This study systematically investigates the overburden movement and strata behavior at a fully-mechanized top coal caving (FMTCC) face in a thick coal seam in a loess-covered gullied region by field measurement and theoretical analysis. A comparative analysis was performed to examine how the attitude of surface gullies and the structure of overburden affect face support resistance. The character...

Landslide induced by underground mining is the main type of geological disaster in Guizhou Province. The spatial position mined-out area key factor affecting deformation evolution landslides. Three typical mining-induced slopes western Province are selected to establish engineering model. orthogonal experimental design carried out with relative slope shoulder (PM) and height (SH) as variables, ...

s: Joint Conference of 26th Annual American Society of Mining and Reclamation and 11th Billings Land Reclamation Symposium, May 30-June 5, 2009, Billings, MT. p 12, 2009 The Office of Surface Mining Reclamation and Enforcement and the West Virginia Department of Environmental Protection reviewed the costs and benefits of two different types of data gathering by generating cross sections of larg...

At present, the country's coal industry pays special attention to open-pit mining, because of its higher efficiency and profitability. According various surveys, currently share mining is 50 - 65%, it will increase 80 85% in future. The development an accompanied by production scale increase, open pits depth increases complexity conditions main technological equipment operation increases. With ...

The phenomenon of toppling deformation and failure is common in slopes with anti-dip structures, especially soft metamorphic rock slopes. This paper aims to explore the instability mechanism layered landslides. Taking slope a mining area southern Qinling Mountains China as geological prototype, large-scale centrifuge model test numerical simulation based on combined finite discrete element meth...

Let rm and rM be the least and greatest finite boundary slopes of a hyperbolic knot K in S . We show that any cyclic surgery slopes of K must lie in the interval (rm − 1/2, rM + 1/2). AMS Classification 57M25; 57M27

Abstract Ground failure on natural and engineered rock slopes is a geological hazard with potentially fatal consequences to the public or personnel in mining industry. Aerial reconnaissance use of unmanned aerial vehicles (UAV) rapidly becoming standard practice for geotechnical engineering site investigations, enabling faster safer data collection slopes, which are often difficult access foot....

Open-cut coal mining in Queensland results in the formation of extensive saline overburden spoil-piles with steep slopes at the angle of repose (approximately 75% or 37o). These spoil-piles are generally found in multiple rows, several kilometers in length and heights of up to 50 or 60 m above the original landscape. They are highly dispersive and erodible. Legislation demands that these spoil ...

Stable high slopes in mines are a prerequisite for sustained and efficient mining operations. In order to analyze the stability of under different working conditions, slope mine Chongqing was taken as research object. The limit equilibrium method Slide software used conduct analysis three conditions: natural, blast force, seismic force. corresponding coefficients were obtained. Then, rainfall, ...