大工13秋《水利水能规划》在线作业1,2,3

大工13秋《工程力学〔一〕》在线作业3 单项选择题：CDCDA DBACC判断题：BABAB AABAA大工13秋《工程力学〔一〕》在线作业1 单项选择题：CABCB DABAD判断题：BABBA ABBBA大工13秋《工程力学〔一〕》在线作业2 单项选择题：CDCAD BCBBB判断题：BBAAB BBAAA大工13秋《工程力学〔一〕》在线作业3一、单项选择题〔共 10 道试题，共 60 分。

〕V1. 切开一根梁式杆或单刚结点，相当于去掉〔〕个多余约束。

A. 1B. 2C. 3D. 4总分值：6 分2. 跨中作用集中力F的两端简支梁，跨中截面C的剪力大小为〔〕。

A. F/2B. -F/2C. FD. 不确定总分值：6 分3. 关于变形体虚功原理以下说法不正确的选项是〔〕。

A. 外力系必须是平衡力系B. 位移必须满足虚位移条件C. 力和位移两个状态之间是有关联的D. 适用于任意力-变形关系的变形体总分值：6 分4. 用力矩分配法计算无侧移刚架时，假设等截面直杆远端为定向支承，传递系数为〔〕。

A. 0C. 1D. -1总分值：6 分5. 在径向均布荷载作用下，三铰拱的合理轴线为〔〕。

A. 圆弧线B. 抛物线C. 悬链线D. 正弦曲线总分值：6 分6. 以下选项不属于图乘法计算位移的前提条件的是〔〕。

A. 杆段为等截面直杆B. 各杆段截面物理参数是常量C. 被积函数中至少有一个是直线图形D. 两个被积函数均为直线图形总分值：6 分7. 静定结构的支座发生移动时〔〕。

A. 杆件无变形，结构无位移B. 杆件无变形，结构有位移C. 杆件有变形，结构无位移D. 杆件有变形，结构有位移总分值：6 分8. 对称结构作用反对称力时，结构的剪力图是〔〕的，弯矩图示〔〕的。

A. 对称，反对称B. 对称，对称C. 反对称，对称D. 反对称，反对称总分值：6 分9. 位移法的基本未知量是〔〕。

A. 支座反力B. 杆端弯矩C. 独立结点位移D. 多余未知力总分值：6 分10. 位移法典型方程中的系数rjk表示的是基本体系在〔〕。

大工《水利水能规划》课程考试模拟试卷A答案绝密?启用前大连理工大学网络教育学院《水利水能规划》课程考试模拟试卷答案 2010年3月份考试形式:闭卷试卷类型:(A)一、概念解释(本大题共4小题，每小题5分，共20分)1. 设计代表年答:在水利水电规划设计中，常选择有代表性的枯水年、中水年(也称平水年)和丰水年作为设计典型年，分别称为设计枯水年、设计中水年和设计丰水年，这些年份称为设计代表年。

2. 设计保证率答:水资源利用工程的设计标准，反映了水资源的利用程度，即工程规划设计的既定目标不被破坏的年数占运用年数的百分比。

3. 防洪高水位答:水库在遭遇下游防护对象的标准洪水时，水库调洪所达到的最高水位。

4. 电力系统答:由发电厂、变电、供电系统、用电户共同组成的系统。

二、单项选择题(本大题共4小题，每小题3分，共12分)1、__A__2、__B__3、__B__4、__B__三、简答题(本大题共2小题，每小题13分，共26分)1. 防洪的主要任务是什么,通常采用哪些工程措施或非工程措施,请举出其中的一方面措施。

答:防洪的主要任务是在发生各设计频率洪水时要保护水库本身及上、下游防护目标的安全。

主要的工程措施有:兴修水库、堤防等防洪工程，此外改善流域下垫面条件、疏浚河道也是工程措施。

2. 水利水电经济计算的主要任务有哪几个方面, 答:1) 对计划兴建的水利工程，在作好勘测、规划、设计的基础上，研究不同规模、不同标准、不同投资、不同效益的各个比较方案，通过分析论证和经济计算，从中选择技术上正确、经济上合理、财务上可行的最佳方案。

2) 对已建成的水利工程，研究进一步发挥工程经济效益的途径。

大工《水利水能规划》课程考试模拟试卷(A)答案第1页共2页四、论述题(本大题共2小题，每小题13分，共26分)1. 请阐述水库通常有哪些功能,举一水库说明之。

答:水库通常有防洪与兴利两方面功能，兴利功能主要体现在蓄水、发电、水产养殖、航运等。

大工20春《水利水能规划》在线作业1
试卷总分:100 得分:100
一、判断题(共10 道试题,共40 分)
1.在正常运用的情况下，允许水库消落的最低水位称为防洪限制水位。

答案:错误
2.随机事件的概率介于0与1之间。

答案:正确
3.两变量相关程度密切与否，一般用相关系数表示，r=1时，说明两个向量正相关。

答案:错误
4.当库水位超过设计洪水位时，必须启用非常溢洪道。

答案:错误
5.同一设计频率情况下，入库设计洪水比坝址设计洪水洪峰增大，峰现时间提前。

答案:正确
6.特大洪水是指实测系列和调查到的历史洪水中，比一般洪水大得多的稀遇洪水。

答案:正确
7.日电能累计曲线是日负荷图的出力值与其相应的电量之间的关系曲线。

答案:正确
8.灌溉水库属变动供水量调节，主要原因是水库入库径流各年不同。

答案:错误
9.分期设计洪水只适应于溢洪道有闸门的水库。

答案:正确
10.对于年调节水电站，满足设计保证率要求的关键在设计枯水年的供水期。

答案:正确
二、单选题(共5 道试题,共30 分)
11.分期设计洪水时应尽可能根据不同成因的洪水，把全年划分为若干分期。

分期不宜过短，一般应不短于（）。

A.1天
B.1周
C.1月
D.1年
答案:C
12.与水资源的利用关系密切的主要部门，不包括下列（）。

A.发电与灌溉。

大工16秋《水利水能规划》大作业及要求答案Big work 16 autumn "water conservancy and hydropower planning" major operations and requirements answerJob contentTitle: time series method for calculating favorable reservoir capacityLearning center:Major:Year: Spring / autumnStudent number:Student：Tutor:1 basic knowledge1.1 regulation of reservoir profitExcept for non regulated water conservancy and hydropower projects that can only supply natural runoff water, all of them can adjust the storage capacity to a certain extent.The relation between regulation performance and reservoir capacity: the longer the cycle, the better the regulationperformance and the larger the storage capacity.1, according to the adjustment cycle points:(1) daily regulation: the regulation period of daily regulation is one day and four days. That is to say, the daily water demand of reservoir will be adjusted by the daily water demand of the water sector. Daily variation of power load.(2) weekly adjustment: the regulation cycle of the week adjustment is one week, and the inflow runoff which is not changed within a week is adjusted according to the water demand process of the water sector. The weekly variation of power consumption in a period of time.(3) annual adjustment: the annual runoff of inland rivers has changed greatly, and the water supply during the rainy season and the dry season is very different. The task of regulating the annual runoff is to store and increase the surplus water during the flood season in accordance with the annual domestic water demand process in the water sector, so as to increase the water supply during the water shortage period, and the regulation cycle is less than one year. According to the variation of the abundance and drought in the runoff, the regulation of the abundance and deficiency of the seedlings was carried out.(4) adjustment over many years: the task of regulating runoff for many years is to utilize the storage capacity of the reservoir to save the surplus water in the year of the flood so as to increase the water supply in the dry season. For manyyears, the drought and flood change year by year.2, according to reservoir task points(1) single task streamflow regulation;(2) comprehensive utilization of runoff regulation;3, according to the reservoir water supply mode(1) fixed water supply;(2) variable water supply;4. Other classifications(1) reverse regulation reservoir: the downstream reservoir is adjusted again according to the demand of water.(2) compensation adjustment of a single reservoir: mutual compensation between reservoir and downstream water supply.(3) adjustment of reservoir group compensation: hydrology, storage capacity and power compensation.1.2, the concept of regulatory cycleConstruction of the so-called regulatory cycle, refers to the reservoir capacity of the reservoir, from storage to full storage and then emptying of the complete storage process. The longer regulation period, the better regulation performance ofreservoir and the corresponding storage capacity.1.3 hour calendar method1, according to the water use process to determine reservoir benefit storage capacityKnown: natural runoff, dead storage capacity, according to the requirements of water to facilitate the storage capacity and facilitate the settlement of water storage.(1) annual adjustment calculation process without water loss:Determine the regulatory cycle: usually in October of that year, second years, June;The difference between water demand and natural runoff was calculated monthly from 10 to June;The accumulated difference is the favorable reservoir capacity and the advantageous reservoir position;Returning to the beginning of the flood season, the reservoir will be stored, discharged and abandoned.Determine the water level of the downstream section according to the discharge.(2) annual adjustment calculation process of water loss (considering water evaporation loss):Use of water loss calculation results;Determine the water area of each period;Calculate the evaporation loss at each period;The difference between the amount of water supply + evaporation loss and natural runoff is calculated monthly;The difference between the accumulated traffic;Determine the reservoir capacity and profit and fill water level, and determine the reservoir operation process.Summary and induction:The greater the difference between runoff and water use, the greater the storage capacity;Under the condition of one charge and storage, the sum of the water shortage and the loss amount accumulated during the whole water supply period, that is, the favorable storage capacity is independent of the amount of water allocated within each month;The total adjustment water quantity in water supply period is converted into flow, and then is adjusted by the average runoff for many years, and the adjustment coefficient is obtained to reflect the regulating performance.2, according to the favorable reservoir capacity to determinethe flow adjustmentAccording to the two calculation methods: the annual adjustment process of water loss and the annual adjustment process of water loss loss can be seen:(1) if the water loss is not considered, adjust the flow rate = (W for +V Xing), /T supply(2) if water loss is consideredAdjust flow = = W (W, +V, /T)(3) the storage capacity factor B=V is /W and the average annual rate is 830%;Over more than 30% years to adjust.3, according to the reservoir capacity and reservoir operation plan, the reservoir operation process is deduced:Constant flow operation: irrigation, water supply, shipping, etc., actual demand.Constant power operation: in order to meet the requirement of power consumption, the water quantity of hydropower station should be adjusted to the change of load.Because the output is related to the flow rate and the head, and the flow is related to the head, the calculation of the output is calculated by trial calculation.2 calculate content2.1 calculation dataAccording to the basic data given, the calculation process is described in detail.The average annual discharge of the dam site of a proposed reservoir is annual average water inflow. According to the design guarantee rate = 90%, the selected design low flow year hydrograph is shown in table 1. The initial storage capacity. Try to calculate the regulated flow rate (excluding water loss) and the adjustment factor.Table 1 monthly flow data sheet for designing low flow yearAverage of 789101112123456 years in MarchMonthly average flow ()294824167644875413.52.2 determine reservoir regulation performanceAccording to the basic data, the reservoir regulation performance is determined, and the calculation process and final results are described in detail.2.3 determine the regulated flowAccording to the basic data for flow adjustment calculation, detailed description of the calculation process and final results.2.4 adjustment factorAccording to the basic data given adjustment coefficient calculation, detailed description of the calculation process and final results."Water conservancy and hydropower planning offline operation" course learning requirementsI. the form of curriculum assessmentThe assessment of this course is offline, with online homework. The final course results include 80% offline homework scores and +20% online assignments. Offline jobs and requirements are downloaded from the offline homework module of the course.Two, offline job requirementsStudents need to download the "big 16" autumn "planning of water conservancy and hydropower operations and requirements in platform offline operation, watch the course video courseware, courseware based on knowledge and theory, fill in the" big 16 "autumn" planning of water conservancy and hydropower operations and requirements, and submit to the course platform, off-line homework as one of the main basis for the submission of course assessment.Three, offline job submission form and deadlineStudents need to submit an offline job in the form of an attachment (the size of the attachment is limited to 10M), select the completed job, and click "turn in". As shown in the following figure.Deadline: March 7, 2017. Prior to this, students can submit offline work at any time. If you need to modify, you can upload new files directly. The platform will automatically overwrite the original file.Four, offline operation markingThe teacher will be in operation after the closure of centralized marking offline operation, the offline operation is not carried out before the deadline to submit any form of marking.Matters needing attention：Complete the offline operation independently, allowed plagiarism or ask someone to do, any similarity scores to 0!School of network education, Dalian University of TechnologyNovember 2016。