CN112281768A - Method for repairing spillway high-speed water flow deep large pit - Google Patents
Method for repairing spillway high-speed water flow deep large pit Download PDFInfo
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- CN112281768A CN112281768A CN202011091083.1A CN202011091083A CN112281768A CN 112281768 A CN112281768 A CN 112281768A CN 202011091083 A CN202011091083 A CN 202011091083A CN 112281768 A CN112281768 A CN 112281768A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B8/00—Details of barrages or weirs ; Energy dissipating devices carried by lock or dry-dock gates
- E02B8/06—Spillways; Devices for dissipation of energy, e.g. for reducing eddies also for lock or dry-dock gates
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/003—Injection of material
Abstract
The invention discloses a method for repairing a spillway high-speed water flow deep large pit, which is implemented according to the following steps: step 1, polishing and cleaning the bottom surface of a punched pit; step 2, plugging cracks in the pit; step 3, chiseling an anchoring groove in the pit; step 4, treating the inner surface of the anchoring groove; step 5, filling the punching pit based on the mortise and tenon structure; and 6, protecting the surface of the pit. The repairing method can improve the repairing quality of the deep and large flushing pits on the surface of the spillway caused by erosion damage of high-speed water flow, and enhance the safety and reliability of the spillway during overflowing.
Description
Technical Field
The invention belongs to the technical field of hydraulic structure reinforcement and repair, and relates to a method for repairing a spillway high-speed water flow deep large-size flushing pit.
Background
Spillways are the most common type of outlet structure in hydro-junction projects, and are key structures for ensuring safe and stable operation of a plurality of hydro-junction projects. When the hydraulic engineering is built on a river with large silt content or in the flood season, the river flow is large, so that the flood contains a large amount of silt or other impurities. When the spillway is used for discharging flood and water, under the action of scouring and cavitation of high-speed sandy water flow, the spillway can be eroded and abraded to different degrees, and even serious accident can be caused.
Erosion damage to spillways typically includes: concrete surface erosion cavitation, pit, pitted surface, concrete hollowing, polyurea failure, and the like. The method is characterized in that the concrete surface is subjected to pit flushing, which is a serious one in erosion damage, the damage is caused by complex reasons, firstly, the flow state of high-speed water flow is complex, the requirements on the erosion resistance, the wear resistance, the durability, the flatness, the roughness and the like of an overflow surface are high, secondly, the hydraulic engineering with early construction time is adopted, and as the construction quality and the technical level at the time are poor, the grade of the concrete cannot meet the design requirements, and the compactness and the flatness of the concrete are poor. Therefore, in some hydraulic projects of early construction age, the erosion damage of the spillway is serious. In these hydraulic engineering, careful inspection of the spillway is needed after each flood, and the erosion damaged parts are repaired in time to avoid potential safety hazards. At present, a plurality of design and construction units propose some repairing methods, but the effect is not ideal, so that the repairing method still has some difficulties for the repairing damage of the spillway erosion caused by high-speed water flow.
At present, the hydraulic concrete building is mainly repaired by cracks, surface local damage, leakage and the like, high-speed water flow and sand-containing water flow are difficult to wash and repair, and most of repair materials are peeled off and cracked after flood discharge. In general, there are three types of methods for repairing cracks: direct filling, grout injection and direct surface coating. Patent ZL201710003539.6 has invented a wide crack repair method of concrete, aims at improving the repair efficiency of wide crack of concrete, security and reliability that the enhancement project operates. But at present, no effective method for repairing spillways by high-speed water flow and pit flushing exists.
Disclosure of Invention
The invention aims to provide a method for repairing a deep and large flushing pit on the surface of a spillway, which can improve the repairing quality of the deep and large flushing pit on the surface of the spillway caused by erosion damage of high-speed water flow and enhance the safety and reliability of the spillway during overflowing.
The technical scheme adopted by the invention is that the method for repairing the spillway high-speed water flow deep large flushing pit is implemented according to the following steps:
Chiseling the damaged concrete around the flushing pit and at the bottom by adopting a pneumatic shovel, polishing the interior of the flushing pit by using an angle grinder, and cleaning loose surfaces, silt and dirt in the flushing pit by using a steel wire brush and a high-pressure air gun to ensure that the bottom of the flushing pit is a plane;
Checking the position and depth of the crack in the pit punched after the treatment in the step 1, and plugging the crack in the pit punched;
step 3, chiseling anchoring grooves in the punched pits
Chiseling anchoring grooves at the bottom of the concrete in the pit plugged in the step 2, and dividing the bottom surface of the pit into uniformly distributed squares by the anchoring grooves;
step 4, treating the inner surface of the anchoring groove
Cleaning up impurities in the square groove by using a high-pressure air gun, heating and drying the anchoring groove by using a hot air gun, and brushing a layer of epoxy daub on the bottom and two sides of the anchoring groove after the treatment is finished;
step 5, filling the pits
After the epoxy mortar in the step 4 is solidified, filling the epoxy mortar into the flushing pit, compacting and finishing the epoxy mortar into a smooth surface, ensuring that part of the epoxy mortar is tightly extruded and filled in the anchoring groove, and leveling the surface of the epoxy mortar, and repeating the operations from the step 3 to the step 5 on the surface of the unfilled epoxy mortar until the epoxy mortar is filled to the surface of the flushing pit;
step 6, pit surface protection
And (3) cleaning the base surface of the concrete bottom plate around the flushing pit by using a high-pressure air gun, ensuring the base surface to be dry, coating epoxy daub on the surface of the flushing pit treated in the step (5) for protection, and ensuring the surface of the flushing pit to be smooth after coating.
The present invention is also characterized in that,
the range of chiseling concrete in the step 1 is as follows: at least 5cm from the surface of the punch pit, d1, and at least 5cm from the bottommost portion of the punch pit, d 2.
The specific process of the step 2 is as follows:
(1) when the width of the crack is not more than 2mm, coating the joint compound on the surface of the crack for filling the crack and sealing the crack, wherein the width of the coated joint compound is 5cm on each of two sides of the crack, and coating for three times;
(2) when the width of the crack is larger than 2mm and not larger than 5mm, chiseling sidelines are scribed at two sides of the crack according to the direction of the axis of the crack, the distance d3 between the chiseling sidelines and the axis of the crack is 5cm, slitting is carried out along the chiseling sidelines, the concrete of the crack in the chiseling sidelines is chiseled by an electric pick, and the chiseling depth h1 is not more than 20 cm;
(3) when the width of the crack is larger than 5mm, firstly, cement slurry is used for filling and filling the crack, then a steel bar is driven into the cement slurry to reinforce the crack, the horizontal distance d4 between the center line of the steel bar and the crack of the concrete is 10-20cm, the included angle theta between the steel bar and the crack of the concrete is 50-60 degrees, the depth h2 of the steel bar inserted into the cement slurry is not less than 25cm, finally, the surface of the filled and reinforced crack is cleaned, epoxy bottom base fluid is coated, and epoxy mortar is filled and smeared for leveling.
The properties of the epoxy base fluid are as follows: the compressive strength is 71.8Mpa, the wet bonding strength is 4.6Mpa, the dry bonding strength is 6.1Mpa, and the compressive coefficient before and after freeze-thaw cycle is 99.80%.
In the step 3, the width d5 of the anchoring groove is 20mm, the depth h3 is 20mm, and the distance d6 between adjacent anchoring grooves is 150 mm.
In the step 4, the heating temperature of the hot air gun is 80-100 ℃.
The epoxy daub has the following properties: the compressive strength is 87.7Mpa, the tensile strength is 18.3Mpa, and the bonding strength with the acid-resistant brick is 8 Mpa.
And (3) the filling thickness h4 of the epoxy mortar in the step 5 is not more than 100 mm.
The invention has the beneficial effects that:
(1) according to the repairing method for the deep and large flushing pit of the spillway high-speed water flow, the flushing pit is repaired by using materials such as epoxy mortar, epoxy cement and the like which have good impact resistance and wear resistance and high strength and are mature, the rapid forming can be realized, an effective way is provided for rapid emergency repair and reinforcement of the spillway, the operation power generation benefit of hydraulic engineering is ensured, and the repairing problem of the flushing pit on the surface of the spillway caused by the high-speed water flow is effectively solved;
(2) the method for repairing the spillway high-speed water flow deep and large pit has the advantages of simple and feasible operation, convenient construction, good repairing effect, stronger practicability, wide application range, good economic benefit and better prospect in the field of hydraulic engineering reinforcement and repair;
(3) according to the method for repairing the spillway high-speed water flow deep and large pit, the mortise and tenon structure is adopted, the bonding capacity between the repair mortar and the old concrete is increased, the reinforcement mortar can be ensured to better resist the high-speed water flow and the sand-containing water flow, and the stability and the safety of the spillway during later-period work can be effectively improved;
(4) according to the method for repairing the high-speed water flow deep and large flushing pit of the spillway, the adopted repairing materials are all non-toxic, pollution-free, economic and environment-friendly materials, the water quality is not affected, the durability of concrete of the spillway can be effectively improved, and the service life of the spillway is prolonged.
Drawings
FIG. 1 is a schematic view of cleaning and leveling a counter pit in a repairing method of a spillway high-speed water flow deep large-size counter pit according to the present invention;
FIG. 2 is a schematic view of the treatment of the cracks on the inner surface of the deep and large flushing pit in the method for repairing the spillway high-speed water flow deep and large flushing pit according to the present invention;
FIG. 3 is a schematic view of the treatment of a crack having an inner width not less than 2mm in the spillway high-speed water flow deep large pit repairing method according to the present invention;
FIG. 4 is a schematic view of the treatment of deep cracks inside a deep-level water pit in the method for repairing a spillway high-speed water flow deep large-scale water pit according to the present invention;
FIG. 5 is a schematic view of the anchoring grooves in the spillway interior in the method for repairing a deep and large spillway with high-speed water flow according to the present invention;
FIG. 6 is a schematic diagram of filling a deep large flushing pit with high-speed water flow in a spillway according to the repairing method of the present invention.
In the figure, 1 is a pit punching, and 2 is an anchoring groove.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
The invention relates to a method for repairing a spillway high-speed water flow deep large pit, which is implemented according to the following steps:
The concrete damaged around the pit and at the bottom is chiseled by a pneumatic shovel, and as shown in fig. 1, the chiseling range of the concrete is as follows: the distance d1 from the surface of the flushing pit is at least 5cm, the distance d2 from the bottommost part of the flushing pit is at least 5cm, the interior of the flushing pit is polished by using an angle grinder, and then a steel wire brush and a high-pressure air gun are used for cleaning the loose surface, silt and dirt in the flushing pit, so that the bottom of the flushing pit is a plane;
Checking the position and depth of the crack in the pit punched after the treatment in the step 1, and plugging the crack in the pit punched;
(1) as shown in fig. 2, when the width of the crack is not more than 2mm, coating a jointing agent on the surface of the crack for filling the crack and sealing the crack, wherein the width of the coating of the jointing agent is 5cm on each of two sides of the crack, and coating for three times;
(2) as shown in fig. 3, when the width of the crack is larger than 2mm and not larger than 5mm, regular-shaped chiseling sidelines are scribed at two sides of the crack according to the trend of the axis of the crack, chiseling is performed, the distance d3 between the chiseling sidelines and the axis of the crack is 5cm, slitting is performed along the chiseling sidelines, the crack concrete in the chiseling sidelines is chiseled by adopting an electric pick, and the chiseling depth h1 is not more than 20 cm;
(3) as shown in fig. 4, when the width of the crack is larger than 5mm, firstly, cement slurry is used for filling and filling the crack, then a steel bar is driven into the cement slurry to reinforce the crack, the horizontal distance d4 between the center line of the steel bar and the crack of the concrete is 10-20cm, the included angle theta between the steel bar and the crack of the concrete is 50-60 degrees, the depth h2 of the steel bar inserted into the cement slurry is not less than 25cm, finally, the surface of the filled and reinforced crack is cleaned, epoxy base fluid is coated and epoxy mortar is filled for leveling, the main performance index of the epoxy base fluid is shown in table 1, and the main performance index of the epoxy mortar is shown in table 2;
step 3, chiseling anchoring grooves in the punched pits
Chiseling anchoring grooves at the bottom of the concrete in the punching pit blocked in the step 2, wherein the anchoring grooves divide the bottom surface of the punching pit into uniformly distributed squares, the width d5 of each anchoring groove is 20mm, the depth h3 of each anchoring groove is 20mm, and the distance d6 between every two adjacent anchoring grooves is 150mm as shown in fig. 5;
step 4, treating the inner surface of the anchoring groove
Because the epoxy daub is sensitive to the humidity of a construction surface and the ambient temperature, the increase speed of the strength of a bonding surface and mortar can be influenced by the humidity of a base surface and low external temperature. Therefore, the high-pressure air gun is used for cleaning sundries in the square groove, the hot air gun is used for heating and drying the anchoring groove, the heating temperature is 80-100 ℃, after the treatment is finished, a layer of epoxy daub is coated on the bottom and two sides of the anchoring groove, and the main performance indexes of the epoxy daub are shown in table 3;
step 5, filling the pits
After the epoxy mortar in the step 4 is solidified, filling the epoxy mortar into the flushing pit, compacting the epoxy mortar, compacting and finishing the epoxy mortar into a smooth surface, wherein the filling thickness h4 of the epoxy mortar is not more than 100mm, ensuring that part of the epoxy mortar is compactly extruded and filled in the anchoring groove, and leveling the surface of the epoxy mortar, and repeating the operations from the step 3 to the step 5 on the surface of the unfilled epoxy mortar until the epoxy mortar is filled into the flushing pit surface if the epoxy mortar is not filled into the flushing pit surface, wherein the main performance indexes of the epoxy mortar are shown in a table 2;
step 6, pit surface protection
And (3) cleaning the base surface of the concrete bottom plate around the flushing pit by using a high-pressure air gun, ensuring the base surface to be dry, coating epoxy daub on the surface of the flushing pit treated in the step (5) for protection, and ensuring the surface of the flushing pit to be flat after coating, wherein the main performance indexes of the epoxy daub are shown in a table 3.
TABLE 1 main Performance indices of epoxy base fluids
| Item | Performance index |
| Compressive strength | 71.8MPa |
| Wet bond strength | 4.6MPa |
| Dry bond strength | 6.1MPa |
| Compression coefficient before and after freeze-thaw cycle | 99.80％ |
TABLE 2 Main Properties of epoxy mortars
TABLE 3 main Properties of epoxy mastic
| Item | Performance index |
| Compressive strength | 87.7MPa |
| Tensile strength | 18.3MPa |
| Bonding strength with acid-resistant brick | 8MPa |
Through the mode, the repairing method for the spillway high-speed water flow deep and large flushing pit effectively solves the repairing problem of the flushing pit on the surface of the spillway caused by high-speed water flow, and the repairing method can be used for repairing the flushing pit by using materials such as epoxy mortar, epoxy cement and the like which have good impact resistance and wear resistance and high strength and are mature, can be quickly formed, provides an effective way for quickly rescuing and reinforcing the spillway, and ensures the running power generation benefit of hydraulic engineering; meanwhile, the wood mortise and tenon structures which are used in large quantities in ancient buildings in China are used for reference, the bonding capacity between the repair mortar and old concrete is increased, the reinforcement mortar can better resist high-speed water flow and sand-containing water flow, the stability and the safety of the spillway in later-stage work can be effectively improved, and the method has the advantages of simple and feasible operation, convenience in construction, good repair effect and high practicability.
Claims (8)
1. A method for repairing a spillway high-speed water flow deep large pit is characterized by comprising the following steps:
step 1, polishing and cleaning the bottom surface of a punched pit
Chiseling the damaged concrete around the flushing pit and at the bottom by adopting a pneumatic shovel, polishing the interior of the flushing pit by using an angle grinder, and cleaning loose surfaces, silt and dirt in the flushing pit by using a steel wire brush and a high-pressure air gun to ensure that the bottom of the flushing pit is a plane;
step 2, plugging cracks in the pit
Checking the position and depth of the crack in the pit punched after the treatment in the step 1, and plugging the crack in the pit punched;
step 3, chiseling anchoring grooves in the punched pits
Chiseling anchoring grooves at the bottom of the concrete in the pit plugged in the step 2, and dividing the bottom surface of the pit into uniformly distributed squares by the anchoring grooves;
step 4, treating the inner surface of the anchoring groove
Cleaning up impurities in the square groove by using a high-pressure air gun, heating and drying the anchoring groove by using a hot air gun, and brushing a layer of epoxy daub on the bottom and two sides of the anchoring groove after the treatment is finished;
step 5, filling the pits
After the epoxy mortar in the step 4 is solidified, filling the epoxy mortar into the flushing pit, compacting and finishing the epoxy mortar into a smooth surface, ensuring that part of the epoxy mortar is tightly extruded and filled in the anchoring groove, and leveling the surface of the epoxy mortar, and repeating the operations from the step 3 to the step 5 on the surface of the unfilled epoxy mortar until the epoxy mortar is filled to the surface of the flushing pit;
step 6, pit surface protection
And (3) cleaning the base surface of the concrete bottom plate around the flushing pit by using a high-pressure air gun, ensuring the base surface to be dry, coating epoxy daub on the surface of the flushing pit treated in the step (5) for protection, and ensuring the surface of the flushing pit to be smooth after coating.
2. The method for repairing a spillway high-speed water flow deep large punching pit according to claim 1, wherein the concrete is chiseled in the step 1 in the following range: at least 5cm from the surface of the punch pit, d1, and at least 5cm from the bottommost portion of the punch pit, d 2.
3. The method for repairing a spillway high-speed water flow deep large pit according to claim 1, wherein the specific process of the step 2 is as follows:
(1) when the width of the crack is not more than 2mm, coating the joint compound on the surface of the crack for filling the crack and sealing the crack, wherein the width of the coated joint compound is 5cm on each of two sides of the crack, and coating for three times;
(2) when the width of the crack is larger than 2mm and not larger than 5mm, chiseling sidelines are scribed at two sides of the crack according to the direction of the axis of the crack, the distance d3 between the chiseling sidelines and the axis of the crack is 5cm, slitting is carried out along the chiseling sidelines, the concrete of the crack in the chiseling sidelines is chiseled by an electric pick, and the chiseling depth h1 is not more than 20 cm;
(3) when the width of the crack is larger than 5mm, firstly, cement slurry is used for filling and filling the crack, then a steel bar is driven into the cement slurry to reinforce the crack, the horizontal distance d4 between the center line of the steel bar and the crack of the concrete is 10-20cm, the included angle theta between the steel bar and the crack of the concrete is 50-60 degrees, the depth h2 of the steel bar inserted into the cement slurry is not less than 25cm, finally, the surface of the filled and reinforced crack is cleaned, epoxy bottom base fluid is coated, and epoxy mortar is filled and smeared for leveling.
4. The method for repairing a spillway high-speed water flow deep large wash pit according to claim 3, wherein the properties of the epoxy base fluid are as follows: the compressive strength is 71.8Mpa, the wet bonding strength is 4.6Mpa, the dry bonding strength is 6.1Mpa, and the compressive coefficient before and after freeze-thaw cycle is 99.80%.
5. The method for repairing a spillway high-speed water flow deep large wash pit according to claim 1, wherein in the step 3, the width d5 of the anchor groove is 20mm, the depth h3 is 20mm, and the distance d6 between adjacent anchor grooves is 150 mm.
6. The method for repairing a spillway high-speed water flow deep large wash pit according to claim 1, wherein the heating temperature of the hot air gun in the step 4 is 80-100 ℃.
7. The method for repairing a spillway high-speed water flow deep large punching pit according to claim 1, wherein the properties of the epoxy mastic are as follows: the compressive strength is 87.7Mpa, the tensile strength is 18.3Mpa, and the bonding strength with the acid-resistant brick is 8 Mpa.
8. The method for repairing a spillway high-speed water flow deep large pit according to claim 1, wherein the filling thickness h4 of the epoxy mortar in the step 5 is not more than 100 mm.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113789764A (en) * | 2021-09-03 | 2021-12-14 | 华能澜沧江水电股份有限公司 | Method for repairing surface pit of hydraulic tunnel of hydropower station |
| CN114541337A (en) * | 2022-04-14 | 2022-05-27 | 重庆交通大学 | Method for repairing damage of abrasion section of debris flow drainage groove |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120110940A1 (en) * | 2010-11-04 | 2012-05-10 | Garland Industries, Inc. | Method and apparatus for repairing concrete |
| CN205893847U (en) * | 2016-08-08 | 2017-01-18 | 广东工业大学 | Cement concrete pavement's repair structure |
| CN106522077A (en) * | 2016-11-10 | 2017-03-22 | 曹立强 | Rapid compounding repair method of pavement |
| CN106759116A (en) * | 2017-01-04 | 2017-05-31 | 中国电建集团华东勘测设计研究院有限公司 | A kind of method for repairing and mending in the roomy crack of concrete |
-
2020
- 2020-10-13 CN CN202011091083.1A patent/CN112281768A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120110940A1 (en) * | 2010-11-04 | 2012-05-10 | Garland Industries, Inc. | Method and apparatus for repairing concrete |
| CN205893847U (en) * | 2016-08-08 | 2017-01-18 | 广东工业大学 | Cement concrete pavement's repair structure |
| CN106522077A (en) * | 2016-11-10 | 2017-03-22 | 曹立强 | Rapid compounding repair method of pavement |
| CN106759116A (en) * | 2017-01-04 | 2017-05-31 | 中国电建集团华东勘测设计研究院有限公司 | A kind of method for repairing and mending in the roomy crack of concrete |
Non-Patent Citations (3)
| Title |
|---|
| 李海东: ""环氧类材料在下硐大坝溢流面修复中的应用"", 《山东工业技术》 * |
| 罗国强等: "《混凝土与砌体结构裂缝控制技术》", 31 July 2006, 中国建材工业出版社 * |
| 蒋元駉等: "《混凝土工程病害与修补加固》", 31 July 1996, 海洋出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113789764A (en) * | 2021-09-03 | 2021-12-14 | 华能澜沧江水电股份有限公司 | Method for repairing surface pit of hydraulic tunnel of hydropower station |
| CN114541337A (en) * | 2022-04-14 | 2022-05-27 | 重庆交通大学 | Method for repairing damage of abrasion section of debris flow drainage groove |
| CN114541337B (en) * | 2022-04-14 | 2024-03-29 | 重庆交通大学 | Method for repairing damage of abrasion section of debris flow drainage groove |
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