Abstract
In the process of sustainable development within modern agriculture, in order to ensure that agricultural production has adequate water resources, canal lining (CL) is often used to transport water in order to reduce water seepage, thus promoting the sustainable utilization of water resources. However, due to the influence of the terrain, environment, human factors and other factors, the CL often suffers a certain degree of damage. Therefore, it is necessary to evaluate the serviceability of the CL, so to realize the sustainable use of the CL strategy. Aiming at the weight assignment of CL evaluation indices that are subjective and not combined with actual index data, a weight calculation method based on the Analytic Hierarchy Process (AHP)–simple correlation function (SCF) method was proposed, and game theory was used to achieve combination weighting. For the evaluation indices with the characteristics of fuzziness and randomness, the cloud model (CM) was used to comprehensively consider these characteristics in order to realize the evaluation. Finally, a method to measure serviceability of CL based on AHP–SCF–CM was proposed. Taking a CL project in China as an example, this method was used to evaluate the serviceability of the CL. The evaluation result showed that the serviceability of the CL was poor, and the qualitative evaluation result was consistent with the actual damage condition of the project; meanwhile, a comparative study was performed in combination with the AHP–Entropy Weight (EW)–unascertained measurement theory (UMT). The quantitative evaluation results of the two methods displayed the same grade of serviceability, which verifies that the method proposed in this paper is more reasonable, objective and feasible from both qualitative and quantitative perspectives. Furthermore, the evaluation results lay the foundation for subsequent maintenance and fault prevention of the canal.
Highlights
With the rapid development of China’s economy and society and the rapid increase in the population, the problem of insufficient water supply for industry, agriculture and everyday life is becoming increasingly serious [1,2]
The evaluation results of the method proposed in this paper are consistent with those of the comparative study method; from the perspective of the calculation process, the calculation complexity of the unascertained measurement theory (UMT) is greater than that of the cloud model (CM), and the fuzziness of the evaluation index is not effectively considered, which highlights the rationality and appropriateness of the method proposed in this paper
In order to understand the actual operating status and damage of the canal lining (CL) over time, and to overcome the shortcomings of the existing CL serviceability evaluation method, an evaluation method based on Analytical Hierarchy Process (AHP)–simple correlation function (SCF)–CM is proposed
Summary
With the rapid development of China’s economy and society and the rapid increase in the population, the problem of insufficient water supply for industry, agriculture and everyday life is becoming increasingly serious [1,2]. River irrigation area project to divert water from the river to the irrigation areas through canal lining This can effectively alleviate the agricultural irrigation problem, improve the overall grain output of the country and promote the sustainable development of the regional ecological environment. A concrete lining can effectively reduce water leakage during water transportation and increase the water utilization coefficient of the canal system [4], at the same time, concrete is prone to cracks due to plastic shrinkage and drying shrinkage, which seriously affects the serviceability of the CL. By using operational research to carry out weight assignment and decision analysis on the evaluation indicators (concrete lining plate cracking, etc.) of the CL, and combining with evaluation methods, the evaluation of the serviceability of the CL can be realized
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