WO2005090691A1 - 繊維補強土工法及び該工法による構築物 - Google Patents
繊維補強土工法及び該工法による構築物 Download PDFInfo
- Publication number
- WO2005090691A1 WO2005090691A1 PCT/JP2004/003633 JP2004003633W WO2005090691A1 WO 2005090691 A1 WO2005090691 A1 WO 2005090691A1 JP 2004003633 W JP2004003633 W JP 2004003633W WO 2005090691 A1 WO2005090691 A1 WO 2005090691A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- soil
- fiber
- reinforced soil
- fiber reinforced
- slope
- Prior art date
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/20—Securing of slopes or inclines
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/20—Securing of slopes or inclines
- E02D17/207—Securing of slopes or inclines with means incorporating sheet piles or piles
Definitions
- the present invention is applicable to the revegetation method, such as a fiber reinforced soil method which blows a plurality of fibers and sand or a sand-like object to a construction site to be reinforced, and a structure which is constructed by the third method. It relates to the building. Background art
- this method has limitations in terms of strength, and for example, rainfall immediately after spraying, snow melt water, etc. caused erosion of the spray material 61 due to runoff collapse and runoff of the greening base material.
- the growth base material 62 for vegetation with a thickness of 3 to L 0 cm has limitations to support the growth of plants, and is insufficient for the plants to grow persistently and healthy.
- a pot-like greening block 50 created by filling soil etc. in a container with the top opened on the foundation concrete 51 is stepped along the slope.
- Know how to plant plants 52 in soil exposed slightly on the top of the greening project 50 Although this method can not green the entire slope, it is not desirable in terms of landscape.
- a main anchor pin 4 8 a and an auxiliary anchor pin 4 8 b are inserted. Then, after forming a frame 5 3 by spraying a molasses to the frame-enclosed part, a lath wire mesh 4 7 is stretched in the frame to make 3 to 10 cm thick 3 ⁇ 4 ⁇ There is also known a method to spray and build the growth base material 54.
- the growth base material 54 for the 3 to 10 cm thick LOC is also limited in supporting the growth of plants, and the plants are persistent. In addition to being insufficient for healthy growth, it is not possible to green the entire slope because it is greening within the grid frame, which is not preferable in terms of landscape.
- «longer fibers incorporated in a mortar as a spray material may be mixed as a stabilization method, as disclosed in Japanese Patent Publication No. 5 3 4 7 6 0 2 or Japanese Patent Publication No. No. 5 1 6 7 1 7 0 etc.
- the flow preventing effect of the sprayed material is enhanced and the reinforcing effect by the pseudo adhesive force of the continuous fibers is obtained, so that the cement etc. in the sprayed material is joined.
- the proportion of wood used can be reduced, and the reinforced soil itself created from the spray material and continuous fiber can be used as a plant growth base. That is, reinforced soil makes it possible to green the entire slope, which is excellent in terms of landscape.
- the object of the present invention is to strengthen the ground such as slopes by spraying fibers with sandy soil, the plants can be made permanently healthy by supplying water and fertilizer to the plants in a drastic manner.
- the aim is to provide a fiber reinforced soil construction method that can be sustained and sustain a landscape by greening.
- the object of the present invention is to strengthen the ground such as a slope in a structure that strengthens the ground such as a slope, and to make a landscape with green grass by; Supply by providing a construct that allows the plant to grow persistently and healthy. Disclosure of the invention
- the present invention is a fiber comprising: a sandy soil conveying device for conveying sandy soil; and a fiber feeding device for continuously feeding a plurality of fibers.
- the gist is to spray sandy soil and fibers on materials and create them, and to embed materials with ⁇ 3 ⁇ 4 ⁇ and fertilizer-retention properties in reinforced soil.
- the fiber reinforced soil strengthens the ground such as slopes, and holds the fertilizer in the material having water retention ability and fertilizer retention property. Will never be washed away at once. Also, since materials with feK nature and fertility can store rainwater, it is possible to supply water and fertilizer to plants on reinforced soil. In addition, fiber reinforced soil has high shear strength without using much cement or other bonding material, so it is possible to avoid the use of many bonding materials that hinder the growth of plants. Since it does not inhibit root elongation, plant roots can grow while absorbing water and fertilizer, and plants can be persistently and healthyly grown.
- the present invention according to claim 2 is characterized in that: the formed reinforced soil surface is sprayed with 11 ⁇ 2 of a volume, particularly sand soil of the reinforced soil surface formed (sand or similar to sand, eg mountain sand, river sand) , Sand, masa soil, shirasu soil, etc.) after cleaning and removing, and the thick soil spray based on vegetation on the surface of reinforced soil.
- a volume particularly sand soil of the reinforced soil surface formed (sand or similar to sand, eg mountain sand, river sand) , Sand, masa soil, shirasu soil, etc.) after cleaning and removing, and the thick soil spray based on vegetation on the surface of reinforced soil.
- the entire surface of the reinforced soil can be covered with a weir by spraying on the surface of the formed reinforced soil, thereby making the state suitable for plant growth.
- a weir by spraying on the surface of the formed reinforced soil, thereby making the state suitable for plant growth.
- the sandy soil remaining on the surface of the reinforced soil flows, or the reinforced soil and There is no gap between them, and 3 ⁇ 4 ⁇ break can be stably fixed on reinforced soil.
- the present invention according to claim 3 is characterized in that after the pot for a hole is buried so that a part having a water holding property and a fertilizer holding property is in proximity to the material and having a part protruding from the reinforced soil surface, the reinforced soil is formed.
- the gist is that plant seedlings are planted in the holes formed by removing the potting holes.
- the planting hole port is buried close to the material having conductivity and fertility, the planting hole pot can be removed and the root of the seedling to be planted can be brought close to the organic block. It can easily absorb moisture and fertilizer from materials with water retention and fertility and can grow well.
- the gist of the present invention according to claim 4 is that the mixing direction of the fibers from the fiber supply device to the sandy soil is in the form of a receiving disk.
- the mixing direction of the fibers from the fiber feeding device into the sand is such that there is no fear of flowing even if the fibers are continuous by making the receiving plate like, and if the fibers are flowbed like It is possible to secure more shear strength. That is, it is excellent in the point of ⁇ 1 ⁇ strong, and can stabilize the breeding environment of 3 ⁇ 4 for a long time.
- the gist of the present invention according to claim 5 is characterized in that the receiving disk shape has a height angle of 7 ° to 20 ° with respect to the horizontal plane intersecting the slope.
- the required shear strength can be obtained with certainty.
- its construction means the integrity as a soil structure, the mixture of sandy soil and fibers, and the vegetation base.
- the continuous fiber mixing direction is in the direction of the slope with respect to the slope with respect to the smooth slope from the point of view.
- the slope of the slope is 1: 1.5 to 1: 0.8 of ⁇ : ⁇ , horizontal thickness It can be built with about 30 cm in length and can secure a construction thickness of 15 cm or more.
- the gist of the present invention according to claim 6 is to construct the reinforced soil so that the slope of the finished surface has a gentle slope of 1: 0.3.
- the slope of the ground such as the cut slope is steep, and the growth of the plant is difficult: even if ⁇ , the slope slope of the finished surface of the reinforced soil is the plant Since the growth gradient is a gentle gradient of 1: 0.3 or more, the plant can be continuously grown in a healthy manner.
- the present invention according to claim 7 is a fiber reinforced soil structure constructed by the above method. It is a summary.
- the fertilizer necessary for the growth of plants is retained in the material having water retention and fertility. Therefore, the fertilizer will not be washed away at one time due to rainfall.
- materials that have fek and fertilization properties can store rainwater, so that plants on reinforced soil can be supplied with water and fertilizer.
- fiber reinforced soil has high shear strength without using much cement or other bonding material, so it is possible to avoid the use of many bonding materials that hinder the growth of plants. Since it does not inhibit the growth of plants, plant roots can be grown while absorbing water and fertilizer, and the plants can be persistently grown healthy.
- FIG. 1A is a longitudinal cross-sectional view showing one difficulty of a slope protection type construction constructed by the fiber reinforced soil method of the present invention.
- FIG. 1B is a partially cut away plan view showing one of the problems of a slope protection type construction constructed by the fiber reinforced soil method of the present invention.
- FIG. 2 is a vertical cross-sectional side view showing a bell-shaped state of the construction of the retaining wall and the sheath according to the fiber reinforced soil method of the present invention.
- FIG. 3 is an explanatory view of an embodiment of a fiber reinforced soil construction method of the present invention.
- FIG. 4 is a plan view of the ejector.
- FIG. 5 is an operation explanatory diagram of one ejector.
- FIG. 6 is an explanatory view of a process of creating reinforced soil in the embodiment of the fiber reinforced soil construction method of the present invention.
- FIG. 7 is an explanatory view of a completion state of reinforced soil in the embodiment of the fiber reinforced soil construction method of the present invention.
- FIG. 8 is an explanatory view showing a state in which the fibers are constructed so as to be in a receiving disc shape in one embodiment of the fiber reinforced soil construction method of the present invention in comparison with a state in which the fibers are formed in a flow disc.
- FIG. 9 is an explanatory view showing the relationship between the slope slope and the slope of the finished surface in the fiber reinforced soil method of the present invention.
- FIG. 10 is an explanatory drawing showing the completed state of the planting hole in the embodiment of the fiber reinforced soil construction method of the present invention.
- FIG. 11 is an explanatory view showing a state of planting seedlings in the form of the fiber reinforced soil construction method of the present invention.
- FIG. 12 is an explanatory view showing a state in which the thick layer base material is sprayed in the embodiment of the fiber reinforced soil construction method of the present invention.
- FIG. 13 is an explanatory view of strength calculation of the fiber reinforced soil method of the present invention.
- Figure 14 A is a view of the extra 4 ⁇ of the pin.
- Figure 14 B is a cross-sectional plan view of the pin.
- Figure 15 is a vertical cross-sectional side view showing an example of a construction created by the conventional method.
- Fig. 15B is a partially cutaway plan view showing an example of the construction constructed by the conventional method.
- Fig. 16 is a longitudinal side view showing another example of the construction constructed by the method of the present invention.
- FIG. 17 is a longitudinal side view showing still another example of the construction constructed by the conventional construction method.
- Fig. 18 is a longitudinal cross-sectional view showing still another example of the construction constructed by the conventional construction method.
- Fig. 18 is a partially cutaway plan view showing still another example of the construction constructed by the construction method. It is. BEST MODE FOR CARRYING OUT THE INVENTION
- a fiber reinforced soil 55 with a substantially uniform thickness on the slope according to the slope of the slope 41 hereinafter referred to as slope protection type figure 1 A, figure IB
- Fiber reinforced soil 5 5 will be created by making the side thicker and forming a retaining wall (hereinafter, Retaining wall type I dog type).
- Back surface drainage is carried out by laying back surface drainage material 81 with a porous mat with a thickness of about 1 to 3 cm, as shown in Fig. 1B.
- 1 is a fiber feeding device, and the fiber 2 delivered from the fiber feeding device 1 is fed from a water tube 3 through a high pressure pump 4 through a high pressure pump 4 using high pressure water. It consists of an ejector (7) jetted from a jet nozzle (6), to which a sandy soil feeder (8) is combined.
- sandy soil refers to sand or sand-like materials, such as mountain sand, river sand, sea sand, masa soil, soil, and small soils.
- the sandy soil feeder 8 comprises a scale 11 having a hopper 10 connected to a belt conveyor 9a, and a sprayer 12 connected to the scale 11 via a belt conveyor 9b.
- 13 indicates a tractor-excavator that transports sand or sand-like objects from sandhill 14 and 15 indicates a compressor that supplies compressed air to sprayer 12.
- the material hose 3 3 is connected to the sprayer 12, and the tip thereof is sand or a jet nozzle of an object similar to sand.
- reference numeral 16 denotes a power source serving as a power source for the weighing instrument 11, etc.
- 17 denotes a distribution board
- 18 denotes a weighing device for measuring the amount of fiber fed out from the fiber feeding device 1.
- the fiber feeder 1 comprises a portable bobbin case 21 having a single guide stage 20 which bundles and delivers the fibers 2 from a plurality of (four in the illustrated example) thread windings 19.
- the ejector 1 is composed of a combination of a yarn transfer member 22 and a peristaltic means 23
- the header 22 is a fiber from the fiber supply device 1 It has four fiber guides 24 for drawing in the fibers 2 and four jet nozzles 6 for jetting the fibers 2 together with high pressure water or compressed air.
- the pivoting means 23 pivots the cylinder 27 obliquely upward to the arm 29 whose one end is attached to the base 30, and the upper end of the pivoting arm 26 at the tip of the piston 28 of the cylinder 27.
- the lower end of the swing arm 26 is fixed to the pivoting tube 25 and the pivoting tube 25 is coaxially connected to the holder 22.
- the rotation pipe 25 is connected to the supply pipe 5 such as high pressure water through the rotation joint.
- 32 is an operation unit.
- each bobbin case 2 1 of the fiber feeding device 1 4 fibers 2 as continuous fibers drawn out from the yarn rod 1 9 are bundled into one, and from the discharge port 35 5 and the guide stay 20 It is passed through the jet nozzle 6 through the fiber guide 24 of the ejector 7. The amount of fiber 2 supplied is detected by the load cell 34 and measured by the weighing device 18.
- the ejector 1 when high pressure water sent from the water tube 3 through the high pressure pump 4 through the supply pipe 5 is jetted from the jet nozzle 6, the f
- the piston 28 of the cylinder 27 reciprocates, and at the same time, the upper end of the swing arm 26 attached to the tip of the piston 28 is a circle. Move along the arc i and move the lower end at the fixed part with the rotating tube 25.
- the pivoting tube 25 pivots integrally with the lower end of the pivoting arm 26. This pivoting motion is transmitted to the coaxial header 22 and the header 12 also pivots. As a result, the injection nozzle 6 provided on the header 12 moves in an arc shape.
- the injection nozzle 6 automatically swings without moving the hand, and the fiber 2 and the injection destination of the jet water reciprocate automatically, and each part becomes uniform. Mix with sand or something similar to sand.
- the fiber reinforced soil which is mixed with the sandy soil by injecting the fiber together with jett water, secures the design mixing amount of 3.3 kg / m 3 of continuous fiber.
- the standard of sandy soil used in this way it is possible to use soil such as silas in Shirasu upland and Masa in granite area, and various types of soil can be used.
- the continuous fiber ribbon used in this way can be made of various materials, strengths and sizes, and it can be used regardless of the quality of degraded fiber etc.
- the fiber thickness is 1 Use polyester fiber or polypropylene fiber of 6 7 T ex (1 50 d).
- the header 22 is rotated by the reciprocating motion of the piston 28 of the cylinder 27, so that the injection nozzle 6 provided on the header 22 has an arc-shaped trajectory. Although it moves and moves, along with the peristalsis of the injection nozzle 6, the injection destination of the fiber 2 and the jet water reciprocates automatically.
- construction can be performed using machines ⁇ .
- the fibers to be supplied may be joined to the sand jet nozzle, or sand or sand
- the jet nozzle of the fiber may be fixed to the jet nozzle of an object similar to sand.
- a material 42 with water retention and fertilization properties is placed, and a material with ifck properties and fertilizer retention 4 Place pot for planting hole 4 3 such as void pipe in proximity to 2 and make the tip of planting hole port 4 3 come out from the surface of reinforced soil, material with feK property and fertilization property 4 Build fiber reinforced soil 5 5 on 2 and port 3 for planting hole.
- a commercially available material (for example, under the trade name "Green bullet No. 4") is used as the material 42 having this ifcK property and fertilization resistance, and a material 42 having water retention and fertilization and a planting hole Two pots 4 3 are arranged at an interval of 2 m 2 .
- the water-retaining and fertilizer-retaining material 4 2 is mainly formed of peat moss and organic matter base material by park compost, and as an example, cedar-made plaques are peat moss 3, park compost 5, permikiyu raito It shall be compression molded at a ratio of 0.5, Zeolite 0.5, Bentonite 0.5, Par Light 0.5.
- the whole dog can be in the form of a cylinder or square.
- the size is about height 8 (cm), diameter 10 to 18 (cm), weight 4 0 0-1, 3 0 0 ( g) about.
- the mixing direction of the continuous fibers from the fiber feeding device 1 into the 5 "small is made to be a receiving plate, and this receiving plate is In the case of slope protection, a height angle of 7 ° to 20 °, preferably a height angle of 15 ° or more, with respect to the horizontal plane X intersecting the slope 31 is to be used.
- a height angle of 7 ° to 20 °, preferably a height angle of 15 ° or more, with respect to the horizontal plane X intersecting the slope 31 is to be used.
- in 8 is the case where the fiber direction is flow-shaped.
- the slope of the finished surface of the fiber reinforced soil 55 is made to be less than 1: 0.5.
- the planting hole pot 4 3 is removed to form a plant seedling 4 4 without leaving a gap in the hole 45 formed. Plant. It is difficult to dig a hole for planting seedlings after creating fiber reinforced soil 55, but in this way it is possible to easily create holes 45 for seedlings.
- Thick-layer substrate spraying is used to spray the vegetation substrate to a thickness of 3 to 10 cm using a pump or mortar gun, and 3 ⁇ 44 ax is artificial soil or organic waste (soil, wood fiber, park , Peat moss etc).
- per unit m 3 of thick layer 6 is organic vegetation 200 0 liters Chemical substance 3 k, Slow-acting fertilizer 3 kg, Resin-based powder 1 kg as an erosion inhibitor, Others, Plant seeds are blended according to the greening target.
- the seedling 4 4 may be under pressure, so consider using mulching material 3 9 in combination.
- the mulching material 39 is a natural fiber juctcross material backed with a kraft paper, and has a land temperature stability and ifcK property comparable to that of a laying straw. It is excellent in the rise prevention.
- a mesh body 70 such as a metal mesh or synthetic-knitted net on the upper surface of fiber reinforced soil 55.
- the fabric 70 is locked with the hook 7 1 a of the head of the pin 7 1 which is inserted into the fiber reinforced soil 5 5.
- the outline of the bottle 7 1 a is shown in Fig. 15 A. It is made of synthetic resin, has a pointed tip, and the main body is a longitudinal rib that projects from the center as cross-section cross-shaped or character-shaped. 7 1 b is provided, and upward ridges 7 1 c are formed at the upper and lower intervals at the side end of the longitudinal rib 7 lb.
- the cross section is shown in Fig. 15B.
- a flat portion 71 d for impact receiving is formed at the top of the pin 71 so that it can be driven.
- the pin 71 is disposed, for example, 1 8 Z l O m 2 about interval.
- Pin 71 lays net 70 on fiber reinforced soil 55, and then inserts it in fiber reinforced soil 55, and finally locks mesh 7 1 a of net 4 on the head.
- the continuous fibers of the fiber reinforced soil 5 5 are entangled with the ridges 7 1 c of the pin 7 1 and the pin 7 1 can be prevented from coming out, and the mesh 70 and the fiber reinforced soil 5 5
- the integral connection with the pin 8 and the reinforcement by the mesh 70 ensure stability to the surface layer.
- net body 70 is fiber reinforced soil 5 5 It is also possible to lay a little floating on the top of the net so that the mesh 70 can get into the thick layer Si46.
- the material 42 having the K-type and the fertilizer-retaining property gradually supplies water and fertilizer to the plant, and can grow well.
- the fibers mixed in the reinforced soil do not prevent the growth of the roots of plants, and it entangles with the roots to further strengthen the reinforcing effect of the soil.
- planting hole port 4 3 is embedded so that it is close to the material 42 having water retention and fertility and partially protrudes from the surface of the reinforced soil, and planting is performed after the reinforced soil is created. Since the plant seedlings 4 4 are planted in the holes 45 formed by removing the pots for holes 4 3, it is possible to compare the roots of the trees grown with the plants 4 4 and the plants 4 4 with conductivity and fertility. Adjacent material 4 2 will be close, and water and fertilizer absorption will be good.
- the fiber reinforced soil 55 is constructed so as to form a receiving plate having a height angle of 7 ° to 20 ° with respect to the horizontal plane where the fiber intersects the slope, the constructed structure is Sufficient strength can be obtained.
- the fiber reinforced soil 55 was constructed so as to form a receiving plate having a height angle of 15 ° with respect to the horizontal plane where the fiber intersects with the slope.
- intensity rate the ratio of intensity to the horizontal plane to the fiber intersects with the slope.
- T tGEo Unit weight of fiber reinforced soil
- the fiber reinforced soil method of the present invention is a method of spraying water with fertilizers into plants while strengthening the soil surface by spraying fibers with 5 "soil.
- the plants By supplying the plants, the plants can be persistently and healthyly developed, and the scenery by greening can be sustained.
- the structure of the present invention is a structure for strengthening the ground such as a slope, etc., and it is to be remedied by revegetation by the plant while strengthening the ridges such as the slope and continuously supplying water and fertilizer to the plant.
- the plants can be grown persistently and healthy.
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
- Cultivation Of Plants (AREA)
Abstract
Description
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Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2004/003633 WO2005090691A1 (ja) | 2004-03-18 | 2004-03-18 | 繊維補強土工法及び該工法による構築物 |
TW093110975A TW200532075A (en) | 2004-03-18 | 2004-04-20 | Method of fiber-reinforcement earthwork and construct obtained by the earthwork method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2004/003633 WO2005090691A1 (ja) | 2004-03-18 | 2004-03-18 | 繊維補強土工法及び該工法による構築物 |
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Publication Number | Publication Date |
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WO2005090691A1 true WO2005090691A1 (ja) | 2005-09-29 |
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PCT/JP2004/003633 WO2005090691A1 (ja) | 2004-03-18 | 2004-03-18 | 繊維補強土工法及び該工法による構築物 |
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TW (1) | TW200532075A (ja) |
WO (1) | WO2005090691A1 (ja) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002209436A (ja) * | 2001-01-15 | 2002-07-30 | Mito Green Service:Kk | 植物生育基盤材と造成方法 |
JP2003301439A (ja) * | 2002-04-08 | 2003-10-24 | Nittoc Constr Co Ltd | 護岸構造 |
-
2004
- 2004-03-18 WO PCT/JP2004/003633 patent/WO2005090691A1/ja active Application Filing
- 2004-04-20 TW TW093110975A patent/TW200532075A/zh unknown
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002209436A (ja) * | 2001-01-15 | 2002-07-30 | Mito Green Service:Kk | 植物生育基盤材と造成方法 |
JP2003301439A (ja) * | 2002-04-08 | 2003-10-24 | Nittoc Constr Co Ltd | 護岸構造 |
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