Volume 29 (2023): Issue 2 (June 2023)

India’s coal production has ramped up over the years in response to rising demand from the country’s booming energy market and other industries. We’ll inevitably have to rely heavily on the energy industry. About 66% of India’s energy needs are met by the country’s thermal power plants, with 53% of that total coming from coal. India relies on the coal industry despite the fact that it causes serious difficulties for the environment, pollutes water supplies, and degrades land. In the next few decades, India would be completely depleted of its coal deposits if the current output rate of extraction is maintained. In this work, we discuss how to make long-term use of non-renewable resources possible for future generations.

The exploitation of the XIV horizon, in two slices, across the entire mining perimeter of the Slănic Prahova Salt Mine until the end of 2059 will result in the amplification of surface subsidence, already affected by the mining operations of Victoria, Cantacuzino, and Old Mines. Systematic annual monitoring of ground deformation has been conducted since 2004 through geometric leveling along selected representative alignments, which were utilized to forecast the temporal evolution of surface subsidence and the impact of mining the XIV horizon. Furthermore, 3D numerical modeling was employed to estimate the subsidence and ground displacements.

In the article, the authors present the approach of combining energy production systems, subsystems by obtaining specific advantages, facilitating the efficient conversion of resources subject to advanced energy-thermal treatment, and solutions are proposed for the creation of a “photovoltaic - other combining resources” matrix. obtaining the generational energy mix. The paper describes the endogenous economic growth through the knowledge of hybrid technological processes, the technical and technological changes in the field of energy, the relational implications in the field and advances the proposal of a hybrid energy system based on the mix of geothermal energy resources from closed coal mines) and renewable energy resources solar. Also, the breakdown of energy/geothermal heat sources recovered from galleries and long-front abattoirs as lots of a sub-system of energy production in a hybrid energy system based on the mix of geothermal mining and renewable solar energy resources is reported. The authors conclude that the addition of the “hydrogen production” sub-system to the hybrid energy system based on the mix of fossil and renewable energy resources represents extensive conceptual and operational specific development.

Stone blocks, such as marble, granite, and sandstone, are natural materials with excellent properties. The most important dimension stone in Romania is Ruschita marble, a natural stone known for its resistance to wear and ability to maintain its natural beauty, regardless of its colour. Regarding colour palette, Ruschita marble stands out for its excellent quality to suit even the most demanding requirements. It is available in shades such as yellowish, orange, pale pink or pink, with a compact structure and characteristic veining. Ruschita is Romania’s most famous marble deposit, exploited since the end of the 19^th century. The quarry exploitation is conditioned by naturally occurring fractures and discontinuities, such as faults, joints, and fissures, precluding larger blocks excavating with more significant commercial value. This paper describes two largely used techniques for discontinuity investigation, namely the televiewer and scanline methods used at the Ruschita marble quarry.

The development of the system document models in the field of MR-PYRO was done taking into account the adaptation of the application requirements of this management system, to the organizational and work process particularities specific to the pyrotechnic field, but also with the requirements of the legislation in force in the field of occupational health and safety, namely Law 319/2006 on safety and health at work and the methodological rules for its application, as well as specific legislation (Law 126/1995 on the regime of explosive materials and the Technical Norms of application with subsequent amendments and additions). The scientific article offers an original perspective of solving the problem in the field of management system of pyrotechnic articles (MR-PYRO). The MR-PYRO.EXE 01 software application ensures the operational and procedural development of the MSSM system documents based on the analysis and evaluation of the particular way of occurrence of all aspects of occupational safety and health managed at the level of economic operators working in the field of pyrotechnic articles.

The general safety rules applicable to high-risk industrial sites are based on both the 4 principles of working safely with explosive substances (knowing the risks, separating the risks, limiting the risks and overlapping safety devices), as well as the specific characteristics of the general and particular reports of explosion safety, together with the technical aspects related to the possible causes of explosion, the effects of explosion and safety distances, the protection against accidental triggering of the explosion, as well as the security in the field of explosive powders and pyrotechnic systems highlighting the limits related to the principle of pyrotechnic safety (knowledge, prevention and limitation of pyrotechnic risk).

The scientific article offers an original perspective of solving the problem in the field of explosion risk generated when explosive materials are involved, taking into account acts of ill-will, using the working facilities of some dedicated software for its analysis and evaluation, and the results obtained are expressed in a technical manner integrated within the specialized IT application TERRORISK.EXE 01.

Through this paper the project team aimed to demonstrate the utility and feasibility of using flights and photogrammetric methods in surface mining in mountainous areas. Thus, in the first part of the paper, the working principles, the applied methodology, the criteria for selecting the methodology, and the necessary resources are presented, and later the results obtained from the case study from the limestone quarry in Bistrița, Vâlcea are presented. At the same time, the environmental, relief and accessibility conditions in the mining perimeters were identified and practical recommendations were issued regarding the execution of a photogrammetric data acquisition flight in the surface mining operations in the mountain area. This paper indicates risk factors identified in quarries in the mountain area and offers practical solutions to avoid them.

The purpose of this work is to describe the realization of a photogrammetric mapping work, i.e. the creation of a high-resolution orthophotoplan mosaic, as a support in the inventory of land parcels belonging to the public domain of a territorial administrative unit in the rural area, subsequent registration in the Integrated Cadaster and Land Registry System, with all related technical-legal aspects.

Travertines are susceptible to fracturing/ cracking, making it difficult to extract large uncracked blocks of significant commercial value. In our study, we used the GPR – Ground Penetrating Radar and other geophysical methods (resistivity and seismic methods) to evaluate the degree of fracturing. Following the interpretation of the longitudinal and transversal GPR profiles, corroborated with the resistivities minima, led us to identify fractures and highly fracturing areas in the Carpinis quarry. In addition, using these combined methodologies and corroborating geophysical, geological, tectonic and geomorphological information creates the premises for an effective investigation of Carpinis quarry, which assists with optimising the mining process.

The methodology of comprehensive risk assessment for natural disasters has been the subject of recent research. The risk assessment process is thoroughly explained and applied to geological hazards (such as landslides, earthquakes, and tsunamis) that have a potential for calamity. Obtaining a complicated risk level for a few geophysical and geological risks in northeast Bulgaria is the major goal. It has been done to clearly identify the many dangers, their effects, the elements at risk, exposure, and vulnerability, as well as to analyze the secondary events that were generated. For the first time in practice, a thorough risk assessment approach is used, and it incorporates the idea of risk perception. The methodology’s adaptability enables the presentation of the results as either a risk matrix or a risk profile. It depends on the tasks, challenges, and scientific puzzles that need to be solved as well as expert judgment. The outcome showed strong practical applicability and sustainability.