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《水利水电科技进展》2021,(4)
正为方便作者投稿,特将本刊的性质和对稿件的要求简要介绍如下:1本刊是一份科学技术期刊,主要刊登与水科学、水工程、水资源、水环境、水管理等有关的科技论文。因此,要求稿件内容有明确的主题,所介绍的科学技术有明显的创新性、先进性和实用性。2本刊欢迎下列内容的稿件,特别欢迎各类基金资助项目及其他重大科技项目的研究论文。(1)水资源利用、配置、节约和保护,包括:水资源形成、可再生性维持机理及时空变化规律;变化环境下的水循环及其伴生过程演化机理;水资源利用与生态保护的协调关系;河湖水系连通的水资源布局和调配;地表水、地下水及非传统水资源综合利用与调配;大区域干旱演变规律及风险评估;水资源的可持续利用方式及新型水资源的开发利用等。 相似文献
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《水利水电科技进展》2021,(5)
正为方便作者投稿,特将本刊的性质和对稿件的要求简要介绍如下:1本刊是一份科学技术期刊,主要刊登与水科学、水工程、水资源、水环境、水管理等有关的科技论文。因此,要求稿件内容有明确的主题,所介绍的科学技术有明显的创新性、先进性和实用性。2本刊欢迎下列内容的稿件,特别欢迎各类基金资助项目及其他重大科技项目的研究论文。(1)水资源利用、配置、节约和保护,包括:水资源形成、可再生性维持机理及时空变化规律;变化环境下的水循环及其伴生过程演化机理;水资源利用与生态保护的协调关系;河湖水系连通的水资源布局和调配;地表水、地下水及非传统水资源综合利用与调配;大区域干旱演变规律及风险评估;水资源的可持续利用方式及新型水资源的开发利用等。 相似文献
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《水利水电科技进展》2018,(6)
正为方便作者投稿,特将本刊的性质和对稿件的要求简要介绍如下:1本刊是一份科学技术期刊,主要刊登与水科学、水工程、水资源、水环境、水管理等有关的科技论文。因此,要求稿件内容有明确的主题,所介绍的科学技术有明显的创新性、先进性和实用性。2本刊欢迎下列内容的稿件,特别欢迎各类基金资助项目及其他重大科技项目的研究论文。(1)水资源利用、配置、节约和保护,包括:水资源形成、可再生性维持机理及时空变化规律;变化环境下的水循环及其伴生过程演化机理;水资源利用与生态保护的协调关系;河湖水系连通的水资源布局和调配;地表水、地下水及非传统水资源综合利用与调配;大区域干旱演变规律及风险评估;水资源的可持续利用方式及新型水资源的开发利用等。 相似文献
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《水利水电科技进展》2021,(1)
正为方便作者投稿,特将本刊的性质和对稿件的要求简要介绍如下:1本刊是一份科学技术期刊,主要刊登与水科学、水工程、水资源、水环境、水管理等有关的科技论文。因此,要求稿件内容有明确的主题,所介绍的科学技术有明显的创新性、先进性和实用性。2本刊欢迎下列内容的稿件,特别欢迎各类基金资助项目及其他重大科技项目的研究论文。(1)水资源利用、配置、节约和保护,包括:水资源形成、可再生性维持机理及时空变化规律;变化环境下的水循环及其伴生过程演化机理;水资源利用与生态保护的协调关系;河湖水系连通的水资源布局和调配;地表水、地下水及非传统水资源综合利用与调配;大区域干旱演变规律及风险评估;水资源的可持续利用方式及新型水资源的开发利用等。 相似文献
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《水利水电科技进展》2017,(6)
<正>为方便作者投稿,特将本刊的性质和对稿件的要求简要介绍如下:1本刊是一份科学技术期刊,主要刊登与水科学、水工程、水资源、水环境、水管理等有关的科技论文。因此,要求稿件内容有明确的主题,所介绍的科学技术有明显的创新性、先进性和实用性。2本刊欢迎下列内容的稿件,特别欢迎各类基金资助项目及其他重大科技项目的研究论文。(1)水资源利用、配置、节约和保护,包括:水资源形成、可再生性维持机理及时空变化规律;变化环境下的水循环及其伴生过程演化机理;水资源利用与生态保护的协调关系;河湖水系连通的水资源布局和调配;地表水、地下水及非传统水资源综合利用与调配;大区域干旱演变规律及风险评估;水资源的可持续利用方式及新型水资源的开发利用等。 相似文献
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《水利水电科技进展》2014,(1)
<正>为方便作者投稿,特将本刊的性质和对稿件的要求简要介绍如下:1本刊是一份科技期刊,主要刊登与水科学、水工程、水资源、水环境、水管理等有关的科技论文。因此,要求稿件内容有明确的主题,所介绍的科学技术有明显的创新性、先进性和实用性。2本刊欢迎下列内容的稿件,特别欢迎各类基金资助项目及其他重大科技项目的研究论文。(1)水资源利用、配置、节约和保护,包括:水资源形成、可再生性维持机理及时空变化规律;变化环境下的水循环及其伴生过程演化机理;水资源利用与生态保护的协调关系;河湖水系连通的水资源布局和调配;地表水、地下水及非传统水资源综合利用与调配;大区域干旱演变规律及风险评估;水资源的可持续利用方式及新型水资源的开发利用等。 相似文献
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《水利水电科技进展》2017,(3)
<正>为方便作者投稿,特将本刊的性质和对稿件的要求简要介绍如下:1本刊是一份科学技术期刊,主要刊登与水科学、水工程、水资源、水环境、水管理等有关的科技论文。因此,要求稿件内容有明确的主题,所介绍的科学技术有明显的创新性、先进性和实用性。2本刊欢迎下列内容的稿件,特别欢迎各类基金资助项目及其他重大科技项目的研究论文。(1)水资源利用、配置、节约和保护,包括:水资源形成、可再生性维持机理及时空变化规律;变化环境下的水循环及其伴生过程演化机理;水资源利用与生态保护的协调关系;河湖水系连通的水资源布局和调配;地表水、地下水及非传统水资源综合利用与调配;大区域干旱演变规律及风险评估;水资源的可持续利用方式及新型水资源的开发利用等。 相似文献
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陈莹 《水利科学与寒区工程》2023,(3):84-86
本文利用PHREEQE软件对承德市某研究区域周边浅层地下水的水文水化学迁移演变特征进行模拟,分析典型监测点浅层地下水中主要离子在特征条件下的水化学特征演化及地下水水文变化情况。结果表明:(1)本研究范围内,浅层地下水中的主要阳离子在迁移过程中受到了阳离子交换作用及裂隙型水-岩交换作用的影响;(2)随着浅层地下水迁移,研究区内浅层地下水水温及水位变化幅度小,且不易受到周边地下水开采活动影响。研究结果对理解研究区域浅层地下水的水文水化学特征具有一定的参考价值。 相似文献
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根据冗各电站地下厂房开挖支护的施工顺序,以隐式杆单元模拟锚杆,以壳单元模拟混凝土喷层,采用三维非线性有限元技术,对洞室群的开挖支护动态过程进行了模拟计算。通过三维非线性有限元计算分析得到:洞室群动态开挖过程中围岩应力变形的分布规律,围岩塑性区的发展规律,锚杆受力变化情况。计算结果表明:整个开挖过程中,洞周围岩位移变化规律正常,量值较小,塑性区主要分布在洞室周边,围岩稳定性较好;但在洞室交叉口处围岩的变形较大,出现较大范围的塑性区,在此基础上提出了支护措施优化方案,并对优化方案的效果进行了评价。 相似文献
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The relocation of unionacean mussels is commonly used as a conservation and management tool in large rivers and streams. Relocation has been used to recolonize areas where mussel populations have been eliminated by prior pollution events, to remove mussels from construction zones and to re-establish populations of endangered species. More recently, relocation has been used to protect native freshwater mussels from colonization by the exotic zebra mussel Dreissena polymorpha. We conducted a literature review of mussel relocations and evaluated their relative success as a conservation and management strategy. We found that 43% of all relocations were conducted because of construction projects that were forced to comply with the Endangered Species Act 1973 and that only 16% were monitored for five or more consecutive years. Most (43%) relocation projects were conducted from July to September, presumably a period when reproductive stress is relatively low for most species and the metabolic rate is sufficient for reburrowing in the substrate. The mortality of relocated mussels was unreported in 27% of projects; reported mortality varied widely among projects and species and was difficult to assess. The mean mortality of relocated mussels was 49% based on an average recovery rate of 43%. There is little guidance on the methods for relocation or for monitoring the subsequent long-term status of relocated mussels. Based on this evaluation, research is needed to develop criteria for selecting a suitable relocation site and to establish appropriate methods and guidelines for conducting relocation projects. 相似文献
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In the lower River Murray, Australia, populations of gastropods have declined markedly over the past 40 years. Of the native fauna of about 18 species, only the ancylid Ferrissia petterdi remains common (but in patches), and another five species feature in sporadic local resurgences. Until recently the viviparid Notopala was thought to be extinct. The introduced physid Physa acuta is widespread, but in low numbers. The decline probably is associated with flow regulation, high turbidity and the introduction of common carp. Snail populations have persisted, however, in irrigation pipelines fed from the river, where they periodically cause blockages. This paper reports the discovery of the only known populaion of Notopala hanleyi in a pipeline where the inner wall accumulates microbial and other organic matter, providing high quality food for snails. In the Murray before regulation most of the periphytic biomass was probably microbial, as fluctuating water levels would have maintained littoral communities in a highly productive, early state of succession his postulated that, by stabilizing seasonal water levels, regulation has promoted the production of filamentous green algae, an inferior food source, and so displaced snail populations from the open aquatic environment. 相似文献
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简述天湖水电站投运以来各种故障的表现形式,分析其原因,提出了相应的处理方法及措施,并对合理利用国内外设备提出建议。 相似文献
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Various designs of low‐head dams are used to rehabilitate streams or forestall upstream channel incision after channelization. We report on the efficacy of using notched sills and grade control structures (GCS) to restore the fish assemblage in Luxapallila Creek, Mississippi. We tested the null hypotheses that habitat variables and species richness, evenness, and assemblage structure would not differ among: (1) a channelized segment with no modifications; (2) a channelized segment mitigated by the installation of sills and GCS; (3) a segment upstream of the installations and undergoing channel incision; and (4) an unaltered segment. Although habitat variables changed, neither species richness, evenness, nor fish assemblage structure differed between mitigated and channelized segments with both exhibiting less richness and different assemblage structures than the unaltered segment. Lack of differences in species richness between the incised and unaltered segments suggest that the GCS may have halted the negative effects of upstream channel incision before species were extirpated. Conspicuous habitat differences between the altered (channelized and mitigated) and unaltered segments were lack of backwaters and canopy coverage and finer substrates in the altered segments. Our results suggest a more comprehensive rehabilitation strategy is required in Luxapallila Creek. Published in 2003 by John Wiley & Sons, Ltd. 相似文献
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NUMERICAL STUDY OF WAVE EFFECTS ON SURFACE WIND STRESS AND SURFACE MIXING LENGTH BY THREE-DIMENSIONAL CIRCULATION MODELING 总被引:1,自引:0,他引:1
LIANG Bing-chen LI Hua-jun LEE Dong-yong 《水动力学研究与进展(B辑)》2006,18(4):397-404
1. INTRODUCTION Coastal and continental shelf regions are characterized by intensive interaction between wave and current. These regions are of great economic significance to mankind. Therefore, the modeling of wave and current as well as their mutual int… 相似文献