MEKANIKA TANAH I PERTEMUAN 1 PENDAHULUAN Oleh Arwan

MEKANIKA TANAH I PERTEMUAN 1 PENDAHULUAN Oleh : Arwan Apriyono PROGRAM STUDI TEKNIK SIPIL JURUSAN TEKNIK FAKULTAS SAINS DAN TEKNIK UNSOED TAHUN 2011

INTRODUCTION Air Tanah Permeabilitas Tanah Seepage/Rembesan Tegangan Efektif

INTRODUCTION

INTRODUCTION

INTRODUCTION

INTRODUCTION

INTRODUCTION What is permeability? A measure of how easily a fluid (e. g. , water) can pass through a porous medium (e. g. , soils) water Loose soil Dense soil - easy to flow - difficult to flow - high permeability - low permeability 7

INTRODUCTION What is deference between Porosity and Permeability? Illustration of pore and pore channels in a rock. These two figures have the same porosity (same pore space). In the figure to the right the pore channels are closed and the permeability is zero. 8

INTRODUCTION

INTRODUCTION Flow increasing. Dozers sent to fill hole at El. 5200. About 10. 45 AM June 5, 1976.

INTRODUCTION Early afternoon June 5, 1976

INTRODUCTION Late afternoon June 5, 1976.

INTRODUCTION BAHAN KULIAH SETELAH MID TEST: Pertemuan 1 1. Pendahuluan & Air Tanah 2. Permeabilitas Tanah Ø Garis Aliran Ø Hukum Darcy Ø Uji permeabilitas di laboratorium Ø Uji permeabilitas di lapangan 3. Seepage/Rembesan : Ø Flow Net Ø Seepage Ø Tekanan Rembesan Ø Keamanan thd Piping 4. Tegangan Efektif Pertemuan 2 Pertemuan 3 Pertemuan 4 Pertemuan 5 Pertemuan 6