Sk Sg. Siong Soil Test
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Transcript of Sk Sg. Siong Soil Test
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Resistivity 2-D Survey
School : SK Sg. SiongDistrict : SibuSurvey Date : 24 th and 25 th January 2010Prepared by : Kevin Carradine ak Atet and Mohd SazalyBasarianChecked by : 1. Mohd. Rizal Abd. Rashid
2. Khairul Rizzal Roslan
Figure 1. SK. Sg. Siong survey layout plan
Dininghall
Pumphouse
Quarters
Toilet
Football field
Classroom
Q u a r t e r s
Q u a r t e r s
Q u a r t e r s
ToiletWater tank
Tank 3
Tank 2
ExistingTubewell
Tank 1
C l a s s r o o m
S m
a l l r o c k y r o a d
School gate
School gate
0m
400m
0m400m
0m200m
0m 400m
0m
200m 0m
200m
Line 1
Line 2
Line 3
Line 4
Line 5
Line 6
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RESULT AND INTERPRETATIONSK SG. SIONG, SIBU
LINE 1: POLE DIPOLE LS ARRAY
Figure 2: Pseudosection profile for Line 1
Figure 3: Pseudosection profile for Line 1 with topography.
sand Clayey sandmixture
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This survey line was stretched 400 metres and cut across the football field of SK Sg. Siong. The surface ismainly covered by clayey sand mixture. Underneath the football field shows high resistivity indicate sandon the subsurface.RESULTS AND INTERPRETATION
SK SG. SIONG, SIBULINE 2: POLE DIPOLE LS ARRAY
Figure 4: Pseudosection profile for Line 2.
Figure 5: Pseudosection profile for Line 2 with topography.
Clayey sand
Saturated zone
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This survey line intersects with line 1 and parallel to the nearby river. Penetration depth is up to 140.7metres. Clayey sand is found at depth 17.9 metres until 140.7 metres. Saturated zone is believed to get itsrecharge from the nearby river.RESULTS AND INTERPRETATION
SK SG. SIONG, SIBULINE 3: POLE DIPOLE S ARRAY
Figure 6: Pseudosection profile for Line 3.
Figure 7: Pseudosection profile for Line 3 with topography.
Intersect withLine 5
Intersect withLine 1
Intersect withLine 6
bedrock Saturated zone
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This survey line intersects line 1, line 5 and line 6. Its penetration depth is up to 87.9 metres. From thispseudosection, underneath this survey line is mostly clayey sand (dark blue to dark green in colour).
RESULTS AND INTERPRETATIONSK SG. SIONG, SIBU
LINE 4: POLE DIPOLE S ARRAY
Figure 8: Pseudosection profile for Line 4.
Figure 9: Pseudosection profile for Line 4 with topography.
Intersect with
Line 5
Intersect with
Line 1Intersect withLine 6
Saturated zone
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This survey line intersects line 5, line 1 and line 6. Generally this area is covered by clay and sand mixture.
RESULTS AND INTERPRETATIONSK SG. SIONG, SIBU
LINE 5: POLE DIPOLE S ARRAY
Figure 10: Pseudosection profile for Line 5.
Figure 11: Pseudosection profile for Line 5 with topography.
Saturated area
Intersect withLine 2
Intersect withLine 3
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This survey line lies across the football field parallel to Line 1. Subsurface penetration is up to 77.5 metres.Subsurface features here is mainly covered by clayey sand (light green to dark green in colour).RESULTS AND INTERPRETATION
SK SG. SIONG, SIBULINE 6: POLE DIPOLE S ARRAY
Figure 12: Pseudosection profile for Line 6.
Figure 13: Pseudosection profile for Line 6 with topography.
Intersect with
Line 3
Intersect withLine 2
Saturated zone
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This survey line is set up parallel to the line 1 and line 5. Subsurface penetration is up to 87.9 metres andits feature here is mainly covered by clayey sand (light green to dark green in colour). This line proves thatunderneath school area have potential for fresh groundwater.TUBEWELL PROPOSAL
SK SG. SIONG, SIBULINE 6: POLE DIPOLE S ARRAY
Figure 14: Pseudosection profile for tubewell proposal at Line 6.
Site Resistivity (m)Water TypePosibilities Survey Line
ProposedTubewell (Along
Survey Line)
Depth of Tubewell
SK Sg. Siong,Sibu 10 - 120 Groundwater (fresh)
Line 6PDP4S
85 mN 0227.56.8E11157.14.8
40 m 50 m
Proposed Tubewell (PW1)
N 0227.56.8E11157.14.8
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TUBEWELL PROPOSALSK SG. SIONG, SIBU
LINE 3: POLE DIPOLE S ARRAY
Figure 16: Pseudosection profile for tubewell proposal at line 3.
Site Resistivity (m)Water TypePosibilities Survey Line
ProposedTubewell (Along
Survey Line)
Depth of Tubewell
SK Sg. Siong,Sibu 10 - 120 Groundwater (fresh)
Line 3PDP4S
115 mN 0227.56.2E 11157.13.3
50 m 60 m
Interpretation:All of this line provides a visible data in search for fresh groundwater. Resistivity value from 10m to120m (blue colour to green colour) in pseudosection indicate there is fresh groundwater underneath.
Comment:
Proposed Tubewell (PW3)
N 0227.56.2E 11157.13.3
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Existing tubewell cannot yield enough water since its screen pipe has collapsed. Proposed well is located40 meters from existing tubewell.
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SITE PHOTOS
School Signboard
Terrameter SAS4000 setup
Remote Cable Layout