PENENTUAN KOEFISIEN PERMEABILITAS TANAH BERPASIR KONDISI JENUH DAN JENUH SEBAGIAN BERDASARKAN PENGEMBANGAN ALAT

• Main Authors: , ADHITYA YOGA PURNAMA, , Dr. Ir. Ahmad Rifaâ��i, M.T.
• 格式: Theses and Dissertations NonPeerReviewed
• 出版: [Yogyakarta] : Universitas Gadjah Mada 2014
• 主題: ETD
• 在線閱讀: https://repository.ugm.ac.id/132816/; http://etd.ugm.ac.id/index.php?mod=penelitian_detail&sub=PenelitianDetail&act=view&typ=html&buku_id=73359

The post-rain puddles problems that occurs in the yard of Prambanan Temple very disturbs visitor activity. A poodle layer an a drainage system has ever built to avoid such a problem, but puddles still didn�t stop appearing after rain. Hydraulic conductivity needs to be determined by using more practical prosedure to find exact method of solution. This experiment uses two kinds of prosedures which are immediate flow and constant discharge method. Immediate flow method used a tube poured with water and the time period after water level changes were being calculated. Constant discharge method used a tube poured with constant water flow. Both procedure were carried out from unsaturated until saturated soil condition.Volumetric water content (�) were being monitored by Decagon device. The result were relationship between k vs � which drawn by numerical approach VG model. Parameters �r are measured by testing or modeling. �r optimum value obtained from the test was at very dry soil. Hydraulic conductivity with a density of 1.98 gr/cm3 for unsaturated conditions is 3 x 10-6 cm/sec (Sr=68%) and 10-5 cm/sec (Sr=82%). Developed instruments were efficient to measure hydraulic conductivity from unsaturated to saturated condition without using Soil Water Characteristic Curve that quite expensive.