KR20100028438A - Method of preventing a flood and establishing a neighborhood-living-ground - Google Patents

Abstract

The present invention relates to a method of preventing river flooding and securing neighborhood living sites through river dredging and bridge construction, and by dredging river bottoms and coriander sites (river dredging) to expand the flow cross-sectional area, and the plurality of the coriander sites prior to river dredging. A pier is installed by driving a pile, and a slab is placed on the top of the pier to construct a bridge, and a neighborhood living site is formed on the bridge.

Description

Method of preventing a flood and establishing a neighborhood-living-ground} through river dredging and bridge construction

The present invention relates to a river flood prevention and neighborhood living site securing method through river dredging and bridge construction, more specifically, to prepare for flood prevention by removing dredging river bed as well as riverbed site to secure the flow cross-sectional area, removal The present invention relates to a method for securing a neighborhood living site by constructing a bridge in place of a codified site.

In Korea, the average annual rainfall is about 1200mm to 1400mm, which is a relatively large amount, and most rainfall is concentrated for about 4 months from mid-June to mid-October. In recent years, unexpected heavy rains have occurred frequently in the central region.

As mentioned above, the rainy season is confined for about four months, and in other periods, it is maintained at about eight months or more at the water level corresponding to the low water level, and in most other rivers, both rivers are stuck on both sides. It is used to form a parking lot.

However, due to the heavy rains occurring frequently in the rainy season and the central region recently, flood damages to life and property are gradually increasing. Also, rivers are not enough to store rainwater, and most of them are discharged to the seas. The situation is falling.

As the mountain of Korea corresponds to the old age, the rainwater flowing in rainy weather is strong and the facilities are weak in all directions, so the sedimentation of earth and sand caused by rainwater is severe. It is easily deposited and the bottom of the river is rising.

Therefore, in order to solve these problems, it is necessary to secure the flow cross-sectional area of the river as much as possible. Conventionally, a method of stacking a bank of rivers higher is used. However, building a higher levee has a limitation because it has to be carried out over the entire line along the river, and there is a problem in that the levee should be continuously stacked.

It is an object of the present invention to provide a method for securing a flowing cross-sectional area and securing a neighborhood living site by a method other than a method of stacking a levee.

The river overflow prevention and neighborhood living site securing method through the river dredging and bridge construction according to the present invention, but dredging the river bottom and coriander site (river dredging) to increase the flow cross-sectional area, a plurality of files in the coriander site before river dredging A bridge is installed by piercing a piling and a slab is placed on the top of the pier to build a bridge to form a neighborhood living site on the bridge.

The present invention can prevent flood damage around the river through the dredging river, and can increase the fresh water storage effect of the river. In addition, the present invention provides an effect that can be constructed in the form of a bridge, and continue to secure the neighborhood living site in place of the coriander site to be removed by bed dredging.

Hereinafter, with reference to the accompanying drawings will be described in detail with respect to the river overflow prevention and neighborhood living site securing method through river dredging and bridge construction according to a preferred embodiment of the present invention.

FIG. 1 shows a cross section of a flowing river to be dredged in a riverbed, and FIG. 2 shows a cross section of a flowing river after being dredged and a bridge is built.

Referring to FIG. 1, the river bottom of the flowing river (hereinafter, referred to as 'river'), particularly, the river bottom on the downstream side is somewhat higher than the original river bottom 11 due to the deposition of soil and the like (12 ). As the bottom of the river rises, the flow cross-sectional area decreases accordingly. Therefore, if the flow rate rapidly increases due to intensive rainfall, the river may overflow.

Therefore, in order to prevent the flooding of the river, the flow cross-sectional area should be enlarged. In order to enlarge the flow cross-sectional area of the river, there has been a method of stacking the dike 15 higher as in the related art, but as described above, the dike must be increased over the entire section of the river, which has its limitations. Considering the aspects, it is very inefficient.

Therefore, in the present invention, as shown in Figure 1, in order to enlarge the flow cross-sectional area of the river is dredged river bed.

In the present invention, the range 14 of the bed dredging is extended to the coriander site 13 as well as the portion where sediments and the like are accumulated. Through this, it is possible to secure a wide range of flowing cross-sectional areas, rather than to secure a limited cross-sectional flow area obtained as a result of the dredging that is generally performed.

If the bottom of the stream becomes the same or lower than the height of the jinja or farmland 16 around the stream after dredging the river, fresh water can easily flow from the jinja or farmland 16 into the stream. It is preferable to dredge deeper than the height of the deformer etc. (16). To this end, it can dredge deeper than the original river bottom 11.

Soil collected by bed dredging can be recycled to landfill. In addition, the soil collected by bed dredging is free of salt, so it is suitable for use as asphalt and concrete aggregate. Therefore, it can be used as aggregate necessary for the construction of a bridge or a neighborhood living site to be described later.

Dredging removes the citron site 13 used as a neighborhood living site such as a parking lot or a park. Accordingly, it is necessary to secure another neighboring living site that can replace the coriander site (13), which is to build a bridge form (hereinafter referred to as 'bridge') before dredging the riverbed, and to act as a coriander site to be removed. This can be achieved by creating a neighborhood living site on the constructed bridge.

There are many ways to build a bridge, but as can be seen in the form of the bridge shown in FIG. 2, a plurality of piles (Pile, 21) in one or two or more rows of the coriander site (13) A bridge may be constructed by installing a piers 23 to support the slabs 25 by placing them, and placing slabs 25 on top of the installed piers 23.

In the present invention, the reason why the plurality of piles 21 are driven to the coriander site 13 when the bridge is constructed is to drive the piles to the part where it is flown to drive the piles to the coriander site 13 having relatively less water. This is because it is advantageous in many ways in terms of ease of driving.

The height of the slab 23 can be arbitrarily set by adjusting the depth of the pile 21, the length of the bridge 23, etc., which are driven during the bridge design. However, when the slab 25 is designed to be located at a very low height, there is a problem that the neighborhood living site may be locked because the water level is rapidly increased in a short time during the heavy rain.

Therefore, the height of the slab 25 is at least 1.0m higher than the planned flood level 17 after dredging the riverbed so that the neighboring living site formed on the bridge does not worry about being submerged even when the river level becomes very high due to rainy season or heavy rainfall. It is desirable to position.

The relative coefficient of the ability of rainwater to flow out of the area is called the runoff coefficient. A runoff coefficient of "0" means no runoff flows, and a runoff coefficient of "1" means that the runoff is completely It means to flow out. In other words, if the drainage capacity is good, the runoff coefficient may be relatively high.

Table 1 shows the basic runoff coefficients by type of work.

TABLE 1

Work Basic runoff coefficient Work Basic runoff coefficient road 0.85 A public building 0.75 Commercial land 0.80 Religious paper 0.75 Neighborhood Living Facilities 0.80 Children park 0.45 House 0.80 school 0.40 Apartment 0.65 Neighborhood park 0.30

Referring to Table 1, in general, in the case of concrete or asphalt paved road, the runoff coefficient is relatively high (about 0.8 ~ 0.85), but in the unpaved state, the runoff coefficient is relatively low (about 0.3 ~ 0.4). Therefore, it is preferable that the neighborhood living site formed on the slab 25 of the bridge is paved with concrete or asphalt so that the drainage coefficient is relatively high and the drainage capacity is good.

As described above, the river flood prevention and neighborhood living site securing method according to the present invention can increase the flow cross-sectional area of the river by the dredging river dredging range (14), so that the river flooding can be prevented, and through the bridge construction After removal of the coriander site 13, it is possible to secure a neighborhood living site that can be utilized as a parking lot, a walkway, a park, and the like.

Although the above has been described with reference to one embodiment of the present invention, various changes and modifications can be made at the level of those skilled in the art. Such changes and modifications may belong to the present invention without departing from the scope of the present invention. Therefore, the scope of the present invention will be determined by the claims described below.

1 is a cross-sectional view of a flowing river to be dredged riverbed.

2 is a cross-sectional view of the flowing river after the dredging and bridge construction.

Claims (6)

Dredging the bottom of the river and coriander site (floor dredging) to expand the flow cross-sectional area, but prior to the river dredging, a plurality of piles are driven on the coriander site to install piers and slab on top of the piers. A river overflow prevention and neighborhood living site method, comprising: building in a bridge form (hereinafter referred to as a 'bridge') in a manner of placing a bridge, and creating a neighborhood living site on the bridge. The method of claim 1, And building the bridge so that the slab is located at least 1.0m higher than the planned flood level after dredging the riverbed. The method of claim 1, A river overflow prevention and neighborhood living site method characterized by dredging the riverbed so that the bottom of the river is the same or lower than the height of the surrounding land or agricultural land. The method of claim 1, A river overflow prevention and neighborhood living site securing method comprising using the soil collected by river dredging as aggregate required for the bridge construction. The method of claim 1, River flood prevention and neighborhood living site, characterized in that for paving the neighborhood living site with concrete or asphalt. The method of claim 5, A flood overflow prevention and neighborhood living site securing method, characterized in that the soil collected by dredging the river bed as aggregate required for the production of concrete or asphalt.

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