The maximum water - tight grade can be up to p40 适用于薄壁结构和灌注桩混凝土施工。
For a single jet plunging into a cushion pool , a method of calculating depth of the pool is introduced according to the maximum water pressure on the pool bottom and the jet theory ; 7 对于单股水舌入射水垫塘的情况,以射流理论为依据,建立了以水垫塘底板上所受动水压力为控制参数的水垫塘深度的计算方法; 7
( 4 ) the maximum water quantity becomes greater , the better is the filtering bed permeability , the higher the river hydraulic conductance , the higher the river level , the larger the water - collecting area and the bigger the distance between collecting pipes . the water quantity varies directly with drawdown ( 4 )滤床的渗透性能越好,河床水力传导系数越高,河水水位越高,取水面积越大,取水管之间的间距越大,则最大取水量越大;水位降深与取水量成正比关系。
Article 9 in order to verify the functioning of an enterprise ? s wastewater , sewage and sludge treatment facilities , competent authorities at all levels shall , when performing inspection work pursuant to article 26 , paragraph 1 , subparagraph 1 of this act , notify the enterprise 14 days prior to the inspection to , on the day of inspection , increase its production to conditions of reported or already actually achieved routine maximum water pollution output volumes and to operate its wastewater , sewage and sludge treatment facilities in order to facilitate inspection 第9条各级主管机关,依本法第二十六条第一项第一款规定检查时,为查证事业废(污)水或污泥处理设施之操作功能,应于检查十四日前,通知事业于检查当日,将其生产提高至申报或实际已达之经常最大水污染产生量之状态下,操作废(污)水或污泥处理设施,以供检查。
( 5 ) the maximum water level risen by the enclose tideland cultivation around the reservoir is 0 . 66m , the responding quality is 2000mvs , which heavily effect the environment around the reservoir . the reservoir " s water level is risen because cross section and flood canal become narrow , which caused by building dam , this makes groundwater unsmooth , drainage , even flow from a lower to a higher space and soil salinized 66m ,且为2000m ’儿的常年洪水,对库区周边环境的影响较大,因打坝筑堤缩小过水断面和行洪通道造成水库水位进一步抬升,致使库区周边灌区地下水排水不畅,乃至倒灌,型成士地盐碱化。
In this paper , a set of medium - and - long - range hydrologic forecast models were established for predicting water regime in shanghai , including three hydrological series , annual rainfall and rainfall during flood season for one representative station and annual maximum water tide level at huang - pu park . the prediction models includes two parts . one is quantitative ones which are mainly studied in the paper , including ar ( p ) , gm ( l , l ) , modified gm ( 1 , 1 ) and threshold ar modeling ; the other is markov chain qualitative modeling 研究分两个方面,一是定量预测,是本论文的主要研究内容,共建立了四个预测模型,分别是ar ( p )模型、 gm ( 1 , 1 )模型、改进gm ( 1 , 1 )模型及tar模型;其二是建立了马尔柯夫定性预测模型,给出分级预测结果。
The model combines simulation method and optimization method to regional water supply and utility system , analyzing long series water supply and demand system with the object of the annual maximum water supply , counting water shortage capacity and its distributing probability , describing water shortage risk with risk character indexes . 4 . when the water shortage risk is calculated , the input and output macro - economic model of water resource is employed to evaluate economic losses due to water shortage 该模型综合模拟方法和优化方法的优点,在对区域供用水系统进行模拟的同时,采用年最大供水量为目标函数对水资源系统进行长系列的供需分析,然后统计区域水资源系统的缺水量及其概率分布,同时用水资源系统的风险性能指标对水资源短缺风险进行描述。