JPWO2020163302A5

JPWO2020163302A5 -

Info

Publication number: JPWO2020163302A5
Application number: JP2021544941A
Authority: JP
Publication date: 2023-02-08
Anticipated expiration: 2040-02-04

Claims

A method of generating a blast plan, comprising:
Receiving blasting data including geometric and geological characteristics of a blast site bench to be blasted and diameter and detonation characteristics of available explosives, said geometric characteristics of said bench comprising: receiving, including a face height of the bench;
identifying a patterned blast zone that can be adequately fragmented by the available explosive in a blast hole located on the bench, wherein the ratio of the face height to the available explosive is determining, including determining a relationship between energy and the geological properties of the bench;
identifying loads and spacings from the pattern blast area;
and generating a blast plan using said loads and said spacings.

Determining the pattern blast zone includes calculating the geometric relationship of the face height to the diameter of the available explosive material, which is specific to the geological properties of the bench, to determine the raw pattern blast zone. 2. The method of claim 1, comprising identifying.

Determining the pattern blast zone is an equation with geological constants empirically fitted to prior blast data from the prior blast that resulted in adequate fracture of the particular bench material of the prior blast: 2. The method of claim 1 including inputting as a variable the ratio of the face height to the diameter of the available explosive to identify a raw pattern blast zone.

Determining the pattern blasting zone includes the specific energy of the available explosive and the blast used in the previous blast from which the previous blasting data used in generating the equation is derived. 4. The method of claim 3 , further comprising adjusting the raw pattern blast zone based on the difference between the specific energy of the explosive.

5. The method of any one of claims 2-4 , wherein identifying the pattern blast zone further comprises adjusting the raw pattern blast zone based on the volume of the available explosive.

6. A method according to any one of claims 2 to 5 , wherein said diameter of said usable explosives comprises the diameter of said blastholes located in said bench, and said usable explosives comprise bulk explosives. described method.

Identifying the pattern blast zone includes defining an area around a hole in a blast plan, the pattern blast zone being defined by a first factor based on the geological characteristics and the face height, the available 2. The method of claim 1, comprising the product of a second factor based on the specific energy of the explosive and a third factor based on the diameter of the available explosive.

the first coefficient,
calculating the result of multiplying the first geological coefficient by the natural logarithm of the face height dividend divided by the diameter of the usable product;
8. The method of claim 7 , further comprising calculating by subtracting the result by a second geological coefficient.

9. The method of any one of claims 7-8 , further comprising calculating the second factor by adding a correction factor to the relative bulk strength of the available explosive.

10. The method of any one of claims 7-9 , further comprising calculating the third factor by dividing the diameter by a unit of measure factor and squaring the resulting dividend.

11. A method according to any one of claims 7 to 10 , wherein determining the load further comprises multiplying the square root of the pattern blast area by a constant derived from the rock class from the geological features of the blast site. the method of.

The geological characteristics of the blast site include rock density, rock type, rock strength, damping characteristics, or combinations thereof; receiving blasthole parameters including water potential and/or potential and available drill diameter;
the type of explosives available, the weight and/or volume of the available explosives transportable to the blast site, the weight of material to be blasted, the volume of material to be blasted and transportable to the blast site 12. A method according to any preceding claim, further comprising receiving information about the available explosives, including the number of holes that can be filled with the available explosives.

13. The method of claim 12 , wherein the blast hole parameters include a desired blast pattern type and the constant is further derived based on the shape of the desired blast pattern type.

generating a data set including a plurality of permutations of the received blasting data;
simulating blasting for each of said plurality of permutations to identify a plurality of simulation results, wherein said blasting plan is based on a highest scoring simulation result. The method described in .

the blasting plan,
drilling a hole according to said blasting plan;
15. The method of any one of claims 1 to 14 , further comprising performing by one or more of filling the holes with the available explosive material according to the blasting schedule and initiating detonation according to the blasting schedule. The method described in section.

A method of generating a blast plan, comprising:
receiving blast data including blast site dimensions, blast site geology and available explosive agent types;
generating a data set including a plurality of permutations of the received blasting data;
simulating blasting for each of the plurality of permutations to identify a plurality of simulation results;
generating a blast plan based on the highest scoring simulation results, the blast plan identifying and generating the locations of blast holes to be drilled and the amount of explosive charge to be used.

17. The method of claim 16 , wherein simulating the blasting for each of the plurality of permutations includes identifying a pattern blast zone based on permutation explosive type and geology of the blast site.

18. The method of claim 17 , wherein simulating the blasting for each of the plurality of permutations further comprises identifying an initial load and an initial spacing based on the pattern blasting area.

The initial load is

where C is a constant derived from the rock class and the initial spacing is

19. The method of claim 18 , wherein

A system for generating a blast plan, comprising:
a memory device for storing blasting data including blast site dimensions, blast site geology and available explosive types;
a processing unit, the processing unit comprising:
generating a data set including a plurality of permutations of the blasting data;
identifying a spacing and load for each of the plurality of permutations that results in minimal overflow or underflow of the hole at the blast site, wherein the spacing and load are determined by the explosive type and the identifying based on the geology of the blast site;
verifying that blasting for each of the plurality of permutations using the specified spacing and load satisfies a set of blasting criteria;
scoring the verified blasting characteristics for each of the plurality of permutations;
generating a blast plan based on the highest score verification results, the blast plan identifying and generating the location of blast holes to be drilled and the amount of explosive charge to be used.

21. The system of claim 20 , wherein said processing unit further generates a three-dimensional model of said blast site using a plurality of images.

22. The system of claim 21 , wherein the processing unit further overlays the blast plan on the three-dimensional model of the blast site.

The processing unit is
receiving a post-blast image of the blast site;
The system of any of claims 20-22 , further comprising performing a post-blast analysis on the post-blast images to identify debris size and debris diffusion.

A method of generating a blast plan, comprising:
receiving blast data including blast site dimensions, blast site geology and available explosive types;
generating a data set including a plurality of permutations of the received blasting data;
identifying a plurality of spacings and load configurations for each of the plurality of permutations based on the explosive type of each of the plurality of permutations and the geology of the blast site;
simulating blasting for each of said plurality of permutations, and any of said plurality of intervals and load configurations of each of said plurality of permutations resting on any other absolute values associated with other intervals and load configurations; determining whether a target blasting criterion is met with a remainder of absolute value less than
generating a blast plan based on simulation results.

25. The method of claim 24 , wherein the remainder of the absolute value is determined by dividing the spacing or the load by one of the dimensions of the blast site.

scoring the plurality of simulation results;
26. The method of claim 24 or 25 , further comprising generating the blasting plan based on the highest scoring simulation results.

27. The method of claim 26 , wherein the scoring of the plurality of simulation results is based on one or more of cost, number of decks, number of holes, load stiffness ratio, and vibration score.

28. The method of any one of claims 24-27 , further comprising varying the explosive type within the plurality of permutations.