本文主要对某船厂做了供水管网模型建设,并基于水力模型开展了节能降耗的分析.首先,构建了管网模型,并对其进行精度校验,整体压力误差达到0.2米以内的误差精度;其次,通过管网模型模拟分析了实际船厂所需压力和漏损降低情况;同时,结合管网测点大数据,研究了每天高低峰供水时段、船坞进水时高峰用水时段的压力和漏损关系,实施了进水压力管理,实现了降压方面带来的节能降耗;然后,结合夜间最小流量和管网模型模拟分析管网中漏损位置,进行漏失和其他用水的定位;最后,通过人工复核探测漏失位置并修复.本研究内容给船厂带来了很好的经济效益,也为整个供水行业的节能降耗提供参考.

入湖三角洲的形成和发展过程是冲积河流演变的重要组成部分,三角洲尾闾水道生成、地貌演变机理更是河流动力学研究中的重点问题.利用自然模型法对入湖三角洲形成与形态发展过程进行模型试验,通过改变上游来沙和下游水位探究不同边界条件对三角洲平面形态、纵向推进、横向展宽及垂向抬高的影响.三角洲堆积体先呈舌状推进,随后随朵体的生长而变化,其长宽比先迅速增大后逐渐减小.上游来沙量越大,三角洲长宽比越小,下游水位越高对三角洲尺寸抑制越明显.三角洲纵向推进和横向展宽都呈现先迅速增长,后进入相对平稳期,并出现“台阶式”增长的趋势.来沙越多,横纵推进速度越快,越早出现突变式的增长.水位越高,三角洲越早以较小尺寸进入平稳期,突变周期越长,增长值越小.泥沙主要落淤在三角洲中下游,但较多来沙量会促使泥沙淤积在上游,并使上游河槽深度减小,中下游横截面坡度增大,三角洲整体纵向坡度也增大.

根据涂装车间泄爆能力的评估报告所提出的泄爆要求,并结合工程特点,完成了大跨度分段涂装工场的设计,在满足泄爆要求的同时,尽可能降低涂装车间工程造价及运行费用.

As for the local sour-and-fill problem around pier-type water intakes in the water supply and drainage project of large-scale coastal power plant,the theoretical formula of sour-and-fill intensity is gained for a single water intake,according to the potential theory and seabed change formula under cylindrical coordinate system.In addition,finite difference method is used to disperse seabed change formula under Cartesian coordinate system.The convenient sour-and-fill numerical simulation method is put forward too.The water intakes of sea water cooling system in some project are taken as an example.The theoretical formula and numerical model are applied to estimate the sediment accumulation around water intakes and better effect is obtained,which is a great assistance to layout the design elevation of water intakes and the sour-and-fill protective measures.

This paper describes the main patterns of dock's filling in China,and analyzes the principles and design concepts of siphon interception and valve interception of short-tunnel filling system.

Bidirectional tunnel is a new kind of hydraulic structure applied to a drainage pump station which is used by two coordinate docks.Considering the traditional unilateral tunnel and through hydraulic model experiment,we found out a configuration in the form of bidirectional tunnel and hyperbola commutate clapboard,helping to drink steadily and efficiently from one side of bidirectional tunnel to the primary pump.