JPH1171739A - Foundation consolidation method for flood control - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the natural environment, by forming the foundation consolidation member of a revetment with submerged wooden mattresses and arranging cobble stones and fish nest blocks and planting pussy willow. SOLUTION: When water depth is shallow, wooden mattresses are submerged and laid at the lower part below the water level of the slope face of a revetment constructed with the cobble-stick method or the like and cobble stones are laid in the half part of the submerged side of the wooden mattress and pussy willow trees are planted in an area surrounded by wooden frames. When water depth is deep, the bottom of the slope face of the revetment constructed with the rubble-fascine method or the like is extended and pitching stones are laid and thereafter, submerged wooden mattresses are laid below the water level at the bottom of the pitching stones and cobble stones are laid in the inside. And fish nest blocks are scattered among the cobble stones and pussy willow trees are planted. In this way, the habitat environment of fish and aquatic small animals can be improved and a feeding ground can be supplied for wild birds. As pussy willow tree is an aquatic plant, oxigen is supplied in water from the tree to improve the habitat condition of aquatic animals. And further, proliferation of aquatic vegetation is accelerated to purify water.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of consolidating a river for improvement of a river, taking into consideration environmental influences, especially landscapes and aquatic plants and animals.

[0002]

2. Description of the Related Art In recent years, revetment and rehabilitation work on rivers and other revetments has been rapidly advanced, and the use of concrete blocks has increased. However, early completion of disaster recovery work, etc., and adoption of permanent construction methods to prevent disasters again Although it was effective in improving the function of flood control, it is not necessarily a suitable method when nature protection and environmental preservation are considered, especially considering the influence of aquatic plants and animals.

[0003]

As described above, river rehabilitation works that have been carried out in recent years are constructed with a single concrete block from the revetment slope to the riverbed. However, the revetment slope is concrete-colored, and it is far from the environment where aquatic plants and animals thrive, and the decline of water is rapidly accelerated, and there is no green and the surrounding landscape is impaired.

[0004]

SUMMARY OF THE INVENTION In view of the current state of river construction in recent years, the inventor of the present invention has made intensive studies to improve the situation, and has arrived at the present invention. The embankment / consolidation concrete block, etc. to be installed is used as a woodwork sink, and a part of the cobblestone laid in the sink is replaced with a fish nest block. The plant succeeded in creating an environment close to nature by planting.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to the accompanying drawings, an embodiment of the present invention will be described. FIG. 1 is a diagram showing an example of construction for a river having a relatively shallow depth, and FIG. FIG. FIG. 3 is a plan view of the woodwork sink, and FIG. 4 is a cross-sectional view of the woodwork sink, which is vertically written in drawing. FIG. 5 shows a fish nest block.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to FIG. 1, this embodiment is a construction drawing of a place having a relatively shallow water depth, in which a revetment slope is constructed by a rubble stone work and a woodwork is provided at the bottom of the slope below the water surface. Laying sinks. This woodwork sink is composed of a wooden frame as shown in FIGS. 3 and 4, and a cobblestone is laid on the half depth side of the woodwork sink, and a part of the woodwork sink is made by the willow branch method. Shall be vegetated.

Referring to FIG. 2, this embodiment is a construction drawing in a place having a relatively deep water, in which a revetment slope is constructed by a kuriishi shiroboshi or the like, and the bottom of the slope is extended to extend the slope. Construction will be done with stone, and a woodwork sink will be laid below this water surface. In the same manner as in the above embodiment, fish nest blocks are scattered and arranged in the frame on which the cobblestone is laid.

[0008] The fish nest block used in the present invention is a block of a special shape as shown in Fig. 5, and has six square surfaces (2) having a through hole (1) through which fish can enter, This is a hollow cube composed of six equilateral triangular faces (3) adjacent to each side of this face, and has good stability because it is buried between the boulders.

[0009]

As described above, the method of the present invention is constructed as described above. For living organisms, fish nests are buried, so that the habitability of fish is good. Yes, so it is also suitable as a feeding ground for wild birds.

[0010] Regarding the landscape, the wooden frame that constitutes the woodwork sink uses thinning materials, and also has a high binding force because it vegetates the willow willow. Its trunk is strong, and because it is an underwater plant, the oxygen into the water is low. To improve the habitat conditions of aquatic animals (including fish). In addition, the present invention has a remarkable action and effect as compared with the conventional method of purifying water quality by increasing the growth of aquatic plants.

[Brief description of the drawings]

FIG. 1 is an embodiment diagram showing a construction method in a place where the water depth is shallow.

FIG. 2 is a diagram showing an embodiment in a place with a depth of water.

FIG. 3 is a plan view of a woodwork sink.

FIG. 4 is a cross-sectional view of a wooden frame of a woodwork sink.

FIG. 5 is a perspective view of a fish nest block.

Claims (3)

[Claims] (1) A method of consolidating roots for flood control, comprising: constructing a revetment slope with a rubble stone rubber or the like, using a woodwork sink below the water bottom of the slope, and cultivating shrub willow willow by a willow branch. 2. A flood control method in which a revetment slope is constructed by a rubble stone construction method and the like, a slope is extended by a stone masonry work, a woody sink is used below the water surface, and shrub-grown willow vegetation is vegetated by a willow branch construction. Root consolidation method. 3. The method according to claim 1, wherein a fish nest block is provided between the cobblestones to be laid on the woodwork sink.