CN212388473U - Temperature control structure system for dam body in severe cold region - Google Patents
Temperature control structure system for dam body in severe cold region Download PDFInfo
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- CN212388473U CN212388473U CN202021180277.4U CN202021180277U CN212388473U CN 212388473 U CN212388473 U CN 212388473U CN 202021180277 U CN202021180277 U CN 202021180277U CN 212388473 U CN212388473 U CN 212388473U
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 73
- 239000004567 concrete Substances 0.000 claims abstract description 49
- 238000010438 heat treatment Methods 0.000 claims abstract description 28
- 238000009413 insulation Methods 0.000 claims abstract description 16
- 239000002344 surface layer Substances 0.000 claims abstract description 9
- 230000036760 body temperature Effects 0.000 claims abstract description 5
- 239000010410 layer Substances 0.000 claims description 16
- 239000004033 plastic Substances 0.000 claims description 3
- 229920003023 plastic Polymers 0.000 claims description 3
- 239000004793 Polystyrene Substances 0.000 claims description 2
- 229920005830 Polyurethane Foam Polymers 0.000 claims description 2
- 239000011381 foam concrete Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 229920002223 polystyrene Polymers 0.000 claims description 2
- 239000011496 polyurethane foam Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 8
- 238000010276 construction Methods 0.000 abstract description 6
- 238000005286 illumination Methods 0.000 abstract description 3
- 239000012774 insulation material Substances 0.000 abstract 1
- 239000000498 cooling water Substances 0.000 description 3
- 239000004568 cement Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000011382 roller-compacted concrete Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
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Abstract
A temperature control structure system for a dam body in a severe cold region comprises a concrete dam, heat insulation materials on the upper side, the lower side and the top of the concrete dam, a solar heating plate arranged on the lower side of the concrete dam, a water heater arranged in the concrete dam and connected with the solar heating plate through a hot water pipe, hot water generated by the solar heating plate is conveyed to a heating and heat insulation water pipe through a sewer pipe, the hot water is connected with the water heater through a surface layer water intake pipe, high-temperature water on the surface layer in summer is conveyed to the heating and heat insulation water pipe through the sewer pipe to maintain a stable temperature field of the concrete dam, and the stable temperature field of the concrete dam is prevented from being influenced by a dam foundation temperature field. The structure system makes full use of strong illumination in severe cold areas, utilizes the solar water heater to heat up through hot water of the solar water heater, improves the stable temperature field of the dam body, simplifies temperature control procedures, accelerates construction progress, effectively controls the dam body temperature of the concrete dam, thereby reducing or preventing the possibility that the concrete dam cracks or even leaks water, and ensuring the safety of the dam body.
Description
Technical Field
The utility model relates to a severe cold district dam body control by temperature change structural system mainly used control concrete dam's dam body temperature, reduce or prevent dam body fracture.
Background
Temperature control of concrete dams in severe cold regions is always the most difficult in the construction process of the concrete dams, cracks are generated although multiple engineering measures are adopted, and potential safety hazards are brought to engineering. Cracks appear due to severe weather conditions- "cold, hot, wind, dry". The cold is that the average temperature per year in a severe cold area is very low, the average temperature per month in winter is below-10 ℃, the cold tide is frequent all the year round, and the temperature difference between day and night is large; "Hot" means that the temperature is high in summer, and the average temperature is about 20 ℃ in summer; wind refers to severe cold areas with strong wind power, strong wind speed and easy evaporation of water; the term "dry" refers to the climate dryness in spring and autumn in alpine regions, and these climate characteristics are extremely unfavorable for the temperature control and crack prevention of roller compacted concrete. The stable temperature of the dam body is low due to low annual average temperature, and the highest temperature of concrete poured in summer is high, so that the temperature difference of the dam foundation is large (often exceeding the specification), and foundation penetrating cracks are often generated due to large temperature difference of the foundation; the cold tide is frequent all the year round, the temperature difference between day and night is large, and the concrete poured first and the concrete poured later form large temperature difference due to the existence of the intermission period, so that horizontal cracks appear, and the water leakage of the dam body is further caused. Research shows that the tensile strength between horizontal layers is only 41-86% of that of the original concrete, so that the horizontal cracking phenomenon is easy to form. In engineering practice, the upper static dam, the Japanese Yuchuan dam, the Liaoning Guanyin Ge dam, the Songyue dam, the Manchu terrace dam, the Hebei Tao Lin mouth dam, the Iris estuary dam, the Xinjiang Duoli dam and the like of the United states have horizontal cracks, which cause water leakage of the dam body, and the horizontal cracks are all caused by the lower stable temperature field of the dam body in a severe cold area, so that the highest temperature rise of the dam body is reduced by a large amount of temperature control measures in the actual construction process, for example, cooling water comprises first-stage, second-stage or even third-stage cooling water, an ice making station is adopted for making ice, then the ice is added for mixing aggregate, and the like, the cost is high, the construction process is complex, and the cracks are generated on the dam body by carelessness as mentioned above, and the principle is as follows:
temperature stress deltaTemperature of＝E·α·β·R·Δt≤1.2[δAllow for]. To reduce deltaTemperature ofWhere E, α, β, R are all constant values, therefore Δ t needs to be reduced. According to the formula, Δ T ═ Tmax-TStableIn the engineering construction process, T should be controlled as much as possiblemaxHowever, the cost is large, and the cost comprises low-heating cement, ice adding, cold water adding, pre-cooling aggregate mixing concrete and introducing cooling water (first stage, second stage and even third stage) to reduce the delta t, so the investment is large. In addition, in high-temperature seasons, the slightly-careless delta T can exceed the standard, and the concrete cracks due to the fact that the temperature stress is larger than the allowable stress, so that the T is neededStableTo start, increase TStableFurther, smaller Δ t makes δTemperature ofReducing and satisfying the requirements.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a severe cold area dam body control by temperature change structural system is provided.
In order to solve the technical problem, the utility model discloses a technical scheme is: the dam body is added with the following structure or equipment, which comprises a solar heating plate, a water heater connected with the solar heating plate, a dam body heat-insulating layer and heat-insulating temperature-rising hot water pipes (with the interval of 1m multiplied by 1m), so that the heat transfer between the concrete dam body and the bedrock is isolated, and the higher stable temperature field of the dam body of the concrete dam is maintained.
The temperature control structure system for the dam body in the severe cold region comprises a concrete dam 6 and heat insulation layers 5 arranged on the upper side surface, the lower side surface and the upper surface of the concrete dam 6, wherein solar heating plates 1 are arranged on the lower side surface of the concrete dam 6 and outside the heat insulation layers 5, a water heater 3 is arranged inside the concrete dam 6, and the water heater 3 is connected with the solar heating plates 1 through a hot water pipe 2; the water heater 3 is connected with a heating heat insulation water pipe 8 through a sewer pipeline 7, and hot water generated by the solar heating panel 1 is conveyed to the heating heat insulation water pipe 8 through the sewer pipeline 7; the surface layer water intake pipe 4 is connected with the water heater 3, and high-temperature water 10 on the surface layer in summer is conveyed to the heating heat insulation water pipe 8 through the sewer pipeline 7 to maintain the stable temperature field of the concrete dam 6 and prevent the temperature field of the dam foundation 9 from influencing the stable temperature field of the concrete dam 6.
The utility model has the advantages that: the strong illumination of severe cold regions is fully utilized, the solar water heater is utilized, and the hot water of the solar water heater is used for heating the TStableThe temperature is maintained at 25-30 ℃, so that the delta t meets the requirement and the delta is ensuredTemperature of≤[δAllow for]δTemperature of≤[δAllow for]. The structural system heats up through hot water of the solar water heater, improves the stable temperature field of the dam body, simplifies temperature control procedures, accelerates construction progress, effectively controls the temperature of the dam body of the concrete dam, thereby reducing or preventing the possibility that the concrete dam cracks or even leaks water, and ensuring the safety of the dam body
Drawings
Fig. 1 is a temperature control structure system diagram of the dam body in severe cold region of the present invention.
In the figure: 1, a solar heating plate; 2, a hot water pipe; 3, a water heater; 4, a surface water taking pipe; 5, insulating layer; 6, concrete dam; 7, a water discharging pipeline; 8, heating up the heat insulation water pipe; 9, dam foundation; 10 summer surface layer high temperature water.
Detailed Description
The invention will be described in further detail with reference to the following drawings and embodiments:
as shown in fig. 1, the utility model relates to a severe cold district dam body temperature control structure system, including concrete dam 6, on concrete dam 6, the heat preservation 5 at downstream side and top, 6 downstream sides of concrete dam set up solar heating panel 1, the inside water heater 3 that sets up of concrete dam 6, water heater 3 passes through hot-water line 2 and solar heating panel 1 couples, the hot water that produces solar heating panel 1 carries the thermal-insulated water pipe 8 that heaies up through sewer pipe 7, link to each other with water heater 3 through top layer intake pipe 4, carry the thermal-insulated water pipe 8 that heaies up through sewer pipe 7 with surface course high temperature water 10 in summer, maintain the stable temperature field of concrete dam 6, avoid dam foundation 9 temperature field to influence the stable temperature field of concrete dam 6.
The material of the heat-insulating layer 5 can be, but is not limited to, heat-insulating layers such as polyurethane foam, polystyrene board and foam concrete;
the arrangement area of the solar heating panel 1 is calculated according to the stable temperature field of the concrete dam 6;
the heating heat insulation water pipe 8 is made of but not limited to a pvc plastic pipe;
the row spacing between the temperature-rising heat-insulation water pipes 8 is 1.5m multiplied by 1.5m, and 2-3 layers are arranged along the vertical direction of the concrete dam 6;
the surface layer water taking pipe 4 is used for taking high-temperature water 10 on the surface layer in summer so as to overhaul the solar heating panel 1;
when the method is implemented specifically, the method comprises the following steps:
the heat-insulating layers are arranged on the upstream side and the downstream side of the concrete dam body and on the top of the dam body and are used for isolating the dam body from heat exchange with the outside, and the heat-insulating effect is achieved. Then, a solar heating plate is arranged on the downstream side of the dam body, intense illumination of severe cold areas is fully utilized, a temperature field of the concrete dam is kept by hot water of the solar water heater through the solar water heater by using the solar water heater, influence of a low-temperature field of the dam foundation is avoided, a stable temperature field of the concrete dam body is kept at a high temperature, and generally T is setStableThe temperature is maintained at 22-25 ℃, so that the delta t meets the requirement and the delta is ensuredTemperature of≤[δAllow for]δTemperature of≤[δAllow for]。
The above-mentioned embodiments are only used for illustrating the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to implement the present invention accordingly, the scope of the present invention should not be limited by the embodiment, that is, all equivalent changes or modifications made by the spirit of the present invention should still fall within the scope of the present invention.
Claims (8)
1. A temperature control structure system for a dam body in a severe cold region is characterized by comprising a concrete dam (6) and heat insulation layers (5) arranged on the upper side surface, the lower side surface and the upper surface of the concrete dam (6), wherein solar heating plates (1) are arranged on the lower side surface of the concrete dam (6) and outside the heat insulation layers (5), a water heater (3) is arranged inside the concrete dam (6), and the water heater (3) is connected with the solar heating plates (1) through a hot water pipe (2); the water heater (3) is connected with the temperature-rising heat-insulation water pipe (8) through a sewer pipeline (7), and hot water generated by the solar heating panel (1) is conveyed to the temperature-rising heat-insulation water pipe (8) through the sewer pipeline (7); the surface layer water intake pipe (4) is connected with the water heater (3), and high-temperature water (10) on the surface layer in summer is conveyed to the temperature-raising heat-insulation water pipe (8) through the sewer pipeline (7) to maintain the stable temperature field of the concrete dam (6) and prevent the temperature field of the dam foundation (9) from influencing the stable temperature field of the concrete dam (6).
2. The temperature control structure system for the dam body in the severe cold region as claimed in claim 1, wherein the material of the heat insulation layer (5) is polyurethane foam, polystyrene board or foam concrete.
3. The temperature control structure system for the dam body in the severe cold region as claimed in claim 1 or 2, wherein the arrangement area of the solar heating panel (1) is calculated according to the stable temperature field of the concrete dam (6).
4. The temperature control structure system for the dam body in the severe cold region as claimed in claim 1 or 2, wherein the temperature-raising and heat-insulating water pipe (8) is made of pvc plastic pipe.
5. The temperature control structure system for the dam body in the severe cold region as claimed in claim 3, wherein the temperature-raising and heat-insulating water pipe (8) is made of a pvc plastic pipe.
6. The temperature control structure system for the dam body in the severe cold region as claimed in claim 1, 2 or 5, wherein the row distance between the temperature-raising and heat-insulating water pipes (8) is 1.5m x 1.5m, and 2-3 layers are arranged along the vertical direction of the concrete dam (6).
7. The dam body temperature control structure system for severe cold regions as claimed in claim 3, wherein the row spacing between the temperature-raising and heat-insulating water pipes (8) is 1.5m x 1.5m, and 2-3 layers are arranged along the vertical direction of the concrete dam (6).
8. The dam body temperature control structure system for severe cold regions as claimed in claim 4, wherein the row spacing between the temperature-raising and heat-insulating water pipes (8) is 1.5m x 1.5m, and 2-3 layers are arranged along the vertical direction of the concrete dam (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021180277.4U CN212388473U (en) | 2020-06-23 | 2020-06-23 | Temperature control structure system for dam body in severe cold region |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021180277.4U CN212388473U (en) | 2020-06-23 | 2020-06-23 | Temperature control structure system for dam body in severe cold region |
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| CN212388473U true CN212388473U (en) | 2021-01-22 |
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| CN202021180277.4U Active CN212388473U (en) | 2020-06-23 | 2020-06-23 | Temperature control structure system for dam body in severe cold region |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111636383A (en) * | 2020-06-23 | 2020-09-08 | 大连理工大学 | Temperature control structure system for dam body in severe cold region |
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- 2020-06-23 CN CN202021180277.4U patent/CN212388473U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111636383A (en) * | 2020-06-23 | 2020-09-08 | 大连理工大学 | Temperature control structure system for dam body in severe cold region |
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