构皮滩水电站尾水隧洞特大断面软岩开挖支护

构皮滩水电站尾水隧洞软岩不良地质洞段占尾水隧洞全长的70%以上,确保软岩洞段的安全快速开挖是尾水隧洞施工的关键,尤其一次支护的强度对洞室稳定影响极大。为此,施工中根据软岩的地质特点及尾水隧洞开挖的断面尺寸,采取分层开挖和超前锚杆的施工方式和型钢拱架进行一次支护。根据监测结果,围岩变形很小,一次支护效果良好,表明构皮滩水电站尾水隧洞大断面软岩采取的开挖方式和一次支护方式是成功的。     

山区水库溢洪道和放水洞工程布置优化组合及型式选择

山区河流上修水库与平原水库不同的是，地形复杂、地质条件各异。要充分利用坝址处的地物地貌及地质条件，如何趋利避害，合理布置水库的土坝走向，放水洞与溢洪道的位置及型式，以取得安全、经济、美观三者协调统一。     

大伙房水库输水工程隧洞结构应力仿真分析

应用有限元法对辽宁省大伙房水库输水工程主体隧洞结构进行了仿真分析,从而得到隧洞结构的应力分布规律,研究确定薄弱部位并采取相应的稳定措施,以便保证隧洞施工的安全与经济。     

HYDRAULIC CHARACTERISTICS OF WATER-WINGS FOR THE MIDDLE-PIER OF A DISCHARGE TUNNEL

1. INTRODUCTION In the design of a discharge tunnel with high water head and large flow, it is important to study the cavitation and the energy dissipation, such as the prevention of cavitation for slots of various gates [1-4], the effects of entrained ai…     

Applicability of the flood‐pulse concept in a temperate floodplain river ecosystem: thermal and temporal components

Annual growth increments were calculated for blue catfish (Ictalurus furcatus) and flathead catfish (Pylodictis olivaris) from the lower Mississippi River (LMR) to assess hypothesized relationships between fish growth and floodplain inundation as predicted by the Flood‐Pulse Concept. Variation in catfish growth increment was high for all age classes of both species, and growth increments were not consistently related to various measures of floodplain inundation. However, relationships became stronger, and usually direct, when water temperature was integrated with area and duration of floodplain inundation. Relationships were significant for four of six age classes for blue catfish, a species known to utilize floodplain habitats. Though similar in direction, relationships were weaker for flathead catfish, which is considered a more riverine species. Our results indicate the Flood‐Pulse Concept applies more strongly to temperate floodplain‐river ecosystems when thermal aspects of flood pulses are considered. We recommend that future management of the LMR should consider ways to ‘recouple’ the annual flood and thermal cycles. An adaptive management approach will allow further determination of important processes affecting fisheries production in the LMR. Copyright © 2006 John Wiley & Sons, Ltd.     

鹰嘴岩隧道软弱破碎岩体的开挖与施工

渫水皂市水利枢纽左岸上坝公路鹰嘴岩隧道围岩主要为Ⅱ、Ⅲ、Ⅳ、Ⅴ类围岩，地质条件复杂，成洞条件差。在隧道施工中，遵循“短进尺，弱爆破、少扰动、早支护”的原则，及时进行监控量测，采取有效的加固措施，取得了良好效果，确保了工程进度与安全。     

跨海通道与日本经济

日本由于岛国的独特地理特征，为了促进其经济和社会的发展，在二战之后进行了大规模的跨海桥梁以及海底隧道建设，从而实现了四大主岛陆路交通的联结。日本一系列跨海通道的建设，对促进其经济腾飞、实现地区均衡发展，起到了积极的推动作用。这对我国当前的五大跨海交通工程，具有重要的启示和借鉴。     

故县水库的开发任务与调度运用

通过对故县水库水文特征分析,论述了水库开发任务和要求。并根据水库的洪水、径流、泥沙特性,拟定了水库防洪运用的控制条件和运用方式,以及水库的兴利运用水位和原则。对水库工程的投资和效益作出了分析和评价。     

卡伦水库洪水风险调度效益浅析

本文主要从选择卡伦水库实行洪水风险调度的依据、水库洪水控制标准、调度原则及效益等方面论述卡伦水库实行洪水风险调度的重大意义。特别强调在水库洪水调度过程中适度承担风险,必须确保工程安全运行、科学调度,加强管理,依法防洪,合理蓄水,要正确把握水库安全度汛与水资源合理利用的关系,正确处理防洪与兴利的关系,正确处理风险与效益的关系,充分发挥水库的综合效益。适度承担风险进行水库洪水调度,既充分利用雨洪资源,又尽最大可能变水害为水利,实现雨洪资源化,达到人、水与自然和谐共处,促进经济社会协调发展。     

用环境水利理念和方法建设富锦市城市防洪工程

本文结合富锦市城区堤防建设论述了城市防洪建设应从单一防洪目标逐步过渡到区域性多目标治理。以水利工 程为载体,推动促进环境的改善,实现防洪、水资源、生态环境以及城市景观建设的协调统一。