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Dam projects slow slow water (Check weir water
Dam) by the Royal theory development and restoration of forests
.The weir, though, is the name of project works about engineering, traditional Miao is a slow water weir weir semi permanent one type. Weir type pigs using materials readily available locally, such as twigs, stones.Water or small flow down and locked in the area long enough to areas around will absorb to use. A restoration of degraded forest area to moisture enough to development. Forest completely up.To a high level enough to pull the water used in the canal in the dry season. The project works this is a trial project, Huai Hong khrai.)Chiang Mai and successful so as to other projects later
.Fai slow water created in the way flow of water on small streams, to slow the flow - to reduce the severity of stream water, reduce the erosion of the riverbank - when the water flow down. It has water in the Creek for a long time, especially in the dry season.Reduce the shallow downstream, water quality is good - help the soil moist forests are plenty, increasing biological diversity - wildlife. Aquatic living water to live. Back to the hills / bald mountain plant - soil moisture.A forest fire line reduces the severity of the fire!
To maintain the moisture of forest and water retention, the project was implemented. Weir slow water in the water stream. 2 lines and to build understanding and correct. For project Fai slow water that we set up it was.In order to reduce the impact on the ecology in the long run, as follows:
.1.We built a weir weir is not permanent, natural materials, primarily for slow water in the dry season, but was not built to retain water. The flow of water at the upstream face, there is water. All the time, whether it permeate through the FAI.2. The height of the dam, not very high altitude, about 40% of the height of the highest water level in the creek or stream. The water can overflow through the weir. All the time, to keep the ecosystem, upstream face it!3. The weir should have the slope for about 20 - 4 5 degrees, both front and back, no ควรสร้าง dam with face cut. 9. Degrees
4.Construction will create a. Step periodic phase depends on the area. About 50 - 200 meters. 4. The construction budget, we almost none. Just let's take stone to yuusuke Baraka is along the canal to rearrange.If no stone. We'll use sandbag
.5. If the water front, water weir would crumble to reduce the speed of the flash flood (down) the stone ี่ก่อ one by one, will be broken, and flow down to the business. Below the next
6.At the end of the face flash flood water is on the verge of dry, we find the time to exercise my stone back to sort a slow water weir, as (in most cases. Will remain the original structure. Some) takes construction about 1-2 hours only weir
7.Should consider, aquatic, living in a canal that can travel to the river? Because we intend that "in the water to fish in the forest must have water.
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