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1.
徕卡多功能全站仪断面测量软件系统摒弃了传统断面仪外业测量时的繁琐配置和定位缺陷.减少了外生设备和作业人员编制数量.实现了断面测量野外数据采集软件控制、自动采集等功能.从而达到隧洞断面测量自动化、数字化、计算机化,银证了测量成果的准确性、高效率性.减轻了测量人员的劳动强度。  相似文献   

2.
介绍了安康水电站排沙洞电站计算机监控系统的结构和配置及其特点,阐述了为了提高计算机监控系统.-j-~性在系统结构、硬件选择、电源配置等方面的设计优化方案。  相似文献   

3.
水厂投药自动控制系统探讨   总被引:4,自引:0,他引:4  
本文介绍了净水工艺中,用SCD及浊度仪等自动化仪表组成的投药控制系统.对简单调节、串级调节、前馈反馈等控制系统作了较详细的分析和比较.  相似文献   

4.
澳大利亚地下水水权的类型,主要有保有水量配置、取水量配置和取水许可等,通过对地下水水权转换的几种形式及行政管理程序的介绍.提出了开展地下水水权交易的问题和对策。  相似文献   

5.
着重讨论和介绍了SY250-2.5型三轴仪中体变测量和孔压测量的实施。  相似文献   

6.
三轴体变,孔压测量技术探讨   总被引:2,自引:0,他引:2  
着重讨论和介绍了SY250-2.5型三轴仪中体变测量和孔压测量的实施。  相似文献   

7.
在对DTC 158共振柱仪进行技术改进时,将配置Vib'SYS数据采集系统的微型计算机与DTC 158共振柱仪连接,实现对共振柱试验数据的自动采集、记录、计算和处理。文中介绍了共振柱试验的基本原理和改进后仪器的特点,并结合工程研究项目,在DTC 158共振柱仪上进行土的动剪模量比和阻尼比随动剪应变变化试验。通过实际工程应用表明,经过技术改进后的DTC 158共振柱仪的控制及测量性能提高一个数量级。Vib'SYS数据采集系统用于DTC 158共振柱仪,进行土的动力变形特性试验,提高了DTC 158共振柱试验的自动化程度、精度和工作效率。  相似文献   

8.
现有的转子类流速仪及其附属设备的技术指标,主要是为满足和适应江河大尺度水测量要求设计的,而用于中小型渠道的灌区和城市污水排放的水测量,还存在种种不足。该文作者研制开发了CS-3型多功能流速流量仪及测水量水管理软件,就其研发的技术背景、软硬件配置、技术特点以及应用概况等进行了介绍。  相似文献   

9.
岩体倾斜变位的观测精度与观测设施测斜导管的质量密切相关.测管在制造和安装过程中会产生一定的扭角,如何测量和校正误差,本文介绍了一种新仪器──导管测扭仪.仪器由探头、电缆、电缆绞车、二次仪表组成.基本原理是利用磁通门测量地磁场强的方法来实现定向的目的.探头内两个相互正交的磁通门,可同时测出两个正交的水平地磁分量(Ⅰ和Ⅱ),利用公式tga=Ⅰ/Ⅱ计算出方业角a.此外文章还介绍了导管测扭仪的精度、现场应用等,同时总结了测扭规律,指出了我国较为广泛应用的国产测斜管存在的问题,以及测扭的迫切性和必要性.  相似文献   

10.
介绍了江西万安水力发电厂对机组振动摆度实现实时在线监测的配置、BZJ—1A型摆度振动监测仪的主要功能和特点,以及该振动仪在万安水力发电厂的现场使用情况。3年多来仪器运行正常,对机组的故障作出了正确的判断,为实现水电厂“无人值班”(少人值守)奠定了坚实的基础。  相似文献   

11.
帷幕灌浆试验是帷幕灌浆施工的重要依据,文中结合双乳山左岸帷幕灌浆试验,介绍了灌浆试验的施工方法,通过10个灌浆孔的透水率、单位注入量和1个检查孔的压水试验对灌浆试验结果进行了分析.  相似文献   

12.
积极推广先进的灌溉制度,发展节水工程先进技术,可以扩大工程效益,提高每m^3水的生产效率,解决水资源紧缺与浪费的严重威胁,所以发展节水灌溉有极其深远意义。  相似文献   

13.
周晖 《大坝与安全》2005,(3):46-47,61
本文对应变计的安装埋设方法进行简介,并对对河口水库大坝某槽段混凝土应变计施工期的观测资料进行初步计算分析,为分析评价施工及安全监测提供依据。  相似文献   

14.
The objective of this study was to determine the quantitative goals for a large-scale fog collection project if it were to be an economically competitive source of freshwater in northern Chile. When the initial costs are factored in, the cost of water from such a project would exceed the market price of the alternatives. However, given current costs, the project could be profitable given an average collection rate of about 10 litres per day per square metre. Investment in site selection and system improvements to reduce costs and improve collection rates are essential for making large-scale fog collection an economically competitive source of freshwater.  相似文献   

15.
引黄工程总干线一、二级泵站串联运行,设计布置D=12.0m的进、出水调压井于一级泵站进、出口,二级泵站进口,在一、二级泵站之间的4^#有压隧洞上设置水工建筑物作为水锤防护主要措施,通过系统水力过渡过程计算分析,验证了建筑物设计的合理性。  相似文献   

16.
17.
An intensive monitoring program of a standard two-stage dairy shed waste stabilisation pond system was undertaken to determine the incidence and extent of spatial and temporal variation of basic physio-chemical parameters, and to shed light on the longer term dynamic nature of in-pond conditions. The anaerobic-facultative pond system, located in a remote rural area, treats wastewater from the hosing down and hydraulic flushing of the milking parlour and holding yard at the farm dairy shed. A number of multi-parameter water quality field monitoring probes were permanently deployed at various locations within the two ponds to enable continuous measurement of temperature, pH, conductivity and dissolved oxygen. In addition, profiling of the supernatant of both ponds was undertaken at different times of the year to examine vertical variation of the same parameters. Continuous monitoring revealed spatial homogeneity in EC and pH levels in the upper metre of both ponds. Physio-chemical parameters also appear to change uniformly across the ponds in response to external stimuli such as rainfall. Neither pond, however, exhibits homogeneity down the profile of the supernatant. Seasonal stratification is prevalent in the facultative pond suggesting poor vertical mixing, while the anaerobic pond is notably affected by sludge accumulation. A long-term pattern of rising conductivity in both ponds indicated accumulation of dissolved salt species in the system due to recirculation of reclaimed effluent for hydraulic flushing of the dairy shed. In the facultative pond, diurnal fluctuations in dissolved oxygen, oxidation-reduction potential and turbidity during warmer months of the year closely followed temperature swings. The extensive data collected in this study provides a detailed picture of the physio-chemical dynamics of two-stage stabilisation pond systems treating dairy shed wastewater.  相似文献   

18.
An excess of 31 million m3/y of tertiary-treated wastewater is expected in Muscat, Oman, by 2015. This paper addresses the technical and cost estimation of managed aquifer recharge after reverse-osmosis treatment. The results indicate that the project is appealing from an economic perspective. The total cost varies between USD 0.353 and USD 0.550 per cubic metre, depending on the cost of electricity, the interest rate and the life span of the project. The project may face rejection from domestic users, who may be unwilling to accept mixing treated wastewater with the current water supply due to health risks. An alternative to indirect potable reuse is the installation of a separate network to service industrial users.  相似文献   

19.
黄河调水调沙试验对下游河道行洪规律的影响   总被引:3,自引:1,他引:2  
山东省东明县高村河段在黄河下游河道具有一定的代表性.20世纪90年代,由于黄河下游持续小水高沙,低水期延长,主槽发生严重的淤积,河道行洪能力明显下降.2002年以来,黄河水利委员会通过小浪底水库进行了三次调水调沙试验,使该河段主河槽泥沙得到有效的冲刷,仅2003年5月至12月,山东河道(高村至汊2)主槽冲刷就达11756万m3,冲刷厚度0.23m,行洪能力得到大大提高.  相似文献   

20.
三峡船闸地质力学模型结构稳定研究   总被引:2,自引:0,他引:2  
 本文阐述采用地质力学模型研究三峡船闸的稳定问题。其中包括用二维平面地质力学模型研究在自重和地应力作用下,双线船闸的开挖对于船闸边坡稳定的影响,及用三维地质力学模型研究在最不利的运行工况:自重、水压力、门推力作用下,双线船闸中隔墩的稳定;特别验证了60m中隔墩的稳定,为优化设计提供了依据。 本文还简单叙述了地质力学模型的特点,它的关键技术、及本课题的社会、经济效益。  相似文献   

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