浅海桶形基础平台抗拔力与抗倾稳定分析

平台在海上受风、浪、流、冰等水平载荷作用产生倾斜 ,而土壤粘接力、摩擦力和土抗力是平台的抗拔和抗倾力 ,桶基平台应满足抗拔、抗倾稳定的要求 ,以保证平台的整体稳定性。讨论了桶基平台受水平力作用时 ,桶形基础的破坏模式及其计算方法 ,阐述了抗倾稳定计算方法     

互花米草及其对海岸的防护作用

本文论述了互花米草在滩涂中种植的时间、种植的方法及其生长的适应性。文中着重讨论互花米草在海岸工程中防浪和消浪能力。与工程护岸比较，互花米草护岸是最经济、合理和有效的。通过本文的讨论为今后利用互花米草进行海岸防护提供依据     

自适应馈线保护在胜利海上平台供电系统中的应用研究

介绍了自适应电流保护原理在胜利海上平台供电系统中的应用。应用该原理的电流保护克服了传统电流保护一成不变的定值、受系统运行方式和短路类型的影响较大等缺点，它充分发挥了微机的记忆、逻辑判断、数学运算等强大的功能，提供实时计算保护装设处到系统等效电源间的阻抗，通过不断监视负荷电流来自动整定过流保护，并引入了反时限特性，解决了实际存在的技术问题，使得保护装置灵敏可靠。     

Immediate profile and planform evolution of a beach nourishment project with hurricane influences

In this study, planform adjustment began during a period of calm weather immediately after nourishment and then the passage of one strong storm caused a substantial portion of the total profile equilibration. Weekly beach profiles, shoreline surveys, and nearshore wave measurements were conducted before, during, and immediately after construction of the 1100-m long Upham Beach nourishment project on the low-energy, west coast of Florida. This project was constructed in three segments: the wide north segment, the central segment, and the narrow south segment. With the exception of the relatively distant passage of Hurricane Charley, calm weather prevailed for 45 days following completion of the south and central segments. Construction of the wide north segment was completed on August 27, 2004. Substantial planform diffusion occurred prior to construction completion via formation of a 300-m long spit extending from the wide north segment. The shoreline orientation was changed abruptly due to this diffusion spit formation, as opposed to the gradual adjustment predicted by most long-term models. Planform adjustment was initiated prior to profile equilibration, and it did not require high-energy conditions. A simple vector sum model for determining the orientation of a potential diffusion spit was developed. This study recommends designing end transitions at the predicted diffusion spit orientation to avoid post-nourishment spit formation during future projects.     

桩式离岸堤保滩促淤工程消浪效果试验研究

在上海奉贤南北港保滩促淤工程中，采用了一种新型结构型式－桩式离岸堤，并通过物理模式试验进行了桩式离岸堤消浪效果研究。针对离岸堤通常建于近岸水区破波带的特点，重点研究水深，堤高以及堤身结构对波浪衰减的影响，同时对桩式离岸堤堤后水域的波浪底流速 分析探讨。研究结果表明，桩式离岸堤不仅具有良好的消浪效果。而且可在较大范围内改变波态，即由引起水体剧烈紊动的破波转变为浅水推进波，从而有效地改善海滩上的动力条件，促进海滩免受侵蚀，是一种具有广泛应用前景和新型保滩促淤结构。     

浙江主要气象灾害概述

气象灾害每年都有,只是轻重程度不同。就全国和全省范围来说,很少有真正风调雨顺的年份。本文根据1951～1988年38年的气象历史资料及有关政府部门的材料、简报、报道,统计出台风、洪涝、海上大风和强对流等几种主要气象灾害对浙江经济造成损失和伤亡人数。文中对主要气象灾害的特点、一般规律和灾情作了概述,并列出一些典型实例,提出了预防气象灾害的意见。     

Reduction of sand demand for shore protection

Beach nourishment is an environmentally preferred method of shore protection, but the annual sand requirement may lead to substantial maintenance costs. The shoreline processes, involving the surf zone, beach and dune, are reviewed with the aim of reducing the annual sand requirement of eroding shorelines. It is shown that surf zones with equilibrium profiles, on which the wave energy conversion is evenly distributed across the surf zone, from experience for given conditions indicate least loss of sand. On steep, eroding shorelines it may be difficult to establish an equilibrium profile. For such cases, the use of perched surf zones is recommended, which are supported at the seaward limit by an underwater sill. For reduction of littoral transport, the use of pervious pile groynes is recommended. These are arguably more efficient than impervious groynes. The sand loss from a usually dry beach by raised water levels is shown to be a function of the beach slope and is least when the storm waves at raised water levels do not cut an erosion escarpment. The loss of sand from a dune by infrequent severe storm tides can be prevented with the aid of a built-in membrane. These sand losses are usually large and constitute an uneconomic use of this sand resource. The proposed concepts and measures are linked to existing knowledge, augmented by data from the large wave flume (LWF) in Germany and field data from the North and Baltic Sea coasts.     

胜利二号极浅海步行坐底式钻井平台防腐措施研究

本文根据胜利二号极浅海步行坐底钻井平台的作业和工作环境特点，进行了防腐措施研究，设计了切合实际的防腐措施。该平台在海上作业近四年进坞修理，经观测防腐情况良好。     

中国红树林生态系统的植物种类、多样性、功能及其保护

本文从4个方面对中国红树林生态系统的植物进行论述：（1）中国红树林生态系统的红树植物、半红树植物、伴生植物、红树林区的大型藻类和浮游植物种类；（2）中国红树林生态系统植物的物种多样性、红树植物生理和形态适应的多样性、产物的多样性；（3）红树林的生态功能；（4）中国红树林生态系统的主要保护问题及其保护措施。     

浅析长白山自然保护区旅游发展中的生态环境保护问题

长白山自然保护区是我国建立较早的和典型的自然保护区之一,其主要功能是进行自然生态环境的保护。但是,为了克服保护资金短缺境况,长白山自然保护区将发展旅游业作为生态环境保护工作资金支持的一条途径,而旅游业曾长期被认为是对生态环境影响微乎其微的产业,但自长白山开始发展旅游业以来,经济效益的实现似乎掩盖了原本的生态环境保护目标。本文在分析了长白山旅游发展对生态环境造成的负面影响之后,提出了一系列在长白山旅游发展过程中生态环境的保护措施,以期兼顾长白山自然保护区发展和保护两大目标的实现。