河道整治生态护坡之浅谈

河道整治是提高水资源承载能力,优化河道防洪功能的有效途径,是恢复提高河道基本功能的根本措施。河道护坡作为河道整治综合工程中的重要部分,对水灾防治有着重要意义,生态护坡作为近年来一种新的护坡形式,在我国中、小河流河道治理工程中发挥着成效显著的防洪作用。     

河道综合整治工程概算编制要点研究——以深圳市某河道综合整治工程为例

结合深圳某片区河道综合整治工程初步设计概算的编制工作,阐述概算编制依据、取费依据及费率标准,从防洪排涝工程和园林工程两方面分析河道综合整治工程费用编制要点,探讨相应问题的对策。     

关于同安区官浔溪中上游河道治理工程设计的探讨

本文分析同安区官浔溪中上游河道防洪排涝状况及成因,讨论防洪排涝设计标准的拟定,进行水文水利分析计算,提出整治思路,并对综合治理工程措施进行设计探讨.     

石家庄“十二五”312亿投资水利建设

近日公布的《石家庄市水利改革发展"十二五"规划》提出,到"十二五"规划期末,石家庄计划安排水利建设投资312亿元。根据《规划》,"十二五"期间安排与中心城防洪密切相关的南北防洪堤工程、滹沱河防洪整治工程、机     

城市河道综合整治规划设计探索

针对城市河道综合整治问题,结合工程实例,阐述了城市滨水区规划的原则、景区性质及发展目标,探讨了城市空间布局、景点设计、植物配植规划、防洪规划、交通规划等规划构思,论述了河道整治和滨水地带规划建设可持续发展的途径.     

棕水变绿水——广州市东濠涌水环境及景观改造综合整治工程研究

古时广州是一座“河道如巷、水系成网”的水城,丰富的水资源使广州形成独具特色的城市水文化。在众多的河涌当中,东濠涌是广州仅存的古城护城河,至今已有六百多年历史。近代由于城市的发展,东濠涌由原来防洪排涝和水运为主的功能变成了以纳污为主,导致水环境污染日益严重。近几年,广州政府投入巨资治理东濠涌。该研究从水环境整治工程、生态河岸及景观整治工程两方面归纳东濠涌综合整治工程的思路与特．羔,表达了东濠涌综合整治工程对于改善城市生态环境所产生的积极影响,     

复合土工膜在滹沱河防洪综合整治市区段工程中的应用

本文从介绍复合土工膜的基本特点入手,重点分析和阐述了其施工工艺原理及流程,结合滹沱河防洪绿合整治工程实践,提出了施工质量控制的措施与方法。     

长江德感防洪工程对通航条件的影响

长江德感河段防洪工程是以防洪为主的综合性河岸整治工程,根据河工模型试验研究成果,从通航安全角度,分析工程修建后对船舶通航、港区停泊条件的影响,提出航运条件改善措施。     

温岭 五水共治绿驳岸 人水共生享清幽

正浙江省委十三届四次全会提出,要以"五水共治"为突破口倒逼转型升级。温岭市率先实施河道整治,将前溪、东月河综合整治作为"五水共治"的示范性项目,在查阅相关规划资料的基础上,对其设计理念、工程措施进行分析,提出问题和建议,规划并实施整治工程,为进一步提升美化城市河道周边环境、有效保障河道防洪排涝、保护水资源和水环境打下了基础。     

柳州竹鹅溪河道综合整治工程设计

在广西柳州市竹鹅溪河道综合治理工程中按照生态治理的理念进行设计。详述了各工程项目的设计要点,包括河道整治工程、橡胶坝工程、污水截流工程、景观工程、护岸工程等。工程实施后,既满足了城市河道防洪排涝、治污的功能要求,又为市民提供了休闲、娱乐场所,实现了社会和环境效益的统一。     

城市渠溪生态景观的结构设计方法

自然景观丰富的渠溪是今后城市渠溪整治的目标和发展方向,渠溪结构安全是保证渠溪满足各种功能的前提,从渠底治理、边坡治理和节点治理三个方面探讨了渠溪满足生态景观的结构设计思路和方法,对渠溪的综合整治具有一定的参考价值。     

高含水率有机质河道底泥压缩性状试验研究

河道底泥的压缩性状是影响河道底泥环保疏浚设计及处置的一个关键因素,采集了4条河道的底泥,针对4种城市河道底泥和过氧化氢处理的底泥开展了一系列物理和压缩试验,研究河道底泥的压缩性状,探讨有机质含量对河道底泥压缩性状的影响规律。试验结果表明,河道底泥的有机质含量变化范围大,河道底泥的压缩性状与底泥的物理性状密切相关,与无机质土类似,初始孔隙比和液限孔隙比是河道底泥压缩性状的两个关键控制因素。有机质对底泥压缩性状的影响可以归结于液限孔隙比的改变,有机质含量主要影响河道底泥的液限和比重,进而导致河道底泥重塑屈服应力σ_(yr)~′和压缩性状发生改变。有机质含量越高,液限孔隙比越大,压缩指数越大,呈现出的压缩性越高。     

陕西洋县朱鹮河流栖息地生境修复 研究

河流是朱鹮重要栖息地之一,在朱鹮逐渐转移至低海拔区域生存的趋势下,提高河流栖息地生境质量是当前朱鹮保护的重要内容之一。利用数据收集、现场调研、Arc GIS等分析方法对近年来河流栖息地生态变化过程进行分析,分别从栖息地适宜性、景观格局指数及生境质量3个方面探讨朱鹮河流栖息地质量的状况,从中找出朱鹮河流栖息地生境的具体问题。从不同河流生境尺度,探讨朱鹮河流栖息地的修复方法。     

粉喷桩处理河道滑坡的实例应用及探讨

在南方城市内河整治工程中,通常法满足大范围放坡,且内河边坡和河底土质均较差,河道开挖过程中容易产生滑坡,影响河道成型和周边建筑物安全。河道滑坡治理采用水泥粉喷桩复合地基能够有效地解决河道软基的低抗剪性,提高边坡稳定性。本文结合工程实例,介绍了利用水泥粉喷桩的抗剪强度,提高河道边坡抗滑稳定性的成功经验。     

Monthly river flow forecasting by an adaptive neuro-fuzzy inference system

In this study, the applicability of an adaptive neuro-fuzzy inference system (ANFIS) to forecast for monthly river flows is investigated. For this, the Göksu river in the Seyhan catchment located in southern Turkey was chosen as a case study. The river flow forecasting models having various input structures are trained and tested by the ANFIS method. The results of ANFIS models for both training and testing are evaluated and the best-fit forecasting model is determined. The best-fit model is also trained and tested by feed forward neural networks (FFNN) and traditional autoregressive (AR) methods, and the performances of the models are compared. Moreover, ANFIS and FFNN models are verified by a validation data set including river flow data records during the time period 1997–2000. The results demonstrate that ANFIS can be applied successfully and provides high accuracy and reliability for monthly river flow forecasting.     

Research on Ecological Space Planning Oriented Urban River Landscape Planning

Based on the generalized landscape perspective, regional connotation of urban river landscape is expanded. The area connotation of urban river landscape is expanded based on the generalized landscape perspective. In addition to natural and functional attributes, river landscape should be regarded as a regional space element based on heterogeneous space scale. First, as for research method system, the space research models(including ecological footprint, space planning, and landscape pattern index, etc.) coupled with different angle scales and interdisciplinary theory, are utilized to study different correlations and results formed by urban river landscape elements and other regional space elements from the perspective of the regional ecological space, and the overall development goal of the urban river landscape pattern based on the goals of the regional ecological space planning is obtained. Second, the oriented urban river landscape planning and the "M" type close-tonature design strategy are evaluated through the city function zoning orientation and micro-scale urban river landscape pattern index. The research realizes the compatibility of overall goals in terms of the regional ecology, the development of urban functional areas, and the river landscape planning, without losing micro difference and maneuverability based on the urban river landscape planning and design oriented strategy, which innovates the new approach of urban river landscape planning and design with sustainable and balanced development of regional resources, multi-scale, and multiple objectives.     

大蒋河排水区排洪方案设计探析

近年来城市洪涝愈发频繁,造成了大量的人员伤亡和财物损失,有必要在城市规划和设计时做好排洪排水设计。本文结合连云港大蒋河排水区的排水设计项目,针对当前的城市发展需求,对原有的防洪和排水规划进行分析和调整,通过在中河入南河口以上建一小型节制闸,可以防止南河洪水对中河排涝产生不利影响。     

Using river distances in the space/time estimation of dissolved oxygen along two impaired river networks in New Jersey

Understanding surface water quality is a critical step towards protecting human health and ecological stability. Because of resource deficiencies and the large number of river miles needing assessment, there is a need for a methodology that can accurately depict river water quality where data do not exist. The objective of this research is to implement a methodology that incorporates a river metric into the space/time analysis of dissolved oxygen data for two impaired river basins. An efficient algorithm is developed to calculate river distances within the BMElib statistical package for space/time geostatistics. We find that using a river distance in a space/time context leads to an appreciable 10% reduction in the overall estimation error, and results in maps of DO that are more realistic than those obtained using a Euclidean distance. As a result river distance is used in the subsequent non-attainment assessment of DO for two impaired river basins in New Jersey.     

海水拌和珊瑚礁砂混凝土力学性能及微观结构

针对海水拌和珊瑚礁砂混凝土与普通河砂混凝土力学性能的差异开展研究,并对其微观结构进行分析.结果表明:相比普通河砂,珊瑚礁砂结构疏松多孔、多棱角、脆性较大;用海水拌和的珊瑚礁砂混凝土早期抗压强度发展较快而后期抗压强度增长速率相对普通河砂混凝土缓慢,其弹性模量低于普通河砂混凝土,抗折强度和劈裂抗拉强度与普通河砂混凝土无显著差异;海水拌和珊瑚礁砂混凝土与普通河砂混凝土水化产物类型相同,水化产物与珊瑚礁砂表面孔隙结合紧密.