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Pengukuran Laju Pengendapan Dalam Penentuan Toleransi Penambangan Pasir Dan Batu [PAPER]

ABSTRAK DAS adalah wilayah kesatuan ekosistem dibatasi oleh topografi dan berfungsi sebagai compiler, dealer air bersama dengan unsur ...



ABSTRAK

DAS adalah wilayah kesatuan ekosistem dibatasi oleh topografi dan berfungsi sebagai compiler, dealer air bersama dengan unsur sedimen di sistem sungai. Daerah Aliran Sungai Luk Ulo luas 676 km2, Curah hujan di DAS hulu memiliki jangkauan dari 2.500 mm / tahun sampai 3250 mm / tahun, dan saham hilir DAS curah hujan kurang lebih 2.600 mm /tahun. Pada musim hujan debit dari Sungai Luk Ulo memuncak tajam dan ketika sangatkecil musim kemarau. Erosi, sedimentasi, banjir, ketersediaan air sangat berhubungandengan faktor fisik dan sosial-budaya. Luk Ulo DAS terletak di jawa tengah di mana mengalami degradasi lingkungan, sedimentasi sungai Luk Ulo dimanfaatkan dan menghasilkan ketidakseimbangan DAS. Indikasi kerusakan DAS Likely ditonton dari tingkat ketinggian sedimentasi dan erosi. Tujuan penelitian ini untuk menentukan pertambangan pasir, sehingga keseimbangan ketersediaan pasir dan maksimalpertambangan pasir (sirtu) dapat mengamati. Metode yang digunakan dalam penelitian iniadalah survei dan pengukuran sedimen, yaitu dengan asupan sampel airmempertimbangkan beban ditangguhkan dan juga pengukuran debit sungai setiap sub DAS. Parameter pengukuran sedimentasi adalah konsentrasi sedimen tersuspensi Cs (mg /l), debit Q (m3 / detik) dan keluarnya Qs sedimen tersuspensi (gr / detik). Metode yang digunakan dalam penelitian ini adalah survei dan pengukuran sedimentasi, yaitu dengan asupan sampel air mempertimbangkan beban ditangguhkan dan juga pengukuran debit sungai setiap sub DAS. Parameter pengukuran sedimentasi adalah konsentrasi sedimen tersuspensi Cs (mg / l), debit Q (m3 / detik) dan keluarnya Qs sedimen tersuspensi (gr /detik). Dari hasil penelitian dapat diketahui bahwa beban sedimen harian di Luk Ulo hulu wathersed di hujan Oktober-November sebesar 1.438,36 ton / hari, sedangkan beban sedimen dalam satu tahun sebesar 194,43 ton / Hektar / tahun.

Kata Kunci: Daerah Aliran Sungai, Lukulo, Sungai, Sedimentasi, Discharge, Pertambangan, pasir


ABSTRACT

Watershed is unity region of ecosystem limited by topographic and functioning as compiler, dealer of the water along with sediment element in river system. Luk Ulo Watershed broadly 676 km2,  Rainfall in upper stream watershed have range from 2500 mm/year until 3250 mm/year, and shares of downstream watershed rainfall more or less  2600 mm/year. At rain season discharge of Luk Ulo River is mounting sharply and very small when dry season. Erosion, sedimentation, floods, dan water availability relevant with physical and socio-culture factor. Luk Ulo Watershed located in central java in hichexperiencing of environmental degradation, the sedimentation of Luk Ulo river is exploited and resulting imbalance of  watershed. The Indication of Likely Watershed damage is watched from height level of sedimentation and erosion. This research target to determinemining of sands, so that balance of sands availability and   maximal mining’s of sands (sirtu) can be observe. Method which used in this research is survey and measurement of sediment, that is with intake of water sample considering load suspended and alsomeasurement of river discharge every sub watershed. Parameter for sedimentation measurement is concentration of suspended sediment Cs (mg/l), discharge Q (m3/detik)and discharge of suspended sediment Qs (gr/detik). Method which used in this research is survey and measurement of sedimentation, that is with intake of water sample considering load suspended and also measurement of river discharge every sub watershed. Parameter for sedimentation measurement is concentration of suspended sediment Cs (mg/l), discharge Q (m3/detik) and discharge of suspended sediment Qs (gr/detik). From the research result can know that daily sediment load in Luk Ulo upstream wathersed at the rains October - November equal to 1.438,36 ton/day, while sediment load in one yearequal to 194,43 ton/Hectare/year.

Key Words: Watershed, Lukulo, River, Sedimentation, Discharge, Mining, Sands


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RSGIS INDONESIA: Pengukuran Laju Pengendapan Dalam Penentuan Toleransi Penambangan Pasir Dan Batu [PAPER]
Pengukuran Laju Pengendapan Dalam Penentuan Toleransi Penambangan Pasir Dan Batu [PAPER]
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RSGIS INDONESIA
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https://www.rsgis.info/2019/10/pengukuran-laju-pengendapan-dalam-penentuan-toleransi-penambangan-pasir-dan-batu.html
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