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我国兴修坝工历史悠久，但规模小，建国后，随着社会政治的稳定、国民经济的发展和科学技术的进步，水利事业得到了空前发展，迄今修建的大坝多达８４０００座，水电总装机容量已达４９０３ＫＷ。文章介绍了自５０年代以来中个时期兴建的各种类型、不同规模的水利枢纽工程，并阐述了其中一些中大型工程建设中出现的复杂技术难题，以及取得的可贵经验；同时还介绍了不同形式的水电站厂房和水轮发电机组的规模和布置情况，因时因地制宜 相似文献
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V. N. Durcheva 《Power Technology and Engineering (formerly Hydrotechnical Construction)》1993,27(7):391-395
| 1. | Geodynamic movements of surrounding rock masses can affect the behavior of arch dams. Creep movements of slopes can cause a change in the former scheme of static behavior of a dam, being expressed in a different reaction to the previous combination of acting loads. |
| 2. | The effect of seismotectonic activity during the earthquake precursory period is manifested in the form of fluctuations of the on-site data: strain-gauge, geodetic, and piezometric. The location of the detector that recorded fluctuations and values of these fluctuations characterize the temporal change in the scheme of static behavior of the dam reacting to deformation of the blocks and slabs of the surrounding masses. |
| 3. | For concrete dams constructed in narrow mountain canyons, it is necessary to conduct on-site observations according to a special program compiled on the basis of an analysis of the state of the dam in the first years of operation to detect geodynamic and seismotectonic activity. These observations should be informative for: Determination of the effect of the surrounding rock masses on the state of the dam; study of the role of technogenic factors in natural processes; selection of earthquake precursors; determination of the seismic stability of the dam. |
| 4. | On all dams constructed in mountain canyons it is necessary to make a retrospective analysis of the on-site data to determine the interrelations in the reservoir-dam-surrounding rock mass system. |
| 5. | The data of on-site observations of the responses of a dam to geodynamic and seismotectonic processes can be used by basic science for gaining knowledge about the earth's crust. |
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É. G. Gaziev V. I. Rechitskii 《Power Technology and Engineering (formerly Hydrotechnical Construction)》1982,16(1):30-36
Conclusion The proposed methods of calculating and analyzing the stability of rock slopes make it possible to obtain reliable results with consideration of the possible character of failure and degree of reliability of the initial information. These methods were widely used in practical calculations of the stability of rock masses and slopes when planning stabilization measures in the reservoirs of the Tolorossy and Zaramag dams (Armenian branch of Gidroproekt), Akhuryan dam (Armenian State Institute for the Design of Water-Management Structures), when investigating and designing the lock of the Dnepr-2 hydroelectric station (Ukrainian branch of Gidroproekt), and when investigating and designing the Middle Enisei hydrostation, Khudofera hydrodevelopment, Konstantinovka hydrostation and Tashlyk pumped-storage station, Southern Ukraine power complex, etc.Translated from Gidrotekhnicheskoe Stroitel'stvo, No. 1, pp. 26–29, January, 1982. 相似文献
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隧洞掘进机TBM已逐渐成为水工深埋长隧洞的常规施工方法,而现行规范的围岩分类主要以隧洞围岩稳定性和支护措施为判别因素,仅适用于钻爆法隧洞。为此,梳理国内外不同工程的围岩分类指标体系和TBM施工特点,在隧洞围岩基本分类的基础上,重点分析了TBM掘进效率和不良地质条件,构建了TBM施工适宜性围岩分类方法。总结大量工程案例,综合权衡超硬岩、岩爆、断层破碎带、大变形、突涌水(涌泥)和高外水压力六个关键因素对TBM施工的定量影响,提出了可量化围岩分类指标。工程应用表明,TBM施工适宜性围岩分类方法可依据工程地质资料快捷完成围岩分类,能有效指导TBM隧洞施工,且具有较好的通用性和易用性。 相似文献
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介绍了新疆沙井子灌区的基本情况,分析了该灌区水工混凝土的裂缝种类及其出现的原因,论述了水工混凝土施工过程中应采取的预防措施和出现裂缝后应采取的处理措施。 相似文献
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