Research on Blasting Damage Control of 90° Slit Charge Structure

IF 1.5 4区工程技术 Q3 METALLURGY & METALLURGICAL ENGINEERING

Mining, Metallurgy & Exploration Pub Date : 2024-05-13 DOI:10.1007/s42461-024-00922-6

Chenglong Xiao, Guoli Shi, Zhiwei Zhao, Chenxi Ding

引用次数: 0

Abstract

This study investigates the directional blasting of a 90° slit charge structure using laboratory experiments and field tests. A 90° slit charge suitable for the corner of roadway is proposed. After the slit charge blasting, two long main cracks along the slit, and several short secondary cracks in other directions. The slit charge not only significantly reduces damage to the surrounding rock, but also improves the quality of the roadway contour. In addition, a comprehensive damage evaluation system of the roadway contour and the surrounding rock is constructed using digital image analysis, borehole televiewer, and CT scanning.

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90° 狭缝装药结构的爆破损伤控制研究

本研究通过实验室实验和现场测试，对 90° 狭缝装药结构的定向爆破进行了研究。提出了一种适用于巷道转角处的 90° 狭缝装药。狭缝装药爆破后，沿狭缝出现两条长长的主裂缝，在其他方向出现几条短短的次裂缝。狭缝装药不仅大大减少了对围岩的破坏，还提高了巷道轮廓的质量。此外，还利用数字图像分析、钻孔遥视仪和 CT 扫描构建了巷道轮廓和围岩的综合损伤评估系统。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Mining, Metallurgy & Exploration Materials Science-Materials Chemistry

CiteScore

3.50

自引率

10.50%

发文量

177

期刊介绍： The aim of this international peer-reviewed journal of the Society for Mining, Metallurgy & Exploration (SME) is to provide a broad-based forum for the exchange of real-world and theoretical knowledge from academia, government and industry that is pertinent to mining, mineral/metallurgical processing, exploration and other fields served by the Society. The journal publishes high-quality original research publications, in-depth special review articles, reviews of state-of-the-art and innovative technologies and industry methodologies, communications of work of topical and emerging interest, and other works that enhance understanding on both the fundamental and practical levels.