A Case Study in Robotic Mapping of Abandoned Mines

2006 ◽  
pp. 487-495 ◽  
Author(s):  
Christopher Baker ◽  
Zachary Omohundro ◽  
Scott Thayer ◽  
William Whittaker ◽  
Mike Montemerlo ◽  
...  
Keyword(s):  
Abandoned Mines ◽  
Robotic Mapping

scholarly journals Incorporation of the Method of Ranking the Hazards of Abandoned Mine Entries into a Rule-Based Expert System

Minerals ◽  
2019 ◽  
Vol 9 (10) ◽  
pp. 600 ◽  
Author(s):  
Mhlongo ◽  
Amponsah-Dacosta ◽  
Kadyamatimba
Keyword(s):  
Expert System ◽  
Limpopo Province ◽  
Abandoned Mines ◽  
Abandoned Mine ◽  
Production Rules ◽  
Web Based ◽  
Rule Based ◽  
Ranking Problems ◽  
The Web

The work of quantifying the problems of abandoned mines is the first step towards the rehabilitation of these mines. As the result, in all countries that have many abandoned mines, researchers and different organizations have been making efforts to develop decision-making tools, methods, and techniques for rehabilitation of abandoned mines. This paper describes the work conducted to incorporate the method for ranking the problems of abandoned mine entries into a rule-based expert system. This is done using the web-based expert system platform provided by expert system (ES)-Builder Shell. The ES is tested by applying it to the case study of the problems of abandoned mine entries in the areas of Giyani and Musina, Limpopo Province of South Africa. This paper gives details of the procedure followed in creating the production rules of the ES for ranking problems of abandoned mine entries (ES-RAME), its attributes, and the results of its application to the selected case study. The use of the ES-RAME is found to be important for setting the objectives and priorities of the rehabilitation of abandoned mine entries. In addition, the incorporation of the ranking method into the expert system ensured that the procedure of the tanking method is clearly communicated and preserved as the rules of the ES. The expert system also has the advantages of being consistent in its guidance, and it gives the user an opportunity to go through the ranking process of the system using any possible fictitious information; this gives the user a feel for the ranking process and the data required when using the ES-RAME.

scholarly journals A system for volumetric robotic mapping of abandoned mines

2004 ◽  
Author(s):  
S. Thrun ◽  
D. Hahnel ◽  
D. Ferguson ◽  
M. Montemerlo ◽  
R. Triebel ◽  
...  
Keyword(s):  
Abandoned Mines ◽  
Robotic Mapping

scholarly journals Hydrogeological Investigation for the Assessment of Spring Pollution Due to Abandoned Mines in a Karst Area

Water ◽  
2021 ◽  
Vol 13 (17) ◽  
pp. 2399
Author(s):  
Hujun Ren ◽  
Wanghua Sui ◽  
Xiangdong Meng ◽  
Rui Guo
Keyword(s):  
Southern China ◽  
Tracer Tests ◽  
Abandoned Mines ◽  
Guizhou Province ◽  
Karst Area ◽  
Water Drainage ◽  
Geophysical Surveys ◽  
Hydrogeological Investigation ◽  
Cave Detection

This paper presents a hydrogeological investigation case study for assessing the sources and pathways of spring pollution in a karst area in Guizhou Province, Southern China. Our methods included hydrogeological surveys, geophysical surveys, cave detection, tracer tests, and borehole drilling. The results showed that the pollution of the Longdong Spring is controlled by the amount of rainfall, which also determines the duration of pollution. The concentration of Fe and Mn ions in the spring was found to exceed that in the code for drinking water quality (China) by more than 300 times. The investigations showed that the source of the pollution is the mine water drainage from the abandoned Feilong coal mine, which is located to the northwest of the Longdong Spring. The drainage to the spring was found to occur 24 h after the groundwater level in the goaf reached approximately +908 m above sea level. This indicates a recharge pathway between the abandoned mine and the Longdong Spring. Recommendations for grouting around the spring and sinkhole for pollution control are put forth.

scholarly journals A Methodology to Estimate the Potential Production of Bioenergy Based on the Species, Cultivation Area Conditions, and Period of Forest Trees

2021 ◽  
Vol 43 (5) ◽  
pp. 377-389
Author(s):  
Heesoo Lee ◽  
Seong-Rin Lim
Keyword(s):  
Fossil Fuels ◽  
Energy Resource ◽  
Ground Level ◽  
Site Index ◽  
Economic Feasibility ◽  
Abandoned Mines ◽  
Stem Volume ◽  
Biomass Expansion Factors ◽  
Root Shoot Ratio

Introduction : Since the population increases and the industry develops, the demand for fossil fuels continues to increase, creating problems of energy resource depletions and accelerating global warming. Thus, many countries are making active efforts to replace fossil fuels with bioenergy as a renewable energy. In particular, trees managed and produced by forest industry have a high potential as energy sources for biofuel industry, because they have a conceptual characteristic of carbon neutrality. Recently, energy plan and policy are being developed to cultivate trees on fallow lands, environmentally restored sites, and ground-level work places of abandoned mines; however, economic feasibility for such plans and policies cannot be readily evaluated due to insufficient information on the amount of the energy to be produced from tree cultivation. Thus, the objective of this study is to develop a methodology which can be used to estimate the potential energy amount of the bioenergy from tree cultivation based on tree species, cultivation time, and cultivation area conditions.Methodology : The methodology consists of three stages. In the first stage, the total volume of the trees per area is estimated by using the number of trees per unit area and the average stem volume of the tree, which are affected by the site index representing the environmental conditions of cultivation area. In the second stage, the total mass of biomass is calculated by using the density of wood, the biomass expansion factors for the above-ground biomass, and root-shoot ratio. In the last stage, the amount of the energy produced from the tree cultivation is estimated by taking into account the caloric value evaluated based on the carbon, hydrogen, and oxygen compositions of the tree.Case Study : A case study for conifers and broad-leaved trees is performed to demonstrate the methodology. The conifers are Jungbu local pine, Korean white pine, and Japanese larch, and the broad-leaved trees are oak, red oak, and birch. The results of the case study validate the developed methodology and clearly showed the procedure and necessity for the methodology by estimating the bioenergy productions from the trees.Conclusions : The developed methodology can be used to provide practical information needed to determine the economic feasibility of the plan, policy, and project for tree cultivations.

scholarly journals Exploring the Interfaces between Ethnobiology and Ecotoxicology: A Novel Approach

2020 ◽  
Vol 11 (1) ◽  
pp. 29-37
Author(s):  
Graziela Dias Blanco ◽  
Natalia Hanazaki ◽  
Suelen Beeck Cunha ◽  
Marta Jussara Cremer ◽  
Mari Lucia Campos
Keyword(s):  
Heavy Metals ◽  
Cultural Identity ◽  
Local Communities ◽  
Food Resources ◽  
Abandoned Mines ◽  
First Case ◽  
Novel Approach ◽  
Public Recognition ◽  
Local Plants

In recent years, increases in urbanization and industrialization have led to an increase in contaminated areas, which directly affect traditional, indigenous, and local communities who use natural resources for food and medicine. We present a discussion about the use of food resources from areas contaminated with heavy metals and focus on two case studies in southern Brazil.  In the first case study, we interviewed 194 residents about the use of plants as food resources or medicine in areas adjacent to abandoned mines, and thus potentially contaminated with heavy metals. In the second case study, we interviewed 39 fishers about the consumption of fish resources from areas potentially contaminated by industrial activities. We also asked about their perceptions regarding contamination, changes in the landscape, and health problems that could be related to contamination. Although people are aware of contamination, consuming local plants and sea food has not stopped because some of these practices are directly linked to their cultural identity; additionally, there might be a lack of public recognition toward contamination. The combination of ethnoecological and ecotoxicological studies is necessary to assess environmental problems caused by heavy metals, as well as concerns about food security and the health of local communities.

Alternative use of abandoned mines for geotourism: a case study using geoinformatics

2021 ◽  
pp. 191-204
Author(s):  
Rahul Mandal ◽  
Sanjoy Kumar Sadhukhan ◽  
Premangshu Chakrabarty
Keyword(s):  
Abandoned Mines

The Genesis and Internal Dynamics of El Salvador's People's Revolutionary Army, 1970–1976

2014 ◽  
Vol 38 (01) ◽  
pp. 102-129
Author(s):  
ALBERTO MARTÍN ÁLVAREZ ◽  
EUDALD CORTINA ORERO
Keyword(s):  
Latin America ◽  
El Salvador ◽  
Early Years ◽  
Left Wing ◽  
Internal Dynamics ◽  
Internal Coherence ◽  
The 1960S

AbstractUsing interviews with former militants and previously unpublished documents, this article traces the genesis and internal dynamics of the Ejército Revolucionario del Pueblo (People's Revolutionary Army, ERP) in El Salvador during the early years of its existence (1970–6). This period was marked by the inability of the ERP to maintain internal coherence or any consensus on revolutionary strategy, which led to a series of splits and internal fights over control of the organisation. The evidence marshalled in this case study sheds new light on the origins of the armed Salvadorean Left and thus contributes to a wider understanding of the processes of formation and internal dynamics of armed left-wing groups that emerged from the 1960s onwards in Latin America.

Culture and the plasticity of perception

2020 ◽  
Vol 43 ◽  
Author(s):  
Michael Lifshitz ◽  
T. M. Luhrmann
Keyword(s):  
Cultural Context ◽  
Sensory Experience ◽  
Cultural Learning ◽  
The World

Abstract Culture shapes our basic sensory experience of the world. This is particularly striking in the study of religion and psychosis, where we and others have shown that cultural context determines both the structure and content of hallucination-like events. The cultural shaping of hallucinations may provide a rich case-study for linking cultural learning with emerging prediction-based models of perception.

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