SENECA SURFACE COAL MINES--A 40 YEAR CASE STUDY IN RECLAMATION TECHNIQUES— TRIUMPHS AND FAILURES: TWO STUDIES OF SHRUB ESTABLISHMENT

The data on the frequency, density and abundance of the lichens growing around the Moghla Coal mines, Kalakote has been recorded and compared with lichens growing in a forest area away from the coal mines to work out effect of coal mines on the diversity and distribution of lichens. The data revealed that pollutants released by the open coal mining activities not only effected qualitative distribution but also have effect on the quantitative parameters. Over all 10 species of lichens belonging to 9 genera and 6 families have been recorded from the vicinity of coal mines as compared to 15 species, belonging to 9 genera and 7 families, recorded from the forest area.

Download Full-text

Assessment of occupational health exposure to particulate matter around opencast coal mines, India: a case study

Arabian Journal of Geosciences ◽

10.1007/s12517-018-3631-2 ◽

2018 ◽

Vol 11 (14) ◽

Cited By ~ 1

Author(s):

Satya Prakash Sahu ◽

Manish Yadav ◽

Neha Rani ◽

Arka Jyoti Das

Keyword(s):

Particulate Matter ◽

Occupational Health ◽

Coal Mines ◽

Opencast Coal Mines

Download Full-text

Identification of Double-layered Water-filled Zones Using TEM: A Case Study in China

Journal of Environmental and Engineering Geophysics ◽

10.2113/jeeg23.3.297 ◽

2018 ◽

Vol 23 (3) ◽

pp. 297-304

Author(s):

Guoqiang Xue ◽

Dongyang Hou ◽

Weizhong Qiu

Keyword(s):

Field Survey ◽

Coal Mines ◽

Northern China ◽

Shanxi Province ◽

Well Drilling ◽

Borehole Logging ◽

Transient Electromagnetic ◽

Geophysical Technique ◽

Instrument Sensitivity

At present in China, the use of the transient electromagnetic method (TEM) is emerging as a leading geophysical technique for exploration of water-filled zones in coal mines. These zones are more conductive than the host coal and are easy targets to map. However, there is a growing interest for the investigations of double-layered or multi-layered mined-out zones. Therefore, it is necessary to study the feasibility of TEM's abilities to detect double-layered, water-filled voids. In this study, the basic hydrogeological conditions of a survey area, located in the northern China, are described. The corresponding geophysical models of the single- and double-layered water-filled zones are developed from borehole logging data. Then, forward calculations of different models are carried out with 1D numerical simulations. The modeling results show that it is feasible for TEM to identify these types of targets under certain conditions, including instrument sensitivity, low resistivity for the water-filled zones, and shallower depths. Moreover, the field survey for locating double-layered water-filled zones in coal mines in the Datong region of Shanxi Province is verified by well drilling.

Download Full-text

Development of a Protective Enclosure for Remote Sensing Applications—Case Study: Laser Scanning in Underground Coal Mines

Resources ◽

10.3390/resources9050056 ◽

2020 ◽

Vol 9 (5) ◽

pp. 56 ◽

Cited By ~ 1

Author(s):

Mark Dunn ◽

Peter Reid ◽

John Malos

Keyword(s):

Laser Scanning ◽

Coal Mines ◽

Mining Industry ◽

Electrical Equipment ◽

Regulatory Requirement ◽

Sensing Applications ◽

Mapping System ◽

Underground Coal Mines ◽

Remote Operations

Sensing for equipment location and mapping in explosion risk zones such as underground coal mines is a difficult proposition due to the regulatory requirement for certified protective enclosures to safely house the required complex electrical equipment. This paper provides a case study for the process involved in creating and implementing an optical-grade enclosure for use in these environments. The result of this process has been the creation of ExScan®, a 3D laser mapping system that is providing step-change capability for remote operations and automation in the underground coal mining industry.

Download Full-text