KR100645332B1 - Multiple rice straw drain for improving soft ground - Google Patents

Abstract

A multiple rice straw drain for improving a soft ground is provided to dehydrate moisture from the soft ground by integrally connecting a rice straw rope with a degradable assembling band and integrally combining the assembling band with non-woven fabric, and to prevent environmental pollution by making the rice straw drain of degradable plastic. Rice straw ropes(11) are horizontally arranged and formed by twisting rice straw(21), and surrounded by non-woven fabric(18) to form a multiple rice straw drain(10). Plural support plates(13) are installed in an assembling band(12a), and an assembling hole(16) and an assembling unit(15) are integrally formed at both ends of the assembling band to connect and fasten plural rice straw ropes. The assembling band, the rice straw rope and the non-woven fabric are made of degradable plastic, and a molten bonding part is formed between the assembling band the non-woven fabric to integrally fix the rice straw rope, the assembling band and the non-woven fabric. A fitting sill(14) and a wedged cut portion(17) are formed in the assembling unit, and the assembling hole is expanded outward. The assembling band and the non-woven fabric are made of biodegradable plastics.

Description

Multiple rice straw drain for improving soft ground}

1 is a partial cutaway perspective view showing the overall structure in a representative embodiment of the multi-straw straw for soft ground improvement according to the present invention,

Figure 2 is a cross-sectional view along the line C-C of FIG.

3 is a cross-sectional view along the line A-A of FIG.

4 is a cross-sectional view along the line B-B of FIG.

5 is a cross-sectional view along the line D-D of FIG. 2;

Figure 6 is a partially cut perspective view showing the overall structure in another embodiment of a soft rice straw drain for soft ground improvement according to the present invention,

7 is a cross-sectional view along the line E-E of FIG. 6,

Figure 8 is a perspective view showing a state when installing the construction of soft straw straw for soft ground improvement according to the invention on the soft ground,

Figure 9 is a cross-sectional view of the completed state by applying the soft ground to the multi-straw straw drain for soft ground improvement according to the present invention,

10 is a cross-sectional view showing the structure of a conventional multi-straw straw.

※ Explanation of symbols for main parts of drawing

10: multi straw straw 11: straw straw rope

12a, 12b: fastening band 13: support plate

14: hanging jaw 15: fastener

16: coupling hole 17: wedge-shaped incision

18 nonwoven fabric 19 melt joint

20: wavy bend 21: straw

X: Soft ground Y: Vertical drain

Z: Horizontal Drain

The present invention relates to a multi-straw straw drainage for soft ground improvement, more specifically, in order to optimally dewater water contained in the ground such as marshes, interstitial lands, dredged landfills, which contain a lot of moisture, and high environmentally friendly soils. This is for the multi-straw straw for the improvement of soft ground, which is free from contamination, can be continuously dehydrated without deformation, and is easy to construct.

Unlike general synthetic resin drains, which have been commonly applied to promote the dehydration of soft clay, clay, straw, straw, waste wood, waste cloth, etc. have recently been made with low cost and eco-friendly drainage and construction using them. Method is being developed.

As a representative example, Patent Application Publication No. 10-0246206, filed March 15, 2000, filed by the applicant of the present application, describes a "wick core for promoting dehydration of a soft clay soft ground". Disclosed is a drainage wick formed by filling a straw bundle inside a plurality of foam-shaped overlapping portions. This drainage wick is environmentally friendly, inexpensive material cost, and can be selectively used according to the location conditions of the installation site, but it was cumbersome to manufacture the nonwoven fabric, and the installation work was inconvenient.

In addition, the patent application No. 10-0428963 (registration date: April 13, 2004), which is the applicant's prior application, discloses the "dewatering heart drain for soft grounds based on straw bundles". In the periphery where the straw strands are twisted to form straw strings, the straw strands are rolled up or twisted with a waste textile core or a waste cotton core as the inner cores of several straw strands. It is a single core drain having a structure that is rolled up and coated around and coated with an environmentally friendly nonwoven fabric. However, this core drain was good in terms of robustness, but it was cumbersome to manufacture, and the installation work was very cumbersome, and the construction period was long because each individual core drain had to be carried out separately.

Utility Model Registration No. 20-0354574, also filed on June 16, 2004, filed with several strands of strands twisted into a plurality of straw strands 31, as shown in FIG. 32b) 32c, 32d are arranged side by side at appropriate intervals, and then the cardboard geotextile 33 is wrapped around the front and rear circumferences, and each of the several strands 32a, 32b, 32c The multi-straw straw wick drain 30 in which several strands 32a, 32b, 32c, and 32d are integrally formed by the stitching line 35 formed by enclosing the geotextile 33 between 32d. ) Is introduced. The multi-straw straw wick drain 30 of this structure is eco-friendly because of the use of straw, but the production cost was high due to the hassle of having to enclose between each strand of each strand 32a, 32b, 32c, 32d. Since the dehydration space in the longitudinal direction is ignored at the time of installation, there is a drawback that the dehydration conversion area is small and the dehydration effect is insufficient.

Thus, straw straw for improvement of soft ground using conventional rice straw was covered with nonwoven fabric and was enclosed and fixed so that manufacturing was cumbersome and costly, and nonwoven or geotextile surrounding the drain has been applied until now. It was woven by mixing synthetic yarn in the coconut shell, and the degrading power by microorganisms in the soil or water was weak, and the soil was contaminated when landfilled.

The present inventors have been working in the art for many years, and have intensively researched to solve the above-mentioned shortcomings in the conventional straw straw drain, and as a result, the present invention has been proposed.

That is, the object of the present invention is to provide a multi-straw straw drainage, which is easy to purchase materials, easy to manufacture and construct with a simple structure, and no environmental pollution, and made of several strands of straw cords produced by twisting a straw straw that can be easily purchased after rice farming. Using the main material, these straw straw cords are laid side by side in a state where side-by-side speeches are formed in a decomposable connection structure of specially constructed specially constructed decomposing connecting means, and non-woven fabric surrounding the periphery is made of degradable eco-friendly material to form multiple straw straws. By constructing, it is easy to purchase materials and simple manufacturing, and it is easy to install and install.In the above, there is no environmental damage due to soil pollution during installation and it is possible to firmly connect more than 5 rice straw cords. Passage space formed in the direction of the diameter and the longitudinal direction By increasing the dehydration conversion area due to wealth, multiple rice straw drains have been developed that can greatly increase the dehydration effect inside the soft ground.

In the multi-straw straw for soft ground improvement according to the present invention, in the multi-straw straw which combines the straw straw ropes formed by twisting a plurality of straw straws side by side and wraps the circumference with a nonwoven fabric,

The several strands of rice straw cords are provided with several partition support plates, each of which is individually inserted into the inner part of the straw straw cords, and a coupling hole is provided at one end thereof, and the other end thereof is inserted into the coupling hole. By means of a band-shaped fastening band which is respectively provided integrally fixed fasteners, the connection is fixed in a plurality in the longitudinal direction at appropriate intervals;

The fastening band, several strands of straw rope and a nonwoven fabric surrounding the fastening band are each made of degradable plastics;

By forming a melt joint in a predetermined portion where the fastening band and the non-woven fabric contact each other, each of the rice straw rope, the fastening band and the non-woven fabric is characterized in that it is integrally fixed in a single bundle firmly.

In addition, according to the present invention, the fastening band may be formed in the shape of a band having a rounded curved portion of the wave (wave-shaped) so that each of the straw straw cords can be inserted and supported individually according to the appearance and number of strands of straw strands. have.

The fastening band is excellent in strength and elasticity during use for construction, so it can reliably support a multi-linked rice straw cord, and after construction, it can be decomposed into water and carbon dioxide to completely solve soil pollution (degradable plastic) It is more preferable in the case of biodegradable plastics, which is decomposed by the action of natural microorganisms such as bacteria and fungi.

As known biodegradable plastics, microorganisms utilizing natural polymers and biopolymers produced by microorganisms using chitin of animal shells such as starch, cellulose and soybeans, and animal shells such as shrimp and crab. Synthetic systems include those obtained from chemical synthesis systems prepared to be completely biodegradable in the natural environment by replacing aliphatic polyesters with hydrocarbons in the molecular structure of aromatic polyesters, and all of them are applicable in the present invention.

As an example, biodegradable plastics prepared from these include polyhydroxyalkanoate {PHA: polyhydroxyalkanoate}, polyhydroxybutyrate {PHB:

polyhydroxybutyrate}, polyglycolic acid {PGA: poly (glycolic acid)}, polycaprolactone {PCL: polycaprolactone}, polybutyrene succinate {PBS: polybutylene succinate}, polylactic acid {PLA: polylactic acid} and the like. .

In the present invention, the nonwoven fabric surrounding the fastening band and the multi-straw straw cord may also be the same biodegradable material as the fastening band, and in particular, the aliphatic polyester resin disclosed in Japanese Patent Application Laid-open No. H7-188532 is a matrix resin and poly It is made of a composition to which a vinyl alcohol additive is added or made of a polymer obtained by the direct condensation reaction of polyhydric alcohols and polybasic acids disclosed in Japanese Patent Application Laid-open No. Hei 7-189098. It is more preferable because it is excellent in physical properties such as impact properties and can be completely decomposed like paper or wood when embedded in soil.

The fastening hole provided at one end of the band-shaped fastening band forms a locking jaw and a wedge-shaped cutout, and the coupling hole provided at the other end has an inclined structure such that the size of the hole gradually increases from the inside to the outside. Since the binding hole is easily inserted into the coupling hole and once inserted, the wedge-shaped cutout is expanded so that the locking jaw is caught by the end of the fastening band so that the binding hole and the coupling hole can be firmly clamped to each other. have.

Hereinafter, with reference to the accompanying drawings to more easily understand the characteristics of the multi-straw straw for soft ground improvement according to the present invention will be described in detail.

1 to 5 illustrate a representative specific example of the multi-straw straw for soft ground improvement 10 according to the present invention.

As well shown in Figure 1, soft straw improvement for the multi-straw straw 10 according to the present invention, a number of straw straw ropes (11) formed by twisting a plurality of straw straws 21, that is, five strands or more Side-by-side side-by-side speech, tied at a proper interval in the longitudinal direction of the number of strands of straw straw rope 11, made of degradable material and tied by a fastening band (12a) made of a separate band-shaped structure, and fixed The nonwoven fabric 18 is provided with a fusion spliced portion 19 formed by heating the inner portion of the nonwoven fabric 18 in contact with the fastening band 12a while being surrounded by a nonwoven fabric 18 made of a decomposable substance as a whole. And the fastening band 12a, and several straw cords 11 are integrally formed and bundled together.

The fastening band 12a shown in Figure 1 is made of a band shape, the inner surface of the central portion of the partition support plate 13 is formed in accordance with the number of straw straw cords 11 are connected in multiple, At one end thereof, as shown in FIG. 4, the coupling hole 16 extends in diameter from the inside to the outside thereof, and the other end thereof has a locking jaw (as shown in FIG. 3). 14) and a fastener 15 which forms a wedge-shaped cutout 17, and these partition support plates 13, coupling holes 16 and fasteners 15 are provided with the fastening band 12a. It can be formed at a time by integral molding together with the body of the.

Therefore, as shown in FIGS. 1 and 2, the support plate 13 of the fastening band 12a is sandwiched between a few strands of the straw straw cord 11, and the entire circumference of the straw cord 11 with the fastening band 12a. After enclosing and inserting the fastener 15 provided at one end thereof into the coupling hole 16 provided at the other end, as shown in FIG. 5, the wedge-shaped incision of the fastener 15 is shown. Since the engaging jaw 14 is caught by the end of the fastening band 12a while the part 17 is expanded, the binding hole 15 and the coupling hole 16 are firmly attached to each other so that they cannot be separated from each other.

According to the multi-straw straw straw 10 for soft ground improvement according to the present invention of this structure, it is possible to completely decompose when reclaimed at appropriate intervals in the longitudinal direction in the state in which several straw straw cords 11 are laterally side by side Bundled with a fastening band 12a made of decomposable plastic, the rice straw cord 11 is connected and fixed in multiple numbers, and is surrounded by a decomposable nonwoven fabric 18 as a whole, and the fastening band 12a and the decomposable nonwoven fabric 18 are fixed. By heat-treating a predetermined portion to be bonded to the layer provided with a fusion splicing portion 19, the multi-straw straw is fixed to the fastening band (12a) and the degradable non-woven fabric 18 is fixed to the bundle of several straw straw cords (11) The production of the drain 10 is completed, and the resulting multi-ply straw drain 10 has several strands of straw cords 11, the fastening band 12 and the decomposable nonwoven fabric 18 being firmly supported and fixed. The.

Therefore, according to the present invention, even if the number of straw straw cords 11 is connected in multiple or more than 5 strands, it is possible to integrally firmly fix and support them, so that the water passage space portion formed in the lengthwise direction of the environmental water passage diameter (a) on the plane (h) can be greatly enlarged, and thus, it is possible to manufacture a multi-straw straw drain 10 having a large dehydration conversion area.

As shown in FIGS. 8 and 9, the multi-straw straw drainage 10 for soft ground improvement according to the present invention having such a structure is deep as a vertical drain Y in the ground of the soft ground X, and the soft ground (X). The upper part of the) is installed in such a way that the horizontal drain (Z) is installed while the drainage layer (L) is laminated and then the fill layer (M) is laminated and installed, and the moisture contained in the soft ground (X) is The vertical drain (Y) and the horizontal drain (Z) is discharged along the drainage path (N) by the dehydration action of the multi-straw straw 10 of the present invention, the multi-straw straw 10 of the present invention is a few straw straw Dong-A rope (11), fastening band (12a) and non-woven fabric 18 is integrally and firmly configured to be able to improve the soft ground by continuously dehydrating the moisture of the soft ground (X) without deformation, and straw straw rope Firmly gibberize in multiples of 5 or more strands It is in can be further enhance the dewatering effect.

In addition, the fastening band 12b of the multiple straw straw drain 10 for soft ground improvement according to the present invention, as shown in Figure 6 and 7, each straw straw rope according to the appearance of several straw straw cords (11) It may be formed in the shape of a band having a rounded curved portion 20 of the wave (wave shape) so as to be inserted and supported separately.

That is, the band-shaped fastening band 12b having the rounded curved portion 20 shown in FIGS. 6 and 7 is made of degradable plastic of the same material as the fastening band 12a shown in FIGS. 1 to 5. , The bent portion 20 of the corrugation corresponding to the number of strands of the straw straw 11 is integrally formed. In addition, one end is provided with a coupling hole 16 extending in diameter from the inside toward the outside, and the other end corresponding to the engaging jaw 14 and the wedge-shaped cutout 17 is formed. The binding opening 15 is integrally provided (refer FIG. 2 and FIG. 3).

6 and 7, the band-shaped fastening bands 12b shown in FIG. 6 and the number of straw straw cords 11, ie, five or more strands, which are formed by twisting a plurality of straw straws, are laterally side-by-side, and The straw straw cord 11 is wrapped around the outside of the straw cord 11 so as to be separately inserted into and supported in the corrugated bend 20, thereby coupling the coupling hole 16 and the binding port 15 at both ends thereof. When the wedge-shaped cutout 17 of the fastener 15 is expanded in a manner as shown in FIG. 5, the locking jaw 14 is caught by the end of the fastening band 12 so that it cannot be separated firmly. It is bound, and can be connected simply fixed integrally the number of straw straw rope 11 strands transversely. In this way, the straw strands 11 of the several strands are bundled together by the fastening bands 12b, which are separately manufactured at appropriate intervals in the longitudinal direction of the several strands of the straw strands 11, which are laterally laterally spoken. The non-woven fabric is fixed and covered with a nonwoven fabric 18 made of a decomposable substance as a whole, and a predetermined portion of the inner portion of the nonwoven fabric 18 in contact with the fastening band 12b is heated to provide a molten joint 19. 18 and the fastening band (12b), and further several straw straw ropes 11 are integrally fixed, so that the multiple straw straws 10 according to the present invention are firmly formed.

The fastening band 12b shown in FIGS. 6 and 7 is also installed in the ground and the surface of the soft ground X by the horizontal drain Z and the vertical drain Y in the same manner as in FIGS. 8 and 9, respectively. 1 to 2 may have the same physical properties as those of the fastening band 12a shown in FIGS. 1 and 2, and the same dehydration may be continuously performed without being deformed.

Multi-straw straw for soft ground improvement according to the present invention as described above is degradable fastening at appropriate intervals in the longitudinal direction in the state in which the straw straw ropes made by twisting the straw straw can be easily purchased after rice farming in parallel More strands in one drain by tying bands of rice straw strands together easily and integrally, and at the same time, integrally melt-bonding the fastening band and the nonwoven fabric while enclosing the decomposable nonwoven fabric around the band. The straw straw cord can be connected and fixed, and the number of straw straw cords can be firmly fixed together with the fastening band and the nonwoven fabric. Dehydration effect of moisture contained in soft ground during installation Can greatly increase.

In addition, the multi-straw straw for soft ground improvement according to the present invention is not only low cost of material purchase, but also easy to manufacture, and also made of straw straw rope and the fastening band for connecting and fixing them in multiple, and the non-woven fabric surrounding them is made of degradable plastic. Therefore, when it is buried in the ground after construction, it is naturally decomposed by microorganisms in the soil and thus does not cause soil pollution or environmental destruction.

Claims (4)

In the multi-straw straw 10, which is composed of a plurality of straw straws twisted together, which is formed by twisting the straw straw rows 11 side by side and surrounded by a non-woven fabric 18 around them. The straw strands 11 of the several strands are provided with a partition support plate 13 at the center of the inner surface thereof, and a coupling hole 16 is provided at one end thereof, and the coupling hole 16 is provided at the other end thereof. A plurality of fasteners (15) inserted into and fixed to each other) by a band-shaped fastening band (12a), each of which is integrally provided, and is connected and fixed in multiples at appropriate intervals in the longitudinal direction; The fastening band (12a), several strands of straw rope (11) and the nonwoven fabric (18) surrounding the fastening band (12a) are each made of degradable plastic; Melting joints 19 are respectively formed at predetermined portions where the fastening band 12a and the nonwoven fabric 18 are in contact with each other, so that each of the straw straw cords 11, the fastening band 12a, and the nonwoven fabric 18 are respectively formed. Multi-straw straw for soft ground improvement, characterized in that is firmly fixed to each other in a single bundle. In the multi-straw straw 10, which is composed of a plurality of straw straws twisted together, which is formed by twisting the straw straw rows 11 side by side and surrounded by a non-woven fabric 18 around them. The number of straw straw cords 11 is formed of a rounded bent portion 20 having a corrugated shape so that each straw straw cord 11 can be individually inserted and supported according to the shape and number of strands of the straw strands 11. By the band-shaped fastening band (12b) is provided with a coupling hole 16 at the end and the other end corresponding to each other is provided integrally with a fastener (15) inserted into and fixed to the coupling hole 16, Fixed in multiples at appropriate intervals in the longitudinal direction; The fastening bands 12b, several strands of straw rope 11 and nonwoven fabrics 18 surrounding the fastening bands 12b are each made of degradable plastics; Melting joints 19 are respectively formed at predetermined portions at which the fastening band 12b and the nonwoven fabric 18 are in contact with each other, so that each of the straw strands 11, the fastening band 12b, and the nonwoven fabric 18 are different. Multi-straw straw for soft ground improvement, characterized in that is firmly fixed to each other in a single bundle. According to claim 1 or 2, wherein the fastener 15 is formed with a locking jaw 14 and the wedge-shaped cutout 17, the coupling hole 16 is gradually in the outward from the inside of the hole Multi-straw straw for soft ground improvement, characterized in that formed in an inclined structure that is enlarged in size. 4. The multi-straw straw for soft ground improvement according to claim 3, wherein the fastening bands (12a) (12b) and the nonwoven fabric (18) made of degradable plastics are biodegradable plastics.

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