Method and system for intelligently controlling temperature of concretes of dam under construction

Abstract

The invention discloses a method and system for intelligently controlling temperature of concretes of a dam under construction. The system comprises a control device which communicates with a heat exchanging device and a heat exchanging auxiliary device, wherein the heat exchanging device is arranged at inner part or surface of the concrete dam, and is used for exchanging heat with the concrete dam and transmitting collected temperature information of the concrete dam to the control device; the heat exchanging auxiliary device inputs a heat exchanging medium to the heat exchanging device and outputs the medium from the heat exchanging device after the heat exchange; the control device is used for controlling the heat exchanging auxiliary device; and the control device can input a temperature control strategy of each casting bin. By the system and method disclosed by the invention, the temperature of the concrete dam can be detected in real time automatically, individualized temperature control strategies are provided to different casting bins, intelligent learning is performed according to actual conditions on site, and concrete thermal parameters which are the most accurate and realistic are selected for each casting bin, so that the precise control on water flow capacity and/or temperature can be realized, the precision for controlling the concrete dam temperature is high, the data is reliable, labour and water costs can be greatly reduced, and the anti-cracking effect of the dam is good.

Description

technical field [0001] The invention relates to an intelligent temperature control method and system for concrete of a dam under construction, in particular to an intelligent temperature control of concrete water flow during the pouring process of a high concrete dam. Background technique [0002] For extra-high arch dams, the focus of anti-cracking during the construction period is concrete temperature control. The temperature problem of arch dam concrete should be solved mainly from two aspects: controlling temperature and improving restraint. From the perspective of temperature control, the concrete pouring temperature, the maximum concrete temperature and the final stable temperature are three characteristic temperatures, and the maximum temperature is equal to the pouring temperature plus the temperature rise of the heat of hydration. The final stable temperature depends on the local climate conditions and the structural form of the dam body, so the main control in eng...

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Problems solved by technology

[0008] (2) The existing water system has poor precision, low efficiency, low data reliability, long collection time interval, and slow information feedback, which often lead to unsatisfactory concrete temperature control;

[0009] (3) The existing temperature control does not have an automatic temperature control acquisition system for concrete dams under construction, and there is no specific control strategy

It is often impossible to accurately control the temperature of the dam concrete near the design temperature curve, and manual measurement and control are often not real-time, resulting in a large deviation between the actual dam temperature control and the expected

Therefore, during the construction of the dam, when the insulation effect is not increased, or when a cold wave suddenly encounters, the anti-cracking effect is often poor, which may easily lead to cracking and damage of the dam

[0010] (4) In the existing technology, when the temperature of concrete dams is manually controlled, it is also difficult to achieve coordinated control of the overall temperature of multiple dam sections of the dam, and it is difficult to refine and individualize the temperature control of concrete in different dam sections

[0011] (5) In the existing temperature control technology, the control method is single, the interface between the detection equipment and the control equipment is single, and the equipment is basically not interconnected, which brings difficulties and inconveniences to control the temperature of the dam concrete

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