Slope leveling member, rubble mound leveling device, and attaching method for slope leveling member

Abstract

To provide a slope leveling member capable of improving the efficiency of slope leveling work.SOLUTION: A slope leveling member 10 is attached to a lower end of a leveling weight 4 for leveling a plane of an underwater foundation rubble mound 6. A lower end of the slope leveling member 10 is provided with a plurality of lower end faces 11B to 15B formed in a stepped pattern according to an inclination angle of a slope 6B of the foundation rubble mound 6. The normal direction of the plurality of lower end faces 11B to 15B is the same as a falling direction A of the leveling weight 4.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present disclosure relates to a slope leveling member, a rubble mound leveling device, and a method for installing the slope leveling member. [Background technology]

[0002] One existing technology used to level the slopes of underwater foundation rubble mounds is the use of leveling weights. In this technology, a slope leveling member is attached to the bottom end of a weight body used to level the top surface (flat surface) of the foundation rubble mound. The bottom surface of the slope leveling member is inclined according to the inclination angle of the slope to be formed, and is fixed to the weight body with a bolt on the top surface of the member. The weight body with the slope leveling member attached is dropped onto the rubble mound by a crane barge to level the slope (for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2021-161674 A Summary of the Invention [Problem to be solved by the invention]

[0004] In the case of the conventional method of leveling a slope using a weight as described in Patent Document 1, when the weight is dropped onto a foundation rubble mound and the slope leveling member of the weight hits the rubble, it is likely to slide downward due to the inclined surface of the bottom end of the slope leveling member. For this reason, the efficiency of achieving the desired leveling of the slope may decrease with the conventional method.

[0005] The present disclosure aims to provide a slope leveling member, a rubble mound leveling device, and a method for installing the slope leveling member that can improve the efficiency of slope leveling work. [Means for solving the problem]

[0006] A slope leveling member according to one aspect of an embodiment of the present invention is a slope leveling member that is attached to the lower end of a leveling weight for leveling the plane of an underwater foundation rubble mound, and the lower end of the slope leveling member is provided with a number of lower end surfaces that are formed in a stepped pattern according to the inclination angle of the slope of the foundation rubble mound, and the normal direction of the multiple lower end surfaces is the same as the falling direction of the leveling weight. Effect of the Invention

[0007] According to the present disclosure, it is possible to provide a slope leveling member, a rubble mound leveling device, and a method for installing a slope leveling member that can improve the efficiency of slope leveling work. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a diagram showing an example of the overall configuration of a rubble mound leveling device according to an embodiment. [Diagram 2] FIG. 1 is a diagram showing an example of a schematic configuration of a slope leveling member according to a first embodiment; [Diagram 3] FIG. 13 is a diagram showing an example of behavior when a conventional slope leveling member is used as a comparative example. [Figure 4] FIG. 1 is a diagram showing an example of behavior when a slope leveling member according to the first embodiment is used; [Diagram 5] FIG. 1 is a diagram showing a first step of a method for installing a slope leveling member according to the first embodiment; [Figure 6] FIG. 13 is a diagram showing a second stage of the method for installing the slope leveling member of the first embodiment. [Figure 7] FIG. 13 is a diagram showing a third step of the method for installing the slope leveling member of the first embodiment. [Figure 8] FIG. 13 shows examples of other inclination angles of the slope leveling member [Figure 9] FIG. 13 is a diagram showing an example of a schematic configuration of a slope leveling member according to a second embodiment; [Figure 10] FIG. 13 is a diagram showing a second stage of the method for installing the slope leveling member according to the second embodiment. [Figure 11] FIG. 13 is a diagram showing a third step of the method for installing the slope leveling member according to the second embodiment. [Figure 12]FIG. 13 is a diagram showing a fourth step of the method for installing the slope leveling member according to the second embodiment. [Figure 13] FIG. 13 shows examples of other inclination angles of the slope leveling member DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] Hereinafter, an embodiment will be described with reference to the accompanying drawings. In order to facilitate understanding of the description, the same components in each drawing are denoted by the same reference numerals as much as possible, and duplicated description will be omitted.

[0010] [First embodiment] The first embodiment will be described with reference to FIGS.

[0011] Fig. 1 is a diagram showing an example of the overall configuration of a rubble mound leveling device 1 according to an embodiment. As shown in Fig. 1, a foundation rubble mound 6 has been formed by previously dumping a large number of rubble stones into water 5 and piling them on the bottom 8 of the water, such as the seabed. The rubble mound leveling device 1 is basically a device for leveling the upper top surface 6A of this foundation rubble mound 6.

[0012] The rubble mound leveling device 1 includes a leveling weight 4 suspended from a wire 7 of a crane 3 of a crane ship 2 so as to be movable up and down. The leveling weight 4 is formed in an elongated shape, and one end 4A in the longitudinal direction is connected to the wire 7, whereby the other end 4B is installed facing vertically downward. Hereinafter, the end 4B of the leveling weight 4 may also be referred to as the "lower end 4B". A plane is formed at the lower end 4B, the normal direction of which is the longitudinal direction of the leveling weight 4. The rubble mound leveling device 1 operates the crane 3 to drop the leveling weight 4 from above downward toward the foundation rubble mound 6 in the water 5, as shown by the arrow A. As a result, the lower end 4B of the leveling weight 4 presses against the top surface 6A of the foundation rubble mound 6, so that the top surface 6A can be leveled to a flat surface.

[0013] The rubble mound leveling device 1 of this embodiment further includes a slope leveling member 10. The slope leveling member 10 is attached to the lower end 4B of the leveling weight 4 when in use. As shown in Fig. 1, a slope 6B is formed at the edge of the foundation rubble mound 6 (the portion to the left of the top surface 6A in Fig. 1) which continuously connects the top surface 6A and the water bottom 8 in an inclined manner. The slope leveling member 10, attached to the lower end 4B of the leveling weight 4, is dropped from above onto the slope 6B of the foundation rubble mound 6 below as shown by arrow A in Fig. 1, thereby pressing against the slope 6B of the foundation rubble mound 6 and leveling the slope 6B into an inclined surface.

[0014] The configuration of the slope leveling member 10 according to this embodiment will be described with reference to Fig. 2 in addition to Fig. 1. Fig. 2 is a diagram showing an example of a schematic configuration of the slope leveling member 10 according to the first embodiment. Fig. 2 is also an enlarged view of a portion including the slope leveling member 10 in Fig. 1.

[0015] 2, the lower end of the slope leveling member 10 is provided with a plurality of lower end faces 11B, 12B, 13B, 14B, 15B formed in a stepped pattern according to the inclination angle of the slope 6B of the foundation riprap mound 6. The normal direction of the plurality of lower end faces 11B to 15B is the same as the falling direction of the leveling weight 4 indicated by the arrow A in FIG.

[0016] Note that "same" as used here is not limited to being strictly the same direction, and a deviation that does not impair the effect of the embodiment is allowed. In other words, "same" may include being approximately the same. For example, even if the falling direction of the leveling weight 4 and the normal direction of the multiple lower end faces 11B to 15B of the slope leveling member 10 are not completely the same direction, they can be treated as being the same direction within the range allowed in manufacturing.

[0017] Moreover, the stepped lower end surfaces 11B-15B of the slope leveling member 10 according to the first embodiment are formed by combining a plurality of blocks. In the example of Fig. 1 and Fig. 2, five blocks 11, 12, 13, 14, and 15 are combined. Each of the five blocks 11-15 is, for example, a plate-shaped member, the thickness of which is in the left-right direction of the paper in Fig. 1 and Fig. 2, and the main surfaces are arranged along the depth direction of the paper. The main surfaces of each block 11-15 are in surface contact with each other and are stacked in the thickness direction in the left-right direction of the paper. The vertical dimensions of each block 11-15 are formed to be different lengths.

[0018] In the example of FIG. 2, blocks 11, 12, 13, 14, and 15 are arranged in this order from right to left on the page. The height positions of upper ends 11A-15A of the blocks 11-15 are aligned, and the upper ends of the blocks 11-15 are connected to the lower end 4B of the leveling weight 4, respectively. The vertical dimensions of the blocks 11-15 are formed to be gradually longer in this order. As a result, when the blocks 11-15 are connected to the lower end 4B of the leveling weight 4, the lower end faces 11B-15B of the blocks 11-15 form a staircase shape that protrudes more stepwise in this order.

[0019] Here, the plane of the lower end 4B of the leveling weight 4 is formed, for example, in a rectangular shape, and only one side of the rectangle is shown in Figures 1 and 2. For example, if the plane of the lower end 4B is a square, the width dimension of the main surface of each of the blocks 11-15 in the depth direction of the paper is formed to a length that fits within the length of one side of the square. Also, the thickness dimension of each of the blocks 11-15 in the left-right direction of the paper is about one-fifth of the width dimension, and the total dimension of the blocks 11-15 stacked in the thickness direction is formed to a length that fits within the length of one side of the square of the plane of the lower end 4B.

[0020] 2, the vertical dimensions of each of the blocks 11 to 15 are formed so that, when the line segment connecting the lower end faces 11B to 15B is regarded as the hypotenuse of a right-angled triangle, the ratio of the height to the base is 1:2. This ratio can be set appropriately according to the inclination angle of the slope 6B to be smoothed.

[0021] Here, the effect of the slope leveling member 10 according to the first embodiment will be described with reference to Fig. 3 and Fig. 4. Fig. 3 is a diagram showing an example of behavior when a conventional slope leveling member 50 is used as a comparative example. Fig. 4 is a diagram showing an example of behavior when the slope leveling member 10 according to the first embodiment is used.

[0022] As shown in FIG. 3, a conventional slope leveling member 50 has an inclined surface 50A at its lower end. The inclination angle of this inclined surface 50A corresponds to the inclination angle of the slope 6B to be leveled. As shown by arrow A in FIG. 3, as described above, the leveling weight 4 is dropped downward from above, and the slope leveling member 50 hits the slope 6B and hits the rubble on the slope 6B. At this time, since the inclined surface 50A at the lower end of the slope leveling member 50 is a plane corresponding to the inclination angle of the slope 6B, the slope leveling member 50 receives an external force along the inclination direction of the slope 6B as shown by arrow B in FIG. 3 due to the reaction force received from the slope 6B by the inclined surface 50A. As a result, as shown by the dotted line in FIG. 3, the slope leveling member 50 and the leveling weight 4 slide down a relatively large distance below the slope 6B along the inclination direction of the slope 6B.

[0023] On the other hand, as shown in Fig. 4, the slope leveling member 10 of this embodiment has a stepped bottom surface, so that the lower end faces 11B-15B of the slope leveling member 10 are not inclined and the normal direction is the same as the falling direction A as shown in Fig. 2. Therefore, when the slope leveling member 10 hits the slope 6B and lands on the riprap on the slope 6B, the magnitude of the component in the inclination direction of the slope 6B of the reaction force that the slope leveling member 10 receives from the slope 6B is relatively smaller than the external force B of the comparative example in Fig. 3. As a result, as shown by the dotted line in Fig. 4, the amount by which the slope leveling member 10 and the leveling weight 4 slide down the slope 6B along the inclination direction of the slope 6B is relatively smaller than that in Fig. 3, and the slope leveling member 10 is less likely to slide down the slope 6B.

[0024] In this way, in the slope leveling member 10 according to the first embodiment, a plurality of lower end faces 11B-15B are provided at the lower end of the member 10 in a stepped shape according to the inclination angle of the slope 6B of the foundation rubble mound 6. The plurality of lower end faces 11B-15B are flat surfaces whose normal direction is the same as the falling direction A of the leveling weight 4. With these configurations, when the bottom surface of the slope leveling member 10 lands on the rubble of the slope 6B, the flat bottom surfaces 11B-15B of the bottom surface are supported by the rubble, suppressing the slope leveling member 10 from sliding down the slope 6B. As a result, the slope leveling member 10 can be reliably landed on the desired area of ​​the slope 6B directly below the leveling weight 4, and the desired area of ​​the slope 6B can be reliably pressed and leveled after the bottom is reached, improving the efficiency of slope leveling work.

[0025] Next, an example of a method for attaching the slope leveling member 10 according to the first embodiment to the leveling weight 4 will be described with reference to Figs. 5 to 7. Fig. 5 is a diagram showing a first stage of the method for attaching the slope leveling member 10 according to the first embodiment. Fig. 6 is a diagram showing a second stage of the method for attaching the slope leveling member 10 according to the first embodiment. Fig. 7 is a diagram showing a third stage of the method for attaching the slope leveling member 10 according to the first embodiment.

[0026] 5, the guide member 30 having step surfaces 31, 32, 33, 34, 35 corresponding to the desired inclination angle of the lower end surface of the slope leveling member 10 is placed on the ground 40 with the step surfaces 31 to 35 facing upward (placement step). The ground 40 is, for example, the deck of the crane ship 2.

[0027] In the second stage shown in Fig. 6, the slope leveling member 10 is positioned by bringing the lower end faces 11B-15B of the slope leveling member 10 into contact with the step faces 31-35 of the guide member 30, respectively, relative to the guide member 30 placed in the placing step (positioning step). Here, each of the blocks 11-15 is placed on the step faces 31-35 of the guide member 30, respectively. As a result, the height positions of the upper ends 11A-15A of the blocks 11-15 are aligned. With the slope leveling member 10 in this state, the leveling weight 4 is brought closer to the slope leveling member 10 from above downward, as shown by arrow D in Fig. 6.

[0028] 7, the leveling weight 4 is lowered from above onto the slope leveling member 10 after it has been positioned in the positioning step, and the slope leveling member 10 is connected to the lower end 4B of the leveling weight 4 (connecting step). Any method can be used to connect the blocks 11-15 to the leveling weight 4 as long as it is a detachable method. For example, bolt fastening, a combination of a pin and a hole, hook-to-hook locking, or a method of welding a pin provided at the upper end of the block to the lower end 4B of the leveling weight 4 can be used.

[0029] As described with reference to Figs. 5 to 7, according to the method of attaching the slope leveling member 10 to the leveling weight 4 according to the first embodiment, the slope leveling member 10 can be attached to the leveling weight 4 only by moving the leveling weight 4 in the vertical direction while the leveling weight 4 is suspended by the crane 3. Conventionally, when attaching a slope leveling member to a leveling weight, it is necessary to lay the leveling weight 4 on the ground 40 once and attach the slope leveling member from the horizontal direction. Therefore, it is necessary to make the area of ​​the ground 40 required for attachment larger by the longitudinal dimension of the long leveling weight 4. In contrast, in this embodiment, the slope leveling member 10 can be attached in a state where the leveling weight 4 is suspended in the vertical direction by using the guide member 30, so that the area of ​​the ground 40 required for attachment can be limited to the size of the footprint of the guide member 30. Therefore, according to the method of mounting the slope leveling member 10 to the leveling weight 4 in accordance with the first embodiment, the space required for mounting the slope leveling member 10 can be reduced.

[0030] Figure 8 shows examples of other inclination angles of the slope leveling member 10. Figure 8(A) shows an example of a combination of blocks where the ratio of height to base is 1:1.5 when the line segment connecting the stepped bottom end faces is considered as the hypotenuse of a right-angled triangle. Figure 8(B) shows an example of a combination of blocks where the ratio of height to base is 1:1.2.

[0031] In Fig. 8(A), blocks 11, 16, 17, 15, and 18 are arranged in this order from right to left on the page. The height positions of the upper ends of the blocks 11, 16, 17, 15, and 18 are aligned, and the upper ends of the blocks 11, 16, 17, 15, and 18 are connected to the lower end 4B of the leveling weight 4, respectively. The vertical dimensions of the blocks 11, 16, 17, 15, and 18 are formed to be gradually longer in this order. As a result, when the blocks 11, 16, 17, 15, and 18 are connected to the lower end 4B of the leveling weight 4, the lower end faces of the blocks 11, 16, 17, 15, and 18 form a staircase shape that protrudes more stepwise in this order. Furthermore, the vertical dimensions of each of blocks 11, 16, 17, 15, and 18 are formed so that when the line segment connecting the bottom faces of each of blocks 11, 16, 17, 15, and 18 is viewed as the hypotenuse of a right-angled triangle, the ratio of height to base is 1:1.5.

[0032] In Fig. 8(B), blocks 11, 19, 20, 18, and 21 are arranged in this order from right to left in the drawing. The height positions of the upper ends of the blocks 11, 19, 20, 18, and 21 are aligned, and the upper ends of the blocks 11, 19, 20, 18, and 21 are connected to the lower end 4B of the leveling weight 4, respectively. The vertical dimensions of the blocks 11, 19, 20, 18, and 21 are formed to be gradually longer in this order. As a result, when the blocks 11, 19, 20, 18, and 21 are connected to the lower end 4B of the leveling weight 4, the lower end faces of the blocks 11, 19, 20, 18, and 21 form a staircase shape that protrudes stepwise in this order. Furthermore, the vertical dimensions of each of the blocks 11, 19, 20, 18, and 21 are formed so that when the line segment connecting the bottom end faces of each of the blocks 11, 19, 20, 18, and 21 is viewed as the hypotenuse of a right-angled triangle, the ratio of height to base is 1:1.2.

[0033] Here, the block 11 with the vertical hatching pattern in Figures 2 and 8 can be used in three combinations: a combination of blocks with a height-to-base ratio of 1:2 as shown in Figure 2, a combination of blocks with a height-to-base ratio of 1:1.5 as shown in Figure 8(A), and a combination of blocks with a height-to-base ratio of 1:1.2 as shown in Figure 8(B). Also, the block 15 with the horizontal hatching pattern in Figures 2 and 8 can be used in two combinations: a combination of blocks with a height-to-base ratio of 1:2 as shown in Figure 2, and a combination of blocks with a height-to-base ratio of 1:1.5 as shown in Figure 8(A). In addition, block 18 having a dot pattern in Figure 8 can be used in two different combinations: a combination of blocks with a height-to-base ratio of 1:1.5 as shown in Figure 8(A), and a combination of blocks with a height-to-base ratio of 1:1.2 as shown in Figure 8(B).

[0034] In the slope leveling member 10 according to the first embodiment, the multiple stepped bottom end faces of the slope leveling member 10 are formed by combining multiple blocks. With this configuration, the inclination angle of the bottom end faces of the slope leveling member 10 can be easily adjusted to match the desired inclination angle of the slope 6B by appropriately combining blocks with different vertical dimensions. This makes it possible to perform slope leveling work corresponding to slopes 6B with various inclination angles, improving the versatility of the slope leveling member 10.

[0035] Furthermore, in the slope leveling member 10 of the first embodiment, by configuring the multiple stepped lower end faces of the slope leveling member 10 to be formed by combining multiple blocks, when the lower end faces are to have multiple inclination angles, some of the blocks can be reused, such as blocks 11, 15, and 18 shown in Figures 2 and 8. This makes it possible to reduce the number of blocks used for the types of inclination angles that are desired to be realized, thereby reducing the manufacturing cost of the slope leveling member 10.

[0036] The slope leveling member 10 of the first embodiment may be configured such that the stepped lower end faces of the slope leveling member 10 are formed from a single member, rather than being a combination of multiple blocks. Even in this configuration, the method of attachment to the leveling weight 4 can be carried out in the same manner as in the example of Figs. 5 to 7. In this configuration, a slope leveling member 10 is prepared separately for each inclination angle of the lower end face, so that the members to be used during slope leveling can be selected quickly.

[0037] [Second embodiment] The second embodiment will be described with reference to FIGS.

[0038] 9 is a diagram showing an example of a schematic configuration of a slope leveling member 100 according to the second embodiment. The schematic configuration in FIG. 9 corresponds to FIG.

[0039] 9, the relative positions of the stepped lower end faces of the slope leveling member 100 according to the second embodiment can be changed. The slope leveling member 100 has a base 110 and a plurality of blocks 111, 112, 113, 114, and 115. The base 110 is connected to a lower end 4B of the leveling weight 4.

[0040] In the example of Fig. 9, the multiple blocks include five blocks 111, 112, 113, 114, and 115. Each of the five blocks 111-115 is, for example, a plate-shaped member similar to the blocks 11-15 of the first embodiment, with the thickness portion extending in the left-right direction of the paper in Fig. 9 and the main surfaces arranged along the depth direction of the paper. The blocks 111-115 are arranged with the main surfaces facing each other and are arranged in the thickness direction in the left-right direction of the paper.

[0041] The multiple blocks 111-115 are installed slidably relative to the base 110 along the extension direction (falling direction A) of the leveling weight 4, as shown by arrows E1-E5. The multiple blocks 111-115 are formed to have the same vertical dimension, for example, and the height positions of the bottom end faces 111B-115B of each block can be changed by adjusting their positions relative to the base 110. The bottom end faces 111B-115B of the multiple blocks 111-115 form multiple stepped bottom end faces of the slope leveling member 100.

[0042] Here, as in the first embodiment, the plane of the lower end 4B of the leveling weight 4 is formed, for example, in a rectangular shape, and only one side of the rectangular shape of the lower end 4B is shown in Fig. 9. Therefore, the upper end surface of the base 110 connected to this lower end 4B is also formed in a rectangular shape with approximately the same shape and area as the lower end 4B, and only one side of the rectangular shape of the upper end surface of the base 110 is shown in Fig. 9. The overall shape of the base 110 is formed in a quadrangular prism shape having four side surfaces extending vertically downward from the four sides of the rectangular shape of the upper end surface. Only one side surface of the quadrangular prism shape of the base 110 is shown in Fig. 9.

[0043] For example, if the plane of the lower end 4B and the upper end surface of the base 110 are square, the width dimension of the main surface of each block 111-115 in the depth direction of the paper is formed to fit within the length of one side of this square. Also, the thickness dimension of each block 111-115 in the left-right direction of the paper is about one-fifth of the width dimension, and the total dimension of the blocks 111-115 arranged in the thickness direction is formed to fit within the length of one side of this square. Also, in the second embodiment, a gap is provided in the thickness direction of each block 111-115 to the extent that each block 111-115 can slide relative to the base 110.

[0044] In the second embodiment of the slope leveling member 100, the relative positions of the multiple stepped lower end faces 111B-115B are changeable, so that the inclination angle of the stepped lower end faces 111B-115B can be adjusted as desired using a single slope leveling member 100, making it possible to accommodate a variety of inclination angles of slopes 6B and improving versatility.

[0045] Furthermore, in the slope leveling member 100 of the second embodiment, a plurality of stepped lower end faces 111B-115B of the slope leveling member 100 can be formed by sliding the plurality of blocks 111-115 along the extension direction of the leveling weight 4 relative to the base 110. With this configuration, a stepped shape with any inclination angle can be more reliably formed while maintaining the normal direction of the lower end faces 111B-115B of the blocks 111-115 in the same direction as the falling direction A of the leveling weight 4.

[0046] Moreover, the vertical dimension of the base 110 is preferably formed to have a length such that, for example, when the multiple blocks 111-115 are slid to the uppermost position relative to the base 110, the lower end faces 111B-115B are housed inside the base 110. This allows the slope leveling member 100 to be made compact when not in use or during storage, and the required storage space can be reduced.

[0047] In the example of Fig. 9, similarly to the example of Fig. 2, when the line segment connecting the lower end faces 111B to 115B is regarded as the hypotenuse of a right-angled triangle, the height position of each block is adjusted so that the ratio of the height to the base is 1:2. This ratio can be set appropriately according to the inclination angle of the slope 6B to be smoothed.

[0048] Furthermore, the slope leveling member 100 includes a holding portion that holds the relative positions of the multiple blocks 111-115. In the example of Fig. 9, an example of the holding portion includes a through hole provided in each of the blocks 111-115 and a bar 116. At least one through hole is provided in each of the multiple blocks 111-115 along the extension direction, and each through hole is formed along the direction in which the multiple blocks 111-115 are lined up.

[0049] In the example of Fig. 9, one through hole 121 is provided in block 111. Three through holes 122A, 122B, 122C are provided in block 112 in order from bottom to top. Three through holes 123A, 123B, 123C are provided in block 113 in order from bottom to top. Three through holes 124A, 124B, 124C are provided in block 114 in order from bottom to top. Three through holes 125A, 125B, 125C are provided in block 115 in order from bottom to top.

[0050] In the slope leveling member 100 of the second embodiment, the bar 116 is inserted into any one through-hole of each of the blocks 111-115, and then inserted into all of the through-holes of the blocks 111-115, thereby making it possible to maintain the relative positions of the blocks 111-115. With this configuration, the relative positions of the blocks 111-115 can be easily maintained simply by inserting the bar 116 into each of the through-holes of the blocks 111-115, and the adjustment of the staircase shape of each block can be efficiently performed.

[0051] 9 shows a state in which one rod 116 is inserted through through hole 121 of block 111, through hole 122A of block 112, through hole 123A of block 113, through hole 124A of block 114, and through hole 125A of block 115. As a result, when the line segment connecting lower end faces 111B to 115B is regarded as the hypotenuse of a right-angled triangle, the relative positions of the blocks 111 to 115 can be maintained so that the ratio of the height to the base is 1:2.

[0052] Next, with reference to Figs. 10 to 12 in addition to Fig. 5, an example of a method for attaching the slope leveling member 100 according to the second embodiment to the leveling weight 4 will be described. Fig. 10 is a diagram showing a second stage of the method for attaching the slope leveling member 100 according to the second embodiment. Fig. 11 is a diagram showing a third stage of the method for attaching the slope leveling member 100 according to the second embodiment. Fig. 12 is a diagram showing a fourth stage of the method for attaching the slope leveling member 100 according to the second embodiment.

[0053] In the first stage, similarly to the first embodiment described with reference to FIG. 5, the guide member 30 is placed on the ground 40 with the step surfaces 31 to 35 facing upward (placement step).

[0054] In the second stage shown in FIG. 10, the slope leveling member 100 is lowered from above with respect to the guide member 30 placed in the placing step, and the lower end faces 111B-115B of the blocks 111-115 are brought into contact with the step faces 31-35 of the guide member 30, respectively. As a result, as shown by arrows F1-F5 in FIG. 10, the blocks 111-115 move upward individually due to the reaction force received from the step faces 31-35. As a result, the positions of the step-like lower end faces 111B-115B of the slope leveling member 100 can be positioned collectively (positioning step). In the example of FIG. 10, the blocks 111-115 are positioned so that the through hole 121 of the block 111, the through hole 122A of the block 112, the through hole 123A of the block 113, the through hole 124A of the block 114, and the through hole 125A of the block 115 are at the same height position.

[0055] In the third stage shown in FIG. 11, the relative positions of the blocks 111-115 positioned in the positioning step are held by a rod 116 as a holding part (holding step). In the example of FIG. 11, one rod 116 is inserted from the horizontal direction, which is the extension direction of each hole, into the through hole 121 of the block 111, the through hole 122A of the block 112, the through hole 123A of the block 113, the through hole 124A of the block 114, and the through hole 125A of the block 115, which are aligned at the same height position, as shown by arrow G. This holds the relative positions of the blocks 111-115. With respect to the base 110 of the slope leveling member 100 in this state, the leveling weight 4 is brought closer to the base 110 from above to below, as shown by arrow H in FIG.

[0056] 12, the leveling weight 4 is lowered from above onto the slope leveling member 100 after it has been held in the holding step, and the base 110 of the slope leveling member 100 is connected to the lower end 4B of the leveling weight 4 (connecting step). As in the first embodiment, any method can be used to connect the base 110 to the leveling weight 4 as long as it is a detachable method.

[0057] As described with reference to Figures 5 and 10 to 12, according to the method of attaching the slope leveling member 100 to the leveling weight 4 according to the second embodiment, as in the first embodiment, the guide member 30 is used to attach the slope leveling member 100 in a state in which the leveling weight 4 is suspended in the vertical direction, so that the area of ​​the ground 40 required for attachment can be kept to the size of the footprint of the guide member 30. Therefore, according to the method of attaching the slope leveling member 100 to the leveling weight 4 according to the second embodiment, the space required for attaching the slope leveling member 100 can be reduced.

[0058] Figure 13 shows examples of other inclination angles of the slope leveling member 100. Figure 13(A) shows an example of a combination of height positions of each block where the ratio of height to base is 1:1.5 when the line segment connecting the stepped bottom end faces is considered as the hypotenuse of a right-angled triangle. Figure 13(B) shows an example of a combination of height positions of each block where the ratio of height to base is 1:1.2.

[0059] 13(A), blocks 111-115 are positioned so that through-hole 121 of block 111, through-hole 122B of block 112, through-hole 123B of block 113, through-hole 124B of block 114, and through-hole 125B of block 115 are at the same height. Then, a bar 116 is inserted into these through-holes, and when a line segment connecting stepped lower end faces 111B-115B is viewed as the hypotenuse of a right-angled triangle, the height position of each block 111-115 is maintained so that the ratio of height to base is 1:1.5.

[0060] 13(B), blocks 111-115 are positioned so that through hole 121 of block 111, through hole 122C of block 112, through hole 123C of block 113, through hole 124C of block 114, and through hole 125C of block 115 are at the same height. Then, a bar 116 is inserted into these through holes, and when a line segment connecting stepped lower end faces 111B-115B is viewed as the hypotenuse of a right-angled triangle, the height position of each block 111-115 is maintained so that the ratio of height to base is 1:1.2.

[0061] In the slope leveling member 100 according to the second embodiment, the relative positions of the lower end faces 111B-115B of the blocks 111-115 can be changed, so that the positions of the lower end faces 111B-115B in the sliding direction can be aligned to form a single plane as a whole of the lower end faces 111B-115B. To adjust the positions in this way, for example, through holes may be provided at the same positions in the vertical direction of each of the blocks 111-115, and a bar 116 may be inserted through these through holes.

[0062] In this way, by forming each of the lower end faces 111B-115B of the slope leveling member 100 into one plane, it becomes possible to use the slope leveling member 100 for leveling the top face 6A as well as the slope 6B of the foundation rubble mound 6. This makes it possible to perform leveling work on both the top face 6A and the slope 6B of the foundation rubble mound 6 using a single slope leveling member 100, so there is no need to attach and detach the slope leveling member 100 from the lower end 4B of the leveling weight 4, regardless of whether the surface to be leveled is the top face 6A or the slope 6B. Therefore, the slope leveling member 100 according to the second embodiment can improve the efficiency of the overall leveling work of the foundation rubble mound 6.

[0063] The present embodiment has been described above with reference to specific examples. However, the present disclosure is not limited to these specific examples. Any design modifications made by a person skilled in the art to these specific examples are also included within the scope of the present disclosure as long as they have the features of the present disclosure. The elements of each of the above-mentioned specific examples and their arrangements, conditions, shapes, etc. are not limited to those exemplified and can be changed as appropriate. The combination of each of the elements of each of the above-mentioned specific examples can be changed as appropriate as long as no technical contradiction occurs. [Explanation of symbols]

[0064] 1 Rubble mound leveling device 4. Leveling weights 6. Foundation Rubble Mound 6A Top surface 6B Slope 10, 100 Slope leveling materials 11B, 12B, 13B, 14B, 15B, 111B, 112B, 113B, 114B, 115B Bottom end surface 11, 12, 13, 14, 15, 111, 112, 113, 114, 115 blocks 110 Base 116 Bar material (holding part)

Claims

1. A slope leveling member to be attached to the lower end of a leveling weight for leveling the plane of an underwater foundation rubble mound, The lower end of the slope leveling member is provided with a plurality of lower end surfaces formed in a stepped shape according to the inclination angle of the slope of the foundation rubble mound, The normal direction of the plurality of lower end surfaces is the same as the falling direction of the leveling weight. Parts for leveling slopes.

2. The stepped lower end surfaces of the slope leveling member are formed by combining a plurality of blocks. A slope leveling member according to claim 1.

3. The stepped lower end surfaces of the slope leveling member are formed of a single member. A slope leveling member according to claim 1.

4. The stepped lower end surfaces of the slope leveling member are capable of changing their relative positions to each other. A slope leveling member according to claim 1.

5. A base portion connected to a lower end of the leveling weight; A plurality of blocks slidable relative to the base along an extension direction of the leveling weight; a holder for holding relative positions of the plurality of blocks; Equipped with The lower end surfaces of the plurality of blocks form the stepped lower end surfaces of the slope leveling member. A slope leveling member according to claim 4.

6. The holding portion is At least one through hole is provided in each of the plurality of blocks along the extension direction, and each through hole is formed along a direction in which the plurality of blocks are arranged; A rod that can be inserted into the through hole, the bar is inserted through any one of the through holes for each of the plurality of blocks, and the bar is inserted through all of the through holes of the plurality of blocks, thereby maintaining the relative positions of the plurality of blocks. A slope leveling member according to claim 5.

7. A leveling weight for leveling the surface of the underwater foundation rubble mound; A slope leveling member according to any one of claims 1 to 6, which is attached to a lower end of the leveling weight; A rubble mound leveling device equipped with a rubble mound leveling device.

8. A method of attaching a slope leveling member to the lower end of a leveling weight for leveling the surface of an underwater foundation rubble mound, comprising the steps of: A lower end of the slope leveling member is provided with a plurality of lower end surfaces formed in a stepped shape according to the inclination angle of the slope of the foundation rubble mound, The normal direction of the plurality of lower end surfaces is the same as the falling direction of the leveling weight, a placing step of placing a guide member having a step surface according to the inclination angle on the ground so that the step surface faces upward; a positioning step of positioning the slope leveling member by bringing the lower end surfaces of the slope leveling member into contact with the step surfaces of the guide member placed in the placing step; a connecting step of lowering the leveling weight from above onto the slope leveling member after being positioned in the positioning step, and connecting the slope leveling member to a lower end of the leveling weight; A method for installing slope leveling components, including:

9. The slope leveling member includes a base connected to a lower end of the leveling weight, a plurality of blocks slidable relative to the base along an extension direction of the leveling weight, and a retaining portion that retains the relative positions of the plurality of blocks, and the lower end surfaces of the plurality of blocks form the plurality of stepped lower end surfaces of the slope leveling member, The positioning step lowers the slope leveling member from above relative to the guide member placed in the placing step, and brings the lower end faces of the blocks into contact with the stepped surfaces of the guide member, respectively, thereby collectively positioning the stepped lower end faces of the slope leveling member; a holding step of holding the relative positions of the plurality of blocks positioned in the positioning step by the holding unit, In the connecting step, the leveling weight is lowered from above onto the slope leveling member after being held in the holding step, and the slope leveling member is connected to a lower end of the leveling weight. A method for mounting the slope leveling member according to claim 8.

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