Rock blasting method and system for adjusting a blasting plan in real time

Patent metadata

Field	Value
Publication number	US-9587925-B2
Application number	US-201514629427-A
Country	US
Kind code	B2
Filing date	Feb 23, 2015
Priority date	Feb 21, 2014
Publication date	Mar 7, 2017
Grant date	Mar 7, 2017

Abstract

A rock blasting method and a system of rock blasting sensors and charges which form a network for use in the mining industry. The method and the system being able to self-adjust in order to maximize the extraction of raw material from a rock mass while minimizing the costs of operation and diminishing the environmental impact of the mining process.

First claim

The invention claimed is:

1. A rock blasting wireless sensor network, comprising:
an initiation system arranged to detonate a plurality of explosive loads in a rock blasting operation;
a plurality of rock blasting sensors arranged to detect rock blasting parameters during the rock blasting operation;
a wireless communication device arranged to communicate with the rock blasting sensors to exchange data;
a processor configured for decoding and processing the rock blasting parameters according to a blast plan adjustment algorithm to generate an adjustment signal; and
wherein at least one of the rock blasting sensors is in communication with the processor, during the rock blasting operation, and is configured to receive the adjustment signal in real time, and to adjust a blast timing of at least one of the plurality of explosive loads.

2. The rock blasting wireless sensor network according to claim 1 , wherein each of the rock blasting sensors can detect at least one of the following parameters: speed of propagation of shock waves, or pressure, or tension, or traction, or temperature.

3. The rock blasting wireless sensor network according to claim 1 , wherein each rock blasting sensor is arranged to communicate with at least one other rock blasting sensor via through-the-earth communications signaling.

4. The rock blasting wireless sensor network according to claim 1 , wherein the initiation system can initiate detonation of at least a first explosive load of the plurality of explosive loads, and wherein the blast plan adjustment algorithm can generate a self-organizing blast plan for the detonation of each successive explosive load based on a first set of data received from the plurality of rock blasting sensors after the detonation of the first explosive load and based on each successive set of data received from the plurality of rock blasting sensors after each successive detonation of each successive explosive load.

5. The rock blasting wireless sensor network according to claim 1 , wherein the initiation system can initiate a pre-established blast plan, and wherein the blast plan adjustment algorithm can adjust the pre-established blast plan to form a self-organizing blast plan after each detonation based on each set of data received from the plurality of rock blasting sensors after each detonation.

6. The rock blasting wireless sensor network according to claim 1 , wherein blast plan adjustment algorithm can generate successive self-organizing blast plans that each differ temporally from a pre-established blast plan.

7. The rock blasting wireless sensor network according to claim 1 , wherein the blast plan adjustment algorithm can generate successive self-organizing blast plans that each differ from a pre-established blast plan, wherein the blast plan adjustment algorithm can adjust in real time the rock blasting operation based on the collected real time data, and wherein the blast plan adjustment algorithm can adjust by at least one of anticipating, delaying, or canceling a firing pattern of the rock blasting operation for at least one explosive load.

8. The rock blasting wireless sensor network according to claim 1 , wherein the blast plan adjustment algorithm can adjust a firing pattern of the rock blasting operation in order to adjust a magnitude and/or direction of a shock wave by causing wave patterns to constructively or destructively interfere.

9. The rock blasting wireless sensor network according to claim 1 , wherein the wireless communication device is configured to enable two or more of the plurality of rock blasting sensors to communicate with each other using at least through the earth (TTE) communication signaling.

10. The rock blasting wireless sensor network according to claim 1 , wherein each rock blasting sensor of the plurality of rock blasting sensors includes a wireless communication device, and wherein adjacent rock blasting sensors of the plurality of the plurality of rock blasting sensors can communicate with one another via the wireless communication device.

11. The rock blasting wireless sensor network according to claim 10 , wherein the adjacent rock blasting sensors communicate with each other using at least through the earth (TTE) communication signaling.

12. The rock blasting wireless sensor network according to claim 1 , wherein the plurality of rock blasting sensors comprises a cluster of rock blasting sensors, and wherein the cluster is associated with one or more of the plurality of explosive loads.

13. The rock blasting wireless sensor network according to claim 12 , wherein the cluster of rock blasting sensors communicate with each other using at least through the earth (TTE) communication signaling.

14. The rock blasting wireless sensor network according to claim 1 , wherein one or more rock blasting sensors of the plurality of rock blasting sensors are configured to relay the data without being associated with an explosive load of the plurality of explosive loads.

15. The rock blasting wireless sensor network according to claim 14 , wherein the plurality of rock blasting sensors configured to relay the data communicate with each other using at least through the earth (TTE) communication signaling.

16. The rock blasting wireless sensor network according to claim 1 , wherein the processor is further configured to execute one or more positioning techniques to check for placement errors in a placement of the plurality of explosive loads and to generate complementary relative positional corrections to the placement of at least one of the plurality of explosive loads.

Assignees

• Vale Sa

Inventors

• Garcia Luis Guilherme Uzeda
• Araki Rodrigo Duque

Classifications

• F42D1/055 Primary

  specially adapted for firing multiple charges with a time delay · CPC title

• F42D1/06

  Relative timing of multiple charges ({F42D1/043 and } F42D1/055 take precedence) · CPC title

• F42D3/04

  for rock blasting · CPC title

• F42D1/042 Primary

  Logic explosive circuits, e.g. with explosive diodes · CPC title