Our underground health and safety, productivity and environment initiatives include strengthening ventilation and gas management technology, minimising risks from fires and explosions, advancing emergency response technologies, reducing operating costs and improving reliability of subsidence predictions.
Coal Burst (9 Reports)
|Author: Winton Gale, Gaetano Venticinque and Mahdi Zoorabadi | SCT Operations |
Rocks in the ground are subject to a range of stresses. The stresses are defined on the basis of the three principle stresses (σ1,2,3) and shear stresses (τ). In coal mines the rock and coal are subject to fracture (failure) on a regular basis during development driveage and .... read more
|Author: Ian Gray, Jeff Wood, Tim Gibbons, Xiaoli Zhao | Sigra |
Bursts are events that expel material at velocity at the time of ejection. This is usually coal but is sometimes rock. Unlike falls where the velocity is gained through gravitational acceleration, the sources of energy that drive the material outwards are either strain energy of the rock or .... read more
|Author: Hamid Roshan and Hossein Masoumi | University of New South Wales and Monash University |
The aim of this project is to study the effect of fluid withdrawal on stress distribution in coal. Recent advances in acoustic log analysis and analytical models as well as field and laboratory data are used to evaluate the stress redistribution caused by fluid drainage from a borehole.
.... read more
|Author: Winton Gale | SCT Operations |
Rock and coal fracturing is common about roadways, particularly under the influence of elevated stresses, either tectonic or related to mining abutment stress. Shear fracture is very common, however, it is very uncommon that the coal is propelled from the face or ribs as a result of fracture .... read more
|Author: Xun Luo, Joey Duan, Ludovic Ricard, Matt van de Werken | CSIRO |
In this project, the feasibility of using distributed optic fiber sensing (DOFS) technique was investigated for microseismic monitoring in coal mining. The investigation involved in theory study, laboratory tests and a mine site experiment.
Results from the laboratory experiments have .... read more
|Author: Xun Luo, Joey Duan, Matt van de Werken | CSIRO |
Coal burst is a violent collapse of the coal wall or roof in development, roadways and at the longwall face in underground coal mines. Because it occurs suddenly, with no or very little warning, coal burst is particularly dangerous to nearby mine personnel, mining equipment and infrastructure. .... read more
|Author: Baotang Shen, Bongani Dlamini, Lu Chen, Yi Duan, Xun Luo,Matt Van de Werken, Onur Vardar, Ismet Canbulat | CSIRO, The University of New South Wales |
Stress state and geotechnical conditions often change significantly near major geological structures which is the cause of most major mine instabilities and/or safety hazards including coal burst, roof falls, water inrush, gas outburst etc. This project aimed to develop an integrated method of .... read more
|Author: Ian Gray | Sigra |
This report describes the measurement of coal (and rock) properties using core in laboratory tests where the axial and radial (confining) stresses and the fluid pressures are varied. The results derived from this work show quite different material behaviour to those generally considered to .... read more
|Author: Jan Nemcik, Gaetano Venticinque, Shivakuma Karekal | The University of Wollongong |
The success of mining operations is heavily dependent upon controlling the fractured ground especially in coal mines where complex sedimentary strata exist. In nature, mechanisms of rock fracture are a dynamic phenomenon that up to now has not been fully understood nor computationally modelled .... read more