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Blasting operations are an essential part of underground mining activities, but the seismic waves generated during detonation may adversely affect the stability of underground mining structures such as galleries, chambers, intersections, and support systems. Repeated blasting can lead to cumulative damage, increasing the risk of degradation of both the rock mass and the installed support. This paper presents considerations regarding the assessment of the seismic effects of blasting operations on underground mining...

Starting in 1992, the Romanian mining industry underwent a restructuring process, which involved the closure of a significant number of mining perimeters. Without conducting a critical analysis of the causes that led to this extensive action and its resulting effects, it can be considered that some mining units, whose minimum geological reserves ensure exploitation for at least 10 years, could have real prospects for promoting solutions that guarantee economic efficiency, at least at the national level. In support...

This paper starts from an economic reality regarding the transportation situation and aims to introduce a scientific approach in a field that, in our country, has received more interest from a legislative perspective than a technical one. Transportation, in its broadest sense, has developed alongside human civilization and has incorporated throughout history all elements of its technical and scientific progress. However, in addition to the major benefits that have established transportation as a standalone and hig...

This paper begins with an analysis of the constructive-functional characteristics of hazardous goods transport systems, as required by legislation [3]. It is observed that safety elements primarily concern the materials from which parts or subassemblies in direct contact with or in close proximity to the hazardous substances being transported are made, as well as the general measures applicable to the vehicle-s electrical system, which aim to prevent overheating or to shield and prevent the transmission of heat to...

Safety protection against detonation due to accidental initiation of stored fireworks is of particular interest for safety because such detonations endanger the life and health of workers as a result of the uncontrollable effects of deflagration and pressure, the presence of toxic reaction products and the consumption of oxygen in ambient air which workers must breathe. At the same time, it should be borne in mind that material losses caused by explosions can be particularly high. The existence of the danger of ac...

The paper presents a theoretical and practical approach to the concept of risk assessment specific for the demolition of the industrial civil objectives with the help of explosives in terms of ensuring security premises for the effects generated following the blasting demolition work of this type of constructions. Blasting realization of industrial civil objectives to be demolished involves a series of operations that generate health and safety risks to economic operator employees which are carrying out work and f...

At European and national level there is Directive 2013/29/EU of the European Parliament and of the Council of 12 June 2013 on the harmonisation of the legislation of the member states relating to the making available on the market of pyrotechnic articles and Decision 1102 of 10 December 2014 issued by the Government of Romania for the national regulation of the placing on the market of these products. The specific quality system of the Explosive Materials and Pyrotechnic Articles Laboratory of INCD INSEMEX Petro?a...

In recent years, Romania has experienced a particular dynamic in terms of ensuring the security quality of explosive materials through the security requirements stipulated in the applicable harmonized standards. In this sense, the procedure for sampling the products that are the subject of explosive materials must take into account the technicalscientific substantiation of the objective establishment of sampling schemes indexed according to the acceptable quality level for batch-by-batch inspection in order to pro...

Used the specialized software solution regarding to the thermochemical facilities, we can predict detonation (e.g. detonation velocity, pressure, energy, heat end temperature, etc.) and combustion (e.g. specific impulse, force, pressure, etc.) performance of energetic materials. The calculation of detonation parameters is based on the chemical equilibrium steady-state model of detonation. The equilibrium composition of detonation and combustion products is calculated by applying modified White, Johnson, and Dantzi...

The evaluation of the seismic action generated by blasting, aims to establish the connection between the levels of ground vibration with the parameters of the blasting and the characteristics of the geological environment related to the quarry. In order to assess the seismic effects on site of the mining / civil / industrial objectives within the quarry, the criterion of the oscillation speed of the soil particles was chosen, because it was considered to be the only reproducible parameter for the whole frequency r...

Unwanted effects of detonation of explosive materials (explosions) can occur due to deliberate actions (terrorist attack) or accidental. Modelling the effects of the explosion on the environment and the urban neighboring, occupies an important place in global and national research programs for the modernization of techniques for the safe use of explosives, in order to combat and operatively counter accidental explosions or those based on their use for terrorist purposes. The current trends are on the way to approx...

?Pyrotechnic article? are products that contain explosive substances or an explosive mixture of substances designed to produce heat, sound, light, gas or smoke or a combination of such effects. Depending on the purpose for which they were made, pyrotechnic articles are used for entertainment purposes (fireworks), for the stage including film or television productions as well as for technical purposes. Due to the constituent substances, the pyrotechnic articles have a low or high risk level depending on the type an...

At national level, a series of technical regulations harmonized with European directives and norms are adopted, which present essential occupational safety and health requirements applicable to the field of explosives for civil use in various specific activities in which their use is necessary. Concerns in the field addressed in the paper, are also registered at the level of the European and international community, respectively, because a good knowledge of the concepts and the practical experience regarding the d...

The article aims at the presentation of results as well as the prognosis of deformations during mining works based on experimental measurements. For this study were explored the directional galleries from the layer nr.3 and transversal galleries from the mining basin in Valea Jiului. According to the depth of exploitation, the mining works are situated in rocks with variable resistance. In order to increase the reliability of mine works for the opening and afferent preparing of mining field from Valea Jiului, the ...