JPS59228530A - Slope protection work - Google Patents

Abstract

PURPOSE:To simply build up a slope frame having draining property according to geographical features by a method in which a formwork for slope frame is formed of a set of two long water-permeable materials, the formwork is set on sloped ground, and concrete is placed into the space between the water-permeable materials. CONSTITUTION:Long water-permeable materials 1, each of which is formed of an assemblage of many fibrous materials, are set in a set of two materials 1 at a given interval in parallel on a slope 2. A set of two water-permeable materials 1 are laid at a given interval in parallel crossingly to the materials 1 already laid to build up a formwork for a slope frame. Concrete 4 is then placed into the space between the water-permeable materials 1 to form a slope frame. The slope frame can thus be constructed according to geographic features without the use of custom-made formwork, and its draining property can be improved.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a slope protection method for the purpose of reinforcing and protecting slopes that are prone to collapse, such as mountains and cut slopes.

In recent years, with the progress of building land and road development in mountainous areas, hilly areas, etc., slopes that are at risk of collapse are forming in various places. If these slopes are not completely civilized, they will collapse and cause serious disasters, so effective slope protection methods are desired in many areas.

Traditionally, this slope protection work has been carried out using various methods depending on the topography and geology of the site or the local climate, but the conventional method is to lay a ready-made concrete frame on the slope. The most common method was to build a legal framework by pouring concrete or pouring concrete on-site. These methods have no particular problems when the slope is relatively gentle and the altitude is low and there are no undulations on the slope, but since the situation of the slope varies depending on the site, the following methods are recommended. It often causes great difficulties.

In other words, with the method of laying a ready-made concrete frame as described above, if the slope is extremely undulating, it is necessary to level the ground before construction, and if the slope is still steep or high, the weight Construction was extremely difficult as large concrete frames had to be transported and laid down.

In fact, instead of a concrete frame, a method of laying a frame made of metal such as steel has been used, but in this case too, construction cannot be carried out unless the undulations of the slope are leveled, which requires a great deal of labor and expense. It was necessary. In addition, when using ready-made frames such as concrete frames or metal frames, it is difficult to firmly attach the legal frame to the ground, and gaps may be created between the legal frame and the ground. was there.

On the other hand, the construction method of forming a slope frame during concrete pouring on site requires the installation of formwork for concrete pouring, so in addition to the assembly and installation of the formwork and the reinforcement work, It was also necessary to remove and remove the frame, which required a great deal of time, effort, and cost. Moreover, in this case as well, the undulations of the slope had to be leveled to some extent before the formwork was installed.

Furthermore, the slopes formed by the various construction methods mentioned above have no water permeability, so drainage of the slope surface divided by the slopes is poor, and rainwater permeates below the ground surface, weakening the strength of the slope. There is.

The purpose of the present invention is to eliminate the drawbacks of the conventional construction methods as described above, and to avoid complicated construction methods, to construct slope protection works in a simple and economical manner, and to ensure sufficient drainage of slope surfaces. This was done with the aim of providing a slope protection method that can maintain complete slope strength. In other words, the slope protection method of the present invention involves laying a set of two long water-permeable materials, which are formed by collectively molding a large number of fibrous bodies into a desired cross-sectional shape, on a slope approximately parallel to each other at a required interval. , combining the permeable materials laid in sets of two into the required frame shape depending on the situation of the slope, and pouring concrete between each of the two permeable materials to form a slope frame. The gist is: Hereinafter, the details of the configuration of the present invention will be explained based on the drawings.

Figure 1 is a plan view of the slope constructed using the method of the present invention, Figure 2
The figure is a sectional view taken along line A-A in figure 1, and figure 3 is a cross-sectional view taken along line 4-B in figure 3.
FIG.

1 in the figure is a long water-permeable material made by gathering a large number of fibers into a desired cross-sectional shape, and as shown in the figure, two pieces 1
They are laid as a set on the slope 2 approximately parallel to each other at required intervals. FIG. 4 is a partial perspective view showing a long water-permeable material 1, in which a large number of fibrous bodies 3 made of chemical fibers such as vinylon or natural fibers such as coconut fibers are made of synthetic resin etc. so as to maintain appropriate voids. It is bonded with a binding material and formed into a long shape having a desired cross-sectional shape, such as a rectangle. This water-permeable material 1 is laid on the slope as a set of two as described above.
The water-permeable material 1 formed of the fibrous body 3 is: 5- lightweight and flexible; therefore, even if the slope has undulations, it can be laid along the undulations.

In addition, in this installation, it is preferable to fix the water-permeable material 1 to the slope ground using means such as anchor bolts.

The permeable materials 1, which are laid in sets of two on the slope, are laid by combining and connecting a plurality of sets according to the required shape of the slope. Figure 1 shows them combined in a rectangular lattice shape, but depending on the situation on the slope, they can be laid diagonally or in a curved manner to form trapezoids, rhombuses, or other arbitrary shapes. It is also possible.

Next, concrete 4 is placed between each of the two water-permeable materials 1 laid on the slope as described above to form a slope frame. In this case, since the permeable material 1 serves as a formwork for the concrete 4, there is no need to provide a separate formwork. It is preferable to install reinforcing materials such as reinforcing bars or iron wires between the permeable materials 2 before pouring the concrete 4, since this will result in a strong concrete 1/sill frame incorporating these reinforcing materials. Hidden.

6- After the concrete framework is formed, as mentioned above, the permeable material 1 that has served as the formwork is not removed like normal formwork, but is left in place. . Therefore,
Since rainwater on the slope is drained through the permeable material 1, the strength of the slope will not be damaged by infiltration below the ground surface.

Prior to laying the permeable material 1, the laying part and concrete IJ
-1-4 If a groove is provided on the slope surface of the lower surface of the pouring,
Needless to say, the fixation on the slope is improved.

After forming the slope as described above, vegetation is applied to the part of the slope 2 surrounded by the slope by spraying mud mixed with plant seeds as necessary, but in this case, the core area is It is preferable to install a net-like body such as a wire net or a synthetic resin net in order to protect the slope and to ensure complete colonization of vegetation. Moreover, it is also possible to previously stretch the net-like body over the entire slope surface 2 before forming the slope frame.

The slope protection method of the present invention is constructed as described above, and has a very remarkable effect of overcoming the drawbacks of the conventional methods as described above.

In other words, in the construction method of the present invention, as described above, concrete is poured using the lightweight water-permeable material 1 in place of the concrete formwork, so construction can be easily carried out no matter how steep the slope 2 is and how high the slope height is. , the construction period is short and the construction cost is low. The permeable material 1 is flexible and flexible, so it can be laid so that it blends in with other slopes, no matter what shape the slope has. There is no possibility that this will occur. Furthermore, since the slope surface is sufficiently drained through the water-permeable material 1, it is possible to prevent the slope surface from collapsing due to rainwater seepage after the slope frame is formed. Furthermore, by using net construction (lasue), vegetation work, etc. as mentioned above,
It is possible to obtain a slope that is aesthetically pleasing and stable and firm.

As described above, the present invention does not require the use of ready-made slope frames or formwork unlike conventional construction methods, and can easily form highly reliable slope frames according to the topography, and also has good drainage. We were able to provide an extremely superior construction method that yields a sloped surface.

[Brief explanation of the drawing]

Fig. 1 is a plan view of one embodiment of a slope constructed by the method of the present invention, Fig. 2 is a sectional view taken along line AA in Fig. 1, Fig. 3 is a sectional view taken along line BB in Fig. 4, and Fig. 4. 1 is a partial perspective view showing an example of a water-permeable material used in the construction method of the present invention. 1... Water permeable material 2... Slope 3... Fibrous body 4... Concrete patent applicant Midori Bussan Co., Ltd. = 9- Figure 1

Claims (6)

[Claims] (1) A set of two long water-permeable materials made by collectively molding a large number of fibrous bodies into a desired cross-sectional shape is laid on a slope approximately parallel to each other at a required interval. Multiple sets of permeable materials to be laid are combined into the required frame shape depending on the situation of the slope, and each of the two
A slope protection method characterized by pouring concrete between permeable materials to form a slope frame. (2) The slope protection method according to claim 1, in which the long water-permeable material is fixed to the slope ground using anchor bolts. (3) The slope protection method according to claim 1 or 2, in which concrete is poured with reinforcing materials such as reinforcing bars or wires inside. (4) A slope characterized by constructing the construction method according to claim 1, 2, or 3 on a slope on which a net-like body such as a wire mesh or a synthetic resin net is stretched in advance. Protection method. (5) After the slope is formed, a net-like body such as a wire mesh or a synthetic resin net is stretched over the slope surrounded by the slope.
The slope protection method described in Section 2, Section 3. (6) The slope protection method according to any one of claims 1 to 5, wherein after the slope is formed, vegetation is applied to the slope surrounded by the slope.