MATEC Web Conf.
Volume 342, 20219th edition of the International Multidisciplinary Symposium “UNIVERSITARIA SIMPRO 2021”: Quality and Innovation in Education, Research and Industry – the Success Triangle for a Sustainable Economic, Social and Environmental Development”
|Number of page(s)||11|
|Section||Challenges in Mining, Mineral Processing, Surveying and Civil Engineering|
|Published online||20 July 2021|
Experimentation of a new type of permissible explosive under the specific conditions of the Jiu Valley mines
National Institute for Research and Development in Mine Safety and Protection to Explosion – INSEMEX, Department Security of Explosives and Pyrotechnic Articles, 32-34 G-ral Vasile Milea Street, 332047 - Petrosani, Romania
* Corresponding author: firstname.lastname@example.org
At the underground mining works performed in coal, rock and mixed coal & rocks, the process applied almost exclusively is by drilling & blasting. Given that the mines in the Jiu Valley are classified as methane mines, this involves the use of explosives and means of initiation that are safe from methane gas and coal dust. To date, permissible powdered explosives have been widely used. The drilling & blasting patterns were established according to the physical - mechanical and geological characteristics of the rocks in the massif, the type and section of the mining works as well as the restrictions imposed by the methane regime of the mines. In recent years, the widespread use of emulsion explosives has led to the development of permissible types of emulsion explosives. In order to use the permissible emulsion in the coal mines in the Jiu Valley, it was necessary to test in the INSEMEX landfill the safety and functioning parameters as well as to perform underground blasts, in the specific conditions of the methane coal mines. The paper describes the underground experimental blasting works performed, as well as technical and safety recommendations for the use of this type of explosive - permissible emulsion.
© The Authors, published by EDP Sciences, 2021
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