Structures of large and long-term, in which the size depends on the slope of the stream and the soil and climate of the region. His installation also depends on the hydro-geology and topography and location of financial capital for its construction. The distance between two dikes, means are set, and is calculated by the slope of the bed, and the need to submit the site for its structure. It consists of an amount of vestment, a vestment of downstream foundation, crest and wings. This technique is consolidated with techniques of correction of slopes, as barriers, such as live barriers, banquets, afforestation, and others, increasing your time of life.
The purpose of their construction is to reduce the slope of the rivers and protect the bed, reducing the kinetic energy of flood water. The promotion of agricultural production is also one of its objectives, therefore retains sediment dragged the slopes, creating new agricultural areas. Contributes to the power of water, because it facilitates the infiltration with the decrease of velocity of flow. The implementation of the dam requires several previous studies with regard to its location, safety, design and budget. The activities of this technique, the most demanding in terms of knowledge and more expensive. After this stage do not require maintenance in the infrastructure, activities can occur in soil and water conservation within the basin. The technique is carried out in regions of sub-humid, arid and semi-arid, throughout the basin, regardless of local customs and the land next focus. The land recovered by this technique are mainly agricultural use. The construction of infrastructure USA the labor fronts of high-intensity or the local associations that can show. The most direct beneficiary of this technique, the use of agricultural areas caused, the owner is close to infrastructure. In some cases the ownership of land creates conflict among users of neighboring land.
ទីតាំង: S.Lourenço; Picos; St Cruz; S. Domingos, Ribeira Seca, ប្រទេសកាប់វែរ
ចំនួនទីកន្លែងបច្ចេកទេស ដែលវិភាគ:
ការសាយភាយនៃបច្ចេកទេស: ត្រូវបានផ្សព្វផ្សាយត្រឹមតំបន់មួយ (71.5 km²)
តើស្ថិតក្នុងតំបន់ការពារអចិន្ត្រៃយ៍?:
កាលបរិច្ឆេទនៃការអនុវត្ត: 10-50 ឆ្នាំ
ប្រភេទនៃការណែនាំឱ្យអនុវត្តន៍៖
The construction of a dam can provide increased income for owners benefit, and thus improving their welfare.