TY  - GEN
CY  - UNIVERSITAS LAMPUNG
ID  - eprints24054
UR  - http://digilib.unila.ac.id/24054/
A1  - MEZRIN ROMOSI, 1115051024
Y1  - 2016/08/23/
N2  - Telah dilakukan penelitian mengenai gerakan tanah menggunakan metode geolistrik tahanan jenis, MASW, dan data mekanika tanah di Desa Cimuncang Kec. Malausma Kab. Majalengka. Penelitian ini bertujuan untuk mengetahui nilai distribusi tahanan jenis dan distribusi kecepatan gelombang geser VS30, untuk menentukan dan menganalisis pola perlapisan batuan, kedalaman bidang gelincir  melalui pemodelan 2D dan 3D serta menganalisis nilai faktor keamanan lereng berdasarkan uji mekanika tanah. Berdasarkan pemodelan geolistrik diperoleh nilai distribusi tahanan jenis yaitu 6-200 ?m dimana kedalaman bidang gelincir 5-7 m. Berdasarkan pemodelan MASW diperoleh nilai distribusi kecepatan gelombang S 40-500 m/s dimana kedalaman bidang gelincir sekitar 5 m. Lapisan yang menjadi bidang gelincir berdasarkan pemodelan geolistrik yaitu kontak antara lapisan lempung (<25 ?m) dengan lapisan tufa (25-75 ?m), sedangkan berdasarkan pemodelan MASW lapisan yang dianggap bidang gelincir yaitu antara lapisan tanah lunak (VS <183 m/s) dan lapisan tanah kaku (VS 183-366 m/s). Berdasarkan pemodelan Geoslope diperoleh nilai Faktor Keamanan (FK) lereng sebesar 1,26 di sebelah tenggara yang berarti lereng tersebut relatif stabil dan di baratlaut sebesar 0,98 yang berarti lereng tersebut labil.

Kata kunci:  bidang gelincir, tahanan jenis, gelombang geser, faktor keamanan (FK) lereng

SLIP AREA PREDICTION USING RESISTIVITY METHOD, MASW, AND SOIL MECHANICAL DATA IN CIMUNCANG, MALAUSMA, MAJALENGKA

The research of soil movement has been conducted using resistivity method, MASW, and soil mechanical data in Cimuncang, Malausma, Majalengka. The research has done in order to know resistivity distribution value and shear wave velocity VS30, to determine and analyzing rock layers pattern, slip area depth through 2D and 3D modelling result, and analyzing slope Safety Factor (SF) based on soil mechanical laboratory testing. The estimation of resistivity value is done by applying resistivity modelling, the value is vary from 6-200 ?m which the depth of slip area is 5-7 m. The estimation of shear wave velocity value is done by applying MASW modelling, the value is vary from 40-500 m/s which depth of slip area is about 5 m. The layer that used as slip area based on resistivity modelling is contact between clay (<25 ?m) and tuff (25-75 ?m), and based on MASW modelling that considered as slip area is between soft soil layer (VS <183 m/s) and stiff soil layer (VS 183-366 m/s). Based on Geoslope modelling gained slope Safety Factor (SF) is valued 1,26 in southeast that means the slope is relatively stable and in northwest is valued 0,98 that means the slope is unstable area.

Keywords: Slip Area, Resistivity, Shear Wave, Slope Safety Factor (SF)

PB  - FAKULTAS TEKNIK
TI  - PENDUGAAN BIDANG GELINCIR MENGGUNAKAN METODE GEOLISTRIK TAHANAN JENIS, MASW, DAN DATA MEKANIKA TANAH DI DESA CIMUNCANG KEC. MALAUSMA 
KAB. MAJALENGKA

AV  - restricted
ER  -