CN112854272A - Preparation method of underground engineering wall ground seepage drainage system - Google Patents

Preparation method of underground engineering wall ground seepage drainage system Download PDF

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CN112854272A
CN112854272A CN202110103437.8A CN202110103437A CN112854272A CN 112854272 A CN112854272 A CN 112854272A CN 202110103437 A CN202110103437 A CN 202110103437A CN 112854272 A CN112854272 A CN 112854272A
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wall
following
steps
water
mortar
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CN112854272B (en
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邓跃全
王姚
杨威
吴婷
郭李琴
吴昊
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Southwest University of Science and Technology
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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D19/00—Keeping dry foundation sites or other areas in the ground
    • E02D19/06—Restraining of underground water
    • E02D19/12—Restraining of underground water by damming or interrupting the passage of underground water
    • E02D19/18—Restraining of underground water by damming or interrupting the passage of underground water by making use of sealing aprons, e.g. diaphragms made from bituminous or clay material
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D19/00—Keeping dry foundation sites or other areas in the ground
    • E02D19/06—Restraining of underground water
    • E02D19/12—Restraining of underground water by damming or interrupting the passage of underground water
    • E02D19/18—Restraining of underground water by damming or interrupting the passage of underground water by making use of sealing aprons, e.g. diaphragms made from bituminous or clay material
    • E02D19/185—Joints between sheets constituting the sealing aprons
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D19/00—Keeping dry foundation sites or other areas in the ground
    • E02D19/06—Restraining of underground water
    • E02D19/12—Restraining of underground water by damming or interrupting the passage of underground water
    • E02D19/20—Restraining of underground water by damming or interrupting the passage of underground water by displacing the water, e.g. by compressed air
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00—Independent underground or underwater structures; Retaining walls
    • E02D29/045—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00—Independent underground or underwater structures; Retaining walls
    • E02D29/16—Arrangement or construction of joints in foundation structures
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
    • E02D31/02—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against ground humidity or ground water

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Hydrology & Water Resources (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)

Abstract

The invention discloses a preparation method of a ground seepage drainage system of an underground engineering wall, which is characterized by comprising the following steps: the method comprises the following steps of preparing permeable mortar for underground engineering wall surfaces, preparing multilayer plastering waterproof mortar for underground engineering, preparing odorless polyvinyl alcohol cement waterproof mortar for underground engineering wall surfaces, calculating the thickness of wall corners of permeable mortar layers of the wall surfaces, constructing permeable mortar layers, constructing multilayer plastering waterproof mortar layers, constructing odorless polyvinyl alcohol cement waterproof mortar, and the like. The invention adopts the dredging method, solves the problems of water seepage and drainage of the underground engineering wall surface by treating both symptoms and root causes, has low cost, simple process, good effect, safety and environmental protection, and is suitable for national defense, civil defense, underground mines and the like to solve the water seepage problem of the underground engineering wall surface and the ground.

Description

Preparation method of underground engineering wall ground seepage drainage system
Technical Field
The invention belongs to a ground seepage drainage system of an underground engineering wall, and relates to a preparation method of the ground seepage drainage system of the underground engineering wall. The water seepage control device is particularly suitable for solving the water seepage problem of underground engineering wall surfaces and ground surfaces in national defense, civil defense, underground mines and the like.
Background
The underground construction engineering is deep underground, although a retaining wall is arranged, the water seepage problem of the wall surface and the ground of the underground engineering is easily caused due to insufficient water Wenshun geology and the thickness of the retaining wall, the wall body is damaged, the attractiveness of the wall body is influenced, and the communication and ventilation facilities of the underground engineering are influenced and damaged. Pervious concrete is a means for discharging urban ponding water which can be thinned, and a sponge city is built by the pervious concrete, urban waterlogging is eliminated, the water content of the ground surface is increased, the pervious concrete is composed of aggregate, cement, water and the like, single-particle-grade or discontinuous-particle-grade coarse aggregate is mostly adopted as a framework, a thin-layer cement slurry is coated on the surface of the coarse aggregate to form a porous honeycomb structure with uniformly distributed pores, the pervious concrete generally adopts large-particle-size aggregate (the particle size range is more than 4.75mm), the surface smoothness is poor, a layer of pervious mortar with smaller particle size of the aggregate needs to be laid on the surface of the pervious concrete to smooth the road surface (or the surface) and play a role in beauty, CN106673487A discloses a pervious mortar stabilizer for the sponge city and a preparation method thereof, and comprises water-soluble polymer emulsion, coupling agent and water, CN106747019A discloses a pervious epoxy resin polymer mortar for the sponge city and a pervious road surface prepared by the same, CN107032687A discloses 'high elastic modulus permeable environment-friendly mortar for sponge city produced by construction waste and its preparation method', CN106192666A discloses 'permeable mortar and permeable pavement made of permeable mortar', aggregates such as construction waste sand, machine-made sand, river sand, etc. are adopted, the particle size is controlled to be 10 mm-30 mm, the used bonding materials include cement, macromolecular emulsion, epoxy resin, etc., additives such as reinforcing fiber, concrete admixture, etc. are generally added, and the permeable mortar is generally used on the surface layer of permeable concrete, and the thickness is 10 mm-15 mm. The existing permeable mortar is generally used for urban pavements, squares and the like, is large in thickness, uses aggregate with large particle size, is generally more than 10mm, has high water permeability, can meet the requirement of large rainwater permeability, but is large in thickness, and underground engineering wall surfaces have variable water permeability conditions, are generally small in water permeability and also have the requirement of integral wall surface flatness, so that a permeable layer with small water permeability and low thickness is required, and a special permeable material needs to be prepared.
The waterproof mortar is a rigid waterproof material, is mainly used for plastering underground engineering, water storage structures and floor (ground) surfaces, and has good weather resistance, durability, impermeability, compactness, high bonding force and strong waterproof effect. In the prior art, three waterproof mortars used as waterproof layers of waterproof engineering are (1) rigid multilayer plastering cement mortar, which is generally prepared by cement paste or mortar consisting of cement and aggregates with the particle size of 1-3 mm, and 4-5 layers are needed by alternately plastering, so that the waterproof mortar is commonly called a multilayer plastering method and has the characteristics of low cost and simple formula and construction; (2) the waterproof mortar doped with the waterproof agent is characterized in that a cement mortar waterproof layer is formed by adding chloride metal salt, stearic acid metal soap and water glass alum waterproof agents, and the water glass alum waterproof agent has the functions of accelerating and quickly setting and is generally used along with stirring; (3) the polymer cement waterproof mortar is prepared by taking cement, fine aggregate and polymer dispersoid as cementing materials, common polymers comprise rubber latex, resin emulsion, epoxy resin, unsaturated polyester and the like, and the polymer cement waterproof mortar has the advantages of good waterproof performance, good flexibility, certain elasticity and crack resistance, and common polymers have certain volatile odor substances.
In summary, the prior art method for water seepage and drainage of the underground engineering wall and the ground mainly has the following defects and shortcomings: (1) aiming at the built underground engineering, a good method for solving the problems of wall and ground water seepage and drainage is lacked; (2) the existing permeable mortar aggregate for urban ground has large particle size and thickness, is not suitable for underground engineering conditions, and needs to be prepared with special permeable materials in a targeted manner; (3) underground engineering is airtight and airtight, organic polymer materials such as rubber latex, resin emulsion, epoxy resin, unsaturated polyester and the like generally have large smell and relatively large volatile organic matters, are difficult to discharge from the underground engineering, and a special waterproof and waterproof layer prepared from an odor-free environment-friendly organic material is needed; (4) the rigid multi-layer plastering cement mortar needs 4 to 5 layers of construction, so that the labor is more, and the waterproof effect is not as good as that of the organic and inorganic composite material.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a preparation method of a ground seepage drainage system of an underground engineering wall; the invention takes cement, sand stone, solid defoaming agent, cellulose thickener and lignocellulose reinforced material as raw materials, prepares permeable mortar and permeable concrete for special use of underground engineering wall and ground water seepage, and is used for preparing a water seepage layer to form a water seepage channel, and then a layer of special environment-friendly waterproof mortar with polyvinyl alcohol group is made on the permeable mortar layer to isolate water seepage and penetrate out of the wall and the ground so as to ensure the water drainage requirement. The invention is particularly suitable for solving the problem of water seepage of underground engineering wall surfaces and ground surfaces, is ecological and environment-friendly, has simple process, low cost and good effect, and has wide application prospect in the field of underground engineering.
The content of the invention is as follows: a preparation method of a ground seepage drainage system of an underground engineering wall is characterized by comprising the following steps:
a. preparing the underground engineering wall surface water-permeable mortar:
the wall surface water-permeable mortar comprises the following components in percentage by mass:
10 to 39 percent of cement (ordinary 325# or 425# Portland cement);
60 to 89 percent of river sand, wherein the grain diameter range of the river sand is 3 to 5 mm;
0.05 to 0.2 percent of solid defoaming agent (production enterprises comprise Federal fine chemical industry Co., Ltd., B-031, etc., Defeng defoaming agent Co., Ltd., DF-230, etc., Wan New Material Co., Ltd., W-435, etc., of Guangzhou);
0.05 to 0.35 percent of cellulose thickening agent (the cellulose thickening agent is hydroxypropyl cellulose ether or carboxymethyl cellulose or a mixture of the two) (hydroxypropyl cellulose ether: the production enterprises comprise Shandong Gomais chemical company Limited, MS-400 type and the like, Wan New Material chemical company Limited in Guangzhou city, R-671 type, Runku City Runda chemical company Limited, HT-E type and the like) (carboxymethyl cellulose: the production enterprises comprise Wan New Material chemical company Limited in Guangzhou city, R-696 type, Runku City North chemical company Limited, IL8 type and the like, Yibo chemical company Limited in Runku city, HT-1 type and the like);
0.1 to 0.5 percent of lignocellulose (which is a fiber reinforced material) (the production enterprises comprise Shandong Fuying biological science and technology limited company, FY type, Shandong Fuying biological science and technology limited company, 006 type, Gallery Jiwei glue industry limited company, JW type);
the preparation and use method of the wall surface permeable mortar comprises the following steps:
the method comprises the following steps: the preparation method comprises the following steps: adding cement and dried river sand in a dry powder mortar mixer, sequentially adding a solid defoaming agent, a cellulose thickener and lignocellulose, uniformly stirring, and sealing and packaging to obtain a component A; the using method comprises the following steps: adding a proper amount of water into the component A, uniformly stirring, adding a proper amount of water, stirring to a state suitable for construction, and constructing by adopting a blade coating or spraying mode;
b. preparing the multilayer plastering waterproof mortar for the underground engineering:
the multi-layer plastering waterproof mortar comprises the following components in percentage by mass:
15% -44% of cement (ordinary 325# or 425# Portland cement);
55 to 84 percent of fine sand, wherein the particle size range of the fine sand is 1 to 3 mm;
0.05 to 0.2 percent of solid defoaming agent (production enterprises comprise Federal fine chemical industry Co., Ltd., B-031, etc., Defeng defoaming agent Co., Ltd., DF-230, etc., Wan New Material Co., Ltd., W-435, etc., of Guangzhou);
0.05 to 0.35 percent of cellulose thickening agent (the cellulose thickening agent is hydroxypropyl cellulose ether or carboxymethyl cellulose or a mixture thereof) (hydroxypropyl cellulose ether: a production enterprise comprises Shandong Gomais chemical company Limited, MS-400 type and the like, Wan New Material company Limited in Guangzhou city, R-671 type, Runku City Runda chemical company Limited, HT-E type and the like) (carboxymethyl cellulose: a production enterprise comprises Wan New Material company Limited in Guangzhou city, R-696 type, Runku City North chemical company Limited, IL8 type and the like, Yibo chemical company Limited in Runku city, HT-1 type and the like);
0.1 to 0.5 percent of lignocellulose (which is a fiber reinforced material) (the production enterprises comprise Shandong Fuying biological science and technology limited company, FY type, Shandong Fuying biological science and technology limited company, 006 type, Gallery Jiwei glue industry limited company, JW type);
the preparation and application method of the multilayer plastering waterproof mortar comprises the following steps:
the method comprises the following steps: the preparation method comprises the following steps: adding cement and dried fine sand in a dry powder mortar mixer, sequentially adding a solid defoaming agent, a cellulose thickener and lignocellulose, uniformly stirring, and sealing and packaging to obtain a component A dry mixture; the using method comprises the following steps: adding a proper amount of water into the component A, uniformly stirring, adding a proper amount of water, stirring to a state suitable for construction, and constructing by adopting a blade coating or spraying mode;
c. preparing the underground engineering wall ground odor-free polyvinyl alcohol cement waterproof neat paste:
the odorless polyvinyl alcohol cement waterproof neat paste comprises the following components in percentage by mass:
40 to 84 percent of cement (ordinary 325# or 425# Portland cement);
15 to 59 percent of polyvinyl alcohol hydrosol (polyvinyl alcohol: the production enterprises comprise Shanghai Meimengjia chemical engineering Co., Ltd., model 2488; Shanghai Hu industry Co., Ltd., model 2499; Guangdong Federal Fine chemical industry Co., Ltd., model C-150);
0.05 to 0.2 percent of solid defoaming agent (production enterprises comprise Federal fine chemical industry Co., Ltd., B-031, etc., Defeng defoaming agent Co., Ltd., DF-230, etc., Wan New Material Co., Ltd., W-435, etc., of Guangzhou);
0.05 to 0.35 percent of cellulose thickening agent (the cellulose thickening agent is hydroxypropyl cellulose ether or carboxymethyl cellulose or a mixture thereof) (hydroxypropyl cellulose ether: a production enterprise comprises Shandong Gomais chemical company Limited, MS-400 type and the like, Wan New Material company Limited in Guangzhou city, R-671 type, Runku City Runda chemical company Limited, HT-E type and the like) (carboxymethyl cellulose: a production enterprise comprises Wan New Material company Limited in Guangzhou city, R-696 type, Runku City North chemical company Limited, IL8 type and the like, Yibo chemical company Limited in Runku city, HT-1 type and the like);
0.1 to 0.5 percent of lignocellulose (which is a fiber reinforced material) (the production enterprises comprise Shandong Fuying biological science and technology limited company, FY type, Shandong Fuying biological science and technology limited company, 006 type, Gallery Jiwei glue industry limited company, JW type).
Preparation of polyvinyl alcohol hydrosol: adding 1 part by mass of polyvinyl alcohol into 18 parts by mass of water, heating in a water bath to 85-95 ℃, and obtaining polyvinyl alcohol hydrosol after the solution is in a transparent state;
the preparation and use method of the odorless polyvinyl alcohol cement waterproof neat paste comprises the following steps:
the method comprises the following steps: the preparation method comprises the following steps: adding cement into a dry powder mortar mixer, sequentially adding a solid defoaming agent, a cellulose thickener and lignocellulose, uniformly stirring, and sealing and packaging to obtain a component A; the using method comprises the following steps: adding the prepared polyvinyl alcohol hydrosol into the component A, uniformly stirring, adding (a proper amount of) water, stirring to a state suitable for construction, and constructing by adopting a blade coating or spraying mode;
d. thickness h of wall corner of permeable mortar layer of wall surfaceWall permeable mortarThe calculation of (2):
the formula for calculating the water seepage speed of the wall surface layer is as follows: t is k.s (i.e. water penetration rate equals water penetration rate multiplied by area)
Wherein: t is water seepage speed, unit: m is3S; k is water permeability, unit: m/s;
the formula for calculating the wall corner of the permeable mortar layer of the wall surface is as follows: t-q.s
Wherein:t is water permeation speed, unit: m is3S; q is water permeability, unit: m/s; area, unit: m is2And then:
water seepage rate T of wall surfaceWall with a plurality of walls＝kWall with a plurality of walls.sWall with a plurality of walls；
Water permeable speed T at wall corner of permeable mortar layer of wall surfaceWall permeable mortar＝qWall permeable mortar.sWall permeable mortar(sWall permeable mortar＝LWall permeable mortar.hWall permeable mortar)；
Wherein: sWall permeable mortar: the area of wall department of the wall permeable mortar layer, unit: m is2；LWall permeable mortar: the width of wall department, the unit of the mortar layer wall that permeates water of wall: m;
according to the relation between the water penetration speed of the wall surface layer and the water penetration speed of the wall corner of the permeable mortar layer of the wall surface: the water seepage speed of the wall surface layer is less than or equal to the water seepage speed requirement of the wall corner of the permeable mortar layer of the wall surface, and the measurement and calculation are carried out according to the following steps:
(1) the following quantities were measured: k is a radical ofWall with a plurality of walls、sWall with a plurality of walls、qWall permeable mortar、LWall permeable mortar(ii) a (note: wall surface water permeability, mortar concrete water permeability, etc. are basic terms in the field and should be known by the industry);
(2) calculating the water seepage speed of the wall surface layer: t isWall with a plurality of walls＝kWall with a plurality of walls.sWall with a plurality of walls；
(3) Calculating the thickness of the wall corner of the required permeable mortar layer of the wall surface: h isWall permeable mortar≧TWall with a plurality of walls/(qWall permeable mortar.LWall permeable mortar)；
e. Construction of the permeable mortar layer:
the construction method comprises the following steps:
the first step is as follows: base layer treatment: cleaning the rotten place of the water seepage wall surface 1 in the figure, cleaning dirt and shoveling the overhigh convex part;
the second step is that: calculating h according to the method described in step dWall permeable mortarThe required thickness is set, the construction method adopts blade coating, and the horizontal control line on the wall column is adoptedAnd the leveling pier is used as a mark, and the flatness is checked to meet the leveling requirement;
f. construction of a multilayer plastering waterproof mortar layer:
after the construction of the permeable mortar layer is finished, the construction of a multilayer plastering waterproof mortar layer is carried out, and the construction method comprises the following steps: adopting a blade coating mode to construct to the thickness of 3-15 mm, further checking the flatness to meet the leveling requirement, checking whether the water seepage condition exists or not after the surface is dried, and if the water seepage condition occurs, performing coating supplement until no water seepage exists;
g. construction of odorless polyvinyl alcohol cement waterproof neat paste:
after the construction of the multilayer plastering waterproof mortar layer is finished, the construction of the odor-free polyvinyl alcohol cement waterproof mortar layer is carried out, and the construction method comprises the following steps: and (3) adopting a blade coating mode to construct to the thickness of 3-15 mm, and further checking the flatness to meet the leveling requirement.
The invention comprises the following steps: and further comprising the step h of constructing ground leveling mortar with the thickness of 10 mm-50 mm.
The invention comprises the following steps: the first method and the content in the step a can be replaced by: the second method comprises the following steps: the preparation method comprises the following steps: adding cement into a dry powder mortar mixer, sequentially adding a solid defoaming agent, a cellulose thickener and lignocellulose, uniformly stirring, and sealing and packaging to obtain a component B; the using method comprises the following steps: the river sand and the component B are dry-mixed and uniformly mixed, then (proper amount of) water is added into the mixture of the river sand and the component B, after uniform stirring, the (proper amount of) water is added and stirred to be in a state suitable for construction, and construction is carried out by adopting a blade coating or spraying mode.
The invention comprises the following steps: in the step b, the first method and the content can be replaced by: the second method comprises the following steps: the preparation method comprises the following steps: adding cement into a dry powder mortar mixer, sequentially adding a solid defoaming agent, a cellulose thickener and lignocellulose, uniformly stirring, and sealing and packaging to obtain a component B; the using method comprises the following steps: the component B and the fine sand are mixed uniformly, then a proper amount of water is added into the mixture of the component B and the fine sand, after the mixture is stirred uniformly, a proper amount of water is added and stirred to a state suitable for construction, and construction is carried out by adopting a blade coating or spraying mode.
The invention comprises the following steps: in the step c, the first method and the content can be replaced by: the second method comprises the following steps: the preparation method comprises the following steps: sequentially adding a solid defoaming agent, a cellulose thickener and lignocellulose in a dry powder mortar mixer, adding the prepared polyvinyl alcohol hydrosol, and uniformly stirring to obtain a component B; the using method comprises the following steps: adding the cement into the component B, stirring uniformly, adding (a proper amount of) water, stirring to a state suitable for construction, and constructing by adopting a blade coating or spraying mode.
Compared with the prior art, the invention has the following characteristics and beneficial effects:
(1) the prior art generally adopts a waterproof leakage stopping method, blocks the west wall and causes the water seepage problem of the east wall, and is not an effective solution; the invention adopts a thinning method, addresses both the symptoms and root causes of the problem of water seepage and drainage of the underground engineering wall surface, and has the advantages of low cost, simple process, good effect, safety and environmental protection;
(2) the invention takes ecological environmental protection as an idea, the designed and used materials are mainly aqueous environmental protection materials without volatile substances, the polyvinyl alcohol hydrosol is selected to have no odor substances and is also commonly used as food adhesive substances, the organic-inorganic composite material has better environmental protection performance, and the prepared organic-inorganic composite material is particularly suitable for the requirement of poor air permeability of underground engineering, is environment-friendly and healthy;
(3) the system of the invention designs a material system, a calculation method of various engineering parameters, a coating system and a construction method, forms an innovative technology through integration, and has strong pertinence, good processing effect and outstanding integrated innovation;
(4) the method has the advantages of clear and simple process route, easy control by construction workers, time and labor saving, simple and reliable material production method, stable product quality, low cost, wide raw material source, convenience for large-scale popularization and application and strong practicability.
(5) The invention is designed by the materials of the system and the water permeable and drainage process method, is suitable for the water seepage situation of the general underground engineering wall surface, obtains a novel underground engineering water seepage treatment method, has good application value, is particularly suitable for solving the water seepage problem of the underground engineering wall surface and the ground in national defense, civil defense, underground mine and the like, is ecological and environment-friendly, is easy to operate and has strong practicability.
Drawings
FIG. 1 is a schematic diagram of a water seepage and drainage system for underground engineering wall and ground (or called a water seepage and drainage system for underground engineering wall and ground) according to the present invention;
in the figure: 1-water permeable wall surface, 2-water permeable mortar layer, 3- (multilayer coated) waterproof mortar layer, odorless polyvinyl alcohol cement waterproof neat paste and 4-drainage ditch.
Detailed Description
The following examples are intended to further illustrate the present invention and should not be construed as limiting the scope of the invention, which is intended to be covered by the claims appended hereto.
Example 1:
a preparation method of a ground seepage and ventilation drainage system of an underground engineering wall (or called a preparation method of a breathable ground seepage and ventilation drainage system of the underground engineering wall) comprises the following steps:
A. preparing the underground engineering wall surface water-permeable mortar:
a. proportioning, proportioning according to the table 1
Table 1: a formula of permeable mortar for underground engineering wall:
name (R) Amount (mass%/%)
Cement 20％
River sand (3 mm-5 mm) 79.5％
Solid defoaming agent 0.1％
Cellulose thickener 0.1％
Lignocellulose 0.3％
b. The preparation process comprises the following steps:
the preparation method comprises the following steps: adding cement and dried river sand in a dry powder mortar mixer, sequentially adding a solid defoaming agent, a cellulose thickener and lignocellulose, uniformly stirring, and sealing and packaging to obtain a component A; the using method comprises the following steps: adding a proper amount of water into the component A, uniformly stirring, adding a proper amount of water, stirring to a state suitable for construction, and constructing by adopting a blade coating or spraying mode.
B. Preparing the multilayer plastering waterproof mortar for the underground engineering:
a. compounding according to the formula shown in Table 3
Table 3: a formula of multilayer plastering waterproof mortar of underground works is disclosed:
name (R) Amount (mass%/%)
Cement 25％
Fine sand (1 mm-3 mm) 74.5％
Solid defoaming agent 0.1％
Cellulose thickener 0.1％
Lignocellulose 0.3％
b. The preparation and construction method comprises the following steps:
the preparation method comprises the following steps: adding cement and dried fine sand in a dry powder mortar mixer, sequentially adding a solid defoaming agent, a cellulose thickener and lignocellulose, uniformly stirring, and sealing and packaging to obtain a component A; the using method comprises the following steps: adding a proper amount of water into the component A, uniformly stirring, adding a proper amount of water, stirring to a state suitable for construction, and constructing by adopting a blade coating or spraying mode.
C. Preparing the underground engineering wall ground odor-free polyvinyl alcohol cement waterproof neat paste:
a. compounding according to the formula shown in Table 4
Table 4: a formula of odor-free polyvinyl alcohol cement waterproof neat paste for underground engineering walls and floors comprises the following components:
name (R) Amount (mass%/%)
Cement 74.5％
Polyvinyl alcohol hydrosol 25％
Solid defoaming agent 0.1％
Cellulose thickener 0.1％
Lignocellulose 0.3％
b. The preparation and construction method comprises the following steps:
(1) preparation of polyvinyl alcohol hydrosol: adding one part of polyvinyl alcohol into 18 parts of water, heating the mixture to 85-95 ℃ in a water bath, and obtaining polyvinyl alcohol hydrosol after the solution is in a transparent state;
(2) the preparation method comprises the following steps: adding cement into a dry powder mortar mixer, sequentially adding a solid defoaming agent, a cellulose thickener and lignocellulose, uniformly stirring, and sealing and packaging to obtain a component A; the using method comprises the following steps: adding the prepared polyvinyl alcohol hydrosol into the component A, uniformly stirring, adding a proper amount of water, stirring to a state suitable for construction, and constructing by adopting a blade coating or spraying mode.
D. Thickness h of wall corner of permeable mortar layer of wall surfaceWall permeable mortarIs calculated by
The water permeability of the wall corner of the permeable mortar layer of the wall surface is measured: q. q.sWall permeable mortar0.0045 m/s; in this example kWall with a plurality of walls＝0.00001m/s、sWall with a plurality of walls＝10m2、LWall permeable mortar5.0 m. Then:
(1)Twall with a plurality of walls＝kWall with a plurality of walls.sWall with a plurality of walls＝0.0001m3/s；
(2)hWall permeable mortar≧TWall with a plurality of walls/(qWall permeable mortar.LWall permeable mortar) To obtain hWall permeable mortar≧0.0044m；
E. Construction procedure of the permeable mortar layer:
the construction method comprises the following steps:
the first step is as follows: base layer treatment: cleaning the decayed place, cleaning dirt and shoveling off the overhigh convex part;
the second step is that: calculating h according to the method described in step dWall permeable mortarThe construction method adopts blade coating, takes a horizontal control line and a leveling pier on a wall column as marks, and checks the flatness to achieve the leveling requirement.
F. The construction procedure of the multilayer plastering waterproof mortar layer is as follows:
after the construction of the permeable mortar layer is finished, the construction of a multilayer plastering waterproof mortar layer is carried out, and the construction method comprises the following steps: adopting a blade coating mode to construct (construct on a permeable mortar layer) to 7mm, further checking the flatness to meet the leveling requirement, checking whether the water seepage condition exists or not after the surface is dried, and if the water seepage condition occurs, needing to be recoated until no water seepage exists.
G. The construction procedure of the odorless polyvinyl alcohol cement waterproof neat paste comprises the following steps:
after the construction of the multilayer plastering waterproof mortar layer is finished, the construction of the odorless polyvinyl alcohol cement waterproof mortar layer (the construction on the multilayer plastering waterproof mortar layer) is carried out, and the construction method comprises the following steps: and (5) constructing to 8mm by adopting a blade coating mode, and further checking the flatness to meet the leveling requirement.
The water seepage and water-proof discharge structure diagram of the underground engineering wall and the ground is shown in the attached figure 1.
Example 2:
a preparation method of a ground seepage and ventilation drainage system of an underground engineering wall (or called a preparation method of a breathable ground seepage and ventilation drainage system of the underground engineering wall) comprises the following steps:
A. preparing the underground engineering wall surface water-permeable mortar:
a. the ingredients are the same as those in the embodiment 1 and are omitted;
b. the preparation process comprises the following steps:
the preparation method comprises the following steps: adding cement into a dry powder mortar mixer, sequentially adding a solid defoaming agent, a cellulose thickener and lignocellulose, uniformly stirring, and sealing and packaging to obtain a component B; the using method comprises the following steps: the river sand and the component B are dry-mixed and uniformly mixed, then a proper amount of water is added into the mixture of the river sand and the component B, after uniform stirring, a proper amount of water is added and stirred to a state suitable for construction, and construction is carried out by adopting a blade coating or spraying mode.
B. Preparing the multilayer plastering waterproof mortar for the underground engineering:
a. the formulation was identical to example 1;
b. the preparation process comprises the following steps:
the preparation method comprises the following steps: adding cement into a dry powder mortar mixer, sequentially adding a solid defoaming agent, a cellulose thickener and lignocellulose, uniformly stirring, and sealing and packaging to obtain a component B; the using method comprises the following steps: the component B and the fine sand are mixed uniformly, then a proper amount of water is added into the mixture of the component B and the fine sand, after the mixture is stirred uniformly, a proper amount of water is added, the mixture is stirred to a state suitable for construction, and construction is carried out by adopting a blade coating or spraying mode.
C. Preparing the underground engineering wall ground odor-free polyvinyl alcohol cement waterproof neat paste:
a. the formulation was identical to example 1;
b. the preparation process comprises the following steps:
(1) the preparation of the polyvinyl alcohol hydrosol is consistent with that of example 1;
(2) the preparation method comprises the following steps: sequentially adding a solid defoaming agent, a cellulose thickener and lignocellulose in a dry powder mortar mixer, adding the prepared polyvinyl alcohol hydrosol, and uniformly stirring to obtain a component B; the using method comprises the following steps: adding the cement into the component B, uniformly stirring, adding a proper amount of water, stirring to a state suitable for construction, and constructing by adopting a blade coating or spraying mode.
D. Thickness h of wall corner of permeable mortar layer of wall surfaceWall permeable mortarThe calculation of (2):
it hWall permeable mortarCalculation of (D) is in accordance with example 1；
E. Construction procedure of the permeable mortar layer:
the construction procedure was the same as in example 1;
F. the construction procedure of the multilayer plastering waterproof mortar layer is as follows:
the construction procedure was the same as in example 1;
G. the construction procedure of the odorless polyvinyl alcohol cement waterproof neat paste comprises the following steps:
the construction procedure was the same as in example 1.
Examples 3 to 8:
a preparation method of a ground seepage and ventilation drainage system of an underground engineering wall (or a preparation method of a breathable ground seepage and ventilation drainage system of the underground engineering wall) comprises the following steps:
mainly for kWall with a plurality of wallsIs changed, and q isWall permeable mortar、sWall with a plurality of wallsAnd LWall permeable mortarUnchanged, corresponding to hWall permeable mortarThe change of (d) is calculated according to the method of the invention;
table 5: examples 3 to 8 in kWall with a plurality of wallsAnd hWall permeable mortarParameter table (2)
Example numbering 3 4 5 6 7 8
kWall with a plurality of walls(m/s) 0.00005 0.00003 0.00002 0.000005 0.000003 0.000002
hWall permeable mortar(m) 0.022 0.013 0.0088 0.0022 0.0013 0.00088
The preparation method and the construction procedure of the embodiments 3 to 8 are the same as those of the embodiment 1, and a breathable underground engineering wall and ground water-permeable and air-permeable drainage system can be obtained without any procedure.
Examples 9 to 21:
a preparation method of a ground seepage and ventilation drainage system of an underground engineering wall (or a preparation method of a breathable ground seepage and ventilation drainage system of the underground engineering wall) comprises the following steps:
mainly aiming at the mass percentage ratio of water, cement and river sand of the wall permeable mortar to be changed, kWall with a plurality of walls0.000002m/s, and qDitch pervious concrete、sWall with a plurality of wallsAnd LWall permeable mortarThe content of the other components is consistent with that of example 1, corresponding to hWall permeable mortarIs calculated according to the method of the invention, qWall permeable mortarIs obtained by measurement;
table 6: example 9-21 weight percent of water, cement and river sand of the wall permeable mortar and qWall permeable mortarAnd hWall permeable mortarParameter (d) ofTable:
Figure BDA0002916864930000131
Figure BDA0002916864930000141
the preparation method and construction procedure of examples 9-21 are the same as those of example 1, and a breathable underground engineering wall and ground water-permeable and air-permeable drainage system can be obtained without any procedure.
Examples 22 to 28:
a preparation method of a ground seepage and ventilation drainage system of an underground engineering wall (or a preparation method of a breathable ground seepage and ventilation drainage system of the underground engineering wall) comprises the following steps:
mainly aiming at the mass percentage ratio of the solid defoaming agent, the cellulose thickener and the lignocellulose to be changed, and kWall with a plurality of walls、sWall with a plurality of walls、LWall permeable mortarThe content of the other components is consistent with that of example 1, corresponding to hWall permeable mortarIs calculated according to the method of the invention, qWall permeable mortarIs obtained by measurement;
table 8: examples 22 to 28 mass percents of solid defoaming agent, cellulose thickener and lignocellulose, and qWall permeable mortar、qDitch pervious concrete、hWall permeable mortarAnd sDitch pervious concreteThe parameter table of (1):
Figure BDA0002916864930000142
the preparation method and construction procedure of examples 22-28 are the same as those of example 1, and a breathable underground engineering wall and ground water-permeable and air-permeable drainage system can be obtained without any procedure.
Example 29:
a preparation method of a ground seepage and ventilation drainage system of an underground engineering wall (or called a preparation method of a breathable ground seepage and ventilation drainage system of the underground engineering wall) comprises the following steps:
a. preparing the underground engineering wall surface water-permeable mortar:
the wall surface water-permeable mortar comprises the following components in percentage by mass:
10 to 39 percent of cement (ordinary 325# or 425# Portland cement);
60 to 89 percent of river sand, wherein the grain diameter range of the river sand is 3 to 5 mm;
0.05 to 0.2 percent of solid defoaming agent (production enterprises comprise Federal fine chemical industry Co., Ltd., B-031, etc., Defeng defoaming agent Co., Ltd., DF-230, etc., Wan New Material Co., Ltd., W-435, etc., of Guangzhou);
0.05 to 0.35 percent of cellulose thickening agent (the cellulose thickening agent is hydroxypropyl cellulose ether or carboxymethyl cellulose or a mixture of the two) (hydroxypropyl cellulose ether: the production enterprises comprise Shandong Gomais chemical company Limited, MS-400 type and the like, Wan New Material chemical company Limited in Guangzhou city, R-671 type, Runku City Runda chemical company Limited, HT-E type and the like) (carboxymethyl cellulose: the production enterprises comprise Wan New Material chemical company Limited in Guangzhou city, R-696 type, Runku City North chemical company Limited, IL8 type and the like, Yibo chemical company Limited in Runku city, HT-1 type and the like);
0.1 to 0.5 percent of lignocellulose (which is a fiber reinforced material) (the production enterprises comprise Shandong Fuying biological science and technology limited company, FY type, Shandong Fuying biological science and technology limited company, 006 type, Gallery Jiwei glue industry limited company, JW type);
the preparation and use method of the wall surface permeable mortar comprises the following steps:
the method comprises the following steps: the preparation method comprises the following steps: adding cement and dried river sand in a dry powder mortar mixer, sequentially adding a solid defoaming agent, a cellulose thickener and lignocellulose, uniformly stirring, and sealing and packaging to obtain a component A; the using method comprises the following steps: adding a proper amount of water into the component A, uniformly stirring, adding a proper amount of water, stirring to a state suitable for construction, and constructing by adopting a blade coating or spraying mode;
b. preparing the multilayer plastering waterproof mortar for the underground engineering:
the multi-layer plastering waterproof mortar comprises the following components in percentage by mass:
15% -44% of cement (ordinary 325# or 425# Portland cement);
55 to 84 percent of fine sand, wherein the particle size range of the fine sand is 1 to 3 mm;
0.05 to 0.2 percent of solid defoaming agent (production enterprises comprise Federal fine chemical industry Co., Ltd., B-031, etc., Defeng defoaming agent Co., Ltd., DF-230, etc., Wan New Material Co., Ltd., W-435, etc., of Guangzhou);
0.05 to 0.35 percent of cellulose thickening agent (the cellulose thickening agent is hydroxypropyl cellulose ether or carboxymethyl cellulose or a mixture thereof) (hydroxypropyl cellulose ether: a production enterprise comprises Shandong Gomais chemical company Limited, MS-400 type and the like, Wan New Material company Limited in Guangzhou city, R-671 type, Runku City Runda chemical company Limited, HT-E type and the like) (carboxymethyl cellulose: a production enterprise comprises Wan New Material company Limited in Guangzhou city, R-696 type, Runku City North chemical company Limited, IL8 type and the like, Yibo chemical company Limited in Runku city, HT-1 type and the like);
0.1 to 0.5 percent of lignocellulose (which is a fiber reinforced material) (the production enterprises comprise Shandong Fuying biological science and technology limited company, FY type, Shandong Fuying biological science and technology limited company, 006 type, Gallery Jiwei glue industry limited company, JW type);
the preparation and application method of the multilayer plastering waterproof mortar comprises the following steps:
the method comprises the following steps: the preparation method comprises the following steps: adding cement and dried fine sand in a dry powder mortar mixer, sequentially adding a solid defoaming agent, a cellulose thickener and lignocellulose, uniformly stirring, and sealing and packaging to obtain a component A; the using method comprises the following steps: adding a proper amount of water into the component A, uniformly stirring, adding a proper amount of water, stirring to a state suitable for construction, and constructing by adopting a blade coating or spraying mode;
c. preparing the underground engineering wall ground odor-free polyvinyl alcohol cement waterproof neat paste:
the odorless polyvinyl alcohol cement waterproof neat paste comprises the following components in percentage by mass:
40 to 84 percent of cement (ordinary 325# or 425# Portland cement);
15 to 59 percent of polyvinyl alcohol hydrosol (polyvinyl alcohol: the production enterprises comprise Shanghai Meimengjia chemical engineering Co., Ltd., model 2488; Shanghai Hu industry Co., Ltd., model 2499; Guangdong Federal Fine chemical industry Co., Ltd., model C-150);
0.05 to 0.2 percent of solid defoaming agent (production enterprises comprise Federal fine chemical industry Co., Ltd., B-031, etc., Defeng defoaming agent Co., Ltd., DF-230, etc., Wan New Material Co., Ltd., W-435, etc., of Guangzhou);
0.05 to 0.35 percent of cellulose thickening agent (the cellulose thickening agent is hydroxypropyl cellulose ether or carboxymethyl cellulose or a mixture thereof) (hydroxypropyl cellulose ether: a production enterprise comprises Shandong Gomais chemical company Limited, MS-400 type and the like, Wan New Material company Limited in Guangzhou city, R-671 type, Runku City Runda chemical company Limited, HT-E type and the like) (carboxymethyl cellulose: a production enterprise comprises Wan New Material company Limited in Guangzhou city, R-696 type, Runku City North chemical company Limited, IL8 type and the like, Yibo chemical company Limited in Runku city, HT-1 type and the like);
0.1 to 0.5 percent of lignocellulose (which is a fiber reinforced material) (the production enterprises comprise Shandong Fuying biological science and technology limited company, FY type, Shandong Fuying biological science and technology limited company, 006 type, Gallery Jiwei glue industry limited company, JW type).
Preparation of polyvinyl alcohol hydrosol: adding 1 part by mass of polyvinyl alcohol into 18 parts by mass of water, heating in a water bath to 85-95 ℃, and obtaining polyvinyl alcohol hydrosol after the solution is in a transparent state;
the preparation and use method of the odorless polyvinyl alcohol cement waterproof neat paste comprises the following steps:
the method comprises the following steps: the preparation method comprises the following steps: adding cement into a dry powder mortar mixer, sequentially adding a solid defoaming agent, a cellulose thickener and lignocellulose, uniformly stirring, and sealing and packaging to obtain a component A; the using method comprises the following steps: adding the prepared polyvinyl alcohol hydrosol into the component A, uniformly stirring, adding (a proper amount of) water, stirring to a state suitable for construction, and constructing by adopting a blade coating or spraying mode;
d. thickness h of wall corner of permeable mortar layer of wall surfaceWall permeable mortarThe calculation of (2):
the formula for calculating the water seepage speed of the wall surface layer is as follows: t is k.s (i.e. water penetration rate equals water penetration rate multiplied by area)
Wherein: t is water seepage speed, unit: m is3S; k is water permeability, unit: m/s;
the formula for calculating the wall corner of the permeable mortar layer of the wall surface is as follows: t-q.s
Wherein: t is water permeation speed, unit: m is3S; q is water permeability, unit: m/s; area, unit: m is2And then:
water seepage rate T of wall surfaceWall with a plurality of walls＝kWall with a plurality of walls.sWall with a plurality of walls；
Water permeable speed T at wall corner of permeable mortar layer of wall surfaceWall permeable mortar＝qWall permeable mortar.sWall permeable mortar(sWall permeable mortar＝LWall permeable mortar.hWall permeable mortar)；
Wherein: sWall permeable mortar: the area of wall department of the wall permeable mortar layer, unit: m is2；LWall permeable mortar: the width of wall department, the unit of the mortar layer wall that permeates water of wall: m;
according to the relation between the water penetration speed of the wall surface layer and the water penetration speed of the wall corner of the permeable mortar layer of the wall surface: the water seepage speed of the wall surface layer is less than or equal to the water seepage speed requirement of the wall corner of the permeable mortar layer of the wall surface, and the measurement and calculation are carried out according to the following steps:
(1) the following quantities were measured: k is a radical ofWall with a plurality of walls、sWall with a plurality of walls、qWall permeable mortar、LWall permeable mortar(ii) a (note: wall surface water permeability, mortar concrete water permeability, etc. are basic terms in the field and should be known by the industry);
(2) calculating the water seepage speed of the wall surface layer: t isWall with a plurality of walls＝kWall with a plurality of walls.sWall with a plurality of walls；
(3) Calculating the thickness of the wall corner of the required permeable mortar layer of the wall surface: h isWall permeable mortar≧TWall with a plurality of walls/(qWall permeable mortar.LWall permeable mortar)；
e. Construction of the permeable mortar layer:
the construction method comprises the following steps:
the first step is as follows: base layer treatment: cleaning the decayed place (of the water seepage wall surface 1), cleaning dirt and shoveling off the overhigh convex part;
the second step is that: calculating h according to the method described in step dWall permeable mortarThe construction method adopts blade coating, takes a horizontal control line and a leveling pier on a wall column as marks, and checks the flatness to achieve the leveling requirement;
f. construction of a multilayer plastering waterproof mortar layer:
after the construction of the permeable mortar layer is finished, the construction of a multilayer plastering waterproof mortar layer is carried out, and the construction method comprises the following steps: adopting a blade coating mode to construct to the thickness of 3-15 mm, further checking the flatness to meet the leveling requirement, checking whether the water seepage condition exists or not after the surface is dried, and if the water seepage condition occurs, performing coating supplement until no water seepage exists;
g. construction of odorless polyvinyl alcohol cement waterproof neat paste:
after the construction of the multilayer plastering waterproof mortar layer is finished, the construction of the odor-free polyvinyl alcohol cement waterproof mortar layer is carried out, and the construction method comprises the following steps: and (3) adopting a blade coating mode to construct to the thickness of 3-15 mm, and further checking the flatness to meet the leveling requirement.
And further comprising the step h of constructing ground leveling mortar with the thickness of 10 mm-50 mm.
Example 30:
a preparation method of a ground seepage drainage system of an underground engineering wall comprises the following steps: the second method comprises the following steps: the preparation method comprises the following steps: adding cement into a dry powder mortar mixer, sequentially adding a solid defoaming agent, a cellulose thickener and lignocellulose, uniformly stirring, and sealing and packaging to obtain a component B; the using method comprises the following steps: firstly, uniformly and dryly stirring river sand and the component B, then adding (a proper amount of) water into the mixture of the river sand and the component B, uniformly stirring, then supplementing (a proper amount of) water, stirring to a state suitable for construction, and constructing by adopting a blade coating or spraying mode; otherwise, the same as example 29 is omitted.
Example 31:
a preparation method of a ground seepage drainage system of an underground engineering wall comprises the following steps: the second method comprises the following steps: the preparation method comprises the following steps: adding cement into a dry powder mortar mixer, sequentially adding a solid defoaming agent, a cellulose thickener and lignocellulose, uniformly stirring, and sealing and packaging to obtain a component B; the using method comprises the following steps: the component B and the fine sand are mixed uniformly, then a proper amount of water is added into the mixture of the component B and the fine sand, after the mixture is stirred uniformly, the water is added again and stirred to a state suitable for construction, and construction is carried out by adopting a blade coating or spraying mode; otherwise, the same as example 29 is omitted.
Example 31:
a preparation method of a ground seepage drainage system of an underground engineering wall comprises the following steps: the second method comprises the following steps: the preparation method comprises the following steps: sequentially adding a solid defoaming agent, a cellulose thickener and lignocellulose in a dry powder mortar mixer, adding the prepared polyvinyl alcohol hydrosol, and uniformly stirring to obtain a component B; the using method comprises the following steps: adding cement into the component B, uniformly stirring, adding (a proper amount of) water, stirring to a state suitable for construction, and constructing by adopting a blade coating or spraying mode; otherwise, the same as example 29 is omitted.
In the above embodiment: all the raw materials are commercially available products.
In the above embodiment: the percentages used, not specifically indicated, are percentages by weight or known to those skilled in the art; the parts by mass (by weight) may all be grams or kilograms.
In the above embodiment: the process parameters (temperature, time, etc.) and the numerical values of the components in each step are in the range, and any point can be applicable.
The present invention and the technical contents not specifically described in the above embodiments are the same as the prior art.
The present invention is not limited to the above-described embodiments, and the present invention can be implemented with the above-described advantageous effects.

Claims (4)

1. A preparation method of a ground seepage drainage system of an underground engineering wall is characterized by comprising the following steps:
a. preparing the underground engineering wall surface water-permeable mortar:
the wall surface water-permeable mortar comprises the following components in percentage by mass:
10% -39% of cement;
60 to 89 percent of river sand;
0.05 to 0.2 percent of solid defoaming agent;
0.05 to 0.35 percent of cellulose thickening agent;
0.1 to 0.5 percent of lignocellulose;
the preparation and use method of the wall surface permeable mortar comprises the following steps:
the method comprises the following steps: the preparation method comprises the following steps: adding cement and dried river sand in a dry powder mortar mixer, sequentially adding a solid defoaming agent, a cellulose thickener and lignocellulose, uniformly stirring, and sealing and packaging to obtain a component A; the using method comprises the following steps: adding water into the component A, uniformly stirring, adding water, stirring to a state suitable for construction, and constructing by adopting a blade coating or spraying mode;
b. preparing the multilayer plastering waterproof mortar for the underground engineering:
the multi-layer plastering waterproof mortar comprises the following components in percentage by mass:
15% -44% of cement;
55 to 84 percent of fine sand;
0.05 to 0.2 percent of solid defoaming agent;
0.05 to 0.35 percent of cellulose thickening agent;
0.1 to 0.5 percent of lignocellulose;
the preparation and application method of the multilayer plastering waterproof mortar comprises the following steps:
the method comprises the following steps: the preparation method comprises the following steps: adding cement and dried fine sand in a dry powder mortar mixer, sequentially adding a solid defoaming agent, a cellulose thickener and lignocellulose, uniformly stirring, and sealing and packaging to obtain a component A; the using method comprises the following steps: adding water into the component A, uniformly stirring, supplementing water, stirring to a state suitable for construction, and constructing by adopting a blade coating or spraying mode;
c. preparing the underground engineering wall ground odor-free polyvinyl alcohol cement waterproof neat paste:
the odorless polyvinyl alcohol cement waterproof neat paste comprises the following components in percentage by mass:
40-84% of cement;
15% -59% of polyvinyl alcohol hydrosol;
0.05 to 0.2 percent of solid defoaming agent;
0.05 to 0.35 percent of cellulose thickening agent;
0.1 to 0.5 percent of lignocellulose;
preparation of polyvinyl alcohol hydrosol: adding 1 part by mass of polyvinyl alcohol into 18 parts by mass of water, heating in a water bath to 85-95 ℃, and obtaining polyvinyl alcohol hydrosol after the solution is in a transparent state;
the preparation and use method of the odorless polyvinyl alcohol cement waterproof neat paste comprises the following steps:
the method comprises the following steps: the preparation method comprises the following steps: adding cement into a dry powder mortar mixer, sequentially adding a solid defoaming agent, a cellulose thickener and lignocellulose, uniformly stirring, and sealing and packaging to obtain a component A; the using method comprises the following steps: adding the prepared polyvinyl alcohol hydrosol into the component A, uniformly stirring, adding water, stirring to a state suitable for construction, and constructing by adopting a blade coating or spraying mode;
d. thickness h of wall corner of permeable mortar layer of wall surfaceWall permeable mortarThe calculation of (2):
the formula for calculating the water seepage speed of the wall surface layer is as follows: t = k, s, and,
wherein: t is water seepage speed, unit: m is3S; k is water permeability, unit: m/s;
the formula for calculating the wall corner of the permeable mortar layer of the wall surface is as follows: t = q.s
Wherein: t is water permeation speed, unit: m is3Q is water permeability, unit: m/s, area, unit: m is2And then:
water seepage rate T of wall surfaceWall with a plurality of walls=kWall with a plurality of walls.sWall with a plurality of walls；
Water permeable speed T at wall corner of permeable mortar layer of wall surfaceWall permeable mortar=qWall permeable mortar. sWall permeable mortar(sWall permeable mortar=LWall permeable mortar.hPermeable concrete for wall)；
Wherein: sWall permeable mortar: the area of wall department of the wall permeable mortar layer, unit: m is2 ; LWall permeable mortar: the width of wall department, the unit of the mortar layer wall that permeates water of wall: m is
According to the relation between the water penetration speed of the wall surface layer and the water penetration speed of the wall corner of the permeable mortar layer of the wall surface: the water seepage speed of the wall surface layer is less than or equal to the water seepage speed requirement of the wall corner of the permeable mortar layer of the wall surface, and the measurement and calculation are carried out according to the following steps:
(1) the following quantities were measured: k is a radical ofWall with a plurality of walls、sWall with a plurality of walls、qWall permeable mortar、LWall permeable mortar；
(2) Calculating the water seepage speed of the wall surface layer: t isWall with a plurality of walls=kWall with a plurality of walls.sWall with a plurality of walls；
(3) Calculating the thickness of the wall corner of the required permeable mortar layer of the wall surface: h isWall permeable mortar≧TWall with a plurality of walls/(qWall permeable mortar. LWall permeable mortar)；
e. Construction of the permeable mortar layer:
the construction method comprises the following steps:
the first step is as follows: base layer treatment: cleaning the decayed place, cleaning dirt and shoveling off the overhigh convex part;
the second step is that: calculating h according to the method described in step dWall permeable mortarThe construction method adopts blade coating, takes a horizontal control line and a leveling pier on a wall column as marks, and checks the flatness to achieve the leveling requirement;
f. construction of a multilayer plastering waterproof mortar layer:
after the construction of the permeable mortar layer is finished, the construction of a multilayer plastering waterproof mortar layer is carried out, and the construction method comprises the following steps: adopting a blade coating mode to construct to the thickness of 3-15 mm, further checking the flatness to meet the leveling requirement, checking whether the water seepage condition exists or not after the surface is dried, and if the water seepage condition occurs, performing coating supplement until no water seepage exists;
g. construction of odorless polyvinyl alcohol cement waterproof neat paste:
after the construction of the multilayer plastering waterproof mortar layer is finished, the construction of the odor-free polyvinyl alcohol cement waterproof mortar layer is carried out, and the construction method comprises the following steps: and (3) adopting a blade coating mode to construct to the thickness of 3-15 mm, and further checking the flatness to meet the leveling requirement.
2. The method for preparing the underground engineering wall and ground seepage drainage system according to claim 1, which is characterized in that: in the step a, the method I and the content are replaced by: the second method comprises the following steps: the preparation method comprises the following steps: adding cement into a dry powder mortar mixer, sequentially adding a solid defoaming agent, a cellulose thickener and lignocellulose, uniformly stirring, and sealing and packaging to obtain a component B; the using method comprises the following steps: the river sand and the component B are dry-mixed and uniformly mixed, then water is added into the mixture of the river sand and the component B, after uniform stirring, the water is added again and stirred to be in a state suitable for construction, and construction is carried out by adopting a blade coating or spraying mode.
3. The method for preparing the underground engineering wall and ground seepage drainage system according to claim 1, which is characterized in that: in the step b, the first method and the content are replaced by: the second method comprises the following steps: the preparation method comprises the following steps: adding cement into a dry powder mortar mixer, sequentially adding a solid defoaming agent, a cellulose thickener and lignocellulose, uniformly stirring, and sealing and packaging to obtain a component B; the using method comprises the following steps: the component B and the fine sand are mixed uniformly, then water is added into the mixture of the component B and the fine sand, after the mixture is mixed uniformly, the water is added again and the mixture is mixed to a state suitable for construction, and construction is carried out by adopting a blade coating or spraying mode.
4. The method for preparing the underground engineering wall and ground seepage drainage system according to claim 1, which is characterized in that: in the step c, the first method and the content are replaced by: the second method comprises the following steps: the preparation method comprises the following steps: sequentially adding a solid defoaming agent, a cellulose thickener and lignocellulose in a dry powder mortar mixer, adding the prepared polyvinyl alcohol hydrosol, and uniformly stirring to obtain a component B; the using method comprises the following steps: adding the cement into the component B, uniformly stirring, adding water, stirring to a state suitable for construction, and constructing by adopting a blade coating or spraying mode.
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