Predicting impact forces on pipelines from deep-sea fluidized slides:A comprehensive review of key factors

Deep-sea pipelines play a pivotal role in seabed mineral resource development,global energy and resource supply provision,network communication,and environmental protection.However,the placement of these pipelines on the seabed surface exposes them to potential risks arising from the complex deep-sea hydrodynamic and geological environment,particularly submarine slides.Historical incidents have highlighted the substantial damage to pipelines due to slides.Specifically,deep-sea fluidized slides(in a debris/mud flow or turbidity current physical state),characterized by high speed,pose a significant threat.Accurately assessing the impact forces exerted on pipelines by fluidized submarine slides is crucial for ensuring pipeline safety.This study aimed to provide a comprehensive overview of recent advancements in understanding pipeline impact forces caused by fluidized deep-sea slides,thereby identifying key factors and corresponding mechanisms that influence pipeline impact forces.These factors include the velocity,density,and shear behavior of deep-sea fluidized slides,as well as the geometry,stiffness,self-weight,and mechanical model of pipelines.Additionally,the interface contact conditions and spatial relations were examined within the context of deep-sea slides and their interactions with pipelines.Building upon a thorough review of these achievements,future directions were proposed for assessing and characterizing the key factors affecting slide impact loading on pipelines.A comprehensive understanding of these results is essential for the sustainable development of deep-sea pipeline projects associated with seabed resource development and the implementation of disaster prevention measures.

基于Slide的研山铁矿高陡边坡稳定性分析

露天矿山边坡稳定性对采场安全生产至关重要。为探究边坡施工过程中的安全隐患,以研山铁矿高陡边坡为研究对象,考虑爆破震动及地震作用荷载,运用Slide二维边坡数值模拟软件对典型剖面进行稳定性计算。结果表明:在正常工况条件、爆破震动及地震作用下,边坡整体安全系数符合要求,整体处于稳定状态。但在爆破震动及地震作用下,边坡局部安全系数介于临界值,可能存在局部滑坡风险。为保证采场生产安全,提出了相应的边坡管理预防措施,为相关实践工作提供一定参考。

CrossLinkNet: An Explainable and Trustworthy AI Framework for Whole-Slide Images Segmentation

In the intelligent medical diagnosis area,Artificial Intelligence(AI)’s trustworthiness,reliability,and interpretability are critical,especially in cancer diagnosis.Traditional neural networks,while excellent at processing natural images,often lack interpretability and adaptability when processing high-resolution digital pathological images.This limitation is particularly evident in pathological diagnosis,which is the gold standard of cancer diagnosis and relies on a pathologist’s careful examination and analysis of digital pathological slides to identify the features and progression of the disease.Therefore,the integration of interpretable AI into smart medical diagnosis is not only an inevitable technological trend but also a key to improving diagnostic accuracy and reliability.In this paper,we introduce an innovative Multi-Scale Multi-Branch Feature Encoder(MSBE)and present the design of the CrossLinkNet Framework.The MSBE enhances the network’s capability for feature extraction by allowing the adjustment of hyperparameters to configure the number of branches and modules.The CrossLinkNet Framework,serving as a versatile image segmentation network architecture,employs cross-layer encoder-decoder connections for multi-level feature fusion,thereby enhancing feature integration and segmentation accuracy.Comprehensive quantitative and qualitative experiments on two datasets demonstrate that CrossLinkNet,equipped with the MSBE encoder,not only achieves accurate segmentation results but is also adaptable to various tumor segmentation tasks and scenarios by replacing different feature encoders.Crucially,CrossLinkNet emphasizes the interpretability of the AI model,a crucial aspect for medical professionals,providing an in-depth understanding of the model’s decisions and thereby enhancing trust and reliability in AI-assisted diagnostics.

基于SLIDE软件的某矿山排土场稳定性分析

为研究某矿山排土场稳定性,使用SLIDE软件,采用简化Bishop法、Janbu修正法和Spencer法对该排土场自然工况、降雨工况和地震工况下的安全系数进行计算。结果表明,该排土场边坡在自然和降雨工况下处于稳定,在地震工况下处于基本稳定,由此为该排土场将来的维护和治理作业提供了参考价值。

基于Slide2的某铁矿尾矿库坝体稳定性分析

尾矿库是冶金矿山的重要附属设施,一旦失事将造成严重的环境污染和重大损失,尾矿库安全的核心在于尾矿坝是否稳定。通过采用Slide2软件,根据岩土工程勘察资料,建立山西某铁矿尾矿库坝体典型剖面的二维数值模型,对坝体三种运行工况下的渗流稳定性和坝坡稳定性进行分析,以确定尾矿库的安全性,并分析Slide2软件应用于尾矿坝稳定性分析中的可靠性和功能性。

Slide stability of hydraulic structures on subbed soil

The study on slide stability of hydraulic structures on subbed soil was made. Using the slide test results of dragged concreting base plates on subbed soil pits, the decreased value of bearing capacity on slide after re- bound and repression influence of subbed soil was determined, and the envelope of ultimate slide shear resistance was also quantitatively determined. Due to the lack of similar mechanisms of slide stability on subbed soil and base plate of hydraulic structures, different safety coefficients for the slide stability were adopted. It was suggested to use the maximum compressive stress O＇m~ of eccentric load to predict structure displacement, slide and creepy slippage of subbed soil, to determine the sliding creepy contour and limit the maximum load on subbed soil. Two hydraulic structures that had been put into operation were reviewed by this method, and the results accorded with the real conditions.

基于Slide的Webdav服务器的设计与实现

描述了一个支持Webdav协议的文档管理系统，它以Apache的Jakarta项目组中的Slide模块为实现基础，任何支持Webdav协议的客户端都可以方便地使用该系统。

SLIDE在深基坑支护可靠性分析中的应用

基于可靠性分析理论,利用SLIDE软件,对某深基坑复合土钉支护进行了数值模拟,计算了安全系数和可靠性指标。结果表明:SLIDE是基坑可靠性分析的一种有效工具,可在考虑土层参数不确定性的条件下,得出基坑支护的可靠性指标。

基于Slide的某钨矿尾矿坝稳定性及概率分析

尾矿坝的稳定运行是钨矿山安全生产的重要保障。研究结合某钨矿尾矿库的工程地质特征,采用Slide软件建立坝体的概化模型,通过Bishop法计算尾矿坝在正常、洪水及特殊三种工况下的稳定性,结合瑞典条分法对坝体的抗滑稳定最小安全系数进行校核。同时运用概率分析法,对安全系数在服从正态分布及对数正态分布下开展可靠性指数的计算,并得出坝体的失效概率。综合分析坝体的稳定性和概率分析的结果,认为该尾矿坝在三种工况下能正常运行但存在洪水漫顶和地震液化的隐患,并针对隐患提出相应的整改建议。

支气管镜在儿童Slide气管成形术中的应用

目的 总结支气管镜在儿童Slide气管成形术中的作用。方法 回顾性分析2017—2020年湖南省人民医院收治的4例气管狭窄患儿的诊疗经过,总结支气管镜在Slide气管成形术术前评估、术中定位与测量及术后创面评估和治疗中的作用。结果 Slide气管成形术术前支气管镜评估显示,4例患儿中3例存在完全气管环,2例合并肺动脉吊带,2例存在多处狭窄。3例在该院完成Slide气管成形术,术中支气管镜下判断狭窄段中点及测量狭窄段长度,协助离断气管狭窄段,术后灌洗明确病原;1例外院Slide气管成形术术后9个月出现瘢痕牵拉,经支气管镜下介入治疗好转。2例术后第4天支气管镜下发现气管黏膜改变,调整治疗方案;2例术后1个月出现肉芽增生,经支气管镜下冷冻治疗好转。1例因吻合口坏死放弃治疗死亡,存活的3例随访6个月以上,预后可,但均存在气管支气管软化。结论 支气管镜可用于气管狭窄患儿Slide气管成形术的管理,有助于术后康复及随访。

Distribution and features of landslides in the Tianshui Basin, Northwest China

Landslides in Tianshui Basin, Gansu Province, Northwest China, severely affect the local population and the economy;therefore,understanding their evolution and kinematics is of great interest for landslide risk assessment and prevention. However, there is no unified classification standard for the types of loess landslides in Tianshui.In this study, we explored the landslide distribution and failure characteristics by means of field investigation,remotesensinginterpretation,geological mapping, drilling exploration and shearwave velocity tests, and established a database of Tianshui landslides. Our analysis shows that shear zones in mudstone usually develop in weak intercalated layers. Landslides occur mainly along the West Qinling faults on slopes with gradients of 10° to 25° and on southeast-and southwest-facing slopes.These landslides were classified into five types: loess landslides, loess–mudstone interface landslides, loess flow-slides, loess–mudstone plane landslides and loess–mudstone cutting landslides. We discussed the evolution and failure process of each landslide type and analyzed the formation mechanism and motion characteristics of large-scale landslides. The analysis results show that the landslides in the study area are characterized by a gentle slope, long runout and high risk. The relationship between the runout L and the vertical drop H of the large-scale landslides in the study area is L > 4 H. There are good correlations between the equivalent friction coefficient of largescale landslides and their maximum height, runout,area and volume. The sliding zone of large-scale landslides often develops in the bedrock contact zone or in a weak interlayer within mudstone. From microstructure analysis, undisturbed mudstone consists mainly of small aggregates with dispersed inter-aggregate pores, whereas sheared clay has a more homogeneous structure. Linear striations are well developed on shear surfaces, and the clay pores in those surfaces have a more uniform distribution than those in undisturbed clay.

基于Slide程序对云南某矿排土场边坡稳定性与不确定性分析

露天矿排土场边坡的稳定性对露天矿山安全有序的生产与运行起着至关重要的作用。该文采用极限平衡法对排土场边坡进行了稳定性分析,通过排土场边坡的各种不确定影响因素及其相互关系,对排土场边坡进行了不确定性分析。基于Slide程序对云南某露天矿排土场进行了简要分析与模拟,其模拟结果与该排土场现状基本吻合,同时分析了该排土场的不确定性,为今后如何进行堆排提出了建议。

数字音频广播Slide Show业务的研究与实现

该文重点介绍了数字音频广播数据业务中Slide Show业务的数据结构,然后详细分析说明了Slide Show业务数据的传输过程及其解码的具体方法和流程,并给出了基于计算机的DMBPlayer平台上实现与验证方案。

Slide在边坡稳定分析中的应用——以某水电站放空洞出水口边坡为例

在各种边坡稳定分析方法中,极限平衡分析法是应用最广泛的方法之一。Slide软件主要采用毕肖普、简布、Spencer等方法对边坡的稳定系数及失效概率进行二维分析,可用于解决圆弧、非圆弧及复合滑移面等多种滑移面的土质及岩质边坡稳定问题。利用该软件对某水电站放空洞出水口边坡的稳定性进行分析,为边坡下步开挖与支护提供地质依据。

Slide软件在边坡稳定性计算中的应用

介绍了一款新的边坡稳定性计算的专业软件Slide,并结合某桥梁的工程实例,运用Slide软件进行建模和计算分析。

Stability analysis of concrete gravity dam on complicated foundation with multiple slide planes

A key problem in gravity dam design is providing enough stability to prevent slide, and the difficulty increases if there are several weak structural planes in the dam foundation. Overload and material weakening were taken into account, and a .finite difference strength reserve method with partial safety factors based on the reliability method was developed and used to study the anti-slide stability of a concrete gravity dam on a complicated foundation with multiple slide planes. Possible slide paths were obtained, and the stability of the foundation with possible failure planes was evaluated through analysis of the stress distribution characteristics. The results reveal the mechanism and process of sliding due to weak structural planes and their deformations, and provide a reference for anti-slide stability analysis of gravity dams in complicated geological conditions.

IHA和Slide诊断旋毛虫病的研究

目的 :检测感染旋毛虫病豚鼠血清 ,寻求新的诊断旋毛虫病的方法。方法 :采用间接红细胞凝集试验(IHA)和玻片法环蚴沉淀试验 (Slide)。结果 :阳性率分别为 10 0 %和 97.1%。用此两种血清学方法检测正常豚鼠、血吸虫病兔、肺吸虫病大白鼠、蛔虫病人和鞭虫病人血清 ,除 1例肺吸虫病大白鼠血清IHA出现阳性反应外 ,其它血清两种方法均为阴性反应。结论

IHA和Slide诊断旋毛虫病的研究

旋毛虫病是一种动物源性寄生虫病，除寄生人外，还在猪、犬、羊、牛、鼠等120多种哺乳动物之间广泛传播。我国自1964年西藏自治区首次报道人体病例后，东北、云南、西藏、河南、湖北等地又相继发现并报道了多起病例。确诊本病虽依据活检，但因诸多不便而漏诊、误诊较多。本文采用间接红细胞凝集试验（IHA）和玻片法环蚴沉淀试验（Slide）论断旋毛虫病，旨在研究这两种免疫血清学方法的敏感性和特异性，以期替代传统的肌肉活检法。

Effects of Heat Softening on Initiation of Landslides

Effects of heat softening on the initiation of slide surface(shear banding) in clayey slopes during fast deformation were discussed.Controlling equations considering heat,pore pressure and mechanical movement were presented.By perturbation method,the instability condition of localized zone(i.e.criterion for initiation of shear banding) for thermal related soils,such as clayey slope,was obtained.It is shown that slide surface initiates once the thermal-softening effects overcome the strain-hardening effects whether it is adiabatic or not.Without strain hardening effects,strain rate hardening obviously plays a role in initiation of shear band.During initiating process,heat is trapped inside the shear band,which leads rapidly to a pore pressure increase and fast loss of strength.The localized shear strain is concentrated in a narrow zone with a width of several centimeters at most and increases fast.This zone forms the sliding surface.Temperature can increase more than 2?C,pore pressure can increase 160% in about 0.1s inside this zone.These changes cause the fast decrease in friction-coefficient by about 36% over the initial value.That is how shear band initiated and developed in clayey slopes.

基于数控系统的Slide Show模块的开发与设计

针对数控系统提出了一种以显示图片的方式介绍系统功能的Slide Show模块设计方案。作者分析了图片设计的要求与标准,讨论了Slide Show模块的实现方法,并且提供了程序执行的流程图。文章分析了Slide Show模块的性能,对目前还存在的问题提出改进的设想。实践证明：使用Slide Show模块提高了用户对数控系统的使用效率。