九龙水库岩石物理力学性能试验研究

拟建的沾益县九龙水库位于云南省曲靖市沾益县西平镇天生坝下村,在珠江流域源头南盘江上,拟建的沾益县九龙水库是一座以农业灌溉、人畜饮水等为主,兼有下游防洪的小一型水利工程。     

香港采石场项目雨水影响模拟

香港安达臣道石矿场用地开发项目位于东九龙排水系统最上游,并位于东九龙排水总体规划研究区内.东九龙排水计划提出整体排水改善工程,以配合东九龙地区的未来发展.本研究采用InfoWorks ICM(版本5.5)模拟软件,在东九龙排水模型的基础上模拟拟建的排水系统,对香港安达臣道石矿场用地发展项目对现状雨水系统的影响进行评估,并提出可行的缓解方案.     

浅析情久水库工程地质勘察

拟建情久水库位于开阳县双流镇情久村,水库所在光洞河为长江流域乌江支流清水江的鱼粮河一级支流。文章主要针对了水库的工程地质问题进行了详细的分析探讨。     

肯尼亚KarimenuⅡ大坝库区工程地质评价

拟建的KarimenuⅡ水库位于肯尼亚中部,是一座为城市供水的中型水库,枢纽工程主要建筑物有主坝、副坝、溢洪道、输水(导流)涵洞等。在取得工程地质条件勘测资料的基础上,针对库区渗漏、浸没等工程地质问题进行分析、评价,对水库设计、施工具有参考作用。     

深圳溪山美地园

溪山美地园住区用地呈南高北低走势,且较大部分为填土区,地貌复杂。基地四周,一路之隔有民治水库、一山之遥有雅宝水库、脚下有拟建的郊野公园,这些自然景观为打造高品质楼盘提供了必要条件。但是,项目周边片区配套设施不成熟,北侧梅坂大道的车流对小区产生噪音干扰。     

四川某水库成库条件分析

某水库位于四川盆地西南边缘,长江上游岷江、大渡河、金沙江之间的三角地带,是解决区域灌溉和乡镇供水的中型水源工程.在对水库进行岩溶水文地质调查、地质测绘的基础上,通过适量的钻探、试验等相关手段查明水库库区、坝区的岩溶水文地质条件,对拟建水库成库条件进行分析论证.分析认为水库坝两岸山体雄厚高陡,山脊高程以及冲沟沟源高程远高...     

青坪特长隧道穿越区岩溶地下水系统研究

青坪特长隧道为贵州省一拟建高速公路控制性工程,穿越泥高向斜地质条件极复杂区,岩溶发育强烈,地下河、岩溶塌陷及隧道涌水等问题急需解决。隧道附近有一座库容700多万方青坪水库,隧道施工会否对水库产生影响,是各方重点关注的问题。以地下水系统的角度对泥高向斜蓄水构造进行研究,旨在对高速公路通过青坪台地段路线方案进行优化。     

罗山县石山口水库至县城输水工程设计

罗山县石山口水库至县城输水工程是县城拟建第二水厂的配套工程,水源为石山口水库水,工程内容包括取水工程(包含取水竖井、栈桥、引水隧洞及电气设计等)、输水工程两部分。对各设计要点进行了详细论述,供同类工程参考借鉴。     

德泽水库面板堆石坝填筑质量控制综述

正1工程概述德泽水库为云南牛栏江滇池补水项目的水源工程,位于曲靖市沾益县北西方向、金沙江支流牛栏江上游的德泽乡境内,大坝为面板堆石坝,最大库容为4. 48亿m3,为大(2)型水库,最大坝高142m,坝顶长386. 9m,宽12. 0m;坝址区受小江断裂带影响大坝地震设计烈度为9度;坝址区出露地层主要为第四系(Q)松散堆积物、泥盆系(D)白云岩、石英砂岩、泥岩、寒武     

青岛市官路水库分散性粘土工程特性及改性试验研究

根据拟建的青岛官路水库筑坝土料常规土工试验、碎屑试验、双比重计试验、针孔试验、石灰掺量改性试验等研究成果 ,结合现场调查取得以下主要结论 :(1)青岛官路水库筑坝土料为分散性土 ,筑坝时必须采取处理措施 ;(2 )在官路水库分散性土料中掺加石灰可把它改性为非分散性土 ,石灰掺量以 1.0 %～ 1.5 %为宜     

汾河上游排污及水质状况调查研究

以2006年度汾河入河排污口调查及汾河上游水质监测资料结果为依据,对汾河水库上游,汾河水库受排污影响及对策进行了分析,以及时了解和掌握汾河上游排污及水质影响状况,从而确保供水安全及山西省的经济发展。     

旧城区城市干道综合整治的可操作性研究——以綦江县九龙大道街道综合整治设计为例

本文以綦江县九龙大道街道综合整治为例,探讨了旧城区城市干道综合整治从前期设计到后期实施的整个过程中的问题与难点,总结了其可操作性方面的经验。     

“龙泉喷玉”与“九龙吐水”的迷思——北京昌平白浮泉、九龙池景观考

北京昌平白浮泉是元大部以及大运河通惠河段的旧源,也是著名的“燕平八景”之一.其名声近年日盛,然而却与昌平另一处曾经著名的明代泉景九龙池相混淆.通过实地调查,扒梳史志、诗文,配合样式分析的方法,辨析了白浮泉之“龙泉喷玉”与犬寿山九龙池之“九龙吐水”2处泉景,指出两者并非一处.九龙池是明陵的附属景观,以“九龙吐水”著称,清代逐渐衰败;白浮泉本无“九龙吐水”,现有的九龙头石雕,可能是清光绪五年(1879年)之后所造.     

Development of an integrated modeling system for improved multi-objective reservoir operation

Reservoir is an efficient way for flood control and improving all sectors related to water resources in the integrated water resources management. Moreover, multi-objective reservoir plays a significant role in the development of a country’s economy especially in developing countries. All multi-objective reservoirs have conflicts and disputes in flood control and water use, which makes the operator a great challenge in the decision of reservoir operation. For improved multi-objective reservoir operation, an integrated modeling system has been developed by incorporating a global optimization system (SCE-UA) into a distributed biosphere hydrological model (WEB-DHM) coupled with the reservoir routing module. The new integrated modeling system has been tested in the Da River subbasin of the Red River and showed the capability of reproducing observed reservoir inflows and optimizing the multi-objective reservoir operation. First, the WEB-DHM was calibrated for the inflows to the Hoa Binh Reservoir in the Da River. Second, the WEB-DHM coupled with the reservoir routing module was tested by simulating the reservoir water level, when using the observed dam outflows as the reservoir release. Third, the new integrated modeling system was evaluated by optimizing the operation rule of the Hoa Binh Reservoir from 1 June to 28 July 2006, which covered the annual largest flood peak. By using the optimal rule for the reservoir operation, the annual largest flood peak at downstream control point (Ben Ngoc station) was successfully reduced (by about 2.4m for water level and 2500m³·s⁻¹ for discharge); while after the simulation periods, the reservoir water level was increased by about 20m that could supply future water use.     

Development of an integrated modeling system for improved multi-objective reservoir operation

Reservoir is an efficient way for flood control and improving all sectors related to water resources in the integrated water resources management. Moreover, multiobjective reservoir plays a significant role in the development of a country’s economy especially in developing countries. All multi-objective reservoirs have conflicts and disputes in flood control and water use, which makes the operator a great challenge in the decision of reservoir operation. For improved multi-objective reservoir operation, an integrated modeling system has been developed by incorporating a global optimization system (SCE-UA) into a distributed biosphere hydrological model (WEB-DHM) coupled with the reservoir routing module. The new integrated modeling system has been tested in the Da River subbasin of the Red River and showed the capability of reproducing observed reservoir inflows and optimizing the multi-objective reservoir operation. First, the WEB-DHM was calibrated for the inflows to the Hoa Binh Reservoir in the Da River. Second, the WEB-DHM coupled with the reservoir routing module was tested by simulating the reservoir water level, when using the observed dam outflows as the reservoir release. Third, the new integrated modeling system was evaluated by optimizing the operation rule of the Hoa Binh Reservoir from 1 June to 28 July 2006, which covered the annual largest flood peak. By using the optimal rule for the reservoir operation, the annual largest flood peak at downstream control point (Ben Ngoc station) was successfully reduced (by about 2.4 m for water level and 2500 m³·s⁻¹ for discharge); while after the simulation periods, the reservoir water level was increased by about 20 m that could supply future water use.     

城市滨水地区开放空间初探——以滦南北河中央公园景观规划为例

北河是唐山滦南的重要水系,拥有源远流长的历史文脉与得天独厚的地理优势。北河湿地中央公园是北河与滦南县城城联系最为紧密的地段。如何使公园联结起周边众多资源,在当代城市生活中发挥更为积极的作用,创造更为人性化的公共场所并建立起现代休闲滨水开放空间模式,是此次项目研究和设计的核心。规划分析了公园存在的问题及文化景观要素特质,并以整体性、公共性、亲水性、可达性及生态性的设计理念,在加强城市联系、传承历史人文、营造优美生态环境、打造亲水活动四个方面提出了相应的规划对策。     

江边水电站厂区初始地应力场研究分析

锦屏二级水电站位于雅砻江干流锦屏大河湾上,是雅砻江干流上的重要梯级电站,厂区内地形起伏较大,属于典型的“V”型河谷。由于厂区靠近河谷,因此其地应力场的量级应该较高,并且地应力方向分布较为复杂。为了掌握厂区地应力场的分布规律和量级,利用厂区的地应力测值,根据河谷演化理论和神经网络对厂区的地应力场进行了回归分析,回归结果表明,厂区的地应力应在20~30MPa,属于中偏高地应力场,可以诱发岩爆现象,同时验证了河谷演化理论和神经网络相结合的方法是反演深切河谷地应力场的有效手段。     

浮山县雨花河公园规划设计分析

主要介绍了浮山县雨花河公园的构思理念、绿化原则和规划方案,在对原有水库加以利用和生态保护的基础上,结合原有的地形地貌,对该公园的备景观小品规划设计进行了论述,以期营造一个自然景观与人文景观相互交融的郊野公园。     

库水位升降对滑坡体稳定性影响分析

结合三峡兴山县A滑坡的地理条件,对库水位涨落时A滑坡的稳定性进行了分析,利用极限平衡法研究了水位升降速度对滑坡稳定性的影响,得出的结论对滑坡的治理工作具有指导作用。     

Drivers of water quality in a large water storage reservoir during a period of extreme drawdown

This study examined the drivers of water quality in a large water storage reservoir (Lake Hume) during a period of extreme drawdown (to less than 3% of capacity). During the period of extreme drawdown, the reservoir can be thought of as consisting of three separate but inter-related parcels of water. The warm surface mixed layer was about 6m deep. Cold water inflows from the Mitta Mitta River undershot the surface mixed layer in the Mitta Mitta arm of the reservoir and flowed along the bottom of the reservoir to the Dam Wall without substantial interaction with the surface mixed layer. When inflows from the Murray River occurred, the temperature of these inflows was similar to that of the surface mixed layer within the dam and the flows appeared to move within the surface mixed layer towards the Dam Wall. These Murray River inflows were insufficient to promote total mixing of the surface and bottom waters. The Murray River arm of the reservoir became a 'hot spot' for nutrient production. Stratification and subsequent anoxic conditions promoted the release of nutrients - ammonium, organic N and total P - from the sediments into the overlying hypolimnion. Because the depth of the lake was relatively shallow due to the extreme drawdown, wind driven events lead to a substantial deepening (turnover) of the thermocline allowing periodic pulses of nutrients into the warm surface layer. These nutrient pulses appeared to stimulate cyanobacterial growth. Warm inflows from the Murray River then served to push the blooms formed in the Murray arm into the main body of the lake.