Drilling and Blasting

Question 1

Preferred for all methods of forming a directional hole in
rock

Answer 1

rock penetration

Question 2

method of rock penetration that utilizes mechanical energy to break rocks

Answer 2

mechanical attack

Question 3

method of rock penetration by disintegration of rock by fluid injection and commonly used for placer deposits

Answer 3

fluid attack

Question 3

method of rock penetration that penetrates rock by spalling

Answer 3

thermal attack

Question 4

method of rock penetration that is attractive as an accessory rather than a primary means of penetration

Answer 4

chemical attack

Question 5

rock penetration method that includes electrical, light, and energy and are experimental

Answer 5

other methods

Question 5

method of rock penetration that is referred to as vibratory drilling

Answer 5

sonic attack

Question 6

Involves drilling closely spaced
holes within the deposit to
increase the confidence in
resource estimation. It helps to
determine the distribution and
continuity of mineralization

Answer 6

infill drilling

Question 6

Utilizes diamond core drilling to
obtain cylindrical core samples of
the rock. Core samples provide
detailed geological information,
including the mineral composition
and structure

Answer 6

core drilling

Question 6

Involves drilling shallow holes to
identify surface mineralization
and assess the potential of an
area

Answer 6

prospecting drilling

Question 7

A faster and cost-effective method that
uses compressed air to
collect samples during
drilling

Answer 7

reverse circulation drilling

Question 8

Assesses the stability and
rock characteristics in
the deposit area. This
information is crucial for
mine design and
planning

Answer 8

geotechnical drilling

Question 9

energy source of a drilling machine

Answer 9

drill

Question 10

energy transmitter part of a drill

Answer 10

rod

Question 11

energy applicator part of a drill

Answer 11

bit

Question 12

part of drill that controls dust, cools the bit, and cleans the hole

Answer 12

fluid

Question 13

Impacts the rock like a
hammer-like blow

Answer 13

percussion drilling

Question 14

Penetrates by plowing action

Answer 14

rotary drag bit drilling

Question 15

This uses a rotary drill machine
rod and drilling fluids in
conjunction with a swivel-type
double-tube core barrel

Answer 15

conventional drilling system

Question 15

Form of drill rig is the same as drag-bits, employing the
same forces to achieve penetration

Answer 15

rotary roller bit drilling

Question 16

Hybrid form of drilling, combining independent
percussive and rotational actions

Answer 16

rotary percussion drilling

Question 17

This is modified system over conventional drilling where it also uses a swivel-type double-tube core barrel where the inner tube containing the core can be hoisted through the drill rods while the outer tube and rods remain in the hole

Answer 17

wireline drilling system

Question 18

provides a means of hoisting and
lowering of the necessary tools

Answer 18

derrick

Question 19

refers to the distance
between the blasthole and
the nearest free face or
excavation boundary

Answer 19

burden

Question 19

refers to the
distance between individual
blastholes within a blast
pattern

Answer 19

spacing

Question 20

s the distance
drilled below the floor level to
ensure that the full face of
rock is removed.

Answer 20

sub drill

Question 20

Also known as blasting initiators, these are small
explosive devices that are attached to
the detonators to initiate the explosion of
the main explosive charge

Answer 20

basting caps

Question 21

Devices used to
initiate the explosion of explosives.

Answer 21

detonators

Question 22

A device used to amplify or
enhance the energy of the initiating
charge. These are often used when a
stronger initiation is required to ensure
reliable detonation of the main explosive
charge.

Answer 22

booster

Question 23

A flexible plastic explosive
cord that combines a core of high-energy explosive material with a
protective outer covering

Answer 23

cordtex

Question 23

characterized by their rapid and complete
reaction, producing a supersonic shock wave.

Answer 23

high explosives

Question 24

have a slower
rate of reaction and typically burn rather than
detonate. They are often used as propellants or in
fireworks.

Answer 24

low explosives