CN113832919B - Seepage-proofing and water-stopping method for hydraulic engineering - Google Patents
Seepage-proofing and water-stopping method for hydraulic engineering Download PDFInfo
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- CN113832919B CN113832919B CN202111121925.8A CN202111121925A CN113832919B CN 113832919 B CN113832919 B CN 113832919B CN 202111121925 A CN202111121925 A CN 202111121925A CN 113832919 B CN113832919 B CN 113832919B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
- E02B3/16—Sealings or joints
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
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Abstract
The invention relates to the technical field of hydraulic engineering, in particular to an anti-seepage water-stopping method for hydraulic engineering. The method comprises the following steps: the method comprises the following steps: after the hydraulic engineering dam is solidified, punching a hole above the dam body of the hydraulic engineering dam by using a drilling machine, and placing a steel pipe in the hole; step two: digging a foundation of the anti-seepage wall body from the bottom of the dam from the dam body, punching a hole in the middle of the foundation by using a drilling machine, and placing a steel pipe in the hole; step three: manufacturing a concrete mould, wherein the shape of the concrete mould is in a shape of a character '21274'; step four: pouring impervious concrete into the mould; step five: building wall stones with an angle of 70 degrees with the foundation on the outer side of the concrete impervious wall; step six: bending a steel bar with the diameter of 15CM, and fixing the steel bar in a hole position by using concrete; step seven: and building a coping stone between the top of the dam and the top of the wall stone. The invention provides an anti-seepage water-stopping method for hydraulic engineering, which can prevent water seepage of dams, adopts a multi-layer waterproof structure and uses steel bars for connection between buildings.
Description
Technical Field
The invention relates to the technical field of hydraulic engineering, in particular to an anti-seepage water-stopping method for hydraulic engineering.
Background
In China, the number of hydraulic engineering projects is very large, due to the diversity of geographical positions, the shapes and the characteristics of the earth dam are very diverse, various natural disasters such as flood, debris flow and the like which are not met in any period exist every year, the hydraulic engineering projects play a role of lifting at all, the hydraulic engineering projects can play a great role in various aspects of living and production such as rural farmland irrigation and the like, china realizes the importance of hydraulic engineering on the production and the life of people from the old time, constructs a plurality of facilities to reduce disaster resistance and resist flood, also has many problems in hydraulic engineering, mainly has the problems of weak tolerance of the earth dam and leakage, cannot meet the standards, the damage of the earth dam and the damage of a reservoir mainly comprise the types of earth flow, contact type scouring and the like, the damage of the earth dam is mainly caused by the long-term osmosis effect, the influence of the long-term osmosis effect on the earth dam and the water leakage of the reservoir is very serious, the influence of the large water flow and water flow loss on the integral damage of the reservoir, and the water flow loss and the influence of the large water flow and water loss on the large water flow and water loss.
Disclosure of Invention
The invention provides an anti-seepage water-stopping method for hydraulic engineering, which can prevent water seepage of dams, adopts a multi-layer waterproof structure and uses steel bars for connection between buildings.
The invention adopts a technical scheme that an anti-seepage water-stopping method on a hydraulic engineering is characterized in that: the method comprises the following steps:
the method comprises the following steps: after the hydraulic engineering dam is solidified, drilling holes above a dam body of the hydraulic engineering dam by using a drilling machine, wherein the depth of each hole is 0.5 m, the diameter of each hole is 20CM, placing steel pipes with the height of 0.5 m, the outer diameter of 20CM and the inner diameter of 15CM into the holes, and filling concrete between the outer sides of the steel pipes and the holes;
step two: digging out a foundation of the impervious wall body from the dam body at the bottom of the dam by using an excavator, punching holes with the depth of 0.5 m and the diameter of 20CM in the middle of the foundation by using a drilling machine, and placing steel pipes with the outer diameter of 20CM and the inner diameter of 15CM in the holes;
step three: manufacturing a concrete mould according to the height of the dam and the width of the foundation, wherein the shape of the concrete mould is in a shape of a character '21274', and the concrete mould penetrates through two rows of steel pipes with the outer diameter of 20CM and the inner diameter of 15CM from the top to the bottom;
step four: pouring impervious concrete into the mold, waiting for the concrete to solidify, disassembling the mold, transporting the concrete impervious wall to one side of the dam, and placing the opening outwards when the wall is placed;
step five: building wall stones with an angle of 70 degrees between the outer sides of the concrete impervious walls and the foundation, wherein the positions of steel pipes penetrating through the concrete impervious walls are needed when the wall stones are built;
step six: fixing one end of a steel bar with the diameter of 15CM in a hole above the bus by using concrete, penetrating the middle of the steel bar through a concrete impervious wall body and wall stones, and fixing the lower end of the steel bar in the hole on the foundation by using concrete;
step seven: and building a layer of capping stone between the top of the dam and the top of the wall stone, pouring the capping stone by using concrete, filling the concrete in the foundation and filling the foundation.
The punching distance on the dam is determined according to the width of the dam needing to be constructed.
The height of the concrete mould is determined according to the height of a dam needing to be constructed.
The concrete anti-permeability wall body is made of anti-permeability concrete, raw materials comprise ordinary portland cement with the strength not lower than 32.5Mpa and low-hydration-heat cement, the 7-day hydration-heat index of the cement is not higher than 275kJ/kg, early strength cement with an R character is not used, fly ash not lower than II grade is not used, the 5-31.5 mm grading is uniform, the content of mud is not more than 1% of mechanically crushed stone, the fineness modulus is 2.5-3.0, the mud content is not more than 3% of medium coarse sand, calcium formate, polypropylene reticular fiber and anti-permeability fiber are added during manufacturing, and the addition amount of the additive is not more than 5% of the mass of the cement.
Before the wall surface stones are built, the wall surface stone stones are manually checked, the stones are checked one by one, stones with large-scale weathering on the edges are firstly removed, then whether cracks exist on the stones are checked, the stones with cracks but clean surfaces are broken and used as fillers, the stones with large cracks and silt in the cracks are removed, the stones need to be intensively cleaned before being built, moss, mud and the like on the surfaces are removed, then the stones are washed and soaked by clean water, and the corner softening parts are removed after the soaking is finished.
When the wall surface stones are built, stones must be kept wet, mortar is paved on a building surface, then the stones are placed, the same layer of the stones is approximately parallel to rise, the built stones face downwards in a large scale to prevent shaking, the stones are filled with the mortar, when gaps are large, broken stone slice filling materials are filled when the mortar is filled, the minimum width of a building joint between the stones is not more than 1.5CM, a joint cut between the upper part and the lower part and the front part and the rear part are staggered, and water seepage of the whole row of wall surface due to one opening is prevented.
Before the steel bar is placed in the steel pipe, oil stain, dust, rust and the like on the surface of the steel bar are thoroughly removed, the steel bar is soaked in an antirust agent for about ten minutes, and each liter of the antirust agent is prepared from 300g of 85% phosphoric acid, 20g of 65% nitric acid, 30g of 36.5% hydrochloric acid, 100g of sodium citrate, 30g of sodium sulfite, 20g of urotropine, 50g of sodium dodecyl benzene sulfonate and 100g of zinc sulfate, and the total amount of the antirust agent is 1L by adding into pure water and stirring and mixing uniformly.
The invention has the beneficial effects that:
the concrete anti-permeability wall body is made of anti-permeability concrete, calcium formate, polypropylene reticular fiber and anti-permeability fiber are added into anti-permeability cement, water in a dam can be effectively prevented from permeating, wall stones are built in front of the concrete anti-permeability wall body, building stones are screened and cleaned through multiple processes before the wall stones are built, the stability of the wall stones can be enhanced and the possibility of water seepage of the wall stones can be reduced according to building standards when the wall stones are built, a plurality of wall bodies are connected through reinforcing steel bars, the reinforcing steel bars are soaked in high-quality antirust agents, the service life of the reinforcing steel bars is prolonged, and meanwhile, the labor cost of subsequent repair is reduced.
Detailed Description
Example 1:
an anti-seepage water-stopping method on hydraulic engineering is characterized in that: the method comprises the following steps:
the method comprises the following steps: after the hydraulic engineering dam is solidified, drilling holes above a dam body of the hydraulic engineering dam by using a drilling machine, wherein the depth of each hole is 0.5 m, the diameter of each hole is 20CM, placing steel pipes with the height of 0.5 m, the outer diameter of 20CM and the inner diameter of 15CM into the holes, and filling concrete between the outer sides of the steel pipes and the holes;
step two: digging out a foundation of the impervious wall body from the dam body at the bottom of the dam by using an excavator, punching holes with the depth of 0.5 m and the diameter of 20CM in the middle of the foundation by using a drilling machine, and placing steel pipes with the outer diameter of 20CM and the inner diameter of 15CM in the holes;
step three: manufacturing a concrete mould according to the height of the dam and the width of the foundation, wherein the shape of the concrete mould is a shape like a Chinese character '\' 21274, and the concrete mould penetrates through two rows of steel pipes with the outer diameter of 20CM and the inner diameter of 15CM from the upper part to the lower part;
step four: pouring impervious concrete into the mold, waiting for the concrete to solidify, disassembling the mold, transporting the concrete impervious wall to one side of the dam, and placing the opening outwards when the wall is placed;
step five: building a wall stone with an angle of 70 degrees with the foundation on the outer side of the concrete impervious wall body, wherein the position of a steel pipe penetrating through the concrete impervious wall body is required when the wall stone is built;
step six: fixing one end of a steel bar with the diameter of 15CM in a hole position above the bus by using concrete, penetrating the middle of the steel bar through a concrete impervious wall body and wall stones, and fixing the lower part of the steel bar in the hole position on the foundation by using concrete;
step seven: and building a layer of capping stone between the top of the dam and the top of the wall stone, pouring the capping stone by using concrete, filling the concrete in the foundation and filling the foundation.
The punching distance on the dam is determined according to the width of the dam needing to be constructed.
The height of the concrete mould is determined according to the height of a dam to be constructed.
The concrete anti-permeability wall body is made of anti-permeability concrete, raw materials comprise ordinary portland cement with the strength not lower than 32.5Mpa and low-hydration-heat cement, the 7-day hydration-heat index of the cement is not higher than 275kJ/kg, early strength cement with an R character is not used, fly ash not lower than II grade is not used, the 5-31.5 mm grading is uniform, the content of mud is not more than 1% of mechanically crushed stone, the fineness modulus is 2.5-3.0, the mud content is not more than 3% of medium coarse sand, calcium formate, polypropylene reticular fiber and anti-permeability fiber are added during manufacturing, and the addition amount of the additive is not more than 5% of the mass of the cement.
Before the wall surface stones are built, the wall surface stone stones are manually checked, the stones are checked one by one, stones with large-scale weathering on the edges are firstly removed, then whether cracks exist on the stones are checked, the stones with cracks but clean surfaces are broken and used as fillers, the stones with large cracks and silt in the cracks are removed, the stones need to be intensively cleaned before being built, moss, mud and the like on the surfaces are removed, then the stones are washed and soaked by clean water, and the corner softening parts are removed after the soaking is finished.
When the wall surface stones are built, stones must be kept wet, mortar is paved on a building surface, then the stones are placed, the same layer of the stones is approximately parallel to rise, the built stones face downwards in a large scale to prevent shaking, the stones are filled with the mortar, when gaps are large, broken stone slice filling materials are filled when the mortar is filled, the minimum width of a building joint between the stones is not more than 1.5CM, a joint cut between the upper part and the lower part and the front part and the rear part are staggered, and water seepage of the whole row of wall surface due to one opening is prevented.
Before the steel bar is placed in the steel pipe, oil stain, dust, rust and the like on the surface of the steel bar are thoroughly removed, the steel bar is soaked in an antirust agent for about ten minutes, and each liter of the antirust agent adopts 300g of phosphoric acid with the concentration of 85%, 20g of nitric acid with the concentration of 65%, 30g of hydrochloric acid with the concentration of 36.5%, 100g of sodium citrate, 30g of sodium sulfite, 20g of urotropine, 50g of sodium dodecyl benzene sulfonate and 100g of zinc sulfate, and is added into pure water, the total amount is 1L, and the stirring and the mixing are uniform.
The concrete anti-permeability wall body is made of anti-permeability concrete, calcium formate, polypropylene reticular fiber and anti-permeability fiber are added into anti-permeability cement, water in a dam can be effectively prevented from permeating, wall stones are built in front of the concrete anti-permeability wall body, building stones are screened and cleaned through multiple processes before the wall stones are built, the stability of the wall stones can be enhanced and the possibility of water seepage of the wall stones can be reduced according to building standards when the wall stones are built, a plurality of wall bodies are connected through reinforcing steel bars, the reinforcing steel bars are soaked in high-quality antirust agents, the service life of the reinforcing steel bars is prolonged, and meanwhile, the labor cost of subsequent repair is reduced.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (7)
1. An anti-seepage water-stopping method on hydraulic engineering is characterized in that: the method comprises the following steps:
the method comprises the following steps: after the hydraulic engineering dam is solidified, drilling holes above the dam body of the hydraulic engineering dam by using a drilling machine, wherein the depth of each hole is 0.5 m, the diameter of each hole is 20CM, placing steel pipes with the height of 0.5 m, the outer diameter of 20CM and the inner diameter of 15CM into the holes, and filling concrete between the outer sides of the steel pipes and the holes;
step two: digging out a foundation of the impervious wall body from the dam body at the bottom of the dam by using an excavator, punching holes with the depth of 0.5 m and the diameter of 20CM in the middle of the foundation by using a drilling machine, and placing steel pipes with the outer diameter of 20CM and the inner diameter of 15CM in the holes;
step three: manufacturing a concrete mould according to the height of the dam and the width of the foundation, wherein the shape of the concrete mould is a shape like a Chinese character '\' 21274, and the concrete mould penetrates through two rows of steel pipes with the outer diameter of 20CM and the inner diameter of 15CM from the upper part to the lower part;
step four: pouring impervious concrete into the concrete mould, waiting for the impervious concrete to solidify, removing the concrete mould, transporting the impervious wall to one side of the dam, and placing the opening outwards when the impervious wall is placed;
step five: constructing wall stones with an angle of 70 degrees with the foundation outside the impervious wall body, and reserving positions for steel pipes penetrating through the impervious wall body when the wall stones are constructed;
step six: fixing one end of a steel bar with the diameter of 15CM in a hole site above the dam by using concrete, penetrating the middle of the steel bar through an impermeable wall body and wall stones, and fixing the lower part of the steel bar in the hole site on the foundation by using concrete;
step seven: and building a layer of capping stone between the top of the dam and the top of the wall stone, pouring the capping stone by using concrete, filling the concrete in the foundation and filling the foundation.
2. The seepage-proofing and water-stopping method for the hydraulic engineering according to claim 1, characterized in that: the punching distance on the dam is determined according to the width of the dam needing to be constructed.
3. The seepage-proofing and water-stopping method for the hydraulic engineering according to claim 1, which is characterized in that: the height of the concrete mould is determined according to the height of a dam needing to be constructed.
4. The seepage-proofing and water-stopping method for the hydraulic engineering according to claim 1, which is characterized in that: the seepage-proof wall body is made of seepage-proof concrete, raw materials comprise ordinary portland cement with the strength not lower than 32.5Mpa and low-hydration-heat cement, the 7-day hydration-heat index of the cement is not higher than 275kJ/kg, early-strength cement with an R character cannot be used, fly ash not lower than II grade is not used, the gradation from 5 to 31.5mm is uniform, machine-broken stone with the mud content not higher than 1% is adopted, medium-coarse sand with the fineness modulus of 2.5 to 3.0 and the mud content not higher than 3% is adopted, calcium formate, polypropylene reticular fiber and seepage-proof fiber are added during manufacturing, and the addition amount of the additive is not higher than 5% of the mass of the cement.
5. The seepage-proofing and water-stopping method for the hydraulic engineering according to claim 1, which is characterized in that: before the wall stone is built, the wall stone materials are manually checked, the used stone materials are checked one by one, the stone materials with large scale weathering at the edges are removed, whether cracks exist on the stone materials are checked, the stone materials with cracks but clean surfaces are broken and used as fillers, the stone materials with large cracks and silt in the cracks are removed, the stone materials need to be intensively cleaned before building, moss, mud and dirt on the surfaces are removed, then the stone materials are washed and soaked by clear water, and the softened parts of the corners are removed after soaking.
6. The seepage-proofing and water-stopping method for the hydraulic engineering according to claim 1, which is characterized in that: when the wall surface stones are built, stones must be kept wet, mortar is paved on a building surface, then the stones are placed, the same layer of the stones is approximately parallel to rise, the built stones face downwards in a large scale and are prevented from shaking, the stones are filled with the mortar, when gaps are large, broken stone slice filling materials are filled when the mortar is filled, the minimum width of a building joint between the stones is not more than 1.5CM, a joint cut between the upper part and the lower part and between the front part and the rear part are staggered, and water seepage of the whole row of wall surface due to one opening is prevented.
7. The seepage-proofing and water-stopping method for the hydraulic engineering according to claim 1, which is characterized in that: before the steel bar is placed in the steel pipe, oil stain, dust, rust and the like on the surface of the steel bar are thoroughly removed, the steel bar is soaked in an antirust agent for about ten minutes, and each liter of the antirust agent adopts 300g of phosphoric acid with the concentration of 85%, 20g of nitric acid with the concentration of 65%, 30g of hydrochloric acid with the concentration of 36.5%, 100g of sodium citrate, 30g of sodium sulfite, 20g of urotropine, 50g of sodium dodecyl benzene sulfonate and 100g of zinc sulfate, and is added into pure water, the total amount is 1L, and the stirring and the mixing are uniform.
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| CN201087334Y (en) * | 2007-05-15 | 2008-07-16 | 江苏省水利科学研究所 | Reservoir bottom and dam body integrated anti-seepage structure |
| CN105040006A (en) * | 2015-08-12 | 2015-11-11 | 无锡阳工机械制造有限公司 | Water-based antirust agent used for electric generator metal cover |
| KR102127377B1 (en) * | 2017-07-10 | 2020-06-26 | 최종선 | Construction Method of Reinforced Earth Retaining Wall |
| CN210031669U (en) * | 2019-03-14 | 2020-02-07 | 杜庆娟 | Water conservancy retaining wall |
| CN110184999B (en) * | 2019-05-05 | 2021-01-05 | 广州中寓建设工程有限公司 | Seepage-proofing reinforcing process for dam foundation of hydraulic engineering dam |
| CN110668761A (en) * | 2019-11-06 | 2020-01-10 | 李秀利 | Concrete special for hydraulic engineering |
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| CN207032148U (en) * | 2017-07-31 | 2018-02-23 | 余启飞 | Hydraulic engineering ecological wall |
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