scholarly journals Comparative study on dam site selection in the pre-feasibility stage of Shitouzhai Hydropower Station

2021 ◽  
Vol 233 ◽  
pp. 03044
Author(s):  
Pan Shaohong ◽  
Zhang Hongpin

The selection of dam site is the key content in the early stage of hydropower station project. Based on the hydrology, topographic and geological conditions, kinetic energy economic indexes, flood loss of reservoir, project layout, electromechanical and metal structure, construction conditions and project investment of the proposed dam site, this paper makes an in-depth analysis of the dam site selection in the pre-feasibility stage of Shitouzhai Hydropower Station, in order to provide beneficial inspiration for the design of similar projects.

2013 ◽  
Vol 13 (3) ◽  
pp. 606-614
Author(s):  
Masoomeh Alaibakhsh ◽  
Sh. Haji Azizi ◽  
M. M. Kheirkhah Zarkesh

Subsurface dams and aqueducts have been used for many years as important sources of water in different parts of the world. Nowadays, little attention is paid to aqueducts. On the other hand, there is a great tendency for constructing and using subsurface dams in many arid and semiarid parts of the world such as Iran. A combination of these two structures was established in ancient Iran including Qanat Vazvan in Isfahan. Nowadays, new methods and techniques such as the Geographic Information System and Remote Sensing have been developed to process site selection of subsurface dams with high accuracy and in a short time. Study and research of the Qanat Vazvan structure emphasizes the idea that these two structures have been combined in a new way. Considering some main criteria and sub-criteria for subsurface dam site selection, with the existence of aqueduct, some suitable locations with a combination of aqueduct and subsurface dam in Pishkoh basin, Taft, Yazd province have been delineated. Some of the advantages of underground dams are their local use, being close to the demand sites and their capacity for gathering water in each season. These positive points when combined with reclamation of aqueducts (qanats) cause a renewable situation for qanats and their efficiency as a water resource management process. Underground dams can be built in a qanat's shaft by constructing some hatches inside the dam's wall. Hence, water can be stored during cold rainy seasons. The main and basic weaknesses of qanats can be covered through this combination. Hence, it causes a strong and optimum usage of qanat water.


2014 ◽  
Vol 1065-1069 ◽  
pp. 580-585
Author(s):  
Hua Kang Zheng ◽  
Ming Ming Liu ◽  
Wen Jia Tang ◽  
Ru Zhen Meng

Located at a narrow and deeply-cut valley in the middle reach of Yalong River in Southwestern China, the Kala Hydropower Station is subjected to serious seepage and leakage problems due to complex geological conditions at the dam site. A numerical method combining a substructure technique, a variational inequality formulation of Signorini’s type and an adaptive penalized Heaviside function (short for SVA method) was adopted for the simulation and assessment of seepage control effects at the dam site in Kala Hydropower Project. Numerical modeling of a typical overflow dam section and the whole dam site demonstrated that the primary design was a proper scheme for seepage control, and furthermore, optimization of the seepage control system can be performed in designing the layout.


Mathematics ◽  
2020 ◽  
Vol 8 (2) ◽  
pp. 252 ◽  
Author(s):  
Heng-ming Peng ◽  
Xiao-kang Wang ◽  
Tie-li Wang ◽  
Ya-hua Liu ◽  
Jian-qiang Wang

To promote the development of nuclear power project in inland China, a specialized multi-criteria decision support framework is constructed for the site selection of inland nuclear power plants in this work. The best worst method (BWM), decision-making trial and evaluation laboratory (DEMATEL), and technique for order performance by similarity to ideal solution (TOPSIS) are integrated with Z-numbers, namely Z-BWM, Z-DEMATEL, and Z-TOPSIS. Z-BWM and Z-DEMATEL are combined to produce the weights of criteria, and an extended Z-TOPSIS is utilized to determine the ranking of all alternatives. Finally, a case study is performed in Hunan province to demonstrate the practicability of the proposed decision support framework. The robustness and feasibility of the proposed method are shown by an in-depth analysis of the decision results.


2018 ◽  
Vol 6 (2) ◽  
pp. 64-67
Author(s):  
Lalhming liana ◽  
◽  
Ch. Udaya Bhaskara Rao ◽  
Goutam Saha ◽  
◽  
...  

Dam site selection is an important task in water resource management and it depends on a number of biophysical as well as socio-economic factors. Dam site selection is becoming important research area due to the increase of water scarcity and also to prevent flood in certain area. This paper presents Multi Criteria Decision Making (MCDM) approach in water resources management through the integration of Analytic Hierarchy Process (AHP) and Technique for Order of Preference by Similarity to Ideal Solution (TOPSIS). These methods were applied for identification of suitable dam site in Tlawng sub-basin. The influential criteria for dam site selection were initially identified through literature review and experts opinion which was followed by the selection of four (4) feasible sites after having studied Tlawng watershed. Lastly, AHP and TOPSIS were applied to determine the relative weight and rank respectively.


2020 ◽  
pp. 123-150
Author(s):  
Julia Saviello

Smell and taste – of the five senses these are the two most strongly stimulated by smoking tobacco. The article presents an in-depth analysis of the reflection of both these forms of sensory perception in textual and visual sources concerning the early consumption of the herb. In a first step, tobacco’s changing reception, first as medicine and then as stimulant, is traced through the years of its increasing distribution in Europe, starting in the middle of the 16th century. As this overview reveals, at that time the still little known substance gave rise to new forms of sense perception. Following recent studies on smell and gustation, which have stressed the need to take into account the interactions between these senses, the article probes the manifold stimulation of the senses by tobacco with reference to allegorical representations and genre scenes addressing the five senses. The smoking of tobacco was thematized in both of these art forms as a means of visualizing either smell or taste. Yet, these depictions show no indication of any deliberate engagement with the exchange of sense data between mouth and nose. The question posed at the end of this paper is whether this holds true also for early smoker’s still lifes. In the so-called toebakjes or rookertjes, a subgenre of stilllife painting that, like tobacco, was still a novelty at the beginning of the 17th century, various smoking paraphernalia – such as rolled or cut tobacco, pipes and tins – are arrayed with various kinds of foods and drinks. Finally, the article addresses a selection of such smoker’s still lifes, using the toebakje by Pieter Claesz., probably the first of its kind, as a starting point and the work by Georg Flegel as a comparative example. Through their selection of objects, both offer a complex image of how tobacco engages different senses.


1991 ◽  
Vol 24 (12) ◽  
pp. 83-91
Author(s):  
D. C. P. Casarini ◽  
E. Gloeden ◽  
R. C. de A. Cunha

Land treatment is defined as the hazardous waste management technology related to application and incorporation of waste into the defined treatment zone of the soil where will occur the degradation, transformation and immobilization of the constituents contained in the applied waste, to ensure protection of surface water and groundwater. This paper describes some criteria for site selection of land treatment facilities used by petroleum refineries, as well as the engineering design, management practices to optimize the process and closure and post-closure techniques.


2021 ◽  
Vol 54 (3) ◽  
pp. 1-36
Author(s):  
Syed Wasif Abbas Hamdani ◽  
Haider Abbas ◽  
Abdul Rehman Janjua ◽  
Waleed Bin Shahid ◽  
Muhammad Faisal Amjad ◽  
...  

Cyber threats have been growing tremendously in recent years. There are significant advancements in the threat space that have led towards an essential need for the strengthening of digital infrastructure security. Better security can be achieved by fine-tuning system parameters to the best and optimized security levels. For the protection of infrastructure and information systems, several guidelines have been provided by well-known organizations in the form of cybersecurity standards. Since security vulnerabilities incur a very high degree of financial, reputational, informational, and organizational security compromise, it is imperative that a baseline for standard compliance be established. The selection of security standards and extracting requirements from those standards in an organizational context is a tedious task. This article presents a detailed literature review, a comprehensive analysis of various cybersecurity standards, and statistics of cyber-attacks related to operating systems (OS). In addition to that, an explicit comparison between the frameworks, tools, and software available for OS compliance testing is provided. An in-depth analysis of the most common software solutions ensuring compliance with certain cybersecurity standards is also presented. Finally, based on the cybersecurity standards under consideration, a comprehensive set of minimum requirements is proposed for OS hardening and a few open research challenges are discussed.


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