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Mar 6 15:17
3 mos ago
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English term
tie in, to
English to French
Tech/Engineering
Mining & Minerals / Gems
mine design
Blasting
Production blasting will generally be carried out in a single lift and commonly initiated around a 1.2 m diameter raise bored slot raise located on the end of the stope.
The slot raise initially may serve as a fill raise for the stope below, then as a slot for blasting.
Blast holes will be charged with ANFO or emulsion, with the holes being “tied-in” immediately before the blast.
Production blasting will generally be carried out in a single lift and commonly initiated around a 1.2 m diameter raise bored slot raise located on the end of the stope.
The slot raise initially may serve as a fill raise for the stope below, then as a slot for blasting.
Blast holes will be charged with ANFO or emulsion, with the holes being “tied-in” immediately before the blast.
Reference comments
2 days 11 hrs
Reference:
to connect, to attach, to tie wires to blasting wire plan
The knots and splices used for connecting detonating cord is a very important part for the
safe use of cords. Cords should be spliced together with a square knot. The double wrap half hitch
should be used to connect with a square knot. The double wrap half hitch should be used to connect
(1) downlines, or uplines to a cord trunkline (2) cross-ties between trunklines (3) other right angle
hookups. Clove hitching can be used to connect a relatively stiff downline to a flexible trunkline.
Splices are not recommended in downlines or uplines inside a borehole for two reasons: (1) The
splice may be broken or damaged during the loading or stemming operation of the borehole (2)
Water may penetrate the exposed cord ends which could result in cord failure.
Most blasts that use detonating cord are delayed either on the surface or in the borehole.
Surface delays though are more vulnerable to failures or partial failures due to ground movement.
This problem can be minimized by the use of proper drill and delay patterns. The two most popular
ways to surface delay a detonating cord blast are: (1) MS connectors in the cord trunkline (2) MS
delay electric or nonelectric detonators attached to the cord downline. Cord uplines in deep
boreholes that are bottom primed with delay electric blasting detonators can be used to multiple
prime a borehole. The MS trunkline connectors offer the most convenient means of delays in
detonating cord. The MS connectors *** are tied into the trunkline***between the boreholes or groups of
boreholes to sequence the blast in a predetermined order. These MS delay connectors have delay
intervals of 5, 9, 17, and 25 milliseconds. Long exposure time to water, though can desensitize or
lengthen the delay time of these connectors.
https://www.energy.virginia.gov/coal/coal-mine-safety/docume...
Maybe search this document search word TIE...https://www.dynonobel.com/~/media/Files/Dyno/ResourceHub/Gui...
page 34 Always tie the PRIMALINE lead
to the PRIMALINE 5 trunkline
using a double-wrap clove hitch.
This particular knot is necessary
due to the minimum coreload in
the PRIMALINE leads. Adequate
surface area contact to the donor is
needed for reliable initiation.
safe use of cords. Cords should be spliced together with a square knot. The double wrap half hitch
should be used to connect with a square knot. The double wrap half hitch should be used to connect
(1) downlines, or uplines to a cord trunkline (2) cross-ties between trunklines (3) other right angle
hookups. Clove hitching can be used to connect a relatively stiff downline to a flexible trunkline.
Splices are not recommended in downlines or uplines inside a borehole for two reasons: (1) The
splice may be broken or damaged during the loading or stemming operation of the borehole (2)
Water may penetrate the exposed cord ends which could result in cord failure.
Most blasts that use detonating cord are delayed either on the surface or in the borehole.
Surface delays though are more vulnerable to failures or partial failures due to ground movement.
This problem can be minimized by the use of proper drill and delay patterns. The two most popular
ways to surface delay a detonating cord blast are: (1) MS connectors in the cord trunkline (2) MS
delay electric or nonelectric detonators attached to the cord downline. Cord uplines in deep
boreholes that are bottom primed with delay electric blasting detonators can be used to multiple
prime a borehole. The MS trunkline connectors offer the most convenient means of delays in
detonating cord. The MS connectors *** are tied into the trunkline***between the boreholes or groups of
boreholes to sequence the blast in a predetermined order. These MS delay connectors have delay
intervals of 5, 9, 17, and 25 milliseconds. Long exposure time to water, though can desensitize or
lengthen the delay time of these connectors.
https://www.energy.virginia.gov/coal/coal-mine-safety/docume...
Maybe search this document search word TIE...https://www.dynonobel.com/~/media/Files/Dyno/ResourceHub/Gui...
page 34 Always tie the PRIMALINE lead
to the PRIMALINE 5 trunkline
using a double-wrap clove hitch.
This particular knot is necessary
due to the minimum coreload in
the PRIMALINE leads. Adequate
surface area contact to the donor is
needed for reliable initiation.
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