Modify Selection
- Geologic conditions and events:
- Faults
- or
- Earthquakes
- or
- Subsidence
- or
- Gas emissions
- or
- Slips
- or
- Landslides
- or
- Clay veins
- Document types:
- Conference papers
Home Links
Results 1 - 10 of 17
-
6/1/2010 - Conference papersThis paper presents a mathematical model based on the conservation of mass principle describing the flow of air (nitrogen and oxygen), methane, and carbon dioxide into and out of a sealed atmosphere and time-dependent changes in gas concentration.
-
7/1/2001 - Conference papersIn Utah, 3-D, full waveform, autonomous microseismic arrays were placed underground and on the surface of a longwall coal mine with overburden exceeding 750 m. Overall 13,000 seismic events, including a magnitude 4.2 event, were detected and located.
-
6/1/2010 - Conference papersThis paper provides an overview of what effects the different exhaust aftertreatment technologies and control strategies available to the mining industry have on the NO2 emissions. Specific focus is given to their effect on the ventilation st...
-
6/1/2009 - Conference papersThis paper aims to examine the effects of porosity and permeability changes of the coal seam on methane emissions in an underground continuous miner section.
-
10/1/2008 - Conference papersThis study presents a numerical investigation of geological discontinues in the coalbed using reservoir simulations of the effects of partings and permeability facies and lithotype changes on the production performances of vertical and horizontal degasi...
-
7/1/2008 - Conference papersThe objective was to determine whether a qualitative but coherent redistribution of velocity, indicating change in location of induced stress, could be imaged as mining occurred in known locations by using a local earthquake tomography software.
-
6/1/2005 - Conference papersThis paper describes the application of a finite difference program to develop a geomechanical model that predicts permeability changes within the rock mass.
-
5/1/2005 - Conference papersNIOSH has initiated a reservoir modeling effort to better understand the interaction of the various geotechnical factors influencing gas flow within and to the underground longwall mining environment. A focus of this modeling effort has been (1) the pre...
-
9/1/2003 - Conference papersA system to collect seismic data at the Stillwater and East Boulder mines was developed to get baseline information on the magnitude and location of mining-induced seismicity to determine if the mines needed multi-channel in-mine monitoring systems.
-
1/1/2000 - Conference papersNIOSH is investigating remote sensing technologies to detect, monitor, and mitigate surface mine hazards that lead to slope failure. A field-portable spectro-polarimetric imager and a stationary interferometric radar device are promising options.
Home Links
Content source: National Institute for Occupational Safety and Health, Mining Program