JP7148340B2 - Mat with Stair Concrete Block - Google Patents

Description

TECHNICAL FIELD The present invention relates to a mat with concrete blocks in which a plurality of concrete blocks used for a bank protection of a lake or a river are laid and collectively fixed to the mat, and more particularly, it relates to a mat with concrete blocks in which concrete blocks for stairs are arranged.

Recently, mats in which a large number of concrete blocks are spread over the embankments of lakes and rivers have been widely used due to their advantages such as simplicity of construction and completion of construction in a short time.
Conventional mats with concrete blocks, as disclosed in Patent Document 1 by the present inventor, are water-permeable non-woven mats made of polypropylene fiber, polyester fiber, or polystyrene fiber, or water-permeable non-woven mats combining these. A mat with a concrete imitation stone block that is spread, applied adhesive (e.g., epoxy resin adhesive) to the bottom surface of concrete blocks in multiple imitation stones, etc., is fixed to the mat, and is demolded from the formwork together with the mat after the imitation stone is fixed. providing.
These concrete blocks are popular because they can be made all at once according to the arrangement at the time of construction and can be constructed on revetments and watersides, but it is slippery when people stand on the revetment, and it is dangerous for children to go down to the surface of the water. Met.
Therefore, as disclosed in Patent Document 2, stepped concrete blocks have been developed that allow even children to safely descend to the surface of the water, and are being constructed on the banks of many lakes and rivers.

Japanese Patent Application Laid-Open No. 2007-231526 JP 2012-102596 A

By the way, the staircase concrete block on the mat is too high and the stepping space is narrow, so it may be dangerous for people to climb up and down. However, there was a problem that the size became large, and it took time and effort for transportation and construction.
The present invention has been made in view of such inconveniences, and can reduce the height of stairs in a mat with staircase concrete blocks, widen the area of stepping stones, reduce the weight of the entire mat, and transport it. To provide a mat with staircase concrete blocks which facilitates construction and makes the whole mat flexible.

In order to solve the above-mentioned problems, the invention of claim 1 arranges stair blocks having a triangular cross-section on a mat vertically when installed, and when constructing the stair blocks, the vertical front wall and the horizontal stepping stones A mat with staircase concrete blocks forming a part and a back wall, wherein the space between the front wall and the back wall of the vertically adjacent stair blocks has a horizontally elongated rectangular cross section and a predetermined width. While arranging stones, the height (H1) from the mat on the front wall side of the interstitial stone and the height (h2) of the back wall of the stair block are made the same,
The interlocking stones having a rectangular cross section and a predetermined width, which are elongated in the horizontal direction, are arranged in two or more in the lengthwise direction of the stair block, and the width of the stair block as a whole is the same as the width in the left and right direction of the stair block. This mat with staircase concrete blocks is characterized in that the side walls of the blocks are provided with protruding guide parts for maintaining joint intervals .
The invention according to claim 2 is the mat with stair concrete blocks according to claim 1, wherein the front wall of the lower end of the interlocking stone has a height (H1) from the mat and a rear wall of the stepping stone portion of the stair block. It is characterized by making the height (h2) equal to 1 to 2 cm and widening the planar area of the stepping stone portion of the substantial top wall.
The invention of claim 3 is the mat with stair concrete blocks according to claim 1 or 2, wherein a pseudo-stone pattern is applied to the front wall and the stepping stone portion of the stair block, and the corner portion of the stair block and the inter-stone Anchor pins are driven into the mat in the gaps between the joints of the corners of the staircase blocks and interlocking stones to stop the descent of the staircase blocks.

As described above, according to the present invention of claim 1, in the mat with stair concrete blocks, the height of the stairs in the mat with stair concrete blocks can be reduced, the area of the stepping stone portion can be increased, and the mat To provide a mat with a staircase concrete block which reduces the weight as a whole, facilitates transportation and construction, and makes the whole mat flexible. In addition, since the front wall is made vertical during construction, the stepping stone portion 22 and the front wall 23 of the mat form a mountain shape, and the mat 1 can be easily removed from the block formwork 52 as shown in FIG.
In addition, in the mat with stair concrete blocks, the height (H1) of the front wall of the interstitial stone from the mat and the height (h2) of the back wall of the stair block 2 were made the same, so the plane of the stepping stone part of the stair block The area of the can be widened, and it is possible to descend to the surface of the water more safely.
Furthermore, since the number of interstitial stones is two or more in the longitudinal direction, the number of folds of the mat can be increased, the mat becomes more flexible, and the construction becomes easier.
In addition, since the side wall of any of the stair blocks is provided with a guide portion for maintaining the gap between the joints, it is possible to provide a constant gap between the joints of the stair blocks of the adjacent mats, thereby facilitating the stair blocks. can be aligned and placed.
Next, according to the invention of claim 2, the height (H1) of the front wall of the stair block 2 of claim 1 from the mat and the height (h2) of the back wall 221 of the stepping stone portion 22 are set to 1 to It is possible to reduce the thickness of the interstitial stone and increase the surface area of the stepping stone portion 22 of the substantial top wall, thereby making the entire mat with concrete blocks for stairs lighter. can be made easier.
Further, according to the invention of claim 3, in the mat with stair concrete blocks of claim 1 or claim 2, the front wall and the stepping stone portion of the stair block are provided with a pseudo-stone pattern, and the corner portion of the stair block It is possible to stop the descent of the staircase block and the interlocking stone by driving the anchor pin into the mat in the gap between the joints of the corners of the interlocking stone .

1(a) is a plan view, FIG. 1(b) is a left side view, FIG. 1(c) is a front view, and FIG. Explanatory drawing of a state in which a plurality of mats with stair blocks in Fig. 1 are installed on a bank protection, Fig. 3(a) is a left side view, Fig. 3(b) is a front view, Fig. 3(c) is a plan view from above, FIG. 4(a) is a plan view of this embodiment with one interlocking stone, FIG. 4(b) is a plan view of another embodiment with two interlocking stones, A side view of the stepping stone part which is the stair block of FIG. A cross-sectional side view of a state in which the stepping stones of the stair block and interlocking stones are connected to the mat 1 and fixed to the mat and the base (revetment) G with anchor pins during construction. 5(a) is an external view of the gate-shaped anchor pin 41, b) the wide staircase block 2 is fixed to the mat 1, and the anchor pin 42 is used to secure the base (revetment) G at the time of construction. Side sectional view of the state fixed to A plan view of the formwork before placing concrete in the mat with stair blocks, A side view of placing concrete in the formwork of FIG. Explanatory drawing for explaining the manufacturing process of joining the mat, the stair block and the interlocking stone used in this embodiment, Explanatory diagram for explaining the manufacturing process of applying the adhesive in FIG. FIG. 4 is a perspective view of a state in which both ends of the stair block assembly mat are gripped and bent by a crane;

The most characteristic feature of the present invention is a mat with staircase concrete blocks, in which stair blocks having a triangular cross section are arranged vertically on the mat when installed, and the stepping stones on the upper wall of the stair block form a staircase. In addition, interstitial stones having a rectangular cross-section and a predetermined vertical width (x) are arranged between the staircase blocks in the vertical direction to adjust the distance between them.

Hereinafter, an embodiment of a mat with staircase concrete blocks using wide and narrow staircase blocks having a triangular cross section according to the present invention will be described with reference to the drawings.
FIG. 1 is an overall view of a mat with stepped concrete blocks according to the present invention, FIG. 1(a) being a plan view, (b) being a left side view, and (c) being a front view.
The mat 1 normally has an area of 1.9 m in width and 6.665 m in length, as shown in FIG. As for the fiber, the upper surface, which is in contact with the concrete block, is a polypropylene fiber non-woven fabric that is resistant to the chemical reaction of alkalis such as cement materials. A rope is built in.

This mat 1 is made by arranging a plurality of staircase blocks 2 and block aggregates X of interstitial stones 3 in a staircase pattern, and has an average thickness of 3 mm or more. Since the total weight of the mat 1 is about 1 ton, it must have the strength to withstand the lifting of the mat 1 during construction. It is below. A material with a water permeability of 1 x 10-2 cm/sec was used.
It should be noted that the reason why the material is water-permeable is to allow the entry and exit of water and air. As another example, a nonwoven fabric made of a blend of polypropylene fiber and polyester fiber, or a nonwoven fabric made of a composite material in which polypropylene fiber is arranged on the surface side, which will be the upper surface when applied, and strong polyester fiber is arranged on the lower side. may be used.

On this mat 1, four rows of staircase blocks 2 having a concrete cross section of approximately triangular shape and whose upper surface wall serves as a stepping stone are arranged, and between the staircase blocks 2 in the vertical direction, the distance between them is rectangular in cross section for adjusting the distance. A stone 3 having a predetermined width is arranged at .
As shown in FIG. 3, the stair block 2 having a substantially triangular cross section has a bottom wall 21 in contact with the mat 1, a stepping stone portion 22 forming a horizontal flat portion of the top wall of the stair block 2, and left and right side walls. 24 and a front wall 23 on the front side. A substantially vertical lower end wall 231 is formed at the lower end of the front wall 23 and a substantially vertical rear wall 221 is formed at the rear end of the stepping stone portion 22 .
Between the stair blocks 2 in the vertical direction, a stone 3 having a rectangular cross section and a predetermined vertical width (y) is arranged for adjusting the distance therebetween.
In this embodiment, as shown in FIG. 4(a), the interstitial stone 3 has a horizontally elongated rectangular cross section and a predetermined width. However, as shown in another embodiment of FIG. 4(b), there are two interlocking stones 3 which are half the width of the interlocking stone 3 shown in FIG. 4(a). This number may be three or more, which increases the number of bent portions of the mat 1, so that the number of folds of the mat can be increased, making the mat more flexible and easier to install.
Since the height of the front wall 31 at the lower end of the interstitial stone 3 from the mat and the height of the back wall 221 of the stepping stone portion 22 of the stair block 2 are made the same, the area of the plane of the stepping stone portion 22 of the substantial stepping stone can be widened, and people such as children can get down to the surface of the water more safely.

Each block is described in detail below.
The mat with staircase concrete block is produced collectively with concrete staircase block 2 and interlocking stone 3 on mat 1, as disclosed in the above-mentioned patent document.
[Stair block 2]
First, the staircase blocks 2 arranged in four rows on one mat 1 continuously in the vertical direction in the central portion will be described with reference to FIGS. 3 and 5. FIG.
As shown in FIG. 3( a ), after construction, the bottom wall 21 has an inclined surface with an inclination angle α of approximately 20 degrees and is smooth, and the stepping stone portion 22 is a substantially horizontal square of 30 cm, the front wall 23 is substantially vertical and has a width of 30 cm and a height (h1) of about 15 cm, and the rear end of the front wall 23 has a height (h2) of about 1-2 cm. wall 25; The left and right side wall surfaces 24 are substantially in the shape of a right triangle, and the stepping stone portion 22, the front wall 23, the side wall 24, and the rear wall 25 have a simulated stone pattern imitating natural stone in this embodiment. Of course, as long as the concrete blocks have roughly the same shape, they may be unpatterned concrete blocks.
The upper surface of the staircase block 2 having a triangular cross section forms a substantially horizontal stepping stone portion (upper surface wall) 22 after construction, and the bottom wall 21 is fixed to the mat and parallel to the base G such as a revetment at the same time. The upper end of the bottom wall 21 continues to the rear wall 221 of the stepping stone portion 22 and contacts the front wall 31 of the interstitial stone 3 . Also, the lower end wall 231 of the front wall 23 of the stair block 2 is in contact with the rear wall 32 of the interstitial stone 3 .
In addition, guide portions protruding outward are provided here and there on the sides of the stair blocks 2 on the outermost periphery of each mat 1 with stair concrete blocks, but the side surfaces of the stair blocks 2 of the mats 1 adjacent to each other on the left and right are also slightly uneven. In addition, in order to obtain the flexibility of the mat 1, it is necessary to provide joints with a gap of about 1 to 2 cm. For this reason, it is a guide to keep all joints with a gap of about 1 to 2 cm from each other. The staircase block 2 with this label may be provided every appropriate number of staircase blocks 2 . Without this guide portion 25, it would take a long time to lay the cable, and the finish would be poor.

[Maishi 3]
Next, the interstitial stone 3 will be described mainly with reference to FIGS. is arranged to adjust the interval between the staircase blocks 2 arranged above and below. FIG. A plan view, FIG. 4(b) is a plan view of another embodiment in which there are two interlocking stones.
In FIG. 4(a), one interlocking stone 3 is placed between the stair blocks 2 that move up and down. y1) is about 30 cm, and is provided between the lower end wall 121 of the upper stair block 2 and the rear wall 221 of the lower stair block 2. As described above, the width (y1) is about 30 cm and the height (Fore-and-aft direction when viewed from the bottom when installed) (x) is 6 cm, the upper surface part 33 of the upper surface is almost flat, and the average height (H) is about 1 to 3 cm. is.
As shown in FIG. 5, the height (H1) of the front wall 31 at the lower end of the interlocking stone 3 from the mat and the height (h2) of the back wall 221 of the stepping stone portion 22 in the stair block 2 are 1 to 2 cm. Since the stepping stone portion 22 of the top wall is substantially the same as the level, the plane area of the stepping stone portion 22 of the upper surface wall can be substantially increased, so that a person such as a child can descend to the water surface more safely. Also, the rear wall 32 at the upper end of the interstitial stone 3 has a height (H2) from the mat and is slightly higher than the height (H1) of the front wall 31 to improve drainage. In addition, as can be seen from FIG. 4, if the vertical width x is increased, the substantial area of the stepping stone portion 22 including the interstitial stone 3 increases, so the vertical width x can be increased or decreased as necessary. Just do it.

FIG. 4(b) shows another embodiment, in which two interstitial stones 3a and 3b are arranged in series in the horizontal direction between the bottom end wall 121 of the upper stair block 2 and the rear wall 221 of the lower stair block 2. The shape of each interlocking stone 3a, 3b is such that the width of each interlocking stone 3 is half the width of the stair block 2 and the width (y2) is about 15 cm, and the width of the series is 30 cm. The width (front-rear direction) (x) is 6 cm, the upper surface portion 33 of the upper surface is almost flat, and the average height (H) is about 1 to 3 cm.
In this embodiment, since there are two interlocking stones 3a and 3b, the number of folds of the mat 1 can be increased, the flexibility of the mat 1 is increased, and construction (installation) is facilitated. Of course, it may be finer to three or more.

[Manufacturing method of mat with stair concrete block]
Next, a method for manufacturing the mat with staircase concrete blocks used in this embodiment will be described.
As shown in the plan view of the formwork in FIG. 8 and the side view in FIG. 9, the formwork 5 with the staircase block 2 and the interlocking stone 3 described above is mounted on the mat 1 with the staircase concrete block (see FIG. 1). The block forms 52 are collectively arranged as many as the number of the staircase blocks 2 and the interstitial stones 3, and the plurality of block forms 52 for concrete are collectively integrated into one large form 5. .
In this rectangular formwork 5, the outer frame 51 around it is made of FRP resin, and the block formwork 52 forming the inner stair block 2 and interlocking stone 3 is made of polyurethane resin. ) are embedded with reinforcing bars and steel plates to reinforce the entire formwork.
The overall shape of the formwork 5 is such that a strong steel base frame 53 is provided on the outer periphery of the outer frame 51, and a reinforcing steel frame 55 is hung between the pair of outer frames 51 in the longitudinal direction on the bottom surface 58 (see FIG. 9). A guided member 56 made of H-steel perpendicular to the longitudinal direction is hung on the left and right sides for reinforcement.

In addition, substantially in the center of the inner side of the outer frame 51 in the longitudinal direction, there are provided fork insertion members 57a and 57b made of rectangular lumber into which the forks 61a and 61b of the forklift 6 (see FIG. 12) are inserted. is hollow with a rectangular cross section, into which the fork inserting members 57a and 57b are inserted, and these rectangular timbers are stretched over for reinforcement.
With such a structure, by pouring cement milk (fresh concrete) into the formwork 5, a plurality of aggregated concrete stair blocks 2 and interstitial stones 3 corresponding to one mat can be produced all at once. can.

[Joining the stair block 2 and interlocking stone 3 to the mat]
As shown in FIG. 8, cement milk (ready-mixed concrete) is poured into the formwork 52 of each stair block 2 and the interstitial stone 3 of the formwork 5, and then, as shown in FIG. The surfaces of the molded bottom wall 21 of the stair block 2 and the bottom wall 34 of the interstitial stone 3 are exposed upward, and as shown in FIG. A cement milk-like material with a lower specific gravity than the cement itself, called Toro or Noro, floats on the upper surface.
In this state, which is not completely dry, the mat 1 is spread over the bottom wall 21 of the stair block 2 and the bottom wall 34 of the interstitial stone 3. - 特許庁
The surfaces of the bottom wall 21 of the stair block 2 and the bottom wall 34 of the interstitial stone 3 face upward because the cement milk seeps out to form a thin layer of cement paste, which is removed from the mat 1 by pressure. The mat 1 is mixed with the exuding compounded adhesive milk to adhesively secure the bottom wall 21 of the stair block 2 and the bottom wall 34 of the interstitial stone 3 .

In this way, the work of laying the mat over the entire surface of the bottom wall 21 of the staircase block 2 and the bottom wall 34 of the interstitial stone 3 is performed. As shown in FIG. The mat base cloth roll 12 of the mat 1 of the woven base cloth) is spread over the upper surface of the mold 5 while being pressed.
Then, as shown in FIG. 11, the compounded adhesive 7 having the above composition is sprayed onto the mold frame 5 (the adhesive material 7 can be removed from the mold frame 5) and the bottom wall of the staircase block 2 with a spray gun 71. 21 and the entire surface of the bottom wall 34 of the interstitial stone 3 are sprayed and coated all at once.

[Combination adhesive]
Next, this compounded adhesive 7 will be described in detail.
As the adhesive agent used in this example, compounded adhesive 7 having the composition shown in [Table 1] below was effective in view of the flexibility and strength of the mat.
[Table 1] Compounding ratio of compounded adhesive Compounding ratio: Adhesive 1 weight
Cement 1.5-6 weight
Water 1-5 weights The adhesive used here (Aica Kogyo Co., Ltd.: Croslen CMX-02) is SBR latex for mixing with mortar, and has good miscibility with cement milk (cement + water = ready-mixed concrete). It has good adhesion, good water resistance and alkalinity, and its main component is styrene-butadiene copolymer latex. It is also flexible and does not crack when bent.
The above mixing ratio is important. Too much cement milk to the adhesive will reduce the adhesive strength and the block will easily come off. becomes less and there is no air permeability.
In addition, the mat obtained by assembling blocks with the above-mentioned compounded adhesive of styrene-butadiene copolymer latex and cement milk has appropriate flexibility and can be wound into a roll for easy handling.
Finally, when the upper surface of the mat 2 coated with the compounded adhesive 7 is pressed by the bonding pressure tool 5 of the pressure roller, the compounded adhesive 7 seeps out from the back surface of the non-woven fabric mat 1. It is mixed with the compounded adhesive milk 7 exuded from the mat 2 under pressure to adhere and fix the mat 1 to the bottom wall 21 of the stair block 2 and the bottom wall 34 of the interlocking stone 3 .

As a result, the imitation stone block 1 and the mat 2 are adhered and fixed by the mixed adhesive 7, and when the hardening is completed, the staircase concrete block in which the step block 2, the interlocking stone 3 and the mat 1 are firmly integrated. The attached mat is removed from the formwork 5 using forks 61a,b (see FIG. 12) of a forklift 6 or the like.
In this case, the layer of compounded adhesive 7 that has been sprayed and applied to the entire upper surface of the mat 1 is simply and uniformly formed to a thickness of 0.3 mm to 1.0 mm, preferably 0.5 mm. After that, when pressure is applied with an adhesive pressure tool such as a pressure roller, the compounded adhesive 7 will seep out from the front surface of the nonwoven fabric (or base fabric) to the rear surface.
After that, a mat base fabric roll 12 of the nonwoven fabric mat 1 having a thickness of about 3 to 6 mm is spread while being pressed against the upper surface of the formwork 5, and then pressed with an adhesive pressure tool or the like to obtain the stair block 2 and the interstitial stone 3. and the mat 2 are bonded and fixed by the mixed adhesive 7, and when the hardening is completed, the concrete stair block assembly mat 1 in which the stair block 2 and the interlocking stone 3 and the mat 1 are firmly integrated is placed in the formwork. 5, forks 61a, b (see FIG. 12) of a forklift 6 or the like are used to remove the mold. Then, it is gripped by a pair of gripping tools 62a and 62b of the fork lift 6 and placed on a carrier for use in construction.

According to the mat 1 and the manufacturing method in which the assembly of blocks and the mat 1 are integrally manufactured according to the present embodiment, the compounded adhesive is sprayed at the end. The process can be simplified unlike the method of spraying the adhesive, laying a mat on top of it, and applying pressure. In addition, the compounded adhesive 7 that seeped out to the back of the block by applying pressure with an adhesive pressurizing tool or the like for bonding almost completely penetrates into the inside of the polyester fiber nonwoven fabric (or base fabric) of the mat itself. Therefore, the strength of the non-woven fabric or cloth is improved, and the deterioration of ultraviolet rays outdoors can be prevented.
In addition, the entire surface is covered with cement milk, which improves the weed control effect and increases the adhesive strength. Even when the compounded adhesive dries, it remains flexible, so cracks do not easily occur in the mat as in conventional mats. No vegetation or weeds grow, and since the fiber, cement milk, and adhesive of the mat do not feed the vegetation, the vegetation does not grow and has a weed control function, which simplifies maintenance and cleaning. In addition, since the mixed adhesive 7 is a mixture of cement milk and adhesive, the cement milk shrinks when dried, creating fine gaps through which the air can pass, so that the base soil under the mat 1 is well-ventilated. Avoid over-humidification. In the case of the present invention, there are many places where weeds grow because there are joints in the conventional mat, but with the above mat 1, weeds can be suppressed.

[Construction method]
Here, the construction method at the site will be explained. As shown in FIG. 2, the ends of the completed mats 1 are piled up from left to right using a working device such as a forklift 6 as shown in FIG. To go.
As described above, the mat 1 with concrete stair blocks, which is the premise of this embodiment, is a mat 1 with concrete stair blocks in which a plurality of concrete stair blocks 2 and interlocking stones 3 are adhered to the mat 1 in advance and integrated. . The integrated mats 1 with staircase concrete blocks are collectively loaded on a transport vehicle by a crane and transported to the site. is gripped by a gripper (not shown) provided on a crane, and as shown in Fig. 2, a mat 1 is laid directly on the embankment at the construction site, and both gripped portions A and B of the mat 1 are placed on the embankment E side and the river Fix to the F side. Furthermore, when laying the next mat 1, the joint portion D without the grip portion is placed on the grip portion C of the right end portion of the mat 1 that has already been constructed, and is brought into close contact with the stair block 2 that is being constructed. spread out.
After the mat 1 is spread over the base (revetment) G, a slight gap is created at the junction between the stair block 2, the corner portion, and the corner portion of the interstitial stone 2. In this gap, a gate-shaped anchor pin as shown in FIG. 7 is provided. Anchor pins 4 such as 41 (FIG. 7(a)) and nail-shaped anchor pins 42 (FIG. 7(b)) are driven into the mat 1 as shown in FIG. . Since there are many gaps due to the arrangement of the interlocking stones 3, the anchor pins 4 can be driven into the gaps by appropriately selecting them.
Thus, the work of arranging individual stair blocks 2 and interlocking stones 3 on site is troublesome. As long as it is fixed, the working efficiency is dramatically improved, the deterioration of the mat 1 is small, the strength is maintained for a long time, and the durability is dramatically improved.

As explained above, this embodiment has the following advantages because it has the above configuration.
In the mat with stair concrete blocks of the embodiment, the height of the stairs can be lowered, the area of the stepping stone part 22 of the stair block 2 can be widened, the weight of the mat as a whole can be reduced, and transportation and construction can be facilitated. In addition, the mat with flexible staircase concrete blocks can be easily handled as a whole .
In addition, since the height (H1) of the front wall 31 of the interstitial stone 3 from the mat 1 and the height (h2) of the rear wall 221 of the horizontal stepping stone portion 22 on the upper wall of the stair block 2 are the same, The area of the plane of the part can be widened, and it is possible to descend to the surface of the water more safely.
Furthermore, when one or more interlocking stones 3 are provided in the longitudinal direction, the mat 1 has more folds than the conventional block mat, which makes the mat 1 more flexible in the vertical and horizontal directions. , making construction easier .
In addition, as shown in Figs. 3 and 5, a laterally protruding guide portion is provided on the side wall of any of the stair blocks to maintain the gap between the joints. The joint between them can be easily provided with a constant interval by the guide part.
Furthermore, the number of joints, which are gaps between the joints of the stair blocks, the corners, and the corners of the interstitial stones, increases, and together with the stepping stones having a imitation stone pattern, any part of the gaps can be hidden from the outside without being conspicuous. It is possible to stop the descent of the staircase concrete block by driving an anchor pin into the mat at the point .
It goes without saying that the present invention is not limited to the above-described embodiments as long as they do not impair the characteristics of the present invention.

A, B, C... gripped portion, D... joint portion, E... embankment,
F... river, G... base (bank protection), X... block assembly,
1... mat, 12... mat base cloth roll,
2... Stair block,
21 bottom wall, 22 stepping stone portion (top wall), 221 rear wall,
23 Front wall 231 Lower end wall 24 Side wall
25... Guide part,
3, 3a, 3b... interstices, 31... front wall, 32... rear wall, 33... upper surface part,
34 bottom wall,
4 Anchor pin 41 Gate-shaped anchor pin 42 Nail-shaped anchor pin
5 Formwork 51 Outer frame 52 Block formwork 521 Bottom part of formwork
53... Foundation frame, 56... Guided portion, 57a, b... Fork insertion member,
58 bottom surface,
6... Forklift 61a, b... Fork 62a, b... Gripper 7... Mixed adhesive 71... Spray gun
h1... the height of the front wall of the stair block 2,
h2... Height of the back wall of the stair block 2 H1... Height of the front wall of the interstitial stone H2... Height of the back wall of the interstitial stone y... Width of the interstitial stone 3 in the horizontal direction, y1.2・・Horizontal (left and right) width,
x: Width (longitudinal) in the vertical (back and forth) direction of the interlocking stone 3,

Claims (3)

A mat with staircase concrete blocks in which stair blocks having a triangular cross-section are arranged vertically on the mat, and a vertical front wall, horizontal stepping stones and a back wall are formed when the stair blocks are installed,
Between the front wall and the rear wall of the vertically adjacent stair blocks, interposed stones having a horizontally elongated rectangular cross section and a predetermined width are arranged;
making the height (H1) of the inter-stone from the mat on the front wall side equal to the height (h2) of the back wall of the stair block,
The interlocking stones having a rectangular cross section and a predetermined width, which are elongated in the horizontal direction, are arranged in two or more in the lengthwise direction of the stair block, and the width of the stair block as a whole is the same as the width in the left and right direction of the stair block. A mat with staircase concrete blocks, characterized in that protruding guide parts are provided on the side walls of the blocks for maintaining joint intervals . The height (H1) from the mat of the front wall of the lower end of the interlocking stone and the height (h2) of the rear wall of the stepping stone portion of the stair block are made equal to 1 to 2 cm, and the substantial top wall is 2. The mat with stair concrete blocks according to claim 1, wherein the planar area of the stepping stone portion is widened. A quasi-stone pattern is applied to the front wall and the stepping stone portion of the stair block, and an anchor pin is driven into the mat in the gap between the joint portion of the corner portion of the stair block and the corner portion of the interposing stone to form the stair block and the interposing stone. 3. A mat with stair concrete blocks according to claim 1 or 2 , characterized in that it stops descent .

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