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Research on the Stability and Support Effect of Earth Section of Hydraulic Tunnel Based on FLAC 3D 基于 FLAC 3D 的水工隧道土方段稳定性与支护效果研究
Pub Date : 2023-10-20 DOI: 10.56028/aetr.8.1.490.2023
Jianwen Zhu, Juan Li, Fei Ma, Kezhong Wang
The stress of the surrounding rock of hydraulic tunnel can produce a stress load on the lining body, which may cause the crack failure of the lining. The distribution and deformation characteristics play a key role in ensuring the long-term stability of tunnels. Therefore, an analysis of the distribution characteristic is of great significance. This paper takes the branch tunnel in the Yellow River Diversion Project of central Shanxi as an entity for modeling, and uses the finite difference program FLAC3D for analysis and calculation. The research results show that before the support is strengthened, the compressive stress of feet-lock bolts has exceeded the compressive strength of the bolts, with obvious stress concentration at the arch feet; the deformation mainly occurs on the vault and the bottom plate; after strengthening the support, the deformation of the steel arch prop, the axial force of the steel arch prop, and the maximum tensile stress of the anchor rods are all reduced. The stable support effect can meet the requirements of construction and later operation.
水工隧洞围岩的应力会对衬砌体产生应力载荷,从而导致衬砌开裂破坏。其分布和变形特征对确保隧道的长期稳定性起着关键作用。因此,对其分布特征进行分析具有重要意义。本文以山西中部引黄工程支洞为实体进行建模,采用有限差分程序 FLAC3D 进行分析计算。研究结果表明,支护加固前,锁脚螺栓的压应力已超过螺栓的抗压强度,拱脚处应力集中明显,变形主要发生在拱顶和底板上;支护加固后,钢拱托变形、钢拱托轴向力、锚杆最大拉应力均有所减小。稳定的支护效果可以满足施工和后期运营的要求。
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引用次数: 0
Design and Development of Wind Power Refined Simulation Software 风力发电精细模拟软件的设计与开发
Pub Date : 2023-10-19 DOI: 10.56028/aetr.8.1.406.2023
Xuanhui Zhao
A challenge to the steady operation of the system as well as the design, operation, and maintenance of wind power is posed by the wind power industry's rapid development and the rate at which wind power is incorporated into the power system. This work creates high-quality simulation software for wind power to address the complicated modeling requirements brought on by significant wind power penetration. The software implements the functions of fine modeling, offline simulation, real-time simulation, and data analysis and uses Python, Shell, and C++ language programming as its primary programming languages. Additionally, to confirm the software's functionality, this study employs OpenFAST single-unit and three-unit wind field samples. The reality demonstrates how easily real-time simulation software can be implemented and how well it does so. Software also has a cheap time and economic cost, and its application value is considerable.
风电行业的快速发展以及风电融入电力系统的速度对系统的稳定运行以及风电的设计、运行和维护提出了挑战。这项工作为风电创建了高质量的仿真软件,以解决风电大量渗透带来的复杂建模要求。该软件实现了精细建模、离线仿真、实时仿真和数据分析等功能,使用 Python、Shell 和 C++ 语言作为主要编程语言。此外,为了证实该软件的功能,本研究采用了 OpenFAST 单机组和三机组风场样本。现实情况表明,实时模拟软件的实施非常容易,而且效果很好。软件还具有低廉的时间和经济成本,其应用价值相当可观。
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引用次数: 0
Research on Optimal Operation of Substation Self-consumption Load Considering Uncertainty 考虑不确定性的变电站自耗负荷优化运行研究
Pub Date : 2023-10-19 DOI: 10.56028/aetr.8.1.437.2023
Lili Jiang, Liang Kong, Xiaoqing Su, Jiansheng Huang, Yin Xia
Under the goal of "double carbon", in order to reduce the power consumption, reduce the cost of carbon emission and increase the utilization rate of renewable energy, we propose the optimal operation method of substation self-powered load considering uncertainty. The optimal operation model of substation is established with the objective function of minimizing the operating cost, carbon emission cost and load power variance. The optimal operation strategy of the substation is solved by the affiliation function and particle swarm algorithm, and at the same time, the starting and stopping situations of each load of the substation are solved according to integer planning. A substation in Henan Province is analyzed as an example, and the results show that the method has obvious advantages in reducing the cost of electricity consumption, carbon emission cost, and peak-to-valley difference of the power grid when considering different objectives for optimization comparison under the consideration of photovoltaic and time-sharing tariffs.
在 "双碳 "目标下,为降低电能消耗、减少碳排放成本、提高可再生能源利用率,我们提出了考虑不确定性的变电站自供电负荷优化运行方法。以运行成本最小化、碳排放成本最小化和负荷功率方差最小化为目标函数,建立了变电站最优运行模型。利用隶属函数和粒子群算法求解变电站的最优运行策略,同时根据整数规划求解变电站各负荷的启停情况。以河南省某变电站为例进行分析,结果表明,该方法在考虑光伏电价和分时电价的情况下,对不同目标进行优化比较,在降低用电成本、碳排放成本、电网峰谷差等方面具有明显优势。
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引用次数: 0
Review on remanufacturability evaluation of retired products 退役产品可再制造性评估审查
Pub Date : 2023-10-19 DOI: 10.56028/aetr.8.1.429.2023
Jia Wang, Zhihai Cai, Jukun Yao, Dan Xu, Mengjia Shi, Jia Sun
The uncertainty of recycling waste products affects the remanufacturing of products. Therefore, whether waste products can be remanufactured has become a key issue. Remanufacturability evaluation is an important part of the remanufacturing process of waste products, which directly determines the service safety and reliability of remanufactured products. Based on the research and review of a large number of literatures, this paper studies the current research hotspots and main research achievements of remanufacturing evaluation, and summarizes the existing achievements from the aspects of evaluation objects, evaluation directions and evaluation methods. Through research, it is found that most of the remanufacturability currently selects economic, technical, environmental and other evaluation grades, constructs corresponding evaluation index system, assigns weight to each index, and finally obtains evaluation conclusions through hierarchical analysis and entropy method.
废品回收的不确定性影响了产品的再制造。因此,废旧产品能否再制造成为一个关键问题。可再制造性评价是废旧产品再制造过程中的重要环节,直接决定了再制造产品的使用安全性和可靠性。本文在研究和查阅大量文献的基础上,研究了当前再制造评价的研究热点和主要研究成果,从评价对象、评价方向和评价方法等方面总结了现有成果。通过研究发现,目前再制造性大多选取经济、技术、环境等评价等级,构建相应的评价指标体系,赋予各指标权重,最后通过层次分析法和熵值法得出评价结论。
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引用次数: 0
The Construction of Social Cooperation System and Its Application in the Location Selection of Tourism Equipment Manufacturing Base under Mobile Internet 移动互联网下社会合作体系的构建及其在旅游装备制造基地选址中的应用
Pub Date : 2023-10-19 DOI: 10.56028/aetr.8.1.444.2023
Jianzhu Sun
To study the application of social collaboration system in Tourism Equipment Manufacturing base selection under mobile Internet, firstly, Spring MVC framework and Activiti workflow engine technology are adopted to analyze the requirements of base location selection system based on the design idea and implementation method of mobile Internet base location selection system. Then the base site selection system based on social collaboration system is designed. Finally, the system is tested in user information management, site data management and site selection process management modules. The Activiti process framework can realize the business process modeling of the system, and can effectively help the site selection personnel to carry out site selection planning. At the same time, site selection personnel can carry out online interaction, facilitate site selection personnel to conduct on-site operations to obtain real-time data, and reduce workload and information errors, and improve the speed and quality of site selection under the design of mobile Internet. Therefore, the social cooperation model based on mobile Internet can reduce the cost of site selection and provide a basis for site selection.
为研究社交协作系统在移动互联网下旅游装备制造基地选址中的应用,首先采用Spring MVC框架和Activiti工作流引擎技术,根据移动互联网基地选址系统的设计思路和实现方法,分析基地选址系统的需求。然后设计了基于社交协作系统的基地选址系统。最后,从用户信息管理、基地数据管理、选址流程管理等模块对系统进行了测试。Activiti 流程框架实现了系统的业务流程建模,能有效帮助选址人员进行选址规划。同时,选址人员可以进行在线互动,方便选址人员进行现场操作获取实时数据,并减少工作量和信息错误,提高移动互联网设计下的选址速度和质量。因此,基于移动互联网的社会合作模式可以降低选址成本,为选址提供依据。
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引用次数: 0
Analysis on the construction and application of comprehensive evaluation index system of construction quality of power transmission and transformation project 输变电工程施工质量综合评价指标体系构建及应用分析
Pub Date : 2023-10-19 DOI: 10.56028/aetr.8.1.413.2023
Jianxun Zhang, Tangxiao Lin
As the basic project of urban construction and development, power transmission and transformation project mainly provides sufficient power resources for urban residents, so the construction quality of the project determines the work efficiency and service quality of the power industry. With the continuous development of social economy and science and technology, the number of power transmission and transformation projects in our country is increasing, the scope of project construction is getting larger and larger, and the actual construction period is getting smaller and smaller, which leads to the quality of the project itself is not guaranteed. Therefore, on the basis of understanding the construction status of power transmission and transformation projects, this paper mainly explores how to construct the comprehensive evaluation index system of power transmission and transformation projects construction quality, and analyzes the corresponding management measures from the perspective of project construction.
输变电工程作为城市建设与发展的基础工程,主要是为城市居民提供充足的电力资源,因此工程的施工质量决定了电力行业的工作效率与服务质量。随着社会经济和科学技术的不断发展,我国输变电工程的数量越来越多,工程建设的范围越来越大,而实际施工的工期却越来越短,这就导致了工程本身的质量得不到保障。因此,本文在了解输变电工程施工现状的基础上,主要探讨了如何构建输变电工程施工质量综合评价指标体系,并从工程施工的角度分析了相应的管理措施。
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引用次数: 0
Research on environmental protection and water and soil conservation technology of power grid engineering mechanized construction based on modular design 基于模块化设计的电网工程机械化施工环境保护与水土保持技术研究
Pub Date : 2023-10-19 DOI: 10.56028/aetr.8.1.421.2023
Yakun Tan, Guo Li, Jianli Tang, Wenfeng Peng, Hai Wang, Jiayi Kong, Song Yang, Yuan Zhou, Hongyuan Liu, Dugui Tang, Wei Huang, Tao Huang, Qing Liu, Weiqing Yu, Wei Su
In the construction and development of modern society, power grid engineering as an important content of urban construction and development and protection of residents' quality of life, in the face of the expanding scale of power grid investment, power grid project construction shows a rapid growth trend. With the continuous development of social economy and smart grid construction needs, the requirements of power grid construction quality and construction period are getting higher and higher. On the basis of understanding the research status of mechanized construction of power engineering, this paper mainly discusses the principle and structure of modular design by taking the actual soil and water conservation measures on site as an example, and then takes the mechanized construction of power engineering in a certain area as an example to determine the construction environmental protection technology, in order to improve the comprehensive level of China's power grid construction.
在现代社会的建设和发展中,电网工程作为城市建设发展和保障居民生活质量的重要内容,面对不断扩大的电网投资规模,电网工程建设呈现出快速增长的趋势。随着社会经济的不断发展和智能电网建设的需要,对电网工程建设质量和工期的要求也越来越高。本文在了解电力工程机械化施工研究现状的基础上,主要以现场实际水土保持措施为例,探讨模块化设计的原理和结构,进而以某地区电力工程机械化施工为例,确定施工环保技术,以提高我国电网建设的综合水平。
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引用次数: 0
Sediment distributions and transport patterns in the Pearl River Estuary and its adjacent coastal ocean 珠江口及其毗邻近海的沉积物分布和迁移模式
Pub Date : 2023-10-19 DOI: 10.56028/aetr.8.1.398.2023
Jian Shen, Dianci Chi, Bingrou Xi
Coastal sediment is important for the development of river deltas and for carrying both nutrients and pollutants into estuaries and coasts. Totally 265 surficial sediments collected from the Pearl River Estuary and its adjacent coastal ocean were analyzed by using Gao-Collins method to study the sediment transport path and deposition center. The Pearl River Estuary was an area of sandy mud sediment and showed some muddy patches. There were 5 distinguishable sediment convergence centers, which represent 3 types of sediment transport patterns and hydrodynamic environments. The net sediment transport pathways in the estuary and shelf sea were mainly in the offshore and landward direction, respectively. The analyzed results indicated that the main part of muddy sediment was confined to the mouth of the estuary due to the combined effects of the expansion and salinity intrusion.
沿岸沉积物对河流三角洲的发展以及将营养物质和污染物带入河口和海岸非常重要。本研究采用高-柯林斯法分析了从珠江口及其邻近近岸海域采集的 265 块表层沉积物,研究了沉积物的运移路径和沉积中心。结果表明:珠江口是一个砂质泥质沉积区,并呈现出一些泥质斑块。有 5 个不同的沉积物汇聚中心,代表了 3 种类型的沉积物运移模式和水动力环境。河口和陆架海的净沉积物运移路径分别以离岸和向陆方向为主。分析结果表明,在扩张和盐度入侵的共同作用下,泥质沉积物的主要部分被限制在河口。
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引用次数: 0
Python-based employment big data analysis in higher vocational colleges 基于Python的高职院校就业大数据分析
Pub Date : 2023-10-19 DOI: 10.56028/aetr.8.1.390.2023
Ping Du
In recent years, with the increase of graduates and the economic slowdown caused by the impact of the novel coronavirus pneumonia epidemic, the problem of difficult employment has attracted wide attention from all walks of life. Taking the employment data of graduates of a vocational college as an example, this paper displays the employment rate of graduates, employment industry, matching degree between employment unit and profession, salary level, geographical distribution and other information through data collection, data cleaning, data analysis and data visualization, so as to provide reference for students' career planning and employment choice. Finally, countermeasures and suggestions are put forward to help students better plan their career development, and job market data support for universities and government departments are also provided.
近年来,随着毕业生的增多和新型冠状病毒肺炎疫情影响导致的经济增速放缓,就业难问题引起了社会各界的广泛关注。本文以某职业院校毕业生就业数据为例,通过数据采集、数据清洗、数据分析、数据可视化等过程,展示了该校毕业生就业率、就业行业、就业单位与专业匹配度、薪资水平、地域分布等信息,为学生职业规划和就业选择提供参考。最后,提出帮助学生更好地规划职业发展的对策建议,为高校和政府部门提供就业市场数据支持。
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引用次数: 0
Mining and Analysis of In-use Vehicle Corrosion Data Based on Typical Environmental Conditions in China 基于中国典型环境条件的在用车腐蚀数据挖掘与分析
Pub Date : 2023-10-17 DOI: 10.56028/aetr.8.1.306.2023
Xiuxu Wang, Peng Liu, Jiayu Wang, Xin Wang, Kaixu Ren, Jiawei Zhao
As an important performance indicator for measuring product quality and safety, vehicle corrosion resistance has always been of great concern to industry enterprises and consumers. In this paper, we collect, processed and analysed exterior corrosion data from a total of 54 in-use vehicles (the vehicle that has been licensed and put into service) of nine models with high ownership in the coastal region of North China. Through the evaluation model of automobile corrosion resistance performance, data mining analysis was conducted on five key areas and the whole vehicle with different brands and ages (3-year and 6-year vehicles), key areas including exterior body, passenger compartment, luggage compartment, engine compartment, and chassis. It was found that the chassis and engine compartment of each vehicle model were severely corroded, with the corrosion surface of some chassis parts reaching 100%. The luggage compartment and exterior body were slightly corroded, and the luggage compartment parts of 8 models have not corroded after 3 years of use.
作为衡量产品质量安全的一项重要性能指标,车辆的耐腐蚀性能一直备受业内企业和消费者的关注。本文收集、处理和分析了华北沿海地区保有量较高的 9 种车型共 54 辆在用车(已上牌并投入使用的车辆)的外观腐蚀数据。通过汽车耐腐蚀性能评价模型,对不同品牌、不同车龄(3 年期和 6 年期车辆)的五个关键部位和整车进行了数据挖掘分析,关键部位包括车身外部、乘客舱、行李舱、发动机舱和底盘。结果发现,各车型的底盘和发动机舱腐蚀严重,部分底盘部件的腐蚀面达到 100%。行李箱和车身外部的腐蚀程度较轻,有 8 款车型的行李箱部件在使用 3 年后仍未出现腐蚀。
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引用次数: 0
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Advances in Engineering Technology Research
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