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ITS » Undergraduate Theses » Fisika
Posted by ida at 20/11/2009 18:28:47  •  6184 Views


PENYELIDIKAN GEOLISTRIK UNTUK IDENTIFIKASI STRUKTUR BAWAH PERMUKAAN AREA KELONGSORAN RUAS JALAN PONCO BOJONEGOROJATIROGO TUBAN

INVESTIGATION OF GEOELECTRICITY TO IDENTIFY STRUCTURE SUBSURFACE SLIDE OF AREA PART OF ROADWAY PONCO BOJONEGORO-JATIROGO TUBAN

Author :
Wineko, Febi ( 1100100042 )




ABSTRAK

Penurunan badan jalan di ruas jalan Ponco-Jatirogo Link 032 KM.125700 merupakan peristiwa perubahan kondisi struktur bawah permukaan. Peristiwa ini telah disikapi dengan dilakukan penyelidikan struktur bawah permukaan perkerasan jalan raya menggunakan metoda geolistrik tahanan jenis Konfigurasi Wenner dengan tiga lintasan pengukuran. Pemodelan menggunakan Res2dinv untuk memperoleh kontur tahanan jenis struktur bawah permukaan. Interpretasi geofisika dengan didukung interpretasi hidrogeologi dan geoteknik dapat menghasilkan identifikasi penyebab terjadinya penurunan badan jalan. Dari penelitian diperoleh harga tahanan jenis antara 1-100 Ohm.m dan 039-402 Ohm.m yang menerangkan jenis lapisan berupa lempung dan air tanah yang berasosiasi. Intrusi air tanah pada lapisan lempung berasal dari kedalaman 10 m mencapai 5 m pada lintasan 1 dan 3 m pada lintasan 2 dan 3. Peningkatan debit air tanah pada daerah hidrogeologi pantura dan perlakuan geoteknis pada konstruksi perkerasan jalan raya yang tidak peka terhadap perubahan iklim adalah sebagai penyebab terjadinya penurunan badan jalan.


ABSTRACT

Depression of body roadway in part of Ponco-Jatirogo Link 032 KM.125700 is represent event of change condition of subsurface structure. This event have done by investigation of subsurface structure of roadway haedness use one of gephysics method with three measurement lines. The modeling used Res2dinv to obtain resistivity contour of subsurface structure. Geophysics interpretation is supported by hydrogeology and geotechnic of body roadway. From research is obtained velue of resistivity among 1-100 Ohm.m and 039-402 Ohm.m that explained type of layer in the form of clay and gorund water which have association. Intrusion of ground water at layer of clay come from deepness 10 m until 5 m at line 1 and 3m at line 2 and 3. Increase of ground water charge at hydrogeology of north beach area and treatment of geotechnic at construction of roadway hardness which is not sensitive to change of climate is as cause of the happening of depression of body roadway.



KeywordsKonstruksi jalan, deformasi, geolistrik, hidrogeologi
 
Subject:  Geofisika
Contributor
  1. Widya utama, DEA
Date Create: 20/11/2009
Type: Text
Format: pdf
Language: Indonesian
Identifier: ITS-Undergraduate-3100007028985
Collection ID: 3100007028985
Call Number: RSFi 550 Win p


Source
Undergraduate Theses, DEPARTEMENT OF PHYSICS, RSFi 550 Win p

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