摘要：The stratum lithology and geological structure of the highway tunnel in the mountainous areas of western China are complex,and the engineering geological conditions are *** the highway tunnel passes through different lithological strata,its structural design and construction technology are completely diff ***,in order to support the tunnel design and construction,the tunnel survey Among them,the identifi cation of the contact boundary between magmatic rock and metamorphic rock and the grade of surrounding rock is very *** magnetotelluric survey of the Mupi tunnel of Jiuzhaigou-Mianyang highway on G8513 line,2D forward numerical simulation,1D,2D,3D inversion,and engineering geological analysis,it is revealed that the electrical characteristics of each layer,focusing on the identifi cation of the contact boundary between magmatic rock and metamorphic *** study provides the electrical characteristics of the magmatic rock and metamorphic rock contact boundary of the Mupi *** is speculated that the boundary is revealed by the tunnel construction excavation,which verifies the correctness of the geophysical inversion model and provides a more detailed design basis for the tunnel design.I believe that taking the Mupi Tunnel survey as an example,through this research,it can provide detailed geophysical evidence for highway tunnels to distinguish between magmatic rock and metamorphic rock.

摘要：Loess soils are widely distributed worldwide and typical in northwest China,and excessive agricultural irrigation has caused landslides in the area,specifically in the Heifangtai loess region in Lanzhou,Gansu,*** exploration is an essential method in landslide engineering geological surveys,and geological surveying,drilling,geophysical prospecting,monitoring,and other methods are used for performing engineering geological evaluation and obtaining comprehensive basic data for landslide protection design and *** theoretical feasibility of using geophysical methods in loess landslide detection is *** the basis of the shallow geological structure of the Heifangtai landslide region in Lanzhou,Gansu,China,a typical geoelectric model of the magnetotelluric method was established,and the loess landslide area was modeled through a two-dimensional finite element method,forward numerical simulation,and engineering geological *** distribution characteristics of the magnetotelluric field were *** is a typical application of the geological process analysis method in geophysical *** study provides the typical stratigraphic structure and electrical characteristics of different groundwater distributions in Heifangtai,Gansu,China,verifies the accuracy of forward modeling and calculation results,and provides a detailed theoretical basis for landslide detection through magnetotelluric *** the numerical simulation of the forward modeling of the Heifangtai landslide region in Lanzhou,Gansu,China,this study can provide a detailed geophysical basis for landslide investigation,corroborate results of geological investigation and landslide design,and facilitate the sustainable development of agriculture in Heifangtai.

摘要：A wide range of terrain features and landforms,which are exemplified by intricate geological formations and diverse rock compositions,are found in the western mountainous regions of *** areas frequently encounter geological *** one of the natural disasters,landslides lead to considerable loss of human life and *** mitigation of the losses caused by landslide disasters,a necessary measure for disaster prevention and mitigation involves conducting detailed investigations and monitoring of landslides,which is also the cornerstone of landslide *** study compares and analyzes the feasibility of the magnetotelluric detection method for landslides using the results of engineering geological surveys and landslide *** study aims to address the scientific problem of the validity of using magnetotelluric methods to detect landslide development *** Tangjiawan landslide signal on the left side of the K94+000~K94+145 section of the Wenma Expressway is analyzed by employing engineering geological survey,magnetotelluric detection,landslide monitoring,landslide analysis,and other *** results provide the static electrical characteristics of lithology,structure,and groundwater,as well as the dynamic electrical characteristics of landslide *** study focuses on analyzing the relationship between the methods of magnetotelluric detection and engineering geological surveys and the results of landslide *** workflow and methods for data collection,processing,inversion,interpretation,and analysis using the magnetotelluric method to detect the dynamic development process of landslides are presented in the *** conclusions indicate a strong correlation between the dynamic changes in magnetotelluric wave impedance with the surface displacement of landslides and the dynamic changes in *** use of the magnetotelluric method for landslide detection and monitoring is a fe

摘要：随着人类社会的高速发展和工程建设的激增,地质环境扰动日益显著,极端气候因素影响日益增多,地质灾害日益频繁发生,对人类的威胁和造成的损失也随之日益加剧。滑坡是其中最主要的地质灾害,因此,研究滑坡发育、发展、发生整个地质过程中伴随的物理现象,深入研究其信号特征,从而间接获取滑坡发展变化过程是地质灾害探测或监测的基础性研究,是值得深入探索的科学问题。但是专门用于滑坡探测的电磁仪器关键设计及具体实现的研究,特别是电磁仪器配套数据采集软件的设计及具体实现尚较缺乏。本研究以嵌入式计算机科学、软件工程、数字信号处理技术、地球物理、工程地质等多学科交叉的理论体系为基础,设计并实现了可用于滑坡探测或监测的仪器配套数据采集软件,拥有滑坡电磁法探测的嵌入式计算机软件自主知识产权,有助于科学探查滑坡地质灾害的动态发育、发展、发生。

摘要：随着人工智能(AI)技术的不断发展,AI已成为产品设计领域的重要工具。首先,分析了产品设计面临的诸多局限性,如设计周期长、市场需求变化快以及资源的严重浪费等。接着,探讨了ChatGPT如何提升产品设计的质量和效率,具体表现在培养创造力、优化设计解决方案以及为用户提供个性化指导。通过具体案例,ChatGPT在设计任务中的高效性与迅速性缩短了整体设计时间,凸显了其在改善产品设计流程中的价值,包括促进团队间的协作、减少设计迭代以及降低整体设计成本等。最后,本文展望了人工智能在智能产品设计和个性化设计中的应用前景,指出其将可能引领行业未来的发展方向。

摘要：随着人类社会的高速发展和工程建设的激增,地质环境扰动日益显著,极端气候因素影响日益增多,地质灾害日益频繁发生,对人类的威胁和造成的损失也随之日益加剧。滑坡是其中最主要的地质灾害,因此,研究滑坡发育、发展、发生整个地质过程中伴随的物理现象,研究其信号特征,从而间接获取滑坡发展变化的过程是地质灾害探测或监测的基础性研究,是值得深入探索的科学问题。但是专门用于滑坡探测的电磁仪器关键设计及具体实现的研究尚较缺乏。本研究以电子电路学、嵌入式计算机科学、数字信号处理技术、地球物理以及工程地质等多学科交叉的理论体系为基础,自主研发能用于滑坡探测电磁探测仪功能样机。本设计结合当前电子学科发展水平,将嵌入式多核达芬奇结构工业级计算机系统应用在地球探测仪器领域中,设计并实现了拥有自主知识产权的应用于滑坡探测的关键设备。若进一步完善并市场化,或可解决我国滑坡工程地质灾害监测领域业高端电磁仪器严重依赖进口的难题,可为滑坡不良地质勘察及防护提供强有力的技术支撑。

摘要：为解决光电催化分解水反应器中气泡长时间附着于光电极表面,从而导致有效活化面积减少和产气效率下降的问题,构建耦合振动系统的光电分解水制氢气泡动力学可视化实验平台,提出通过给电极施加不同振幅和频率振动以加速气泡脱离光电极表面的方法。首先,记录静止电极表面单个气泡演化过程中的电信号和几何参数;然后,对比不同频率及振幅下气泡生长过程中电流和电势的变化情况;最后,分析振动对气泡几何特性的影响。研究结果表明:振动频率和振幅的增加能够提高反应过程中的光电流,降低电势,使得反应阻力下降;增加振动频率和振幅均能显著减小气泡脱离尺寸,从而加速气泡的脱离;当振动频率为70 Hz时,施加振动后气泡的脱离直径比无振动时最大减小了321μm,减小幅度约为48%;施加振动后,气泡直径为生长时间的幂函数,且气泡生长依次受惯性和化学反应控制。该研究可为光电催化分解水反应器的优化设计提供新思路。

摘要：由于对建筑品质的要求越来越高,在设计过程中除了关注承载力、挠度等指标外,振动舒适度问题逐渐成为设计关注的主要内容,而基频是评价振动舒适度的指标之一。因此,本文以轻钢泡沫混凝土(LSFC)组合楼板为研究对象,通过锤击法试验、有限元分析、理论计算进行基频研究。研究结果表明:在LSFC组合楼板的实际工程中可以控制其基频在15Hz,以满足对振动舒适度的要求;在泡沫混凝土密度一定的条件下,LSFC组合单板的基频随着跨度的增加而降低;在跨度一定的条件下,LSFC组合单板的基频随着泡沫混凝土密度的增加而降低;在跨度分别为2m、2.5m、3m、3.5m,泡沫混凝土密度相对应为1650kg/m^(3)、1150kg/m^(3)、850kg/m^(3)、650kg/m^(3)时,试件的基频在15Hz左右,满足振动舒适度的要求。研究结果可为该类楼板的基频计算及振动舒适度设计提供参考和依据。

摘要：为研究往复疲劳荷载下再生钢纤维增强混凝土裂纹发展及损伤演化规律,开展了不同纤维体积掺量(V_(f)=10%、15%、20%)和长径比(l/φ=30、60、90)钢纤维增强混凝土往复轴压试验,通过声发射技术追踪钢纤维增强混凝土的损伤累积过程及破坏类型。试验结果表明,在单调或往复疲劳荷载下混凝土累积AE信号曲线均呈现“缓-陡-缓”三阶段特征,AE信号数与纤维体积掺量成正比,与纤维长径比成反比;素混凝土试件的RA值(800 ms/V)低于钢纤维增强混凝土试件(1400 ms/V),钢纤维增强混凝土的破坏模式以拉伸裂缝为主,而素混凝土以剪切裂缝为主。

摘要：针对某船舶动力系统蒸汽调节管路在不同阀门启闭状态下的流动噪声源空间分布,开展了详细的计算气动声学数值研究工作。采用剪切应力输运湍流模型(SST,shear stress transport)获取了管内复杂三维蒸汽流场分布;结合Curle声类比模型和Proudman声类比模型分别计算得到管路壁面偶极子噪声源和管内流体域四极子噪声源分布特性。研究结果表明:相比于阀门关闭状态下的一进一出“T型”和“Z型”管路,阀门开启后的两进一出“h型”管路内流动噪声源强度上升明显;偶极子噪声源主要分布在管路汇聚处与出口弯管区域壁面,与此区域流体剪切应力相关;由于出口弯管直径突然变小,且流体流向发生变化,导致此处管内流场湍流度较高,故而产生了较为强烈的四极子噪声源。