KR100492818B1 - Core plate of a drain board for solidifying a soft ground and its installation way - Google Patents

Abstract

The present invention relates to a dehydration promoting drainage of soft ground and its installation method, the purpose is to mix the inorganic non-metallic natural ceramic powder and hydrophilic binder impregnated into a non-woven fabric and then wrapped by the drainage core with a filter fabric manufactured by compression molding the drainage material It is molded and poured on the soft ground to drain the soft ground, and formed to be inclined at a predetermined angle in the direction of the drain hole of the drainage material. In providing.

The present invention for achieving the above object is a drain hole core is formed to discharge the ground water of the ground to the ground; The filter cloth is formed into a microporous structure by mixing inorganic nonmetallic natural ceramic fine powder and hydrophilic binder with a weight ratio of nonwoven fabric by 10-20% to impregnate the nonwoven fabric and compressing it at high temperature so as to surround the core to prevent inflow of soil. Is done.

The drainage core is composed of a vertical drainage core or a cylindrical drainage core, and the technical gist of the drainage core is a method for installing the drainage constituted in the ground.

Description

Core plate of a drain board for solidifying a soft ground and its installation way}

The present invention relates to a dehydration promoting drainage material and its installation method of the soft ground, and more particularly, to change the direction of the drain hole formed in the drainage core to the left and right to cope with the vertical deformation force and horizontal deformation force generated during installation on the soft ground Drainage to improve the permeability of the filter cloth by covering the filter cloth impregnated with the inorganic non-metallic natural ceramics fine powder on the drainage core, and inserting the drainage material while maintaining the flatness of the drainage material when the soft ground of the drainage material is inserted. The present invention relates to dehydration promoting drainage of soft ground and its installation method.

In general, the soft ground refers to the ground in a state where the upper structure cannot be supported, that is, whether the soft ground can support the upper structure is a relative concept depending on the magnitude of the load that the ground receives.

The soft ground is classified into soft ground if there is an excessive gap between the viscous granules and the viscous granules, and the main goal of the improvement of the soft ground is to drain the excess ground water.

In order to improve such a soft ground, a conventional drainage material wound in a circular shape is inserted into the inside of a steel pipe casing, laid vertically in the ground, and loaded with soil or water on the upper portion to promote drainage or forced drainage by partial vacuum. In order to improve the soft ground, or to install drainage pipes covered with filter cloth to drain rainwater and groundwater drainage on the back of earthwork structures in viscous soil areas, or to cover the front of backfill aggregates. Filtered pipes are also used to treat rainwater and internal leachate around groundwater and landfills.

The drainage material is composed of a drainage core having a water outlet and a filter cloth surrounding the drainage core, and prevents the passage of fine granules during drainage of excess pore water in the soft ground while impairing the function of the filter due to hole clogging for a long time. There should be no shrinkage of drains by earth pressure and good compliance with consolidation settlement, so that there is no disconnection or blockage of drainage.

Geotechnical problems on the soft ground hosted by the Asian Regional Technical Committee (ATC-7) on September 09, 2004, and the case study, "A Study on the Long-term Water Permeability of Vertically Installed Vertical Drainers". , As a result of checking the deformation state by taking the ground of the drainage poured in the ground, it can be seen that the drainage is deformed into a somewhat curved shape at intervals of 20 ~ 50cm.

In addition, Shin Eun-chul, an assistant professor of the Department of Civil and Environmental System Engineering, University of Incheon, and “Analysis of Plastic Board Drainage through Real Large-scale Model Experiments” by two people, it can be seen that the drainage is deformed at predetermined intervals.

In this way, the drainage material loses its inherent flatness due to the vertical and horizontal deformation forces of the ground, and the bending, twisting, and folding of the drainage material occurs more and more deeply, and the cross section of the drain hole of the drainage core is damaged. Drainage performance is reduced.

In addition, the drain material core of the drain material is usually formed of plastic, the drain material is produced in a package wrapped in a circular state. When such drainage material is inserted into the ground, it is poured in a bent form as shown in FIG. 2 without being placed vertically on the ground due to the bending property of the drainage core of the drainage material being wound.

In this way, when the drainage material is poured in a bent form, when the steel pipe casing is drawn out, there is a problem that the filter cloth is damaged by friction with the inner surface of the steel pipe casing and the filter cloth due to the bending of the drainage material. There is a problem of deterioration.

In addition, there is a problem in that the water gradient in the pore water is lowered as the density of the ground is increased, and the air dissolved in the ground accumulates in the bent portion of the drainage core as the consolidation proceeds, thereby lowering the water permeability.

In addition, during the installation and drawing of the steel pipe casing, due to the rapid inflow of sediment between the filter cloth and the drain core at the ground end of the drain material, the cross section of the water outlet is reduced, which reduces the function of dewatering and draining by the drain material. AOS) and permeability coefficients delay the early dewatering function to solve the disturbances caused by underground pipe casing laying and drawing, which hamper the efficiency of drainage, consolidation and settlement of soft ground.

The present invention is created in order to solve the conventional problems as described above, the object is to mix the inorganic non-metallic natural ceramic powder and hydrophilic binder impregnated in a non-woven fabric and then wrapped in a drain material core with a filter cloth manufactured by compression molding the drainage material It is molded and poured on the soft ground to drain the soft ground, and formed to be inclined at a predetermined angle in the direction of the drain hole of the drainage material. For the purpose of providing it.

The present invention for achieving the above object is a drainage core is formed to discharge the gap water in the ground to the ground; The filter cloth is formed into a microporous structure by mixing inorganic nonmetallic natural ceramic fine powder and hydrophilic binder with a weight ratio of nonwoven fabric by 10-20% to impregnate the nonwoven fabric and compressing it at high temperature so as to surround the core to prevent inflow of soil. Characterized in that consisting of.

In addition, the non-metallic natural ceramics fine powder is silica, kaolin, clay, magnesia, talc, limestone, limestone, granite, diorite, andesite, basalt, tuff, sandstone, shale, slate rock, diatomite volcanic ash, gneiss, feldspar, coal ash, marble It characterized in that the one or more selected from among the pulverized.

Forming a horizontal drainage layer on the soft ground and installing the drainage material on the soft ground, the drainage material by winding the drainage material of claim 1 to claim 4 wound around the heating spinning device rotated in the reverse direction of the winding direction A first step of restoring the flatness of the second step, and a second step of inserting the drainage material wound on the heating wheel device into the inside of the steel pipe casing in which a steel pipe casing head jaw is formed at the bottom and an embossed open steel pipe is installed at the periphery; A third step of sealing the end of the drainage by covering the filter bag at the tip of the drainage in the second step; and installing a cover plate at the end of the steel pipe casing to form a drain casing sealing the end of the steel pipe casing, wherein the cover is formed on the cover plate. Fourth stage to hang up the drainage material on the plate hook and wind it up and attach it to the side of the drainage material and seal the end of the steel pipe casing with the cover plate And a fifth step of inserting the drain casing into the ground by using a drain material inserting device, and then drawing only the steel pipe casing to the ground, and cutting the drain material to protrude to the ground after the drawing of the steel pipe casing. And a sixth step of embedding, and a seventh step of carrying out the projected soil for drainage consolidation promotion on the horizontal drainage layer.

Hereinafter, the configuration and operation of the embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Figure 3 is a perspective view showing the shape of the drainage with a vertical drainage core of the present invention, Figure 4 is a front view showing the shape of the drainage with a vertical drainage core of the present invention, Figure 5 is a cylindrical drainage core of the present invention As an illustration showing the shape of the drainage provided with,

Drainage 10 of the present invention comprises a drainage core 12 having a water outlet for draining the gap water in the ground, and a filter cloth 11 to surround the drainage core 12 to prevent the inflow of soil.

The filter cloth 11 is prepared by mixing an inorganic nonmetallic natural ceramic fine powder and a hydrophilic binder in a nonwoven fabric with a nonwoven fabric weight ratio of 10 to 20%, impregnating the nonwoven fabric, and then compressing it with a high temperature compressor of 85 to 230 ㅀ.

The inorganic non-metallic natural ceramics fine powder is silica, kaolin, clay, magnesia, talc, limestone, limestone, granite, diorite, andesite, basalt, tuff, sandstone, shale, slag, diatomite volcanic ash, gneiss, feldspar, coal ash, marble Grind any one or more selected from among them.

In addition, when wrapping the drainage core 12 using the filter cloth 11, the suture of the filter cloth 11 is preferably used, such as fine fiber, natural fiber, conductive metal yarn.

On the other hand, the drainage core 12 is composed of a vertical drainage core 12a and a cylindrical drainage core 12b to drain the number of gaps in the ground.

The vertical drainage core 12a has a plurality of partitions 14 having a predetermined height formed in a longitudinal direction, and a water passage 13 is formed therebetween, and partitions connecting the partitions 14 and the adjacent partitions 14 to each other. Having a connector 15; The partition connector 15 is installed at predetermined lengths in the longitudinal direction of the vertical drainage core 12a and connected to be inclined downward in the width direction of the vertical drainage core 12a, and the lower portion adjacent to the upper partition connector 15 is provided. The partition connector 15 is formed to have a lower height of the partition 14 so as to form a water channel 13 to form a bent channel, the partition connector 13 is the width of the vertical drainage core (12a) After reaching the end of the direction the slope is formed to reverse.

The inclination angle of the partition connector 15 is 18 to 22 ° with an adjacent partition so as to correspond to the vertical strain ΔS _v / day <5.0 cm, the horizontal strain ΔS _h / day <2.0 cm, which is a standard standard for stable management of soft ground. It is connected to be inclined to an extent.

In addition, the partition connector 15 is formed at intervals of 30cm ~ 50cm in the longitudinal direction of the vertical drainage core (12a). This is the drainage material 10 installed in the ground is deformed into a shape bent at intervals of 20 ~ 50cm as described above, the general packaging specifications of the drainage material 10 packed in a circular unit of the outer diameter 110cm, inner diameter 15cm unit It is because it is formed in 200-300 m in length, and the average chord length deform | transforms every 40-50 cm.

As described above, the present invention allows the drainage material 10 to be flexibly compliant with the vertical deformation and the horizontal deformation force of the soft ground by the vertical drainage core 12a.

Meanwhile, as shown in FIG. 5, the cylindrical drainage core 12b has a concave concave portion 16 and concave-convex portion 17, and a hole 18 is formed in the concave portion 16, and the concave-convex portion ( A water outlet is formed in 17).

Meanwhile, the manufacturing method of the filter cloth will be described in more detail through the drawings and the tables as follows.

The inorganic non-metallic natural ceramics fine powder was tested by the test methods ASTM D4751 and ASTM D6767- (2002), which were commissioned by the Korea Textile Testing Institute and the Korea Apparel Testing Institute, respectively. The results of measuring the injected samples (GW-20, GW-10) and normal samples (A, B, C) are as follows.

[Figure 1]

TABLE 1

Value A B C GW-10 GW-20 Specification bubble point O98 127.2 133.1 93.8 107.1 115.4 O95 90.7 112.8 88.6 67.0 69.3 85 O90 78.6 105.0 85.2 58.6 59.9 80 O85 68.0 99.5 81.4 52.7 54.1 O60 44.0 85.6 63.6 40.0 39.3 O30 26.4 61.7 42.3 24.7 24.4 O15 17.9 41.5 32.3 16.9 16.6 O10 14.5 31.0 23.7 13.0 13.1 O5 11.3 17.8 12.9 9.2 9.5

[Figure 2]

[Figure 3]

[Figure 4]

The bubble point (O98) measurement results for each sample in [Figure 1] are shown in [Table 1], and [Figure 2] shows the air permeability of each sample. It shows the change of permeability according to the change, and [Figure 4] shows the effective hole size of ASTM D4751.

Table 1 and Figures 1, 2, 3, 4 of the filter cloth of the same weight in the filter cloth of the present invention impregnated with inorganic non-metallic natural ceramics fine powder in the nonwoven fabric of the filter cloth of the present invention, the effective hole of the filter cloth By reducing the size, it satisfies the civil fiber effective hole specification while maintaining the vertical permeability and increasing the microporous density of the nonwoven fabric, thereby improving the horizontal permeability (absorbency).

Figure 6 is an exemplary view showing the shape of the cover plate of the present invention, Figure 7 is an exemplary view showing the shape of a steel pipe casing of the rectangular shape of the present invention, Figure 7a is an illustration showing the shape of a cylindrical steel pipe casing of the present invention. 8 is an exemplary view showing the cover plate and the drainage of the present invention to be embedded in the ground, Figure 9 is an exemplary view showing a state of installing the drainage on the soft ground by using the spinning wheel device of the present invention, Figure 10 is As an exemplary view showing a state in which the present invention is completed on the soft ground,

In the method for installing the drainage material 10 configured as described above on the soft ground 100, the horizontal drainage layer 103 is formed on the soft ground 100, and is wound in one direction in the steel pipe casing 30. Insert the drainage material (10) while loosening it. At this time, the drainage material 10 is wound on the heating mop device 21 rotating in the reverse direction of the winding direction and heated to restore the flatness of the drainage material 10 and then passed through and inserted into the steel pipe casing 30.

Cover the end of the drain material 10 by covering the filter bag (11a) to the front end of the drain material 10 inserted into the steel pipe casing 30, the cover plate 34 is installed at the end of the steel pipe casing (30) To form a drainage casing 35 in which the end of the steel pipe casing is sealed, and the upper end of the drainage material 10 in which the filter bag 11a is covered by the cover plate ring 34a formed on one side of the cover plate 34. Protruding into the side of the drain material to form a drain casing (35), and the drain casing (35) is inserted into the ground using the drain reinserting device (20) and then draws only the steel pipe casing (30) to the ground. . In this case, the drainage material 10 inside the steel pipe casing 30 is cut to protrude to the top of the horizontal drainage layer 103 and the excess gap water drained through the drainage material 10 flows to the drainage side opening 101. (10) and the horizontal drainage 104 is connected to the drain side opening 101, and the overlying soil 102 in the upper portion of the horizontal drainage 104 to facilitate the consolidation of the soft ground (100) soft ground ( Dehydrate 100).

Meanwhile, in the method of forming the drain casing 35, the drain material core 12 at the end of the drain material 10 inserted into the steel pipe casing 30 is cut to a predetermined length, and the drain material 10 from which the drain material core 12 is cut. ) The filter cloth 11 at the end is hooked on the cover plate ring 34a and the upper portion of the filter cloth 11 is attached to the side of the drain 10. Then, the cover plate 34 is formed at the distal end of the steel pipe casing 30.

The steel pipe casing 30 is an embossed open steel pipe 31 is installed along the outer circumference, the head 32 is formed at one end, the steel pipe casing head chin 33 is formed in the head 32 When the drainage material 10 having the vertical drainage core 12a is inserted therein, a steel pipe casing having a rectangular shape is generally used, and the drainage material 10 having the cylindrical drainage core 12b is inserted therein. It is preferable to use a rectangular steel pipe casing.

When the soil is inserted into the soft ground of the steel pipe casing 30, the soil is extruded to the ground through the bidirectional open steel pipe 31, thereby reducing the ground disturbance is generated to suppress the drainage capacity of the drainage 10 excess pore water.

In addition, the cover plate 34 is folded upward by the earth pressure by the steel pipe casing head chin 33 to prevent close contact with the head 32 to increase the fixing performance in the ground.

The heating mop device 21 is wound in one direction to wrap the produced drainage material 10 is wrapped and produced in the reverse direction of the first wrapped and wound at the same time to apply heat to increase the restoring force of the drain material core 12 drainage (10) to relieve the bending state to restore the flatness.

As the drainage material is wound in the reverse direction of the original packing direction through the heating wheel device 21 and passed through, the flatness is restored, and thus the steel pipe casing 30 is inserted in a vertically expanded state when inserted into the steel pipe casing 30. When drawing out, the friction occurrence factor with the drain material 10 is suppressed, thereby reducing the damage of the filter cloth 11 and the water inlet 13.

In addition, the heating mop device 21 does not require a separate power means by heating the drain material 10 by the power of the drain material inserting device 20, a plurality can be installed in accordance with the recovery of the flatness of the drain material. .

The present invention is not limited to the above-described specific preferred embodiments, and various modifications can be made by any person having ordinary skill in the art without departing from the gist of the present invention claimed in the claims. Of course, such changes will fall within the scope of the claims.

The effect of the present invention can be expected by the configuration and action as described above, to effectively respond to the vertical and horizontal deformation of the ground caused by the settlement of the soft ground to increase the initial permeability performance, the bending and twisting of drainage material The drainage material is installed in the soft ground through the open-type embossed steel pipe and the steel pipe casing with the steel pipe casing head jaw, so it reduces the disturbance of the ground and raises the underground settlement efficiency of the drain material. It is a very useful invention that improves the quality of construction by improving efficiency, and reduces the construction period and cost.

1 is an exemplary view showing the packaging and disassembly of a general drainage material,

2 is an exemplary view showing a state in which a conventional drainage material is inserted into the steel pipe casing;

3 is a perspective view showing the shape of a drain having a vertical drainage core of the present invention,

4 is a front view showing the shape of a drain having a vertical drainage core of the present invention,

5 is an exemplary view showing the shape of a drain material having a cylindrical drainage core of the present invention;

6 is an exemplary view showing the shape of a cover plate of the present invention;

7 is an exemplary view showing the shape of a rectangular steel pipe casing of the present invention,

Figure 7a is an exemplary view showing the shape of the cylindrical pipe casing of the present invention,

8 is an exemplary view showing the buried in the ground by connecting the cover plate and the drain of the present invention,

9 is an exemplary view showing a state in which drainage is installed on the soft ground using the spinning wheel according to the present invention;

10 is an exemplary view showing a state in which the present invention completed the construction on the soft ground,

<Description of the symbols for the main parts of the drawings>

(10): drain material (11): filter cloth

(11a): filter bag (12): drainage core

(12a): vertical drainage core (12b): cylindrical drainage core

(13): water outlet 14: partition

(15): partition connector (16): recess

(17): irregularities (18): perforation

(20): drainage inserting device (21): heating wheel device

(30): steel pipe casing (31): embossed open steel pipe

(32): head (33): steel pipe casing head jaw

(34): cover plate (34a): cover plate hook

(35): drain casing (100): soft ground

(101): drainage opening (102): overfilled soil

(103): horizontal drainage layer (104): horizontal drainage

Claims (7)

A drainage core is formed to discharge water from the ground to the ground; The inorganic nonmetallic natural ceramics fine powder and the hydrophilic binder are mixed at a weight ratio of 10 to 20% of the nonwoven fabric to impregnate the non-woven fabric so as to surround the draining material core to prevent the inflow of soil. Dehydration promoting drainage of soft ground, characterized in that consisting of filter cloth. The method of claim 1, The non-metallic natural ceramics fine powder is silica, kaolin, clay, magnesia, talc, limestone, limestone, granite, diorite, andesite, basalt, tuff, sandstone, shale, slab, diatomaceous earth ash, gneiss, feldspar, coal ash and marble. Dehydration promoting drainage of the soft ground, characterized in that made by pulverizing any one or more selected. The method of claim 1, The drainage core is a soft ground dehydration promoting drainage, characterized in that consisting of a cylindrical or vertical. The method of claim 3, wherein The vertical drainage core has a water passage formed between a plurality of partitions having a predetermined height formed in a longitudinal direction, and includes a partition connector for connecting the partition adjacent to the partition; The partition connector is formed at a predetermined length in the longitudinal direction is connected to be inclined downward in the width direction, between the upper partition connector and the lower partition connector adjacent to the lower partition to form a water outlet to form a bent water flow port bent And dehydration promoting drainage of the soft ground, wherein the partition connector is inclined in a reverse direction after reaching the end of the width direction. The method of claim 4, wherein The partition connector is formed at intervals of 30cm ~ 50cm in the longitudinal direction of the drainage core, the widthwise inclination angle of the partition connector is made of inclined angle of 15 ~ 22 ° characterized in that the soft ground dehydration promoting drainage. In forming a horizontal drainage layer on the soft ground and installing drainage material on the soft ground, A first step of restoring the flatness of the drainage material by winding the drainage material of claim 1 wound around one direction in a heating spinning apparatus rotating in the reverse direction of the winding direction; A second step of inserting a drain pipe wound around the heating mop device in a steel pipe casing having a steel pipe casing head jaw formed at a lower end thereof and having an embossed open steel pipe at the circumference; A third step of sealing the drain material by covering the filter bag at the tip of the drain material in the second step; The cover plate is installed at the end of the steel pipe casing to form a drain casing which seals the end of the steel pipe casing. A fourth step of sealing the casing end; A fifth step of inserting the drain casing into the ground using a drain reinsertion apparatus and drawing only the steel pipe casing to the ground; A sixth step of cutting the drainage material to protrude to the ground after the drawing of the steel pipe casing, and burying an end portion thereof in the horizontal drainage layer; Method of installing a soft ground dehydration promoting drainage, characterized in that it comprises a seventh step of the projected soil for drainage consolidation promotion on the horizontal drainage layer. The method of claim 6 Sealing the drainage of the third step is the installation method of the soft ground dehydration promoting drainage, characterized in that for cutting the drainage core at the end of the drainage material to a predetermined length inside the filter cloth, and seal the filter cloth at the end of the drainage material in which the drainage material core is cut. .