Granite rock fragmentation at percussive drilling

2013 ◽  
pp. 437-442
Author(s):  
M Saadati ◽  
P Forquin ◽  
K Weddfelt ◽  
P Larsson
Keyword(s):  
Rock Fragmentation ◽  
Percussive Drilling ◽  
Granite Rock

scholarly journals A numerical study of the influence from pre-existing cracks on granite rock fragmentation at percussive drilling

2014 ◽  
Vol 39 (5) ◽  
pp. 558-570 ◽  
Author(s):  
Mahdi Saadati ◽  
Pascal Forquin ◽  
Kenneth Weddfelt ◽  
Per-Lennart Larsson ◽  
Francois Hild
Keyword(s):  
Numerical Study ◽  
Rock Fragmentation ◽  
Percussive Drilling ◽  
Granite Rock

Analysis on the mechanical properties of granite rock near the wellbore after percussive drilling and AWJ perforation

2020 ◽  
Vol 184 ◽  
pp. 106489 ◽  
Author(s):  
Yanliang Li ◽  
Jianming Peng ◽  
Kun Bo ◽  
Chaoyang Huang ◽  
Yanjun Zhang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Percussive Drilling ◽  
Granite Rock

scholarly journals Simulation on compound percussive drilling: Estimation based on multidimensional impact cutting with a single cutter

2021 ◽  
Vol 7 ◽  
pp. 3833-3843
Author(s):  
Yumei Li ◽  
Tao Zhang ◽  
Zefang Tian ◽  
Yiming Zheng ◽  
Zengmin Yang
Keyword(s):  
Percussive Drilling ◽  
Impact Cutting

Numerical simulation of impact on pneumatic DTH hammer percussive drilling

2009 ◽  
Vol 20 (5) ◽  
pp. 868-878 ◽  
Author(s):  
Changgen Bu ◽  
Yegao Qu ◽  
Zhiqiang Cheng ◽  
Baolin Liu
Keyword(s):  
Numerical Simulation ◽  
Percussive Drilling

scholarly journals The Evolution of Chemical Analysis

1996 ◽  
Vol 4 (1) ◽  
pp. 16-23
Author(s):  
Walter C. McCrone
Keyword(s):  
Chemical Analysis ◽  
Garden Of Eden ◽  
Analytical Instruments ◽  
Granite Rock ◽  
Long Time ◽  
Rabbit Carcass

On the eighth day, chemical analysis began. Adam, recovering after cooperating with God in creating Eve, felt the first pangs of hunger. Looking around, he spied a pile of stones left over after creation of some nearby mountains. He rejected a soft friable sandstone and chose a hard granite rock, took careful aim at a rabbit, and hit it squarely between the eyes. This was the basis for the first real meal in the Garden of Eden. A day or two later, Eue took a whiff of the rabbit carcass, thought for a moment, then fed it to the dog.Thus, the first chemical analytical instruments were Adam's eye and hand and Eve's nose. These, plus taste, sufficed by themselves for a long time thereafter but, eventually, refinements were necessary.

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