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Rock Mechanics and Rock Engineering

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01-08-2023 | Original Paper

Research and Application of High-Energy Gas Fracturing Mechanism Based on CT Scanning Technology

Authors: Xiangrui Wei, Xiang Wang, Guangan Wu, Quanwei Liu, Yansong Zhang

Published in: Rock Mechanics and Rock Engineering | Issue 11/2023

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Abstract

A high-energy gas rock-breaking material and method suitable for shallow hole blasting has been proposed. The rock-breaking principle and law of high-energy gas were analyzed through laboratory rock-breaking experiments combined with CT scanning and three-dimensional reconstruction technology. The results showed that the specimen after the action of high-energy gas was broken evenly and the energy utilization rate was high. However, with the increase in the dosage, energy would be wasted and the rock would be over-crushed. According to the analysis of the deflagration pressure curve of high-energy powder, the action process of high-energy gas could be roughly divided into four stages: crack initiation, high-speed expansion, low-speed expansion, and pressure reduction. At the same time, the multi-level interaction mechanism of “gas expansion + detonation impact” between high-energy gas and rock mass was proposed. Finally, the superior rock-breaking effect of high-energy gas was verified through engineering application, which provides scientific guidance for the later scheme optimization.

previous article Rate- and Normal Stress-Dependent Mechanical Behavior of Rock Under Direct Shear Loading Based on a Bonded-Particle Model (BPM)

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Title: Research and Application of High-Energy Gas Fracturing Mechanism Based on CT Scanning Technology
Authors: Xiangrui Wei
Xiang Wang
Guangan Wu
Quanwei Liu
Yansong Zhang
Publication date: 01-08-2023
Publisher: Springer Vienna
Published in: Rock Mechanics and Rock Engineering / Issue 11/2023
Print ISSN: 0723-2632
Electronic ISSN: 1434-453X
DOI: https://doi.org/10.1007/s00603-023-03487-w

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