A crack resistant geotextile and method of making same

Abstract

The application belongs to the technical field of engineering construction soil protection, and provides an anti-cracking geotextile and a manufacturing method thereof, which comprises a fabric layer, a first reinforcing layer and a second reinforcing layer arranged on the top and bottom of the fabric layer respectively, and a glue layer arranged between the fabric layer and the first reinforcing layer and the second reinforcing layer; a tensile layer is arranged at the bottom of the second reinforcing layer, and a PE film layer is arranged at the top of the first reinforcing layer. Thus, the geotextile can prevent the phenomenon of bare soil dust, has excellent tensile and anti-cracking properties, can bear the daily walking of construction personnel, the storage of equipment, and even the rolling of trucks, and can ensure the construction, and can be recycled at the end of the project and used for road paving and soil layer construction of landscaping. The second-use geotextile still has good tensile and anti-cracking properties.

Description

TECHNICAL FIELD

[0001] The present application is suitable for the technical field of protecting engineering construction soil, and provides an anti-cracking geotextile and a manufacturing method thereof. BACKGROUND

[0002] In order to prevent dust, most of the construction sites in the country will cover the bare soil and garbage piles with soil green nets. However, the soil green net method has little effect on avoiding dust in dry weather, which is specifically manifested as follows: under the condition of much rain, the large pores of the soil green net are easily sunk in the mud under the trampling and extrusion, and after drying, the bare soil on the upper part of the green net will still cause dust, and the soil green net will be damaged and cannot be used after being used for 1-2 months due to the large pores and the extremely soft material, and then becomes garbage. Moreover, the cheap soil green net is difficult to degrade, causing another pollution.

[0003] The geotextile is an engineering material, also known as a geotextile or a geosynthetic material, which has the characteristics of good water permeability, aging resistance, and high tensile strength. The geotextile is mainly used for soil reinforcement, protection, filtration, and drainage in civil engineering. It can be used for preventing soil erosion, reinforcing soil, and constructing anti-seepage walls. In terms of price, the ordinary geotextile and the soil green net with slightly better quality are extremely similar in price, and in the construction of buildings, some construction units have gradually used the geotextile to cover the bare soil, and the geotextile can be recycled and reused at the end of the project for road paving and soil layer construction for landscaping.

[0004] However, the ordinary geotextile on the market is still prone to breakage when used as a soil covering material due to its softness, long-term exposure to sunlight, short-term equipment placement and bearing, or trampling. SUMMARY

[0005] In view of the above defects, the present application aims to provide an anti-cracking geotextile and a manufacturing method thereof, which aims to solve the problems raised in the background art.

[0006] An anti-cracking geotextile comprises a fabric layer, a first reinforcing layer and a second reinforcing layer are respectively arranged on the top and bottom of the fabric layer, and an adhesive layer is arranged between the fabric layer and the first reinforcing layer and the second reinforcing layer; a tensile layer is arranged at the bottom of the second reinforcing layer 2, and a PE film layer is arranged at the top of the first reinforcing layer.

[0007] Further, the adhesive layer is a hydroxypropyl methylcellulose colloidal solution coating.

[0008] Further, the fabric layer is made of hemp threads, nylon threads, and polypropylene woven filaments.

[0009] Further, the hemp fiber yarn is twisted with soft fiber, hard fiber and cotton fiber; the soft fiber includes one or more of ramie, flax and nettle, the hard fiber includes one or more of sisal, banana and pineapple, and the ratio of the soft fiber, hard fiber and cotton fiber is 5:1:1.5.

[0010] Further, the nylon yarn is a core-spun nylon yarn, the core-spun nylon yarn uses a filament of polyamide nylon material as an inner core, and the inner core is wrapped with natural fiber.

[0011] Further, the arrangement of the hemp fiber yarn, nylon yarn and polypropylene woven filament in the warp and weft directions of the fabric layer is 1:1:1, and the fabric layer has a plain weave structure.

[0012] Further, the first reinforcing layer is a cotton fiber fabric layer, and the second reinforcing layer is a flax fiber fabric layer.

[0013] Further, the manufacturing method of the anti-cracking geotextile includes the following steps:

[0014] S1. Using a weaving device to weave the hemp fiber yarn, nylon yarn and polypropylene woven filament into a fabric layer, and winding and storing the woven fabric layer;

[0015] S2. Dissolving and diluting the hydroxypropyl methyl cellulose powder to prepare a hydroxypropyl methyl cellulose colloidal solution, and placing the hydroxypropyl methyl cellulose colloidal solution in a soaking tank;

[0016] S3. Gradually unwinding the fabric layer, and pressing the fabric layer into the soaking tank in the process, so that the hydroxypropyl methyl cellulose colloidal solution in the soaking tank soaks the fabric layer, then using a scraper to scrape the excess hydroxypropyl methyl cellulose colloidal solution on the fabric layer into the soaking tank, and rewinding the fabric layer;

[0017] S4. Stacking the tensile layer, second reinforcing layer, fabric layer and first reinforcing layer from bottom to top in sequence, and using a knitting device to sew them into one whole to prepare a geotextile;

[0018] S5. Using a film sealing machine to cover the PE film layer on the top of the geotextile, and using a winding machine to wind the geotextile to prepare a geotextile product.

[0019] Further, the specific steps for dissolving the hydroxypropyl methyl cellulose powder in step S2 are as follows: placing the hydroxypropyl methyl cellulose powder in a mixing tank, mixing and stirring with 80-90°C water for 20 minutes, maintaining the temperature of the mixing tank at 80-90°C during the stirring process, and the mass fraction of the hydroxypropyl methyl cellulose powder to water is 1:100; after stirring, adding 100 parts of normal temperature water again, and slowly stirring until natural cooling.

[0020] Thus, in actual use, the engineering team can use the local geotextile to cover the bare soil. When covering, the geotextile roll is directly unfolded, which is convenient to use. The chemical properties of the material itself enable the anti-cracking geotextile to harden over time. The hardened geotextile has extremely strong anti-cracking and anti-tensile properties. The laying construction should be selected on a dry day. When laying, the PE film layer faces up. After the construction personnel uncover the PE film layer, the geotextile gradually dries within 1-3 hours, thus completing the laying of the geotextile. Since hydroxypropyl methylcellulose is almost insoluble in water at room temperature, and it has excellent anti-ultraviolet ability, which makes the dried geotextile extremely small in loss during use. It can not only prevent the phenomenon of bare soil dust, but also has excellent anti-tensile and anti-cracking properties, which can withstand the daily walking of construction personnel, equipment storage, and even truck rolling, ensuring the construction. The local geotextile can be recycled and reused at the end of the project for road laying and landscaping soil construction. Construction personnel can stack the hardened geotextile and transfer it to the roadbed construction site or the landscaping base construction site. Using a mobile high-temperature steam generator, the geotextile is steamed flat, making the geotextile soft and adhering to the roadbed, completing the secondary use of the geotextile, and the secondary used geotextile can still maintain good anti-tensile and anti-cracking properties. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a schematic view of the cross-sectional structure of the geotextile;

[0022] Figure 2 is a schematic view of the fabric layer;

[0023] In the figure: 1-PE film layer; 2-first reinforcing layer; 3-fabric layer; 31-hemp fiber; 32-nylon thread; 33-polypropylene woven wire; 4-second reinforcing layer; 5-tensile layer; 6-adhesive layer. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantages of the present application clearer and more apparent, the present application will be further described in detail below with reference to the drawings. It should be understood that the specific embodiments described herein are only used to explain the present application and do not limit the present application.

[0025] The purpose of the present application is to provide an anti-cracking geotextile and a manufacturing method thereof. Please refer to Figures 1-2 An anti-cracking geotextile includes a fabric layer 3 made of hemp fiber 31, nylon thread 32 and polypropylene woven wire 33.

[0026] The hemp fiber 31 is made of soft and hard fibers mixed with cotton fibers by twisting, and is a special hemp fiber 31 with high strength and low elongation. The soft fibers are one or more of ramie, flax, and lobo hemp, and the hard fibers are one or more of sisal hemp, banana hemp, and pineapple hemp. The soft fibers, hard fibers, and cotton fibers are mixed in a ratio of 5:1:1.5 by weight and twisted into yarn. The soft fibers as the main material can improve the strength of the hemp fiber 31 while keeping the material cost low. The addition of cotton yarn can ensure the spinning effect of the hemp fiber 31 and improve the wear resistance of the hemp fiber 31. The sisal hemp, banana hemp, and pineapple hemp are leaf fibers with coarse and hard cell layers, and are single-cell growth leaf fibers with irregular cross-section and porous cell bundles, which can greatly improve the roughness of the hemp fiber 31 and the tensile strength of the fabric.

[0027] The nylon thread 32 is a high-strength core-spun nylon thread, which uses a polyamide nylon filament as the inner core and is wrapped with natural fibers. The wrapped natural fibers are "viscose silk", which is a man-made cellulose polymer with high tensile strength and good wear resistance.

[0028] The polypropylene woven yarn 33 has the characteristics of high strength, good elasticity, wear resistance, and corrosion resistance, which can significantly improve the crack resistance of the fabric layer 3. In the warp and weft directions of the fabric layer 3, the arrangement of the hemp fiber 31, the nylon thread 32, and the polypropylene woven yarn 33 is 1:1:1, and they are woven into a plain weave structure.

[0029] The first reinforcing layer 2 is provided on the top of the fabric layer 3, which is a cotton fiber fabric layer. The cotton fiber fabric mainly uses cotton cellulose to make cotton yarn, which is processed into cotton yarn before spinning. The cotton fiber yarn as the warp and weft of the cotton fiber fabric can prevent the phenomenon of affecting the process smoothly during spinning. The twist diameter of the cotton yarn is 0.2mm, and the density of the warp and weft of the cotton fiber fabric is 4 roots / cm, which is woven into a plain weave structure. The first reinforcing layer 2 is arranged on the top of the fabric layer 3 and completely covers the fabric layer 3.

[0030] The second reinforcing layer 4 is provided on the bottom of the fabric layer 3, which is a flax fiber fabric layer. The flax fiber fabric mainly uses flax cellulose to make flax fiber yarn, which is used as the warp and weft of the flax fiber fabric. The twist diameter of the flax fiber yarn is 0.3mm, and the density of the warp and weft of the flax fiber fabric is 3 roots / cm, which is woven into a plain weave structure. The flax fiber fabric is hard when dry, but soft when wet. This is because the fiber will swell when affected by water, making the fabric soft. Therefore, the flax fabric will exhibit different properties in dry and wet states.

[0031] The adhesive layer 6 is a hydroxypropyl methyl cellulose colloid solution coating. Specifically, the adhesive layer 6 is arranged between the fabric layer 3 and the first reinforcing layer 2 and the second reinforcing layer 4; the adhesive layer 6 uses a building industry grade hydroxypropyl methyl cellulose colloid solution, the fabric layer 3 is soaked, and then the excess hydroxypropyl methyl cellulose colloid solution on the fabric layer 3 is scraped off using a device with a scraper; then the second reinforcing layer 4, the fabric layer 3 and the first reinforcing layer 2 are sequentially laid on the template; when the hydroxypropyl methyl cellulose colloid solution dries, a layer of thin film with toughness is formed on both sides of the fabric layer 3, and the thin film can penetrate into the first reinforcing layer 2 and the second reinforcing layer 4 respectively, so as to bond the fabric layer 3 with the fiber structures of the two reinforcing layers.

[0032] The tensile layer 5 is arranged at the bottom of the second reinforcing layer 4, and the tensile layer 5 is a plastic woven mesh with apertures made of plastic flat wires. The tensile layer 5 woven by plastic flat wires is divided into 36*36 according to the number of flat wires in the range of 100mm in warp and weft density. The tensile layer 5 is arranged at the bottom of the outermost layer of the geotextile, which can strengthen the tensile strength of the geotextile and bear part of the friction loss between the geotextile and the ground, preventing the fabric structure of the geotextile from being damaged and cracked.

[0033] The PE film layer 1 is arranged at the top of the first reinforcing layer 2. The PE film layer 1 can provide good moisture retention for the geotextile before it is put into use, preventing the hydroxypropyl methyl cellulose colloid solution on the fabric layer 3 from drying too early and becoming hard, so that the geotextile cannot be laid on bare soil.

[0034] A manufacturing method of the anti-cracking geotextile, comprising the steps of:

[0035] S1. Using a weaving device to weave the hemp wire 31, the nylon wire 32 and the polypropylene woven wire 33 into the fabric layer 3, and winding and storing the woven fabric layer 3.

[0036] S2. Dissolving and diluting the hydroxypropyl methyl cellulose powder to prepare a hydroxypropyl methyl cellulose colloid solution, and placing the hydroxypropyl methyl cellulose colloid solution in a soaking pool. The hydroxypropyl methyl cellulose powder is a building industry special hydroxypropyl methyl cellulose (HPMC) raw material produced by Jinzhou Honghai Cellulose Co., Ltd. The hydroxypropyl methyl cellulose powder is placed in a mixing tank and mixed and stirred with 80-90℃ water for 20min. The mixing tank heats the mixture during stirring to maintain the temperature in the tank at 80-90℃. The mass fraction of hydroxypropyl methyl cellulose powder to water is 1:100. After stirring, 100 parts of normal temperature water are added again, and the mixture is slowly stirred to natural cooling to form a viscous liquid.

[0037] S3. Gradually unrolling the fabric layer 3, and as the unrolling proceeds, the unrolled fabric layer 3 is pressed into the immersion tank, the hydroxypropyl methyl cellulose colloidal solution in the immersion tank is used to immerse the fabric layer 3, and then the excess hydroxypropyl methyl cellulose colloidal solution on the fabric layer 3 is scraped into the immersion tank using a scraper, and the fabric layer 3 is re-wound.

[0038] Specifically, the unrolling machine, the winding machine, the pressing roller machine, and the mechanical scraper are used for the immersion processing of the fabric layer 3. The immersion tank is arranged between the unrolling machine and the winding machine, the pressing roller machine and the mechanical scraper are arranged above the immersion tank, and the mechanical scraper is arranged close to the winding machine. The staff places the fabric layer 3 in the form of a roll in step S1 on the unrolling machine, and presses one end of the fabric layer 3 against the roll of the winding machine. The pressing roller of the pressing roller machine is pressed down to press the fabric layer 3 hanging in the air into the immersion tank. As the unrolling machine and the winding machine run, the fabric layer 3 will be soaked in the hydroxypropyl methyl cellulose colloidal solution in the immersion tank. After leaving the immersion tank, the fabric layer 3 is scraped off by the mechanical scraper, so that the front and back surfaces of the fabric layer 3 can be left with hydroxypropyl methyl cellulose colloidal solution. Then the fabric layer 3 is re-wound.

[0039] S4. The tensile layer 5, the second reinforcing layer 4, the fabric layer 3, and the first reinforcing layer 2 are stacked from bottom to top, and are sewn into one whole by using a knitting device to make geotextile.

[0040] S5. The PE film layer 1 is covered on the top of the geotextile by using a film sealing machine to seal the film, and at the same time the winding machine winds the geotextile to make the finished product of geotextile.

[0041] Example 1

[0042] The geotextile is produced according to the above method (wherein the dissolution temperature of the hydroxypropyl methyl cellulose powder in water is 85℃), and three groups of random geotextile products of different batches are taken for product performance testing. The test standard refers to GB / T17638-2017. The longitudinal and transverse breaking strength, the nominal breaking strength corresponding elongation, the bursting strength, the vertical permeability coefficient, and the longitudinal and transverse tear strength of the three groups of geotextile products are tested. The test data of the three groups of geotextile products are calculated to obtain the average value, and the test results in Table 1 are obtained.

[0043] Table 1

[0044] Item Before drying After drying Longitudinal and transverse breaking strength 93.2 kN / m 125.4 kN / m Nominal breaking strength corresponding elongation 57.53％ 53.6％ Bursting strength 13.1 kN 15.8 kN Vertical permeability coefficient 6.12*10"2cm / s 2.24*10"2cm / s Longitudinal and transverse tear strength 1.7 kN 2.1 kN

[0045] Example 2

[0046] S1. The hemp fiber 31, the nylon thread 32, and the polypropylene woven silk 33 are woven into the fabric layer 3 by using a weaving device, and the woven fabric layer 3 is wound and stored.

[0047] S2. Gradually unroll the fabric layer 3, and as the unrolling proceeds, stack the tensile layer 5, the second reinforcing layer 4, the fabric layer 3, and the first reinforcing layer 2 from bottom to top in order, and use the knitting equipment to sew them into one whole, to make the geotextile.

[0048] S5. Use the winding machine to wind the geotextile, to make the geotextile product.

[0049] The geotextile production is carried out according to the above steps, and the difference from Example 1 is that 3 groups of geotextile products of the same batch are taken for product performance testing. The test standards refer to GB / T 17638-2017, and the longitudinal and transverse breaking strength, the nominal breaking strength corresponding elongation, the bursting strength, the vertical permeability coefficient, and the longitudinal and transverse tear strength of the three groups of geotextile products are tested respectively. The test data of the three groups of geotextile products are calculated to obtain the average value, and the test results in Table 2 are obtained as follows.

[0050] Table 2

[0051] Item Test result Longitudinal and transverse breaking strength 85.2 kN / m Nominal breaking strength corresponding elongation 56.33％ Bursting strength 15.3 kN Vertical permeability coefficient 2.39*10"2cm / s Longitudinal and transverse tear strength 1.5 kN

[0052] Comparative Example

[0053] According to the nominal value of high specification geotextile in GB / T 17638-2017, the longitudinal and transverse breaking strength is 40 kN / m, the nominal breaking strength corresponding elongation is 20-100%, the bursting strength is 7 kN, the vertical permeability coefficient is (1.0-9.9)*10^(-1-3) cm / s, and the longitudinal and transverse tear strength is 1.0 kN.

[0054] In summary, the fabric layer 3 made of hemp fiber 31, nylon thread 32 and polypropylene woven silk 33 can greatly improve the tensile strength of the geotextile itself, and serve as the main bearing structure and tensile structure of the geotextile.

[0055] The special hemp fiber 31 of high strength and low elongation type is twisted from soft and hard fibers and cotton fibers, which can greatly improve the strength of the hemp fiber 31 while ensuring the material cost. The addition of cotton thread can well ensure the effect of hemp fiber 31, and ensure the wear resistance of hemp fiber 31. At the cellular level, the leaf fibers of sisal hemp, banana hemp and pineapple hemp are formed by the growth of single cells into irregular porous cell bundles in cross section, which can greatly improve the roughness of the hemp fiber 31, and can enhance the infiltration and gluing effect of the hydroxypropyl methyl cellulose colloid solution in step S3, providing conditions for the film formation and hardening of the hydroxypropyl methyl cellulose colloid solution after drying. The nylon thread 32 is woven in the fabric layer 3 as a weaving material, which can enhance the tensile strength of the fabric layer 3 while improving the wear resistance of the fabric layer 3.

[0056] The first reinforcing layer 2 is a cotton fiber fabric layer woven with plain weave structure, which is arranged on the top of the fabric layer 3 and completely covers the fabric layer 3 to provide top protection for the fabric layer 3 and reduce the pressure. It can enhance the top breaking strength of the geotextile to a certain extent, and can well prevent the fabric layer 3 from being damaged and broken due to excessive pressure in the context of mechanical equipment or material placement.

[0057] The second reinforcing layer 4 is a flax fiber fabric layer woven with plain weave structure, which can enhance the bearing strength of the lower layer of the geotextile, and can prevent the protruding stones in the bare soil from piercing the geotextile during the laying process, thereby further improving the anti-cracking performance of the geotextile. On the other hand, the flax fiber will make the flax fiber fabric exhibit different characteristics in dry and wet states. When dry, it is relatively hard, and when soaked, it becomes soft. When the geotextile is initially laid, the hydroxypropyl methyl cellulose colloid solution on the fabric layer 3 is not completely dried, making the laying of the geotextile very convenient and easy to operate. When in a dry state, the hardened flax fiber fabric can provide strong tensile and anti-cracking properties.

[0058] When the geotextile is used to cover the bare soil, the hydroxypropyl methyl cellulose colloid solution on the fabric layer 3 will dry after a period of time, and the hydroxypropyl methyl cellulose component will solidify into a film on both sides of the fabric layer 3, forming adhesive layers 6 on both sides of the fabric layer 3. Due to the penetration of the hydroxypropyl methyl cellulose component into the first reinforcing layer 2 and the second reinforcing layer 4, the structure of the geotextile is more stable. At the same time, due to the irregular porous cell bundle structure of the leaf fiber in the hemp fiber 31, the insoluble hydroxypropyl methyl cellulose solidification under normal temperature can be trapped under small rainwater erosion. The loss of hydroxypropyl methyl cellulose is minimized.

[0059] The tensile layer 5 made of plastic flat wire with pores is arranged at the bottom of the geotextile, which can enhance the tensile strength of the geotextile while bearing part of the friction loss with the ground. It can prevent the internal structure of the geotextile from being damaged and broken due to friction with the bare stones on the ground. The PE film layer 1 can keep the geotextile moist before use, prevent the hydroxypropyl methyl cellulose colloid solution on the fabric layer 3 from drying too early and hardening, and make it difficult to lay on the bare soil.

[0060] Thus, in actual use, the engineering team can use the local geotextile to cover the bare soil. When covering, the geotextile roll is directly unfolded, which is convenient to use. The chemical properties of the material itself enable the anti-cracking geotextile to harden over time. The hardened geotextile has very strong anti-cracking and anti-tensile properties. The laying construction should be selected on a dry day. When laying, the PE film layer 1 is upward. After the construction personnel uncover the PE film layer 1, the geotextile gradually dries within 1-3 hours, and the laying of the geotextile is completed. Because hydroxypropyl methyl cellulose is almost insoluble in water at room temperature, and it has excellent anti-ultraviolet ability, which makes the dry geotextile extremely small in loss during use. It can prevent the phenomenon of bare soil dusting, and has excellent anti-tensile and anti-cracking properties, which can withstand the daily walking of construction personnel, equipment storage, and even truck rolling, to ensure the construction. The local geotextile can be recycled at the end of the project and used for road paving and landscaping soil construction. The hardened geotextile can be stacked and transferred by the construction personnel. After laying on the roadbed construction site or the landscaping base construction site, the mobile high-temperature steam generator is used to steam the geotextile to soften it and make it adhere to the roadbed, completing the secondary use of the geotextile. The secondary used geotextile can still maintain good anti-tensile and anti-cracking properties.

[0061] Of course, the present application can have other various embodiments. Those skilled in the art can make various corresponding changes and modifications according to the present application without departing from the spirit and essence of the present application. However, these corresponding changes and modifications should all belong to the protection scope of the claims attached to the present application.

Claims

1. A crack-resistant geotextile, characterized in that, It includes a fabric layer (3), the top and bottom of the fabric layer (3) are respectively provided with a first reinforcing layer (2) and a second reinforcing layer (4), and an adhesive layer (6) is provided between the fabric layer (3) and the first reinforcing layer (2) and the second reinforcing layer (4); a tensile layer (5) is provided at the bottom of the second reinforcing layer (4), and a PE film layer (1) is provided at the top of the first reinforcing layer (2). The adhesive layer (6) is a hydroxypropyl methylcellulose colloidal solution coating; The fabric layer (3) is made of hemp fiber (31), nylon thread (32) and polypropylene braided yarn (33); The hemp fiber thread (31) is made by mixing soft fibers, hard fibers and cotton fibers; the soft fibers include one or more of ramie, flax, and Apocynum venetum, and the hard fibers include one or more of sisal, abaca, and pineapple hemp. The nylon thread (32) is a core-spun nylon thread, wherein the core-spun nylon thread uses polyamide nylon filaments as the inner core and natural fibers are wrapped around the inner core. The first reinforcing layer (2) is a cotton fiber fabric layer, and the second reinforcing layer (4) is a flax fiber fabric layer.

2. The crack-resistant geotextile according to claim 1, characterized in that, The ratio of soft fiber, hard fiber and cotton fiber is 5:1:1.

5.

3. The crack-resistant geotextile according to claim 1, characterized in that, The hemp fiber (31), nylon thread (32) and polypropylene braided filament (33) in the fabric layer (3) are arranged in a 1:1:1 ratio in the warp and weft directions, and the fabric layer (3) has a plain weave structure.

4. A method for manufacturing a crack-resistant geotextile, characterized in that, The method for manufacturing the crack-resistant geotextile according to any one of claims 1-3 includes the following steps: S1. The hemp fiber (31), nylon thread (32) and polypropylene braided filament (33) are braided into a fabric layer (3) using a weaving device, and the woven fabric layer (3) is wound and stored. S2. Dissolve and dilute the hydroxypropyl methylcellulose powder to prepare a hydroxypropyl methylcellulose colloidal solution, and place the hydroxypropyl methylcellulose colloidal solution into an immersion tank; S3. Gradually unwind the fabric layer (3), pressing the fabric layer (3) into the impregnation tank during the process. The hydroxypropyl methylcellulose colloidal solution in the impregnation tank impregnates the fabric layer (3). Then, a scraper is used to scrape the excess hydroxypropyl methylcellulose colloidal solution on the fabric layer (3) into the impregnation tank, and the fabric layer (3) is rewound. S4. The tensile layer (5), the second reinforcing layer (4), the fabric layer (3) and the first reinforcing layer (2) are stacked from bottom to top and sewn together as a whole using a knitting device to make a geotextile; S5. Use a sealing machine to cover the top of the geotextile with the PE film layer (1), and at the same time, use a winding machine to wind the geotextile to make the finished geotextile.

5. The method for manufacturing the crack-resistant geotextile according to claim 4, characterized in that, The specific steps for dissolving the hydroxypropyl methylcellulose powder in step S2 are as follows: the hydroxypropyl methylcellulose powder is placed in a mixing tank and mixed with water at 80-90°C for 20 minutes. During the mixing process, the temperature of the mixing tank is maintained at 80-90°C. The mass ratio of the hydroxypropyl methylcellulose powder to the water is 1:

100. After the mixing is completed, 100 parts of room temperature water are added again and the mixture is slowly stirred until it cools down naturally.

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