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：介绍了用于保障机场场面安全的A-SMGCS车载终端的设计与实现,描述了终端的基本工作原理和组成,探讨了终端的软硬件总体设计,介绍了基于QNX嵌入式平台的电子地图设计,包括地图引擎、地图数据结构、道路匹配、多线程设计,论述了终端的实现及展望。

摘要：在我国特种车辆执行紧急任务时享有道路优先通行权,紧急情况下可闯红灯,具有较大的安全隐患,所以进行特种车辆信号优先控制研究是非常必要的。在分析特种车辆行车特性的基础上,设计了一套由特种车辆检测系统、通信系统、交通信号控制系统、交通管理与控制中心所组成的特种车辆信号优先控制系统,并对各组成功能进行了介绍,阐述了特种车辆交叉口信号优先控制策略及逻辑,同时对不同交叉口下特种车辆信号优先进行研究。该信号优先系统在保证行车安全的前提下,可以极大提高特种车辆运行效率。

摘要：研究滑坡变形特征对于分析滑坡形成机理和制定防治措施至关重要。文章以工程诱发的唐家湾滑坡为研究对象,通过工程施工前后的6期无人机影像得到高分辨率DOM,基于相邻两期DOM中识别的特征点作为监测点,根据其位置的变化得出地表位移矢量数据,进而结合地质勘探和深部位移监测分析滑坡变形特征和形成机理。研究表明:工程建设前滑坡区无明显变形(第1个观测周期),工程施工后的第2观测周期(2021-03-15—2021-06-06)、第3观测周期(2021-06-06—2021-09-08)和第4观测周期(2021-09-08—2021-11-03)滑坡主滑区平均变形速率分别为53.0,103.2和62.5 mm/d,至第5观测周期(2021-11-03—2022-01-03)变形速率趋于0;第2观测周期滑坡后缘的弃渣堆载是滑坡的直接触发因素,降雨促进了滑坡变形的发展,而随着雨季的结束和前缘的堆载反压滑坡变形速率逐渐降低;利用多期无人机高清影像可获取大范围、长时序地表变形信息,可作为一种有效的滑坡变形监测手段。

摘要：针对燃料电池用空气悬浮压缩机,本文设计了一种背靠背形式的两级离心空压机,并进行了试验研究。首先根据设计要求,对离心空压机进行一维和三维设计,之后对压缩机内部流场进行了数值模拟计算和分析,得到了离心空压机性能曲线。最后搭建了离心压缩机试验平台,通过试验测量相关参数和性能。试验结果表明,本文设计的离心空压机满足设计要求,同时数值模拟结果与试验结果吻合程度较好。

摘要：Loesses are widely distributed all over the world,especially in ***,long-term agricultural irrigation and extreme climate changes have led to frequent geological disasters in the Heifangtai area of Lanzhou,Gansu,*** these,landslides are one of the most frequent types of disasters that are harmful to humans and the environment.A landslide is closely related to the lithology,structure,and groundwater of the site and consists of a combination of structure units divided by discontinuities,such as faults,joints,and fi ***,geological surveys,engineering drilling,and trenching are typically used to identify the stratum lithology,structure,and groundwater in order to visually display underground information within a limited depth ***,these methods have *** particular,geological surveys can only describe geological phenomena on the surface,while the cost of drilling and trenching may be high,along with the ineffi ciency of *** this research,the integrated geophysical exploration method was used to analyze the hidden joints,cracks,and other discontinuities and geophysical features of the *** results were verified by trench exploration,and large amounts of underground information were obtained,especially the spread and distribution of discontinuities in landslide *** information can be effectively used for carrying out and providing meaningful experiences and lessons in future comprehensive geophysical processing and interpretations related to the prediction and evaluation of landslides.

摘要：《涉过愤怒的海》是一部追求现实主义质感,兼具类型创作和个人表达的影片,主创团队结合文本内容对视觉呈现与影像表达进行了创造性的艺术探索。摄影指导李然从摄影创作、灯光设计以及空间叙事等角度营造了富有力量感、代入感和冲击感的极致影像,并通过独具匠心的镜头设计完成了情绪化和奇观化叙事。影片凭借独树一帜的影像质感传达出丰富的情感和深刻的主题,并以此探寻类型创作与个人表达之间的影像美学,为摄影创作积累了宝贵的实践经验。