JPS58191810A - Improvement work of soil quality - Google Patents

Abstract

PURPOSE:To effectively drain water as well as to recover pipes easily by a method in which plural pipes with water conveyance holes are set and connected in a trench, while chips of rubber, etc., are laid on the pipes, and they are covered with surface soil. CONSTITUTION:Plural pipes 3 with water conveyance holes 5 are set and connected in a trench 2 excavated in the ground to be improved, rubber or plastic chips 9 are laid in great amounts on the upside 3a side of the pipes 3, and surface soil 10 is covered on the upsides of them to bury the pipes 3. By this, water A in the ground 1 to be improved enters through the apertures between the chips 9 from the ground 11 into the water conveyance holes 5 and then flows out in a given direction on the bottoms 3b of the pipes 3. Thus, since the chips 9 prevent the blocking of the water conveyance holes 5 and apertures are formed among the chips, the draining of water can be assured for a long period of time.

Description

[Detailed description of the invention] This invention relates to a soil improvement method.

In order to convert wetlands and other areas with poor soil quality into cultivated land or pastureland, the soil quality is improved by moving the soil, which is called "subsoil modification," or by burying the appropriate pipes and using them as culvert drainage pipes to drain water. However, the former method takes a lot of time, effort, and money to replace a large area of soil, and the latter method, although it solves the problems of the former, has been adopted for some time. Because gravel is placed on the top side of the pipe and the top surface is covered with topsoil, the water guide hole installed in this pipe becomes clogged9, and over a long period of time, water does not flow properly, and the area is turned into agricultural land. In this case, there were problems such as the possibility that the blades of agricultural machinery and equipment could hit the gravel and cause damage, and that it was difficult to recover the pipes after soil improvement.

This invention was made by focusing on such conventional problems, especially the latter problem mentioned above.Even if the pipe is buried for a long period of time, the water conduction and drainage efficiency is good, and it can be easily removed when needed. The aim is to provide a soil improvement method that allows pipes to be recovered.

The details of this invention will be explained below with reference to the drawings. First, a trench 2 is excavated in a land 1 to be improved. This IF 5 requires a cross-sectional size sufficient to bury the pipe 3, and it is preferable that the groove bottom 4 has an appropriate slope so that water can be easily drained through the pipe 3. Then, a plurality of pipes 3 having a plurality of water introduction holes 5 drilled in advance are arranged in the trough 2 and connected. The pipe 3 may be a heel pipe 6 or a rubber tire 7.
An appropriate pipe 3 can be used, such as one connected to a ring-shaped object 8, or a pipe 3 connected to a ring-shaped object 8, and a plurality of water guide holes 5 are formed within an arcuate range of about 10 to 300 degrees on the wall surface. Known adhesives, sealants, caulking agents, etc. are used to connect the three parts.

Next, a large number of rubber or plastic chips 9 are laid on the upper surface 3a of the pipe 3 in place of conventional gravel.

The size of the chip 9 is at least larger than the hole diameter of the water introduction hole 5; 7. The chip 9 is laid so as to cover the upper surface 3a side of the pipe 3. Further, the upper surfaces of these chips 9 are covered with topsoil 10 and the pipes 3 are buried.

In the condition that it is buried underground, the moisture in the improvement target area 1, for example, a wetland, moisture A enters the water introduction hole 5 through the gap between the underground 11 and the tip 9). It will flow out in a predetermined direction. The chips 9 prevent the water guide hole 5 of the pipe 3 from clogging, and since a gap is always formed between the chips 9, water can be reliably guided from the underground 11 to the water guide hole 5 over a long period of time. The tip 9 is made of rubber or plastic material, which is light and does not require much load on the pipe 3, and the durability of the pipe 3 in the underground 11 is improved accordingly. In this way, the area around the pipe 3, especially the upper side, is covered with the lightweight chips 9, and only a small amount of topsoil 10 is applied as soil.

As the pipe 3, it is possible to use not only the atom pipe 6 but also pipes made of other materials, such as pipes made of other materials, such as the pipes shown in FIG. Furthermore, we decided to make use of tires as waste, cut out the bead part of the tire in its entire volume shape, sifted it out, connected the bead part as a single unit with adhesive, and formed a pipe 3 of the desired length. You may also do so. In this way, the pipe 3 can be used as a very preferable pipe 3 because the steel wire contained in the build part exhibits sufficient strength.

The water in the ground 11 is appropriately drained and drained through the pipe 3, and the wetland can be converted into a new land. For example, when a wetland is turned into cultivated land, even if agricultural machinery is used on the land, the bottom of the topsoil 10 is only covered with rubber or plastic chips 9 instead of gravel.
The blade of the e-sword tool will not be damaged.

Then, thoroughly remove the moisture in the ground 11 and moisture A, and transform it into 1
．． After improving the soil quality, scrape out the chips 9 and remove the pipe 3.
All you have to do is collect it and backfill trench 2.

As explained above, according to the soil improvement method of Jin's invention, pipes with a plurality of water guide holes formed in advance are excavated in the area to be improved, placed in a round groove and connected, and the whole pipe is In particular, since the upper surface of the pipe is covered with rubber or plastic chips and the upper surface is covered with topsoil and then buried underground, the pipe can be buried underground for a long period of time without clogging of the pipe's water inlet hole. Even if it is buried, it can be expected to have a stable flow rate and ensure moisture conduction and drainage, making it possible to improve soil quality efficiently. Furthermore, since chips are lightweight and do not put a load on the pipe like gravel, the material of the pipe is not limited to concrete Hiem pipes, but can also be made of other materials such as rubber tires, bead parts of tires as waste, etc. Since the chips are made of rubber or plastic, even if the blades of agricultural machinery and equipment hit the chips, they will not be damaged, and even if they remain in the ground for a long time, they can be easily taken out, and the soil quality This has the effect of making the work of recovering the improved pipe much easier.

[Brief explanation of the drawing]

Fig. 1 is a perspective explanatory view explaining the state of the soil improvement method according to the present invention, Fig. 2 is a sectional view taken along the arrow ■-■ line in Fig. 1, and Fig. 3 (A2. B), ()-It is a side view showing the connection state of various nodes.
・・・Groove 3・−・・・・・・・・・・・・・・・・−・
・・−・−・Pipe 5・−・・・・・・・・・・・・・・・・
・・・・・・－・・・・・・Water guide hole 9・・・・・・・・・・・・
−・・−・・・・・・・・・・Chinobu Figure 2 Figure 3

Claims (1)

[Claims] A trench is excavated in the area to be improved, multiple pipes with multiple water guide holes are placed in the trench and connected, and rubber or plastic chips are laid on the top side of the pipe in the trench. A soil improvement method characterized in that the top surface of the chip is covered with topsoil so that the pipe can be recovered and buried.