Waterproof material based on deep and large shaft and preparation method and process thereof

Abstract

The application relates to the technical field of waterproof materials, in particular to a waterproof material based on a deep and large vertical shaft and a preparation method and process thereof. The waterproof material is composed of a first mixture and a second mixture; the first mixture comprises 5-10 parts of cement, 4-8 parts of lime, 20-40 parts of sand and 15-30 parts of water; and the second mixture comprises 10-15 parts of polymer coating, 4-8 parts of a toughening agent, 1-3 parts of a solidification promoting agent and 2-4 parts of water. The waterproof material based on the deep and large vertical shaft and the preparation method and process thereof can form a better waterproof effect on the outer side of the deep and large vertical shaft when the improved waterproof material is used.

Description

Technical Field

[0001] This invention relates to the field of waterproof materials technology, and in particular to waterproof materials based on deep vertical shafts, as well as their preparation methods and processes. Background Technology

[0002] In typical urban subway shafts, underground foundation pits, and small mines, manual bottom unloading of slag or heavy objects is often performed using a bucket hoist. This method is relatively traditional and has several problems: first, manual unloading is very slow and takes a long time; second, the heavy load makes opening the bucket's bottom plate difficult, resulting in high labor intensity and consuming a large amount of manpower; and third, manual unloading exposes operators directly to the danger zone of working at height, posing a high safety risk.

[0003] For example, the Chongqing Station to Houbao Station section starts at Caiyuanba Railway Station in Yuzhong District and ends near the intersection of Nanbin Road and Hongsheng Road in Nan'an District. The line passes through Caiyuanba Interchange, Zourong Park, Shibanpo Interchange, Changjiang Binjiang Road, the Yangtze River, and Nanbin Road. The right-line tunnel runs from YCK35+358.497 to YCK38+548.3, with a total tunnel length of 3204.245m and a right-line long chain length of 14.442m. The left-line tunnel runs from ZCK35+181.497 to ZCK38+548.3, with a total tunnel length of 3420.138m and a left-line long chain length of 53.335m. Both lines are single-track, single-bore structures. The tunnels traverse the city's core area and the Yangtze River, are relatively deep, and pass through areas with numerous surface buildings.

[0004] During the construction of deep vertical shafts, due to the large excavation depth, high earth pressure, and high groundwater head, engineering accidents such as water leakage often occur. During the construction of deep vertical shafts, a waterproof layer is added to prevent the intrusion of water or other media to increase the service life of the shaft. After the waterproof layer is established, it is necessary to regularly inspect and repair any damaged waterproof layer.

[0005] Therefore, this paper designs waterproof materials for deep vertical shafts, as well as their preparation methods and processes. It designs a waterproof material that can form a new protective layer for the vertical shaft after the waterproof layer is damaged, thus providing a better waterproof effect and offering another technical solution to the above-mentioned technical problems. Summary of the Invention

[0006] Therefore, it is necessary to provide waterproof materials for deep vertical shafts and their preparation methods and processes to address the aforementioned technical problems.

[0007] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0008] Waterproofing material based on deep vertical shafts, the waterproofing material is composed of a first mixture and a second mixture;

[0009] The first mixture includes cement, lime, sand, and water;

[0010] The second mixture includes a polymer coating, a toughening agent, a curing accelerator, and water.

[0011] As a preferred embodiment of the waterproof material based on deep vertical shafts provided by the present invention, the first mixture includes 5-10 parts cement, 4-8 parts lime, 20-40 parts sand and 15-30 parts water.

[0012] As a preferred embodiment of the waterproof material based on deep vertical shafts provided by the present invention, the first mixture includes 10 parts cement, 8 parts lime, 40 parts sand and 30 parts water.

[0013] As a preferred embodiment of the waterproof material based on deep vertical shafts provided by the present invention, the second mixture includes 10-15 parts of polymer coating, 4-8 parts of toughening agent, 1-3 parts of curing accelerator and 2-4 parts of water.

[0014] As a preferred embodiment of the waterproof material based on deep vertical shafts provided by the present invention, the second mixture comprises 15 parts polymer coating, 8 parts toughening agent, 3 parts curing accelerator and 4 parts water.

[0015] As a preferred embodiment of the waterproof material based on deep vertical shafts provided by the present invention, the polymer coating is one or more of polyurethane coating, polyacrylate coating, polyethylene coating, polyvinyl chloride coating and silicone rubber coating, the toughening agent is polyether-modified polyamide or polyester modifier, and the curing accelerator is infrared absorber.

[0016] The preparation method of waterproof material based on deep vertical shafts, used for any of the above, includes the following steps:

[0017] S1: Mix 5 parts cement, 4 parts lime, 20 parts sand and 15 parts water evenly to form the first mixture;

[0018] S2: Mix 10 parts polymer coating, 4 parts toughening agent and 2 parts water with a mixer until homogeneous, then add 1 part curing accelerator and mix again with a mixer to form a second mixture;

[0019] S3: Pour the first mixture obtained in step S1 and the second mixture obtained in step S2 into a mixer and mix them evenly to form a waterproof material.

[0020] The preparation process of waterproof materials based on deep vertical shafts, used for any of the above, involves the following steps:

[0021] A: Mix cement, lime, sand and water evenly to form the first mixture;

[0022] B: Mix the polymer coating, toughening agent, curing accelerator and water to form a second mixture;

[0023] C: Pour the first mixture and the second mixture into the mixer at a ratio of 1:0.6~0.8 and mix them evenly to form a waterproof material;

[0024] D: Apply, spray, or cover the waterproof material formed in step C evenly onto the inner wall or base of the deep vertical shaft;

[0025] E: After step D, seal the joints of the inner wall of the shaft with waterproof adhesive;

[0026] F: After step E is completed, conduct a strict waterproofing inspection; check for leaks, seepage, or other problems on the inner wall of the shaft, as well as the quality of the waterproofing material application.

[0027] It is clear without a doubt that the technical solution described above in this application can solve the technical problem that this application aims to address.

[0028] Meanwhile, through the above technical solutions, the present invention has at least the following beneficial effects:

[0029] The waterproof material, preparation method, and process based on deep vertical shafts provided by this invention improves the waterproof material and its preparation method and process, enabling the improved waterproof material to form a better waterproof effect on the outside of deep vertical shafts during use. Furthermore, it can provide better waterproof protection after the existing waterproof layer on the outside of the deep vertical shaft is damaged, thereby forming a double layer with the existing waterproof layer to prevent the intrusion of water or other media. Attached Figure Description

[0030] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 This is a flowchart of the preparation method of the waterproof material of the present invention;

[0032] Figure 2 This is a process flow diagram of the waterproof material of the present invention. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0034] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0035] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0036] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0037] Example 1

[0038] The waterproofing material based on deep vertical shafts consists of a first mixture and a second mixture;

[0039] In this embodiment, the ratio of the first mixture to the second mixture is 1:0.6.

[0040] The first mixture consists of 5-10 parts cement, 4-8 parts lime, 20-40 parts sand, and 15-30 parts water;

[0041] Preferably, the first mixture comprises 5 parts cement, 4 parts lime, 20 parts sand and 15 parts water;

[0042] Preferably, the first mixture comprises 10 parts cement, 8 parts lime, 40 parts sand and 30 parts water;

[0043] The second mixture includes 10-15 parts polymer coating, 4-8 parts toughening agent, 1-3 parts curing accelerator and 2-4 parts water;

[0044] Preferably, the second mixture comprises 10 parts polymer coating, 4 parts toughening agent, 1 part curing accelerator, and 2 parts water;

[0045] Preferably, the second mixture comprises 15 parts polymer coating, 8 parts toughening agent, 3 parts curing accelerator and 4 parts water.

[0046] The polymer coating is one or more of polyurethane coatings, polyacrylate coatings, polyethylene coatings, polyvinyl chloride coatings, and silicone rubber coatings;

[0047] Among them, polyurethane coatings: Polyurethane coatings have good elasticity, impermeability, and abrasion resistance, forming a tough waterproof layer. Polyurethane coatings are available in two-component and one-component types, allowing for selection based on actual needs. Polyacrylate coatings: Polyacrylate coatings have good water resistance, weather resistance, and impact resistance, suitable for waterproofing various substrates. Polyacrylate coatings are usually water-based and have excellent environmental performance. Polyethylene coatings: Polyethylene coatings have high elasticity, crack resistance, and impermeability, suitable for waterproofing projects exposed to harsh environments for extended periods. Polyethylene coatings are available in solvent-based and solvent-free types, offering convenient application and good adhesion. Polyvinyl chloride (PVC) coatings: PVC coatings have excellent chemical corrosion resistance, abrasion resistance, and waterproofing properties. PVC coatings are commonly used in industrial corrosion protection and building waterproofing. Silicone rubber coatings: Silicone rubber coatings have excellent high and low temperature resistance, aging resistance, and waterproofing properties, suitable for waterproofing projects in high-temperature and cold regions.

[0048] The toughening agent is one or more of the following: elastomer particles, elastomer modifiers, toughening cellulose, softeners, and balancing additives;

[0049] The elastomer particles are made of nitrile rubber or acrylic rubber.

[0050] The elastomer modifier is a polyether-modified polyamide or a polyester modifier;

[0051] Toughening cellulose is a cellulose ether or cellulose ester. By increasing the amount of toughening cellulose, a fibrous structure can be formed in the coating, thereby improving the toughness and crack resistance of the coating.

[0052] The softener is a phthalate compound, which increases the softness and plasticity of the coating and improves its crack resistance.

[0053] The balancing additives are modified silanes or aminosilanes, which allow the addition of balancing additives to form a network structure in the coating, thereby increasing the elasticity and crack resistance of the coating.

[0054] The curing accelerator is either an infrared absorber or a polyanhydride compound. When the curing accelerator is an infrared absorber, it absorbs infrared radiation, generating localized heating and raising the temperature of the coating, thereby promoting the activation and reaction of the curing agent. Specifically, the infrared absorber is carbon black, which is used in conjunction with a prepared infrared radiation device to provide sufficient infrared radiation energy. By adjusting the power of the radiation device and the infrared radiation time, the curing speed and effect of the coating can be controlled. Infrared curing agents can accelerate the curing of coatings into a film in a shorter time, resulting in high strength and high wear resistance. When the curing accelerator is a polyanhydride compound, it combines with functional groups in the coating to form a cross-linked structure, improving the hardness and strength of the coating film.

[0055] Example 2

[0056] refer to Figure 1 Based on the above-described Example 1, the preparation method is disclosed, and the steps are as follows:

[0057] S1: Mix 5 parts cement, 4 parts lime, 20 parts sand and 15 parts water evenly, and stir at 200 r / min for 20-40 minutes at room temperature to form the first mixture;

[0058] Preferably, 10 parts cement, 8 parts lime, 40 parts sand and 30 parts water are mixed evenly and stirred at 200 r / min for 20-40 minutes at room temperature to form the first mixture;

[0059] S2: Mix 10 parts polymer coating, 4 parts toughening agent and 2 parts water with a stirrer at 300 r / min for 20-40 minutes until homogeneous. Then add 1 part curing accelerator and stir again with a stirrer at 300 r / min for 20-40 minutes until the entire mixture is homogeneous and forms the second mixture.

[0060] Preferably, 15 parts of polymer coating, 8 parts of toughening agent and 4 parts of water are stirred evenly by stirring at 300 r / min for 20-40 minutes. Then, 3 parts of curing accelerator are added and stirred evenly again by stirring at 300 r / min for 20-40 minutes until the entire mixture reaches a uniform state, forming the second mixture.

[0061] Preferably, the polymer coating is one or more of polyurethane coating, polyacrylate coating, polyethylene coating, polyvinyl chloride coating and silicone rubber coating, the toughening agent is polyether-modified polyamide or polyester modifier, and the curing accelerator is infrared absorber.

[0062] S3: Pour the first mixture obtained in step S1 and the second mixture obtained in step S2 into a mixer and mix them evenly. Rotate the mixer at 100r / min for 2-3 hours to form a waterproof material.

[0063] S4: Apply the waterproof material obtained in step S3 evenly by brushing, spraying, or covering it onto the inner wall or substrate of the deep vertical shaft. Wait for the waterproof material to solidify and form a waterproof effect. It can also provide infrared radiation to the infrared absorber through an infrared radiation device for infrared radiation absorption. The infrared absorber absorbs infrared radiation, generates local heating, and increases the temperature of the coating, thereby promoting the activation and reaction of the curing agent. By adjusting the power of the infrared radiation device and the infrared radiation time, the curing speed and effect of the coating can be controlled.

[0064] Example 3

[0065] refer to Figure 2 Based on the above-described Example 1, the preparation process is disclosed, and the steps are as follows:

[0066] A: Mix cement, lime, sand and water evenly to form the first mixture;

[0067] B: Mix the polymer coating, toughening agent, curing accelerator and water to form a second mixture;

[0068] C: Pour the first and second mixtures into a mixer and mix them evenly to form a waterproof material;

[0069] D: Apply, spray, or cover the waterproof material formed in step C evenly to the inner wall or substrate of the deep vertical shaft; ensure uniformity and integrity during construction, and avoid missed areas, excessive thickness, or insufficient thickness; avoid hollow areas, brush marks, and ripples during construction; depending on the characteristics of the waterproof material, multiple layers may be required, and each layer should be allowed to dry completely between layers.

[0070] E: After step D, seal the joints of the inner wall of the shaft with waterproof adhesive to ensure airtightness; at the same time, fill the bottom of the shaft with a certain thickness of waterproof sealant to ensure the waterproof effect at the bottom of the shaft, and wait for the waterproof material to solidify and form a waterproof effect.

[0071] F: After step E is completed, conduct a strict waterproofing inspection; check for leaks, seepage, or other problems on the inner wall of the shaft, as well as the quality of the waterproofing material application;

[0072] G: After the construction of the vertical shaft waterproofing material is completed, corresponding protective measures are required; such as protecting the waterproof layer, setting up markings and warning signs, and daily maintenance and management of the waterproofing material.

[0073] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A waterproof material for deep vertical shafts, characterized in that, The waterproof material is composed of a first mixture and a second mixture; The first mixture includes cement, lime, sand, and water; The first mixture comprises 5-10 parts cement, 4-8 parts lime, 20-40 parts sand and 15-30 parts water; The second mixture includes a polymer coating, a toughening agent, a curing accelerator, and water; The second mixture comprises 10-15 parts polymer coating, 4-8 parts toughening agent, 1-3 parts curing accelerator and 2-4 parts water; The polymer coating is one or more of polyurethane coating, polyacrylate coating, polyethylene coating, polyvinyl chloride coating and silicone rubber coating, the toughening agent is polyether-modified polyamide or polyester modifier, and the curing accelerator is infrared absorber.

2. The waterproof material based on deep vertical shafts according to claim 1, characterized in that, The first mixture comprises 10 parts cement, 8 parts lime, 40 parts sand and 30 parts water.

3. The waterproof material based on deep vertical shafts according to claim 1, characterized in that, The second mixture comprises 15 parts polymer coating, 8 parts toughening agent, 3 parts curing accelerator and 4 parts water.

4. A method for preparing a waterproof material based on deep vertical shafts, used in the waterproof material based on deep vertical shafts according to any one of claims 1-3, characterized in that, The steps are as follows: S1: Mix 5 parts cement, 4 parts lime, 20 parts sand and 15 parts water evenly to form the first mixture; S2: Mix 10 parts polymer coating, 4 parts toughening agent and 2 parts water with a mixer until homogeneous, then add 1 part curing accelerator and mix again with a mixer to form a second mixture; S3: Pour the first mixture obtained in step S1 and the second mixture obtained in step S2 into a mixer and mix them evenly to form a waterproof material.

5. A preparation process for waterproof materials based on deep vertical shafts, used in the waterproof materials based on deep vertical shafts according to any one of claims 1-3, characterized in that, The steps are as follows: A: Mix cement, lime, sand and water evenly to form the first mixture; B: Mix the polymer coating, toughening agent, curing accelerator and water to form a second mixture; C: Pour the first and second mixtures into a mixer and mix them evenly to form a waterproof material; D: Apply, spray, or cover the waterproof material formed in step C evenly onto the inner wall or base of the deep vertical shaft; E: After step D, seal the joints of the inner wall of the shaft with waterproof adhesive; F: After step E is completed, a strict waterproofing inspection shall be carried out.

Images