Site plan showing survey area (Kulim Hi

Site plan showing survey area (Kulim Hi

Site plan showing survey area (Kulim Hi-Tech Park, Kedah)
Survey Objective
 To determine the general thickness of the overburden and the
rippability characteristics of the underlying sediments.
 Method used seismic refraction survey.
Equipment used
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Seismic Survey
1 unit 24 channels BISON DIFP seismograph
24 unit 14-Hertz geophones
2 sets 12 take out geophone cables
Hammer switch
Shot cables
16 pounds sledge hammer
Control Survey
1 unit theodolite
Prisms, tripod and accessories
Geology of Survey Area
Seismic refraction survey
Grey shale and chert of Sungai Patani Formation. This rock can be
broken with a few firm hammer blows.
Arrangement of geophones and shot points
Shot S2 (16 lbs Hammer)
Schematic of seismic refraction survey
Example of seismogram, first arrival picking
and corresponding travel time curve (Rayfract)
PROJECT : SEISMIC REFRACTION SURVEY AT AREA A21 & A22 KULIM HITECH PARK, FASA III
KULIM, KEDAH DARUL AMAN.
CLIENT: : UZAIMIN ENTERPRISE (ALOR SETAR) SDN. BHD.
SEISMIC SECTION
LINE 1
80
70
ELEVATION (m)
900 m/s
(rippable)
900 m/s
(rippable)
G24
G1
60
1200 m/s
MODERATELY WEATHERED SHALE
(rippable)
1200 m/s
2000 m/s
2000 m/s
2000 m/s
50
1200 m/s
VARIEGATED SHALE BEDROCK
(rippable)
40
30
0
SCALE = 1: 500
10
20
30
40
50
60
70
DISTANCE (m)
G1
Geophone Location
SYARIKAT UJITANAH SDN. BHD.
Velocity, thickness, rock type,
colors
80
90
100
Tomogram Scale
110
120
Seismic Rippability Chart (Caterpillar)
D9G- No. 9 Ripper
Seismic Wave Velocity (m/s)
0
500
1000
1500
2000
2500
3000
Topsoil
Clay
Glacial Till
IGNEOUS ROCKS
Granite
Basalt
Trap Rock
SEDIMENTARY ROCKS
Shale
Sandstone
Siltstone
Claystone
Conglomerate
Breccia
Caliche
Limestone
METAMORPHIC ROCKS
Schist
Slate
MINERALS & ORES
Coal
Iron Ore
RIPPABLE
MARGINAL
NON RIPPABLE
3500
4000
4500
5000