-T4: vertex

Claims (2)

On the surface of the coral adhesion base, an assumed cut line is defined so as to surround only the coral to be relocated,
A plurality of holes are drilled from the apex of the assumed cut line or from the arbitrary position of each side toward the inside of the coral adhesion base,
From the main body of the coral adhesion base, by inserting expanding means into all or some of the holes and applying pressure in the direction of expanding the inner diameter of the holes to cause cracks in the desired direction. , Only cut off the coral that is going to be relocated,
A method for cutting out a coral adhesion base, characterized by lifting the separated coral and its growing part.   The coral according to claim 1, wherein when either a horizontal virtual triangle or a virtual quadrangle is projected vertically downward, a diagram that should appear on the surface of the coral adhesion base is an assumed cut line. How to cut out the adhesion base.