WO2012017534A1 - Revetment block, manufacturing method of same, and revetment - Google Patents

Abstract

[Problem] To provide revetment blocks which can greatly reduce the amount of usage of concrete, and which allows effective use of rocks (fieldstones) collected from an avalanche of rocks and earth or a construction site as material for the revetment block, and which is easier to construct than a revetment block being a concrete molding and is sufficiently durable, and which makes a natural appearance of a slope formed of the revetment block. [Solution] A revetment block (1A) is characterized by comprising: rocks (2); metal wires (3, 3a, 3b) integrally connected to the rocks (2); and concrete (4) which forms the outer shape while filling therewith a clearance in a rock connection body (9) generated by connecting the rocks (2) with the metal wires (3, 3a,3b).

Description

Revetment block, its manufacturing method and revetment

The present invention reduces the amount of concrete used at the time of manufacturing the revetment block, and also uses the rock collected from the construction area of the revetment block and the debris flow as a material for the revetment block, and a method for manufacturing the same. Regarding revetment.

Conventionally, as a means of protecting river (river) shores and coasts from erosion by water, there is a method of revetment by artificially forming slopes by laying concrete revetment blocks on the river (river) shores and coasts. Are known.
Generally, when manufacturing a revetment block used to form such a revetment, its shape is uniform in order to increase its productivity. As a result, the river (river) shore and the coast have an artificial and inorganic appearance, and there is a problem that the natural scenery around the river is damaged.
In order to cope with such conventional problems, the law of the revetment block is used in order to make the appearance of the slope formed by the manufactured revetment block as natural as possible without impairing its productivity. Several prior arts have been disclosed in which natural stones are embedded in the surface forming surface, or natural stones themselves are used as revetment blocks.

Patent Document 1 discloses an invention relating to a decorative concrete block using natural stone and wood as a decorative material for the concrete block under the name “wood-based concrete block”.
The concrete block which is the invention disclosed in Patent Document 1 is a concrete block in which timber and natural stone are embedded on the surface of the concrete block, and ridges are formed on the wood, and these ridges are embedded in the concrete. It is characterized by that.
According to the invention disclosed in Patent Document 1 having the above-described configuration, since the protrusions are formed on the back surface of the wood, the wood is firmly fixed to the concrete block, and is not easily peeled off by a water stream such as a river. Can be used for a period. Further, when the wood is corroded, the corroded wood and earth and sand remain in the concave portion of the ridge portion, and the plant can be propagated. The concrete surface is covered with residual corrosives and residual natural stones, which is also good for the landscape. Furthermore, since the generation of microorganisms can be promoted and insect and fish food can be supplied, the natural environment can be protected, and a natural landscape can be formed by the growth of plants.

Patent Document 2 discloses a molding method for producing concrete products of various shapes for constructing a seawall, retaining wall, etc. for civil engineering by an immediate demolding method under the name of “a molding method of a concrete product and a product molded by this method”. In addition, an invention relating to a concrete product having a natural stone or artificial stone block formed by this forming method as an exposed surface is disclosed.
The concrete product forming method disclosed in Patent Document 2 will be described using the reference numerals in the document as they are. The surface pallet is placed on the bottom of the formwork with the surface pallet facing downward with the exposed surface of the concrete product to be formed by the immediate demolding method. Placed on the plate, raised the surface pallet to the position a in the figure (in FIG. 1 of Patent Document 2) and temporarily stopped, opened the convex side molds provided on both sides and opened the opening above the mold More hard-mixed concrete is fed while vibrating the formwork, the surface pallet is pushed up to position b from below, the upper and lower sandwiched compression with the pressing of the press plate from above, and the convex side mold from both sides Compaction molding is performed by clamping compression from four directions with clamping compression from the side to be closed and mold frame vibration and independent vibration from the bottom surface of the surface pallet, open the convex side mold, and instantaneous vibration in the mold frame To remove the mold together with the surface pallet. The one in which the features.
Since the exposed surface of the concrete product manufactured by the invention disclosed in Patent Document 2 is in harmony with the natural environment, the river (river) shore and the coastal landscape can be made natural.

Patent Document 3 discloses an invention related to a masonry retaining wall formed for the purpose of use of a seawall, a dam, a rock fill dam, and the like on a coast, a river, an inclined land, and the like under the name “masonry retaining wall”.
The stone retaining wall disclosed in Patent Document 3 is a stone retaining wall formed by arranging a large number of stones in the length direction and by stacking a large number of stones in the height direction and filling the back surface with a backfill material. The front end of a metal wire is fixed to an anchor fixed to the back of the stone, the metal wire is extended to the back side of the stone, the rear end is fixed to a bar-like pile, and the metal wire and the pile are backfilled. A masonry retaining wall to be embedded in a material, inserting a tip of the metal wire into an insertion hole formed in the anchor and turning it back, and caulking a fixed sleeve passing through the turned-up portion and the middle portion of the metal wire. Or by welding, the front end portion of the metal wire is fixed to the anchor, the rear end portion of the metal wire is inserted through a lateral through hole formed in the pile, and the intermediate portion is folded between the folded portion and the metal wire. A fixed sleeve that passes through By Mel, or rear end portion of the metal wire by welding it is characterized in that fixed to the pile.
According to the invention disclosed in Patent Document 3 having the above-described configuration, the work of fixing the metal wire to the stone or pile is inserted and bent through the through hole of the anchor or pile, and the fixing sleeve is crimped. Or it can carry out easily by welding and the length of a metal wire can also be freely set at that time. Moreover, since the pull-out resistance member is a rod-like pile, it can be easily arranged in the backfill material. That is, it is possible to easily form a retaining wall using natural stone.

Patent document 4 has the name “natural stone retaining wall block and natural stone mounting method in the natural stone retaining wall block”, retaining wall construction of river revetment work, roads or constructed land (in this specification, retaining wall construction and In general, it is used in natural stone emptying methods and natural stone mats that hold a large number of natural stones in a state of being assembled by a holding wire mesh, and is particularly suitable for retaining walls with steep inclination angles. An invention relating to a natural stone retaining wall block body and a method for attaching a natural stone in the natural stone retaining wall block body is disclosed.
When the invention disclosed in Patent Document 4 is described using the reference numerals described in the document as they are, a mounting bracket member 13 fixed by an anchor member 12 driven into the natural stone 5 and a natural stone holding body on one end side. A hook 14a is formed to be hooked to the six reinforcing bars 7a, and the other end side is provided with an attachment 14b that is inserted into the insertion hole 13d of the attachment bracket member 13, and the hook 14a is used as the first reinforcing bar 7a. The natural stone 5 is firmly attached to the natural stone holding body 6 through the mounting bracket 14 by bending the fitting insertion portion 14b at the outer peripheral portion of the second reinforcing bar 7b. .
According to the invention disclosed in Patent Document 4 having the above-described configuration, the fitting fitting combined with the mounting bracket member fixed to the natural stone from either the front side or the back side of the natural stone holding body combined with the natural stone is inserted. Each natural stone can be firmly attached to the natural stone holding body via the mounting bracket by a simple operation of bending the portion so as to be hung on the second rebar. According to the invention disclosed in Patent Document 4, a natural stone retaining wall block in which a large number of natural stones are attached to a natural stone holder framed with a reinforcing bar is used not only in a factory but also in the field. As a result, many natural stones are firmly attached to natural stone holders with high mechanical strength, so that they can be installed safely and firmly on steep retaining walls. Is possible. Moreover, according to the invention disclosed in Patent Document 4, a concrete placing process that requires a curing period and a curing period for each block is not required, and the construction period can be greatly shortened and the construction cost can be reduced. become.

JP 2003-55936 A Japanese Patent Laid-Open No. 7-171814 JP 2008-190181 A JP 2006-29025 A

In the case of the invention disclosed in Patent Document 1 and Patent Document 2, rock (natural stone) is used in a part of the revetment block, so when the revetment block is laid and the revetment is formed, the landscape is natural. However, since most of the revetment block is made of concrete, there is a problem that the cost of materials increases when the revetment block is manufactured.
In addition, it is necessary to dispose of waste stones when debris flows occur due to heavy rains, etc., and waste stones that come out when rivers or rivers are destroyed due to revetment work. In addition to the construction cost of the revetment itself, there was a problem that additional costs were required to dispose of the waste stone and soil.
Furthermore, in the case of the invention disclosed in Patent Document 1 and Patent Document 2, since the rock (natural stone) is only partially embedded in the surface of the revetment block, the rock (natural stone) on the concrete portion of the revetment block If the embedding amount is small, there is a possibility that the rock (natural stone) may be peeled off due to the action of water flow or the like when the revetment block is used, which is not preferable.

In the case of the inventions disclosed in Patent Document 3 and Patent Document 4, since the revetment is formed with natural stone itself, the amount of concrete used can be significantly reduced compared to the case of using a revetment block made of concrete, as well as debris flow and construction. It is thought that the waste stone collected from the site can be used effectively.
However, when the size of the waste stone is various, there is a problem that the construction becomes difficult because a technique of a high level stonework is required to form a slope using such a rock.
On the other hand, if the size of the rock used (natural stone) is constant, the slope can be easily formed, but the rock used (natural stone) should be within a certain range. It was necessary to adjust in advance, and there was a problem that the cost was increased for adjusting the size of the rock.
Furthermore, if the rock (natural stone) part is a simulated stone made of concrete, the effect of reducing the amount of concrete used will not be exhibited at all, and it is possible to effectively use debris flow and waste stone collected from construction sites. There was a problem that it was not possible.
In addition, in the case of the inventions disclosed in Patent Document 3 and Patent Document 4, since the anchor member is exposed to the outside, when the anchor member corrodes and deteriorates with the passage of time, water increase in the river or There was a risk that the revetment could collapse easily when a big wave occurred, and there were also issues regarding durability and safety.

The present invention has been made in response to such a conventional situation, and can significantly reduce the amount of concrete used when manufacturing a revetment block. Also, waste stone collected from a debris flow or construction site can be used. It can be used effectively as a material for the revetment block, and it is easier to install than the concrete revetment block and has sufficient durability, and the natural appearance of the slope formed by the revetment block is natural. It is in providing the revetment block which can be made, its manufacturing method, and a revetment.

In order to achieve the above object, the revetment block according to the first aspect of the present invention fills a gap between a rock, a metal wire integrally connected to the rock, and a rock connected body in which a plurality of rocks are connected by a metal wire. However, it has the concrete which forms an external shape.
In the invention of the above configuration, the rock serves as an aggregate of the revetment block, and has the effect of reducing the consumption of concrete used in manufacturing the revetment block according to claim 1. Further, the metal wire has an action of fastening a plurality of rocks together to form a rock connected body. Furthermore, the concrete fills the gaps of the rock connection body to form a solid revetment block, and also has an action of forming the irregular shape of the rock connection body into a specific shape.

The revetment block according to claim 2 is the revetment block according to claim 1, wherein one end of the metal wire is inserted into a hole formed on the surface of the rock and fixed to the rock. It is characterized by this.
The invention of the above configuration specifically describes the method of fixing the metal wire to the rock in the invention of claim 1. For this reason, in addition to the same operation as that of the invention described in claim 1, the invention described in claim 2 has a hole formed in the surface of the rock that allows one end of the metal wire to be inserted into the rock. It has the action.

The revetment block according to claim 3 is the revetment block according to claim 1 or claim 2, wherein the rock connection body is formed by a second metal wire that tightens the metal wire in addition to the metal wire. It is characterized by connecting rocks.
In addition to the same operation as that of the first or second aspect of the invention, the second metal wire has the effect of further strengthening the connection between the rocks in the rock connected body. Thereby, it has the effect | action of preventing shape loss at the time of moving a rock coupling body. Further, the second metal wire has the same action as the steel frame in the revetment block according to claim 3. That is, it has the effect | action of raising the intensity | strength of the revetment block of Claim 3.

A revetment block according to a fourth aspect of the present invention is the revetment block according to any one of the first to third aspects, wherein a part of at least one rock is bare from a concrete surface forming an outer shape. It is characterized by having made it come out.
In addition to the same action as that of each of the first to third aspects of the invention, the invention having the above-described structure is characterized in that a part of at least one rock is exposed from the concrete surface forming the outer shape. 4 has the effect of making the appearance of the revetment block not only concrete but also concrete and rock.
And when a part of the rock is exposed on the slope forming surface of the revetment block according to claim 4 and the revetment is formed using the revetment block, the rock (natural stone) is on the slope. It has the effect of making it look like it is spread out.

The revetment block according to claim 5 is the revetment block according to any one of claims 1 to 4, wherein a ratio of the total volume of the rock to the total volume of the revetment block is 50% or more. It is characterized by being.
In addition to the same action as the invention described in each of claims 1 to 4, the invention with the above-described configuration can increase the ratio of the total volume of the rock to the total volume of the revetment block by 50% or more. It has the effect of reducing the amount of concrete used to manufacture a revetment block having a function equivalent to or better than that of a revetment block manufactured using only concrete to less than half that of a conventional revetment block.

The revetment which is the invention according to claim 6 is formed by the revetment block according to any one of claims 1 to 5.
In the invention with the above configuration, the operation is the same as that of the invention described in each of claims 1 to 5.
The revetment according to claim 6 can use abundant rocks as the material (aggregate) of the river (river) shore and the revetment block that reinforces the shore, so the materials necessary to form a strong revetment ( For example, it has the effect of reducing the cost of concrete) and reducing the construction cost.

The revetment which is the invention according to claim 7 is the revetment according to claim 6, wherein the shape of the concrete surface forming the outer shape of the revetment block is two or more kinds of polygons. .
In addition to the same function as the invention of claim 6, the invention of the above configuration is a slope having a curved surface or a curve by making the shape of the concrete surface forming the outer shape of the revetment block into two or more types of polygons. It has the effect of facilitating formation. Therefore, it has the effect | action of improving the versatility of the revetment of Claim 7.

A revetment which is an invention according to claim 8 is a revetment block according to any one of claims 1 to 5, a main shaft in a columnar or polygonal column shape, and a main shaft on a side surface of one end of the main shaft. And at least three cylindrical or polygonal column-shaped branches that are vertically symmetrical about the axis, and the positions of the branches in the vicinity of the other end of the main shaft and the circumferential direction of the main shaft. A slope is formed by combining a second revetment block having at least one projecting portion protruding at a matching position.
In the invention of the above configuration, the revetment block according to any one of claims 1 to 5 has the same action as the revetment block according to each of claims 1 to 5.
Moreover, the 2nd bank protection block has the effect | action of protecting a slope firmly. And when constructing this 2nd revetment block on a slope, by using the revetment block of any one of Claims 1 thru | or 5 instead of using an irregular rock, a slope is established. Is easy to form.
That is, when a slope is formed using the second revetment block and an irregular rock, a high stone-setting technique is required to fix the rock to the slope in a stable state. On the other hand, since all the revetment blocks according to claims 1 to 5 are made of concrete, the outer shape thereof is constant and regular, so that the slope can be easily formed.

The revetment block manufacturing method according to claim 9 is a first step of fixing a metal wire to the surface of the rock, and after the first step, the rock provided with the metal wire is accommodated in the frame body. , A second step of tightening the metal wire or using the second metal wire to tighten the metal wire to form a rock connected body, and after this second step, the rock connected body is taken out from the frame And a third step of forming a revetment block by filling the gap between the rock connecting body and the concrete molding form with concrete.
In the invention having the above-described configuration, the first step has an action of fixing at least one metal wire on the surface of the rock. In addition, the second step has an effect of forming a rock coupled body that is firmly and integrally connected by tightening a plurality of rocks with a metal wire or, if necessary, the second metal wire. Also, at this time, by using a frame and making it a rock joint having a size that can be accommodated inside the frame, in a subsequent third step, using a fixed shape revetment block forming form, It has the effect of making it possible to form an outer shape.
Furthermore, in the third step, concrete is filled in the gap between the rock connected bodies formed in the previous second step to form a solid revetment block, and the irregular rock connected bodies are It has the effect of making a revetment block with an outer shape.
That is, according to the revetment block manufacturing method of claim 9, it has the effect of making it possible to manufacture what has the same or better quality as a reinforced concrete revetment block by using less concrete.

The revetment block manufacturing method according to claim 10 is the revetment block manufacturing method according to claim 9, wherein at least part or all of the rock is from a debris flow generation area or a revetment block construction area or both. It is characterized by being collected.
In addition to the same function as that of the ninth aspect of the present invention, the rock used for the revetment block is at least partly or entirely collected from the debris flow generation area or the revetment block construction area or both. By doing, it has the effect | action of making it possible to procure materials required for manufacture of a revetment block cheaply and easily.
Moreover, it has the effect | action of reducing the cost concerning disposal of waste stones, such as a rock produced from the generation area of a debris flow, or the construction area of a revetment block.

In the invention according to claim 1 of the present invention, the concrete of the revetment block formed by molding concrete is replaced with rocks, and the amount of concrete used in manufacturing the revetment block according to claim 1 is reduced. be able to. Therefore, the cost (material cost) required for manufacturing the revetment block according to claim 1 can be reduced.
In addition, the revetment block according to claim 1 is a concrete molded body having a specific shape, although the rock connection body in which irregular shaped rocks are connected is used. In order to form a revetment, advanced stoneworking techniques are not required. As a result, revetment construction work using the revetment block according to claim 1 can be facilitated.
Moreover, by using a rock, a sufficient load can be applied to the revetment block according to claim 1, and the revetment block according to claim 1 formed by connecting the rock with a metal wire. It can have the same strength as reinforced concrete. As a result, it is possible to provide a revetment block having sufficient weight and strength, and it is possible to strongly protect slopes formed on river (river) shores and coasts.
Furthermore, even when a part of the rock is exposed from the surface of the revetment block according to claim 1, the rock is firmly tightened by a metal wire to another rock embedded in the concrete. There is no risk of the rocks falling out. For this reason, while maintaining the safety of the revetment block, it is possible to expose the rock from the molding surface of the revetment block according to claim 1 to enhance its design.
In addition, since the metal wire that fastens the rocks is almost surely accommodated in the concrete, there is almost no possibility that the metal wire is directly exposed to water or the like, so that the corrosion can be suppressed. As a result, the durability of the revetment block according to claim 1 can be improved.
Therefore, according to invention of Claim 1, it has the original and useful effect that it can provide the revetment block which has sufficient weight, intensity | strength, durability, and is easy to construct at low cost.

The invention described in claim 2 specifically and in detail shows the method of fixing the metal wire to the rock in the invention described in claim 1. Therefore, it has substantially the same effect as that of the first aspect of the invention.
In addition, in the invention according to claim 2, the metal wire is fixed to the rock by forming a hole in the rock and inserting the metal wire into the hole, for example, by fixing with an adhesive. The metal wire can be securely fixed to the rock without using any special technique.
Further, in the case of the invention according to claim 2, the step of forming a hole in the rock, the step of inserting the metal wire into the hole, and fixing the metal wire with, for example, an adhesive, and the metal wire are fixed. The revetment according to claim 2, wherein the step of connecting rocks to form a rock connection body and the step of forming a concrete formed body using the rock connection body can be performed separately by different workers. The process related to the manufacture of the block can be divided, and as a result, the production can be performed by the flow work. Therefore, the productivity of the revetment block according to claim 2 can be improved.
Therefore, according to invention of Claim 2, not only the cost concerning the material concerning manufacture of a seawall block can be reduced, but it can also reduce manufacturing cost. Therefore, it has the effect that a high-quality revetment block can be provided at low cost.

In addition to the same effect as that of the invention of claim 1 or 2, the invention described in claim 3 uses the second metal wire to produce a rock connected body in which rocks are more firmly connected. It has the effect of being able to.
As a result, it is possible to prevent the rock connected body from being out of shape when the rock connected body is moved in order to accommodate the rock connected body in a concrete molding die and mold the outer shape thereof. As a result, there is an effect that workability can be improved.
Moreover, since the total amount of the metal wire arrange | positioned in the bank protection block of Claim 3 increases, the intensity | strength of the bank protection block of Claim 3 also increases.

In addition to the same effect as the invention described in each of claims 1 to 3, the invention described in claim 4, more specifically, from the surface of the bank protection block described in claim 4, more specifically, the revetment described in claim 4. By exposing a part of at least one rock from the slope forming surface of the block, when the revetment is formed using the revetment block, the appearance of the slope is spread with many rocks (natural stones). Can be like that.
As a result, the slope of the revetment constructed using the revetment block according to claim 4 can be brought close to a natural landscape, and a high aesthetic revetment can be provided.
In addition, by making a part of at least one rock bare from the concrete molding surface of the revetment block according to claim 4, the shape of the slope of the revetment block according to claim 4 can be made to have a undulating shape. it can.
As a result, since the effect of reducing the flow velocity of the water flow in the river and the effect of wave erasing on the coast can be expected, the river (river) shore and coast can be more suitably protected.

In addition to the same effects as the inventions described in each of claims 1 to 4, the invention described in claim 5 uses the concrete in proportion to the rock as compared to the case where all of the revetment block is formed only with concrete. The amount can be reduced.
That is, according to the fifth aspect of the present invention, a revetment block having equal or better performance and function can be produced with a concrete use amount of about half or less than that when producing a revetment block only with concrete. Therefore, it has the effect that a high-quality revetment block can be provided at low cost.

The invention according to claim 6 is a revetment formed by the revetment block according to each of claims 1 to 5, and each revetment block is an invention according to each of claims 1 to 5. Has the same effect.
Moreover, according to invention of Claim 6, while reducing the usage-amount of concrete, providing the revetment which has the performance and function equivalent to or more than the revetment formed using the revetment block which manufactured all with concrete. It has the effect of being able to.
Moreover, the revetment block according to each of claims 1 to 5, which is used to form the revetment according to claim 6, uses a lot of rocks which are natural stones, but its outer shape is constant. Therefore, the construction is extremely easy. Therefore, even in areas where the revetment construction technology is not sufficiently developed, a strong and highly functional revetment can be easily constructed.
In addition, the revetment block which comprises the revetment of Claim 6 does not need to be only one of the revetment blocks of each of Claim 1 thru | or Claim 5. That is, the revetment according to claim 6 may be formed by only the revetment block according to claim 1, or may be formed by using all the revetment blocks according to claims 1 to 5. Good. That is, the concept of the revetment block used for the revetment according to claim 6 is a concept of using at least one type of the revetment block according to claims 1 to 5.

In addition to the same effect as that of the invention described in claim 6, the invention described in claim 7 has at least two types of polygonal shape of the slope forming surface of the revetment block, thereby allowing the degree of freedom of the shape of the slope. It has the effect that can be improved.
More specifically, as a revetment block used in the invention according to claim 7, for example, when a combination of a hexagonal shape and a pentagonal shape is used as the shape of the slope forming surface, the slope having a curved surface is used. Can be easily formed by the revetment block of the present invention.
As a result, since the revetment described in claim 7 can be constructed on rivers and shores having various shapes, the versatility of the revetment described in claim 7 can be enhanced.

In the invention according to claim 8, when the revetment is formed, by using the second revetment block in addition to the revetment block according to claims 1 to 5, the effect of maintaining the slope of the second revetment block can be obtained. An even stronger revetment can be formed.
Conventionally, when a revetment is formed using the second revetment block, the retaining wall is formed mainly by stacking irregularly shaped rocks (natural stones) using advanced stonework technology. By using the bank protection block according to each of claims 1 to 5 in place of the slope, formation of a slope can be remarkably facilitated.
That is, the revetment block according to each of claims 1 to 5 is a concrete molded body having a specific shape, although a large number of rocks (natural stones) are connected. When forming a retaining wall using the revetment block according to each of claims 1 to 5, an advanced stoneworking technique is not required. For this reason, construction of the retaining wall (bank protection) using the 2nd bank protection block can be made easy, and the cost concerning construction can be reduced.
That is, according to the invention described in claim 8, a strong and safe retaining wall (bank protection) can be provided at low cost.

The invention described in claim 9 captures the invention described in claim 1 as a method invention, and the revetment block manufactured according to the invention described in claim 9 has the same effect as the revetment block described in claim 1. Have.
Moreover, according to the method of Claim 9, since the process which manufactures a revetment block can be divided and performed by another operator, a series of manufacturing processes can be performed by a flow operation. As a result, mass production of the revetment block according to the present invention can be made possible. Therefore, the revetment construction work in an area hit by a natural disaster such as debris flow can be performed quickly.
Further, in the method according to claim 9, since each process related to the manufacture of the revetment block does not require special technology or special equipment, the developing countries lacking materials or catastrophic damage. It can be easily implemented even in disaster-stricken areas.
Therefore, the revetment block having high performance and durability can be manufactured and supplied inexpensively and easily.

The invention according to claim 10 has the same effect as the invention according to claim 9.
Further, in the invention described in claim 10, at least part or all of the rock used as a material for manufacturing the revetment block is collected from the area where the debris flow is generated, the construction area of the revetment block, or both. By doing so, it is possible to save costs for removing and disposing of waste stone from disaster areas such as debris flow and construction areas. Moreover, since materials necessary for manufacturing the revetment block according to the present invention can be obtained free of charge, the cost for manufacturing the revetment block can be reduced.
As a result, the debris flow and other disaster areas and waste stones in the construction area can be used effectively as a raw material for the revetment block, greatly reducing the cost burden for constructing the revetment in the disaster area and construction area. Can do.
In addition, waste stones contained in the debris flow and waste stones collected from the river (river) shore and coast are removed from the brittle and weak areas while moving to the place, leaving only hard parts. It is in a state. For this reason, the intensity | strength of the revetment block manufactured by the method of Claim 10 can also be raised by using such a rock (waste stone).
Furthermore, in particular, the rock collected from the construction area of the revetment block manufactured by the method according to claim 10 is originally in the landscape of the land and is sometimes touched by humans. When such a rock is used and at least a part of the rock is exposed from the slope forming surface of the revetment block produced by the method according to claim 10, the slope formed using the revetment block. Can be harmonized with the scenery of the area.

(A) It is a conceptual diagram of the bank protection block concerning Example 1 of this invention, (b) It is AA sectional view taken on the line in FIG. 1 (a). (A) It is sectional drawing of the rock used for the revetment block concerning Example 1 of this invention, (b) It is a BB sectional view taken on the line in FIG. 2 (a). (C) is sectional drawing which shows the other example of arrangement | positioning of the metal wire in the rock which concerns on Example 1 of this invention. (A)-(c) is a conceptual diagram which shows the manufacturing process of the revetment block based on Example 1 of this invention. (A), (b) is a conceptual diagram of the revetment block concerning the modification of this invention. It is sectional drawing which shows an example of the revetment which concerns on Example 2 of this invention. It is a perspective view which shows an example of the revetment which concerns on Example 3 of this invention.

DESCRIPTION OF SYMBOLS 1A-1C ... Revetment block 1a ... Slope part 1b ... Slope 1c ... Slope part 2 ... Rock 3 ... Metal wire 3A ... 1st metal wire 3B ... 2nd metal wire 3a ... Bending part 4 ... Concrete 5 ... Hole 6 ... Adhesive 7 ... Frame 8 ... Steel 9 ... Rock connecting body 10 ... Revetment (retaining wall)
DESCRIPTION OF SYMBOLS 11 ... Artificial riverbed or artificial seabed 12 ... 2nd revetment block 13 ... Revetment 14 ... Main shaft 14a ... One end 14b ... Other end 15a-15c ... Branch 16 ... Projection 17 ... Rock 18 ... Construction surface

Hereinafter, the bank protection block according to the embodiment of the present invention, the manufacturing method thereof, and the bank protection will be described in detail with reference to Examples 1 to 3.

A revetment block according to Embodiment 1 of the present invention will be described with reference to FIG. FIG. 1A is a conceptual diagram of a revetment block according to Embodiment 1 of the present invention, and FIG. 1B is a cross-sectional view taken along line AA in FIG.
The revetment block 1A according to the first embodiment includes, for example, a slope forming portion 1a formed by concrete 4 and a holding portion 1b, and the first metal wire 3A that is the metal wire 3 and the first metal wire 3 This is a solid revetment block including a rock connecting body 9 tightened together by two metal wires 3B. In addition, description of the metal wire 3 was abbreviate | omitted in FIG.1 (b).
Such a revetment block 1A according to Example 1 is obtained by replacing a part of concrete 4 which is a material constituting the revetment block 1A with a rock 2. Therefore, there is an effect that it is possible to provide a revetment block having a load and strength equal to or higher than those of the revetment block formed by molding only the concrete 4 while reducing the amount of the concrete 4 used when manufacturing the revetment block 1A. .
In addition, the revetment block 1A according to the first embodiment is a rock connected body 9 in which a plurality of rocks 2 are connected by a metal wire 3A or a second metal wire 3B, which is a first metal wire 3, but the outer shape thereof is: Since it is a concrete molded body, it has a specific shape. Therefore, when a slope (retaining wall) is formed using the revetment block 1A according to the first embodiment, it does not require advanced stonework technology. A strong slope can be formed by stacking the revetment block 1A in combination with sand or sand, or by stacking only the revetment block 1A. Therefore, it is possible to reduce the cost for the construction of the revetment.
In FIG. 1a, a hexagon is adopted as an example of the planar shape of the slope forming surface 1c of the revetment block 1A. However, the planar shape of the slope forming surface 1c does not necessarily have to be a hexagon. It may be a regular polygon as described above or a polygon with unequal sides. Further, the shape of the slope forming part 1a may be circular or elliptical.

Further, in the revetment block 1A according to the first embodiment, as shown in FIG. 1 (a), at least one from a molding surface formed of concrete, more specifically, from a slope forming surface 1c of the revetment block 1A. A part of the surface of the rock 2 may be exposed.
In this case, when a revetment is formed using the revetment block 1A according to the first embodiment, the slope becomes an appearance that is covered with rocks 2 (natural stones), so that the scenery can be harmonized with nature. it can. As a result, it has the effect that the aesthetics of the revetment formed using the revetment block 1A which concerns on Example 1 can be improved.
Further, in the revetment block 1A according to the first embodiment, even when a part of the rock 2 is bare from the slope forming surface 1c that is a molding surface of the concrete 4 as described above, the rocks 2 are made of metal wires 3. Since it is firmly tightened by a certain first metal wire 3A or second metal wire 3B, there is no risk that the rock 2 will fall off the slope forming surface 1c when the revetment block 1A is used. Therefore, the designability of the revetment block 1A according to the first embodiment can be enhanced and the reliability and safety can be ensured.

Moreover, the 1st metal wire 3A and the 2nd metal wire 3B which are the metal wires 3 which fasten the rocks 2 mutually play the role similar to the steel frame in reinforced concrete. For this reason, at the time of manufacturing the revetment block 1A, the revetment block 1A according to the first embodiment exhibits a strength equal to or higher than that of the reinforced concrete revetment block without embedding a frame formed of a metal wire in the concrete 4 molded body. Can be made.
In addition, in the revetment block 1A according to the first embodiment, the metal wire 3 (the first metal wire 3A or the second metal wire 3B) that fastens the rocks 2 does not appear outside the concrete 4 molded body. Therefore, since the metal wire 3 is not directly exposed to water etc. at the time of use of the revetment block 1A, the progress of the corrosion becomes slow. Therefore, the durability of the revetment block 1A according to the first embodiment can be enhanced.
As a result, when a revetment (retaining wall) is formed using the revetment block 1A according to the first embodiment, the slope can be strongly protected over a long period of time.

Furthermore, at least part or all of the rocks 2 constituting the revetment block 1A according to the first embodiment, waste stones included in the debris flow, waste stones collected from the revetment construction area, or both, Alternatively, it may be divided into appropriate sizes as necessary.
In this case, in manufacturing the revetment block 1A, the cost for purchasing or procuring the rock 2 as a material can be greatly reduced. In addition, it is possible to save the cost of disposing of the waste stones in the affected areas where debris flow has occurred or in the construction area of the revetment.
In addition, the waste stones included in the debris flow and the waste stones collected from the construction area of the river (river) shore and the coast are fragile and fragile parts are scraped off while rolling to the place, and only hard parts are removed. Since it remains, when used as an aggregate of the revetment block 1A, sufficient strength and load can be applied to the revetment block 1A.
Therefore, the rock 2 collected from the debris flow, the rock 2 collected from the construction area of the revetment block 1A, or these at least part or all of the rock 2 constituting the frame of the revetment block 1A according to the first embodiment, or these By using both of these, a unique and significant effect that the revetment block 1A having sufficient weight and strength can be provided at low cost is exhibited.

In addition, in Fig.1 (a), in addition to the 1st metal wire 3A to which the edge part was previously fixed to the rock 2, it is not directly fixed to the rock 2, but the embedding direction (longitudinal direction) of the revetment block 1A ), The case where the rock connecting body 9 is formed by tightening the rocks 2 using the second metal wire 3B suspended in the circumferential direction is described as an example. The second metal wire 3B does not necessarily need to be used as long as the rock connected body 9 can be formed by tightening the rocks 2 sufficiently firmly with only 3A.
Further, by tightening the rocks 2 together using the second metal wire 3B in addition to the first metal wire 3A, the total amount of the metal wire 3 included in the concrete 4 compact is increased. That is, since this is synonymous with an increase in the amount of steel frames in the reinforced concrete, the strength of the revetment block 1A according to the first embodiment can be increased.

And in the revetment block 1A according to Example 1, when the proportion of the total volume of the rock 2 in the total volume of the revetment block 1A is 50% or more, all of the revetment block is formed only with the concrete 4 Compared to the above, it has the effect that a solid revetment block similar to that can be manufactured with less than half the amount of concrete 4 used.
In this case, since the cost concerning the material for manufacture of the revetment block 1A can be reduced, it has the effect that the high-quality revetment block 1A can be provided at low cost. Moreover, at this time, when the rocks collected from the construction area of the debris flow or the revetment block 1A are used as the rock 2, the cost for manufacturing the revetment block 1A can be further reduced.
As a result, even in developing countries where resources and materials are scarce, it is possible to produce and provide a high-quality revetment block 1A at low cost.

Next, the manufacturing method of the revetment block 1A which concerns on Example 1 is demonstrated in detail, referring FIG. 1 thru | or FIG.
2A is a cross-sectional view of a rock used for the revetment block according to the first embodiment of the present invention, and FIG. 2B is a cross-sectional view taken along line BB in FIG. 2A. Moreover, (c) is sectional drawing which shows the other example of arrangement | positioning of the metal wire in the rock which concerns on Example 1 of this invention. 3 (a) to 3 (c) are conceptual views showing a manufacturing process of the revetment block according to Embodiment 1 of the present invention. In addition, the same code | symbol is attached | subjected about the part same as what was described in FIG. 1, and the description about the structure is abbreviate | omitted.
The manufacturing method of the revetment block 1A according to the first embodiment is roughly constituted by three steps.
Specifically, the manufacturing method of the revetment block 1A according to the first embodiment includes a first step of fixing the first metal wire 3A that is the metal wire 3 to the rock 2 as shown in FIG. After the first step, a plurality of rocks 2 to which the first metal wire 3A is fixed protrudes from the frame body 7 in a frame body 7 formed by welding a metal wire or the like having sufficient rigidity. The second step of tightening the rocks 2 together with the first metal wire 3A to make the rock united body 9 integral, and after completing the second step, The rock connecting body 9 is taken out from the container, and the rock connecting body 9 is accommodated in a concrete 4 molding form, and the outer shape of the rock connecting body 9 is formed while the concrete 4 is filled in the gap of the rock connecting body 9 to form a solid. It is composed of a third step with a revetment block 1A that is concrete 4. .

First, a method for fixing the first metal wire 3A to the rock 2 will be described in detail with reference to FIG.
As a method for fixing one end portion of the first metal wire 3A to the rock 2, for example, as shown in FIGS. 2 (a) and 2 (b), the surface of the rock 2 is bottomed using a drill or the like. The hole 5 is formed (step S11), and after completing the step S11, the adhesive 6 is filled in the hole 5, and the end of the first metal wire 3A is inserted thereinto, and the adhesive 6 is inserted. There is a method of fixing the first metal wire 3A to the rock 2 by hardening (step S12).
In this case, in a series of processes (steps 11 and S12) for fixing the first metal wire 3A to the rock 2, a process of forming the holes 5 in the rock 2 (step S11) and filling the holes 5 with the adhesive 6 Then, the step of inserting the end portion of the first metal wire 3A (step S12) can be performed separately. That is, the work of fixing the first metal wire 3A to the rock 2 can be performed by division of labor.
Further, as a method for fixing the first metal wire 3A to the rock 2, although not particularly illustrated, a wedge having a ring or hook is driven into the rock 2 to fix the ring or hook to the rock 2, and then this ring or There is a method of fixing by hooking the first metal wire 3A to the hook.
Note that the method for fixing the first metal wire 3A to the rock 2 is not necessarily limited to the above-described one. When the rock connection body 9 is formed by the plurality of rocks 2, the first metal wire 3A is fixed to the first metal wire 3A. Any method may be used as long as the metal wire 3A is firmly fixed so as not to come off.

Furthermore, as shown in FIGS. 2 (a) and 2 (b), the attachment position of the first metal wire 3A to the rock 2 may be provided at two locations so as to form a pair in the cross section of the rock 2, As shown in FIG. 2C, the arrangement of the first metal wires 3 </ b> A is even (including the concept of substantially equality) so as to be rotationally symmetric (including the concept of approximate rotational symmetry) in the cross section of the rock 2. You may arrange.
Further, the attachment position of the first metal wire 3A is not necessarily arranged on the same plane in the cross section of the rock 2, but at least two or more of the first metal wires 3A are not necessarily arranged evenly around the trunk of the rock 2. By fixing the metal wire 3 </ b> A 1, when the rocks 2 are connected to form the rock connection body 9, the rocks 2 can be fastened in a stable state, and the first fixed to the rock 2. One metal wire 3A can be used effectively without waste.
Further, the bent portion 3a is formed by bending the lead-out portion of the first metal wire 3A fixed to the rock 2 from the hole 5, so that the rock 2 that has been fixed to the first metal wire 3A is stored. In addition, the connecting work of the rock 2 in the subsequent second step can be facilitated.
Further, the first metal wire 3A may be bent after the end portion is fixed to the rock 2 to form the bent portion 3a, but the end portion of the first metal wire 3A in which the bent portion 3a is formed in advance. May be inserted into the hole 5 formed in the rock 2 and fixed.

Then, the 2nd process in the manufacturing method of the revetment block concerning Example 1 is explained, referring to FIG.
In the second step in the method of manufacturing a revetment block according to the first embodiment, first, a frame body 7 formed into a frame shape by welding a steel material 8 made of a metal wire or the like having sufficient rigidity is prepared. A plurality of rocks 2 in which the first metal wire 3A has been fixed in the first step (steps S11 and S12) are accommodated in the frame 7 so as not to protrude from the frame 7. However, the rocks 2 are fastened and fixed by the first metal wire 3A to form the rock connecting body 9 as shown in FIG. 3B (step S21). FIG. 3C shows a state (step S22) in which the rock connecting body 9 is taken out from the frame body 7.

In step S21 in the second step, when the rock 2 cannot be connected sufficiently firmly with only the first metal wire 3A fixed in advance to the rock 2, the second portion whose end is not fixed to the rock 2 is used. It is preferable to connect the rocks 2 using the metal wire 3B.
As described above, the rock 2 is firmly connected to each other using the second metal wire 3B in addition to the first metal wire 3A, so that even when the rock connected body 9 is taken out from the frame body 7, the mold can be easily formed. The rock connected body 9 which does not collapse can be produced. In addition, when the second metal wire 3B is used in addition to the first metal wire 3A, as described above, the number of members corresponding to the steel frame in the reinforced concrete increases, so the revetment block 1A. The strength of can be increased.
In addition, since it is necessary to accommodate all the rock coupling bodies 9 produced in this 2nd process in a concrete shaping | molding mold in the following 3rd process, the frame 7 is the following 3rd. It is necessary to make it the same size as the concrete molding form used in the process or slightly smaller than that.

And the 3rd process in the manufacturing method of the revetment block concerning Example 1 puts the rock connection object 9 produced in Steps S21 and 22 in the concrete molding form which is not illustrated as mentioned above. If necessary, after completely accommodating except the rock 2 part to be intentionally exposed (step S31; not shown), the concrete 4 is filled in the gap of the rock connecting body 9 to specify the outer shape. What is necessary is just to shape | mold and remove a frame (step S32; not shown).

According to the manufacturing method of the revetment block according to the first embodiment as described above, that is, according to the above-described steps S11 to S32, although the amount of the concrete 4 used is significantly smaller than the conventional, In addition, a revetment block 1A having a strength equal to or higher than that of a reinforced concrete revetment block can be produced.
Moreover, step S11, S12, the 2nd process, and the 3rd process in the manufacturing method of the revetment block concerning Example 1 can be performed separately, respectively. That is, since the division of labor can be performed, the mass revetment block 1A according to the first embodiment can be efficiently mass-produced by the flow work.
As a result, the manufacturing cost of the revetment block 1A according to the first embodiment can be reduced, and also from this point, the revetment block 1A according to the first embodiment can be provided at a low price.

Here, a bank protection block according to a modification of the first embodiment will be described with reference to FIG. The revetment block according to the modification of the first embodiment has the same configuration as the revetment block 1A according to the first embodiment described above, but the plan shape of the slope forming surface 1c is shown in FIG. 1 (a). It is different from the block 1A. In addition, the manufacturing method of the revetment block which concerns on the modification of Example 1 is a frame body 7 used by step S21 in the manufacturing method of the revetment block which concerns on the above-mentioned Example 1, and the concrete shaping | molding used by step S31. Since the shapes of the molds are the same except that they are different, detailed description thereof is omitted.
As shown to Fig.4 (a), the revetment block 1B which concerns on the modification of Example 1 makes the planar shape of the slope formation surface 1c a pentagon, for example.
The revetment block 1B according to the first modified example may form a revetment by combining the revetment block 1B and natural stone, or, as shown in FIG. A revetment may be formed in combination with the hexagonal revetment block 1A in plan view. In particular, in the latter case, it is possible to easily form a slope having a curve or a curved surface.
Moreover, as shown in FIG.4 (b), 1C of the seawall blocks which concern on the other modification of Example 1 make the planar shape of the slope formation surface 1c into an unequal square. More simply, a revetment block 1C according to another modification of the first embodiment is obtained by dividing the revetment block 1A shown in FIG. 1 (a) into two equal parts so as to pass on the central axis thereof.
In this case, by forming a revetment by combining the revetment block 1A shown in FIG. 1A and the revetment block 1C shown in FIG. be able to.
Thus, the revetment block according to the present invention does not necessarily need to unify the planar shape of the slope forming surface 1c into one type, and further does not necessarily need to be a regular polygon.

In other words, the revetment block according to the present invention can easily form slopes of various shapes as another effect when a revetment is formed by combining at least two types of revetment blocks having different planar shapes of the slope formation surface 1c. The effect of forming is demonstrated.
Further, in addition to the revetment block according to the present invention composed of at least two types having different plane shapes of the slope-forming surface 1c, the revetment is formed using rocks (natural stones) together, and thus the present invention is concerned. Variations in the form of slopes that can be formed using revetment blocks can be further expanded.
Compared to the case where the revetment block according to the present invention is spread all over the slope of the revetment, when the slope is formed by combining the revetment block according to the present invention and natural stone (rock 2), The cost for the materials can be further saved.

Here, as a revetment block according to the first embodiment and a revetment block according to a modification thereof, a case where the cross section of the retaining portion 1b is smaller in diameter than the cross section of the slope forming portion 1a will be described as an example. Yes. In the manufacturing process, the rock connecting body 9 is taken out from the frame body 7 (step S22), and in the subsequent process, the rock connecting body 9 is accommodated in a concrete molding form (not shown). (Step S31) It is necessary, and for this purpose, the rock connecting body 9 is put in and out of the frame body 7 and the concrete molding form in this manner.
However, the frame body 7 used in step S22 is configured so as to be partially disassembled so that the molded rock connecting body 9 can be easily taken out of the frame body 7, or the concrete molding formwork By devising the division structure, the revetment block according to the first embodiment and the revetment block according to the modification need not necessarily be limited to the forms shown in FIGS. 1 and 4.
That is, for example, a protrusion may be formed on the surface of the holding portion 1b to increase its surface area, and the bank protection block may be configured to be more difficult to drop off from the slope. That is, it is sufficiently possible to make the form of the revetment block according to the present invention more complicated.

Next, a revetment formed using a revetment block according to the present invention will be described as Example 2 with reference to FIG.
FIG. 5 is a cross-sectional view showing an example of a revetment according to Embodiment 2 of the present invention. The same parts as those described in FIGS. 1 to 4 are denoted by the same reference numerals, and description of the configuration is omitted.
As shown in FIG. 5, a revetment block according to the present invention on a river (river) bank or a coastal slope, for example, a revetment block 1A, or a revetment block 1A and a revetment block 1B, a revetment block 1A and a revetment block A revetment 10 according to the second embodiment is formed by laying 1C or all of the revetment blocks 1A to 1C without gaps to form a slope.
In this case, even if there are a plurality of types of outer shape of the revetment block according to the present invention, since they are all molded products formed in a specific shape by the concrete 4, it is easy to form a slope by combining them. In addition, as described above, the revetment block of the present invention formed by molding such a concrete 4 uses a large amount of rock 2 as its aggregate, and thus is a molded product of concrete 4. Nevertheless, less concrete 4 is required for its production.
Therefore, according to the revetment 10 according to Example 2, it is possible to form a strong slope with the use of a small amount of concrete 4, and at the same time have two excellent effects that the construction is extremely easy. Yes.

Although not particularly shown, the revetment 10 may be formed by combining rocks 2 (natural stones) that are not concrete-molded in addition to the revetment blocks (for example, revetment blocks 1A to 1C) according to the present invention.
In this case, since the amount of concrete 4 required for forming the revetment 10 according to the second embodiment can be further reduced, the cost for the construction can be further saved.
Further, as the rock 2 used together with the revetment block according to the present invention, for example, waste stone collected from a debris flow, waste stone collected from a construction area of the revetment 10, or both may be used. In this case, since the waste stone can be effectively utilized while removing the waste stone from the construction area of the revetment 10 according to the second embodiment, the cost for the procurement of the material for the revetment according to the second embodiment is further increased. It can be cheap.
As a result, even in developing countries that are scarce of materials and funds, it is possible to construct a strong revetment on the river bank or coast at a low cost. This effectively protects the land and human lives from natural disasters.

Moreover, as shown in FIG. 5, the revetment block according to the present invention is laid not only on the river (river) shore and coast, but also on the river (river) bottom or sea bottom, or in combination with rock 2 (natural stone). Alternatively, it may be used as an artificial riverbed or an artificial seabed 11.
In this case, a strong artificial riverbed or artificial seabed 11 can be formed, and erosion of the river (river) bottom or the seabed can be effectively prevented. Also in this case, since the amount of use of the concrete 4 can be reduced, there is an advantage that a strong artificial riverbed or artificial seabed 11 can be constructed at low cost.

The revetment according to Example 3 of the present invention will be described with reference to FIG.
FIG. 6 is a perspective view showing an example of a revetment according to Embodiment 3 of the present invention. The same parts as those described in FIGS. 1 to 5 are denoted by the same reference numerals, and description of the configuration is omitted.
As shown in FIG. 1 and FIG. 4, the revetment block according to Example 3 is a second revetment block 12 having a completely different form from the revetment block according to Example 1 and the revetment block according to Example 1 (for example, A revetment 13 is formed by combining the revetment block 1A) with a slope.
More specifically, the revetment 13 according to the third embodiment is suspended from a cylindrical or polygonal column main shaft 14 and a side surface of one end portion 14a of the main shaft 14 so as to be rotationally symmetric about the main shaft 14. At least three columnar or polygonal columnar branch portions 15a to 15c provided, and positions on the side surfaces near the other end portion 14b of the main shaft 14 that coincide with the suspended position of the branch portion 15a in the circumferential direction of the main shaft 14 A slope is formed by a combination of the second revetment block 12 having at least one protrusion 16 projecting on the seam and the revetment block according to the present invention (for example, the revetment block 1A).

The second revetment block 12 used for the revetment 13 according to the third embodiment has an excellent slope retention and protection effect by including the protrusion 16 and the branch portions 15a to 15c on the main shaft 14. is doing. When a slope is formed using such a second revetment block 12, a rock 17 such as a natural stone is used in the gap between the second revetment block 12. In this case, there is a merit that it is possible to form a slope with a stone wall-like landscape that is strong and in harmony with nature. there were.
On the other hand, when the revetment block according to the present invention has a tapered spindle shape as shown in FIGS. 1 and 4, the revetment block according to the present invention is compared with the second revetment block 12 as shown in FIG. 6. There is a tendency to fall off from the slope.
Therefore, as a result of earnest research, the inventor combined the second revetment block 12 as shown in FIG. 6 and the revetment block according to the present invention (for example, revetment blocks 1A to 1C) to form a slope to form a revetment 13 By doing so, it succeeded in realizing the improvement of the slope protection effect of the revetment 13 and the ease of construction at the same time.

And the revetment 13 which concerns on such Example 3 arrange | positions the 2nd revetment block 12 side by side on the construction surface 18 first, for example (step S100), and a rock in the clearance gap between the 2nd revetment block 12 after this, for example. 17 is spread (step S101), and the revetment block 1A, which is a revetment block according to the present invention, is stacked on the rock 17 (step S102). A series of steps composed of the above steps S100 to S102 is taken as one set, and the series of steps is repeated as a set, so that a slope (retaining wall) having a desired height can be easily formed.
In this case, as the revetment block (for example, revetment block 1A) used for forming the revetment 13 of Example 3, the surface of at least one rock 2 is exposed from the slope forming surface 1c. By using the material, the landscape of the slope of the revetment 13 according to Example 3 can be made as natural as if the rocks 2 were spread.

Moreover, when forming the revetment 13 which concerns on such Example 3, you may use combining two or more types of revetment blocks based on this invention from which the planar shape of the slope formation surface 1c differs.
In this case, the revetment 13 according to Example 3 having a curved or curved slope can be constructed very easily. Therefore, the cost required for the construction of the revetment 13 according to the third embodiment can be greatly reduced, and the construction period can be greatly shortened.
Moreover, as the rock 17 used with the revetment block according to the present invention and the second revetment block 12, waste stones in the debris flow, waste stones collected from the construction area of the revetment 13 according to Example 3, or both of these May be used. In this case, the cost for procurement of materials necessary for the construction of the revetment 13 according to the third embodiment can be saved while saving the cost for processing the waste stone.
Therefore, according to the revetment 13 according to the third embodiment, it is possible to provide a revetment that can be easily constructed and can form a strong slope, and can be constructed quickly and inexpensively.

As described above, the present invention can greatly reduce the amount of concrete used when manufacturing a revetment block, and effectively use waste stone collected from debris flow and construction sites as a material for the revetment block. A revetment block that is easy to construct and sufficiently durable than a revetment block that is entirely a concrete molded body, and that can harmonize the appearance of the slope with nature, and a method for producing the same It is a revetment and can be used in the fields of architecture and civil engineering.

Claims (10)

1. A rock (2), a metal wire (3, 3a, 3b) integrally connected to the rock (2), and a plurality of the rocks (2) are connected by the metal wire (3, 3a, 3b). A revetment block (1A to 1C) having a concrete (4) that forms an outer shape while filling a gap of a rock connected body (9).
2. One end of the metal wire (3a) is inserted into a hole (5) formed in the surface of the rock (2) and fixed to the rock (2). The revetment block described (1A-1C).
3. The rock connection body (9) connects the rock (2) by a second metal wire (3b) that tightens the metal wire (3a) in addition to the metal wire (3a). The revetment block (1A to 1C) according to claim 1 or 2.
4. The revetment block according to any one of claims 1 to 3, wherein a part of at least one of the rocks (2) is exposed from the surface of the concrete (4) forming the outer shape. (1A-1C).
5. The revetment according to any one of claims 1 to 4, wherein a ratio of the total volume of the rock (2) to the total volume of the revetment block (1A to 1C) is 50% or more. Block (1A-1C).
6. A revetment (10) formed by the revetment block (1A to 1C) according to any one of claims 1 to 5.
7. The revetment (10) according to claim 6, wherein the shape of the surface of the concrete (4) forming the outer shape of the revetment block (1A to 1C) is two or more kinds of polygons.
8. A revetment block (1A to 1C) according to any one of claims 1 to 5,
   At least three main shafts (14) having a cylindrical or polygonal column shape, and at least three of them are provided on the side surface of one end (14a) of the main shaft (14) so as to be rotationally symmetric about the main shaft (14). Columnar or polygonal column-shaped branch portions (15a to 15c), and the vertical positions of the branch portions (15a to 15c) and the main shaft (14) on the side surface in the vicinity of the other end portion (14b) of the main shaft (14). ) And a second revetment block (12) having at least one protrusion (16) projecting at a position coinciding with the circumferential direction of the revetment (12). 13).
9. A first step of fixing metal wires (3, 3a, 3b) to the surface of the rock (2);
   After the first step, the rock (2) provided with the metal wire (3a) is housed in the frame (7), and the metal wire (3a) is tightened or the second metal wire A second step of tightening the metal wire (3a) using (3b) to form a rock linking body (9);
   After the second step, the rock connection body (9) is taken out from the frame body (7) and accommodated in a concrete molding form, and then the concrete is placed in the gap between the rock connection body and the concrete molding formwork. And a third step of forming the revetment block (1A to 1C) by filling (4).
10. The revetment according to claim 9, wherein at least a part or all of the rock (2) is collected from a debris flow generation area and / or a construction area of the revetment block (1A to 1C). Block manufacturing method.

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