| 摘要 |
1. A construction method for preventing land erosion and improving a stream, comprising: (a) a step of directly or indirectly fixing at least one longitudinal cable (1) to a base point (2); and (b) a step of mooring at least two barrier-like members (3) directly by using said longitudinal cable (1) or by using a mooring cable (4) connected to said longitudinal cable (1), so that the at least two barrier-like members (3) are provided in a stream or a river substantially perpendicular to the direction of the current of water at an appropriate interval in the direction from the upper end to the lower end of the stream or river. 2. The construction method for preventing land erosion and improving a stream according to Claim 1, wherein the base point (2) is provided on land along the stream or river land along the stream or river. 3. The construction method for preventing land-erosion and improving a stream according to Claim 1, wherein the base point (2) is provided in the stream or river. 4. The construction method for preventing land erosion and improving a stream according to Claim 1, wherein the base point (2) is a tree, a rock, or an artificial structure. 5. The construction method for preventing land erosion and improving a stream according to Claim 1, wherein said longitudinal cable (1) is directly fixed to said base point (2). 6. The construction method for preventing land erosion and improving a stream according to Claim 1, wherein said longitudinal cable (1) is indirectly fixed to said base point (2) via an auxiliary cable (5). 7. The construction method for preventing land erosion and improving a stream according to Claim 1, wherein said barrier-like members (3) are selected from the group consisting of a single piece of timber, bound timber, timber connected in a venetian-blind shape, a concrete block, a wire cylinder filled with stones, and a sandbag. 8. The construction method for preventing land erosion and improving a stream according to Claim 1, wherein said barrier-like members (3) are directly moored by using said longitudinal cable (1). 9. The construction method for preventing land erosion and improving a stream according to Claim 1, wherein said barrier-like members (3) are moored by using said mooring cable (4). 10. The construction method for preventing land erosion and improving a stream according to Claim 1, wherein at least three barrier-like members (3) are provided, including at least two barrier-like members (3) that are placed side-by-side and which may be connected to each other with a connecting cable (6). 11. A construction method for preventing land erosion and improving a stream, comprising: (a) a step of directly or indirectly axing at least two longitudinal cables (1) to a base point (2); (b) a step of connecting said longitudinal cables (1) to each other by the use of at least one lateral cable (7); and (c) a step of mooring at least two barrier-like members (3) directly by using said longitudinal cables (1) and/or said lateral cable (7) or by using a mooring cable (4) connected to each longitudinal cable (1) and/or said lateral cable (7), so that the at least two barrier-like members (3) are provided in a stream or a river substantially perpendicular to the direction of the current of water at an appropriate interval in the direction from the upper end to the lower end of the stream or river. 12. The construction method for preventing land erosion and improving a stream according to Claim 11, wherein said barrier-like members (3) are directly moored by using said longitudinal cables (1) and/or said lateral cable (7). 13. A construction method for a revetment, comprising: (a) a step of directly or indirectly fixing at least one longitudinal cable (1) to a base point (2); and (b) a step of mooring at least one barrier-like member (3) directly by using said longitudinal cable (1) or by using a mooring cable (4) cable (1) or by using a mooring cable (4) connected to said longitudinal cable (1), so that said barrier-like member (3) is provided in a stream or a river and along its bank. 14. The construction method for a revetment according to Claim 13, wherein the base point (2) is provided on land along the stream or river. 15. The construction method for a revetment according to Claim 13 wherein the base point (2) is provided in the stream or river. 16. The construction method for a revetment according to Claim 13, wherein the base point (2) is a tree, a rock, or an artificial structure. 17. The construction method for a revetment according to Claim 13, wherein said longitudinal cable (1) is directly fixed to said base point (2). 18. The construction method for a revetment according to Claim 21, wherein said longitudinal cable (1) is indirectly fixed to said base point (2) via an auxiliary cable (5). 19. The construction method for a revetment according to Claim 13, wherein said barrier-like member (3) is selected from the group consisting of a single piece of timber, bound timber, timber connected in a venetian-blind shape, a concrete block, a wire cylinder filled with stones, and a sandbag. 20. The construction method for a revetment according to Claim 13, wherein said barrier-like member (3) is directly moored by using said longitudinal cable (1). 21. The construction method for a revetment according to Claim 13, wherein said barrier-like member (3) is moored by using said mooring cable (4). 22. The construction method for a revetment according to Claim 13, wherein there are provided at least two barrier-like members (3) connected in series to each other with a connecting cable (6). 23. A construction method for preventing mountain landslides, comprising: (x) a step of directly or indirectly fixing at least one longitudinal cable (1) to a base point (2) so as to provide the longitudinal cable (1) on both sides of a mountain across a ridge of the mountain; and (y) a step of mooring at least two barrier-like members (3) directly by using said longitudinal cable (1) or by using a mooring cable (4) connected to said longitudinal cable (1), so that the at least two barrier-like members (3) are provided on each side of the mountain at an appropriate interval in the direction of the height of a mountain with the longer dimension of each barrier-like member (3) extending substantially at right angles to the direction of the height of the mountain. 24. The construction method for preventing mountain landslides according to Claim 23, wherein said base point (2) is a tree, a rock, or an artificial structure. 25. The construction method for preventing mountain landslides according to Claim 23, wherein said longitudinal cable (1) is directly fixed to said base point (2). 26. The construction method for preventing mountain landslides according to Claim 23, wherein said longitudinal cable (1) is indirectly fixed to said base point (2) via an auxiliary cable (5). 27. The construction method for preventing mountain landslides according to Claim 23, wherein said barrier-like members (3) are selected from the group consisting of a single piece of timber, bound timber, timber connected in a venetian-blind shape, a concrete block, a wire-cylinder filled with stones, and a sandbag. 28. The construction method for preventing mountain landslides according to Claim 23, wherein said barrier-like members (3) are moored so that they are provided stepwise on a mountainside. 29. The construction method for preventing mountain landslides according to Claim 23, wherein said barrier-like members (3) are directly moored by using said longitudinal cable (1). 30. The construction method for preventing mountain landslides according to Claim 23, wherein said barrier-like members (3) are moored by using said mooring cable (4). 31. The construction method for preventing mountain landslides according to Claim 23, wherein on at least one side of the mountain at least three barrier-like members (3) are provided, including at least two barrier-like members (3) which are placed side-by-side and which may be connected to each other with a connecting cable (6). 32. The construction method for preventing mountain landslides according to Claim 23, wherein at least one barrier-like member (3) is provided at each end of said longitudinal cable. 33. A construction method for preventing mountain landslides, comprising: (x) a step of directly or indirectly fixing at least two longitudinal cables (1) to a base point (2); (y) a step of connecting said longitudinal cables (1) to each other with at least one lateral cable (7); and (z) a step of mooring at least two barrier-like members (3) directly by using said longitudinal cables (1) and/or said lateral cable (7) or by using a mooring cable (4) connected to each longitudinal cable (1) and/or said lateral cable (7), so that the at least two barrier-like members (3) are provided at an appropriate interval in the direction of the height of a mountain with the longer dimension of each barrier-like member (3) substantially at right angles to the direction of the height of the mountain; wherein said base point (2) is provided on a slope opposite the side of the mountain on which said barrier-like members (3) are provided, and said longitudinal cables (1) are fixed to said base point (2) across a ridge of the mountain. 34. A construction method for preventing land erosion and improving a stream, comprising: (a) a step of directly or indirectly fixing a lateral cable (7) to at least two base points (2); and (b) a step of mooring directly by using said lateral cable (7) or by using a mooring cable (4) connected to said lateral cable (7) at least one barrier like member (3) in a stream or a river so as to be provided substantially perpendicular to the direction of the current of water; wherein at least two sets of structures, each comprising said lateral cable (7), the base points (2), and the barrier-like member (3) as essential components, are placed, so that said barrier-like members (3 |
