The dissertion, after introducing physical geography situation and societal economic sitiuation of chongqing, has also analysed the basic feature of water resources in chongqing, at present the water resources utilization in chongqing is still in traditional phase. there are so many faults and shortcomings in water resources management system. the construction of water resources institutions and regulations is fallen behind. the supply of water resoures has not sufficiently satisfied the demand to water resources. the condition of water quality has not radically improved. soil losses is still serious. the incidence of flood and drought is very high. in accordance with present condition of water resources utilization in chongqing, the dissertion argues that it should strengthen people ' s understanding to water resources sustainable utilization for chongqing ; reform the present water rexources management system and have a try on water affairs management system in chongqing ; make effort to construction of water resources " institutions and regulations ; realize demand management, constuct save - water model society ; according to actual condition, strength water utilization constrution, then realize the balance between water resources supply and demand ; according to the idea of " control resources, conduct flow ", control water pollution, realize sanitary generation ; control soil losses and protect water enviroment ; construc t the system of flood control and diaster prevent
在對重慶市的自然地理情況和社會經濟情況作了介紹之後,還分析了重慶市水資源的基本特徵,目前重慶市的水資源利用還處在傳統的開發利用階段,水資源管理體制還存在許多弊端,水的法規制度建設也相對落後,水的供給還不能完全滿足需求,水質狀況沒有得到根本性的改善,水土流失還很嚴重,水旱災害發生的頻率比較高。針對重慶市水資源利用的現狀,本文提出:應
加強對水資源持續利用的認識;改革目前重慶市的水管理體制,嘗試水務局管理體制,相應
加強水的法規和制度建設,實現需水管理,建立節水型社會;根據實際情況,
加強水利建設,實現水的供需平衡;依據「控源導流」的思想控制水污染,實現清潔生產;治理水土流失,保護水環境;建設防
洪減災體系。
So this article analyses deeply in the method of ensur ' my designing food rolume which is an important element to affect the " designimy height of bridge " it brings forward an " arverage optiminmy suiting line " method which is a bondage discommode series at the same time it puts forward a ensurmy principle for rough coefficient " and " fallimy flood proportion which are both suitable to heilongjiang province at last this article introduces the " three - days rainimy rolume " method
本文立足於黑龍江省各種河流的
洪水特點,結合以往工程實際,對影響跨河橋梁設計高度的主要因素? ?設計
洪水流量及其相應
洪水位的確定方法
加以詳細分析。提出有約束不連序系列的
加權優化適線法及適合於黑龍江省的河流粗糙系數和
洪水比降的確定原則,並介紹了三日降雨量法。
Stripping the land in these ways allows faster surface runoff and exacerbates flooding.
這些做法終將使土地裸露、地表徑流
加快,從而
加重了
洪水的威脅。
Senior scientific officer, mr. edwin s. t. lai, in costa rica for flash flood forecasting workshop
高級科學主任黎守德出席哥斯大黎
加暴
洪預報工作坊
For jiangpinghe double - curved arch dam, 3 - d elasto - plastic fem is made, in which the point safety factors of the dam - abutments system and the safety margin for coefficients of sliding resistance on 7 potential sliding blocks of the dam before and after the reinforcement of the dam are calculated under the conditions of the normal storage level and the design flood level respectively based on the results from the analysis made with fem
摘要對江坪河雙曲拱壩進行了三維彈塑性有限元分析,利用有限元應力成果分別計算了正常蓄水位、設計
洪水位等3種工況下
加固前後壩體壩肩系統的點安全系數和7個可能滑動塊體的抗滑富餘系數。
The deposition of sediment in our natural stream channels has greatly aggravated floodwater damages.
泥沙淤積在天然河道,已大大
加劇了
洪水的危害。
It is necessary and pressing to excavate and broaden the floodway to increase the capacity of flood discharge and enhance the standard of flood control
因此,開辟淮河入海水道,擴大
洪水出路,增
加泄
洪能力,提高下游地區的防
洪標準是十分必要和緊迫的。
The flood damage exposes the contradiction between people and flood, population explosion results in that people need more and more land for farming, a lot of flood - plain, flood - plain protection, retarding basin, and ever floodway are occupied by farmers for agricultural purpose. so that major or even middle and small flood can not be smoothly discharged in the river
這場
洪災暴露了建國以來治淮工作中久而未決的一個問題,即局部地區為了解決人多地少的問題,大量侵佔河道行
洪灘地,與
洪水爭地,不給
洪水出路,使得本已不堪重負的河道,即使是中、小
洪水來臨,也處在高水位狀況下運行,
加劇了中、下游地區的防
洪風險。
But this match finished 5 - 2 for the galicians, and sporting de gij n finished eighth that year
1991 / 1992賽季結束,希
洪競技獲得聯賽第八,曼哈林也入選了西班牙隊參
加1992巴塞羅那奧運會。
In chicago humboldt was a natural subject for reflection.
在芝
加哥,人們懷念
洪堡是很自然的。
Narrated by sister initiate jui - lien hung, toronto, canada
加拿大多倫多
洪菊蓮師姊口述
In totentanz 2, a crimson tinted flood is superimposed over a magisterial robed figure, an aryan blonde seated as if on a throne
在《死亡之舞》 2里,染成深紅的
洪水疊
加在一個威風凜凜、身著長袍的人物上? ?一個金發碧眼的雅利安人,如同坐在國王的寶座上一般。
The national guard is helping patrol flooded areas in new england
在新英格蘭
洪災地區,國家防衛隊也
加入了搜尋的隊伍。
Based on the data collecting from previous study results and measuring actually in the spring and neap tide during the flood season in 2001 and dry season in 2003, this paper proposes that the concept of the flood channel should include a more comprehensive implication
本文的研究工作主要包括: 1收集整理海圖資料以及以前的有關實測數據; 2參
加2001
洪季和2003年枯季野外定點、走航觀測和取樣工作; 3
6 diversity fragmentation and evenness of ecological landscape in fukang increase with more utilization and development. the change of landscape pattern about land utilization is mainly area variation of plantation and wasteland in pluvial fan and alluvial plain, the key influence factors are the dynamic of soil moisture and salinity under the development of water and land resource
6 、在阜康各景觀帶中,隨人為開發利用程度的增強,景觀多樣性、破碎度和均勻性增
加;荒漠綠洲土地利用景觀生態格局的變化,集中體現在位於
洪積扇與沖積平原的耕地和荒地面積變動上,關鍵影響因子是水土資源利用下的土壤水鹽動態變化。
The enochian knowledge suggests these regular cataclysmic changes act as an evolutionary agent provocateur, to quicken the resident life forms to the next evolutionary phase prior to exodus from the womb planet
伊諾克的知識讓人想去這些經常的大
洪水變化擔當了一進化的密探,
加速居住生命形態到下一個領先從發源地行星離去的進化的階段。
Danny : downtown to the tujunga
沿著從洪加到…