Kajian Efektivitas Kolam Retensi Lembah UGM Untuk Pengurangan Banjir Kali Belik
Flooding can occur due to runoff coefficient due to the increase in the Watershed and high rainfall in the watershed. In Belik watershed land use changes that result in the ability of land to absorb water discharge is reduced resulting in accumulation of runoff ( surface runoff ). Therefore, it is n...
Saved in:
| Main Authors: | , |
|---|---|
| 格式: | Theses and Dissertations NonPeerReviewed |
| 出版: |
[Yogyakarta] : Universitas Gadjah Mada
2014
|
| 主題: | |
| 在線閱讀: | https://repository.ugm.ac.id/127562/ http://etd.ugm.ac.id/index.php?mod=penelitian_detail&sub=PenelitianDetail&act=view&typ=html&buku_id=67823 |
| 標簽: |
添加標簽
沒有標簽, 成為第一個標記此記錄!
|
| 機構: | Universitas Gadjah Mada |
| 總結: | Flooding can occur due to runoff coefficient due to the increase in the
Watershed and high rainfall in the watershed. In Belik watershed land use changes
that result in the ability of land to absorb water discharge is reduced resulting in
accumulation of runoff ( surface runoff ). Therefore, it is necessary to research to
find out the retention pond discharge inlet basin and determine the level of
effectiveness of retention ponds and detention basin generated by the discharge
outlet to reduce the pool.
One of the way to manage the watershed is by draining the water surface
at a safe speed to the pools of water retention which in turn can be used again.
Retention pond is a pond that is designed with a specific shape and capacity at the
planned location. Retention ponds must be able to accommodate the incoming
water line with planned capacity so as to reduce the peak flood discharge. The
simulations has been performed by using HEC-HMS program.
The results showed that when the value of flood discharge for 5 year
anniversary of 12,8 m
3
/s, the outflow on the existing condition of 11,6 m
3
/s with
an effectiveness of 9,4%. Conditions of the plan without an outflow discharge
outlets have 11,3 m
3
/s and a shift in the start time of the flood the existing
condition of 15 minutes with an effectiveness of 11,7%, while the outflow
discharge with an outlet orifice of 11,2 m
3
/s and occurs shift of 30 minutes with
an effectiveness of 12,5%. |
|---|