A conceptual model of check dam hydraulics for gully control: efficiency, optimal spacing and relation with step-pools
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چکیده
منابع مشابه
A conceptual model of check dam hydraulics for gully control: efficiency, optimal spacing and relation with step-pools
There is little information in scientific literature regarding the modifications induced by check dam systems in flow regimes within restored gully reaches, despite it being a crucial issue for the design of gully restoration measures. Here, we develop a conceptual model to classify flow regimes in straight rectangular channels for initial and damfilling conditions as well as a method of estima...
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آب حاصل از بارش منبع تأمین نیازهای بی شمار جانداران به ویژه انسان است و هرگونه کاهش در کم و کیف آن مستقیماً حیات موجودات زنده را تحت تأثیر منفی قرار می دهد. نوسان سال به سال بارش از ویژگی های اساسی و بسیار مهم بارش های سالانه ایران محسوب می شود که آثار زیان بار آن در تمام عرصه های اقتصادی، اجتماعی و حتی سیاسی- امنیتی به نحوی منعکس می شود. چون میزان آب ناشی از بارش یکی از مولفه های اصلی برنامه ...
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deployable scissor type structures are composed of the so-called scissor-like elements (sles), which are connected to each other at an intermediate point through a pivotal connection and allow them to be folded into a compact bundle for storage or transport. several sles are connected to each other in order to form units with regular polygonal plan views. the sides and radii of the polygons are...
An empirical–conceptual gully evolution model for channelled sea cliffs
Article history: Incised coastal channels ar Received 22 February 2008 Received in revised form 21 April 2008 Accepted 23 April 2008 Available online 8 May 2008
متن کاملCheck dam suitable locations for erosion control using hierarchical analysis process
1- Introduction Watershed describes an area of land that contains a common set of streams and rivers, which all drain into a single large body of water. For sustainable management of watersheds, soil erosion is a major factor, which accelerates the rate of land degradation and hence influences agricultural productivity, run off movement and sometimes leads flood in the lower basin. Soil is one...
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ژورنال
عنوان ژورنال: Hydrology and Earth System Sciences
سال: 2014
ISSN: 1607-7938
DOI: 10.5194/hess-18-1705-2014