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Central Mine Equipment Company
Quality Sampling Top Ten Reasons to Drill a Hole Top Ten Reasons to - - PowerPoint PPT Presentation
Quality Sampling Top Ten Reasons to Drill a Hole Top Ten Reasons to - - PowerPoint PPT Presentation
Central Mine Equipment Company Quality Sampling Top Ten Reasons to Drill a Hole Top Ten Reasons to Drill a Hole Getting paid for it Top Ten Reasons to Drill a Hole Getting paid for it Needed to get out of the shop Top Ten Reasons to
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Top Ten Reasons to Drill a Hole
- Getting paid for it
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Top Ten Reasons to Drill a Hole
- Getting paid for it
- Needed to get out of the shop
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Top Ten Reasons to Drill a Hole
- Getting paid for it
- Needed to get out of the shop
- Had to have something to write on this paper (log)
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Top Ten Reasons to Drill a Hole
- Getting paid for it
- Needed to get out of the shop
- Had to have something to write on this paper (log)
- Exercise
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Top Ten Reasons to Drill a Hole
- Getting paid for it
- Needed to get out of the shop
- Had to have something to write on this paper (log)
- Exercise
- Helper ran me out of truck with smell
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Top Ten Reasons to Drill a Hole
- Getting paid for it
- Needed to get out of the shop
- Had to have something to write on this paper (log)
- Exercise
- Helper ran me out of truck with smell
- Needed some place to put all this PVC
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Top Ten Reasons to Drill a Hole
- Getting paid for it
- Needed to get out of the shop
- Had to have something to write on this paper (log)
- Exercise
- Helper ran me out of truck with smell
- Needed some place to put all this PVC
- Ran out of coffee
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Top Ten Reasons to Drill a Hole
- Getting paid for it
- Needed to get out of the shop
- Had to have something to write on this paper (log)
- Exercise
- Helper ran me out of truck with smell
- Needed some place to put all this PVC
- Ran out of coffee
- To see what’s at the bottom of hole
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Top Ten Reasons to Drill a Hole
- Getting paid for it
- Needed to get out of the shop
- Had to have something to write on this paper (log)
- Exercise
- Helper ran me out of truck with smell
- Needed some place to put all this PVC
- Ran out of coffee
- To see what’s at the bottom of hole
- It stopped raining
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Top Ten Reasons to Drill a Hole
- Getting paid for it
- Needed to get out of the shop
- Had to have something to write on this paper (log)
- Exercise
- Helper ran me out of truck with smell
- Needed some place to put all this PVC
- Ran out of coffee
- To see what’s at the bottom of hole
- It stopped raining
- Get QUALITY samples
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Quality Sampling
- Means not letting the Drilling
Method or other Intangibles Change the Samples
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Quality Sampling
How many samplers are there?
- Split spoon
- Continuous samplers
- Piston samplers
- Direct push
- Bulk sampling
- Rotary samplers (including coring)
- Bailers
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Quality Sampling
Geotechnical
- Drive Sampling
- Push (hydraulic) Sampling
- Continuous Sampling
- Push Testing
- Rotary Sampling (including coring)
- Direct Push Sampling
- Bulk Sampling
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HSA Sampling
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Open Hole Rotary Problems
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Flight Auger Problems
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Quality Sampling
- Geotechnical
- Environmental
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Quality Sampling
Environmental
- Drive Sampling
- Push (Hydraulic) Sampling
- Continuous Sampling
- Rotary Sampling (including coring)
- Direct Push Sampling
- Bulk Sampling
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Quality Sampling
- Geotechnical
- Environmental
- Water Well
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Quality Sampling
Water Well
- Push (Hydraulic) Sampling
- Continuous Sampling
- Rotary Sampling (including coring)
- Bulk Sampling
- Bailer Sampling
- Cuttings
- Water (Quality and volume)
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Open Hole Rotary Problems
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Quality Sampling
- Geotechnical
- Environmental
- Water Well
- Mining
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Quality Sampling
Mining
- Push (Hydraulic) Sampling
- Continuous Sampling
- Rotary Sampling (including coring)
- Bulk Sampling
- Cuttings
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Quality Sampling
What Can Influence Samples
- Drilling Method
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ASTM Standards
- 4.6 Difficulties in drilling may occur if cohesionless soils are drilled below
the water table. Possibilities for sand lock or wedging of cuttings may
- ccur (2). In cases where sands enter the HSA, water or drilling fluid may
be added to the HSA column to provide hydrostatic balance or special pilot bit assemblies can be used (see 5.6). Problems may occur in getting the soil core barrel or pilot bit assembly back to the bottom of the HSA
- column. Highly saturated sands or liquefiable material may be drawn into
the HSA by vacuum created when the sampler barrel or pilot bit assembly is initially pulled back through the cutter head of the lead auger assembly from the bottom of the borehole.
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Flight Auger Problems
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ASTM Standards
- 4.5.3 SPT is also performed at shallow depths above the ground-
water table using solid stem flight augers (Practice D1452/D1452M), but below the water table borings may be subject to caving sands. Solid stem borings have been drilled to depths of
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Drive Casing
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ASTM Standards
- 4.5.2 SPT is used with other drilling methods including reverse circulation, sonic
drilling, and direct push methods practices. There are concerns, undocumented by research, with direct push (Guide D6282/D6282M), sonic drilling (Practice D6914/D6914M), and reverse circulation methods using heavy casing drive hammers (Guide D6286), that the extreme dynamic loading and vibrations could disturb some soils such as sands and soft clays past the seating interval. The professional responsible for the investigation should evaluate SPT under these conditions and if drilling disturbance is suspected, then N values can be checked against other drilling methods in section 4.5 or deploy the alternate drilling method through and ahead of the casings.
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Quality Sampling
What Can Influence Samples
- Drilling Method
- Material
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Quality Sampling
What Can Influence Samples
- Drilling Method
- Material
- Sampler
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Quality Sampling
What Can Influence Samples
- Drilling Method
- Material
- Sampler
- Driller
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ASTM Standards
- 1.4 This practice offers a set of instructions for performing one or more
specific operations. This document cannot replace education or experience and should be used in conjunction with professional
- judgment. Not all aspects of this practice may be applicable in all
- circumstances. This ASTM standard is not intended to represent or
replace the standard of care by which the adequacy of a given professional service must be judged, nor should this document be applied without consideration of a project’s many unique aspects. The word “Standard” in the title of this practices means only that the document has been approved through the ASTM consensus process.
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Quality Sampling
What Can Influence Samples
- Drilling Method
- Material
- Sampler
- Driller
- Water
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Open Hole Rotary
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Quality Sampling
What Can Influence Samples
- Drilling Method
- Material
- Sampler
- Driller
- Water
- Additives
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