Search Documents
Search Again
Search Again
Refine Search
Refine Search
-
Main Gate Roof Support Design and Management During Longwall Retreat in the Australian Coal Industry
By Rob Thomas
Main gate roof control during longwall retreat is subject to a significant increase in horizontal stress and risk. The implementation and management of an appropriate roof support design is as a resul
Jan 1, 2006
-
Numerical Analysis of Some Geotechnical Factors Influencing the Application of Longwall Top Coal Caving
By Dao Hong Quang
This paper describes the numerical analysis of some geotechnical factors influencing the application of Longwall Top Coal Caving (LTCC) method. The study was aimed at comparing the differences in stre
Jan 1, 2008
-
Geotechnical Assessment Of Skin Reinforcement In Underground Mines (f05de68f-e8c8-43ca-aab9-9a65452cc10f)
By Jan A. Nemcik
Steel mesh has been used successfully for many years to control friable roof conditions and prevent loose roof and rib material from caving into the roadway. Despite its extensive use, the installati
Jan 1, 2009
-
Mine Seals ? A Rational Base for Design and Construction
By Kot Unrug
Mine seals are necessary in nearly every mine to isolate mined-out areas from the ventilation network. There is a large number of seals in active mines and that number continually increases as the de
Jan 1, 2008
-
Overmining In Kailuan, China Mining Area (d9eb7d79-18c1-4a77-a59a-53706a90764b)
By Jun Han
Coal has been mined in the Kailuan mining area for more than 130 years. The remaining reserves consist of, in large part, coals that would have been considered economically unminable or technically no
Jan 1, 2009
-
Coal Pillar Loading Mechanisms and Progress in Pillar Design
By David Hill
The Australian underground coal mining industry is increasingly operating in an environment that challenges traditional concepts of coal pillar design, against a background of heightened expectations
Jan 1, 2008
-
Alleviation of Rock Bursts by Identifying Burst-Prone Mine Workings
By S. Paul Singh
Rock burst is one of the most serious mining hazards, adversely affecting the safety, economy and productivity of mines. It is a sudden manifestation of the release of strain energy stored in the rock
Jan 1, 2008
-
Analytical Solutions of Hard Roof’s Bending Moment, Deflection, and Energy under Front Abutment Pressure before Periodic Weighting
By Yun Zhang, Haijun Jiang, Shenggen Cao, Chen Wang
The distribution of front abutment pressure is closely related to the force, deformation and energy distribution of hard roof before periodic weighting. So it is necessary to carry out research on the
Jan 1, 2015
-
The Influence of Rock Mass Quality in Controlled Blasting (87c67f30-2368-4c33-b1ba-1ff98b35a5ef)
By Paul Singh
Blasting is an integral part of mining activity and is an inherently destructive process. The quality of the rock mass in which an excavation is being driven has a strong influence on the level of dyn
Jan 1, 2007
-
Seismic Tomography, an Ideal but Immature Tool for Coal Bump Prediction
By Erik Westman
Coal bumps remain one of the industry?s most devastating but least understood phenomena. If changes to the internal conditions of the rock mass could be observed there is hope that bumps could be fo
Jan 1, 2008
-
25 Years of Ground Control Developments, Practices, and Issues in Australia
By Bruce Hebblewhite
This paper recognises the 25th year of the Morgantown International Ground Control in Mining Conference, by offering a twenty five year review of ground control in the Australian mining industry ? pri
Jan 1, 2006
-
Relationship between Mining Subsidence and Mining Depth in Strip Pillar Mining
By Wenbing Guo
Strip pillar mining method is one of the most important techniques for mining subsidence control in China. Mining depth is one of the most important factors that affect subsidence in strip pillar mi
Jan 1, 2007
-
Numerical Simulation of Reinforced Concrete Mine Seal Subjected to Explosion Loading
By Khaled Morsy
The tragic incidents at Sago and Darby coal mines in 2006 pointed out the need for stronger seals to resist the blast effects of violent gob explosions. Mine Safety and Health Administration (MSHA) ha
Jan 1, 2008
-
Coal Strength Variation by Lithotype for High-Volatile a Bituminous Coal in the Central Appalachian Basin
By John A. Rusnak
"This paper discusses the variation of coal strength based on the megascopic coal lithotypes for Central Appalachian high-volatile A coal beds. The composition of coal beds is complex and variable, de
Jan 1, 2017
-
Study about the Dynamic Influences of Longwall Mining in the US on Surface Structures
By Karsten Zimmermann
The paper presents a study on the influence of face retreat rate in longwall coal mining on surface subsidence. It shows possibilities to influence dynamic ground movement by using a specific and con
Jan 1, 2007
-
Characteristic Acoustic Emission Sequences of Rock Samples Under Uniaxial Loading
By Nic Slatalla
Acoustic emission monitoring techniques are a powerful tool for analysing deformation behaviour and fracture characteristics of rock samples under uniaxial loading. Uniaxial compression tests wer
Jan 1, 2008
-
Correlation of Sonic Travel Time to the Uniaxial Compressive Strength of U.S. Coal Measure Rocks
By David Oyler
Sonic travel time logging of exploration boreholes is routinely used in Australia to obtain estimates of coal mine roof rock strength. Because sonic velocity logs are relatively inexpensive and easy
Jan 1, 2008
-
Dynamic Failure in Deep Coal: Recent Trends and a Path Forward
By Jeffrey Whyatt
Mining coal in deep, gassy strata is difficult, particularly in deep mines of the west. Dynamic failure (bumps, bounces, etc.) is commonplace, particularly where strong sandstone strata are encountere
Jan 1, 2008
-
Safety: A Review and Evaluation of Current Retreat Mining Practices in Kentucky
By John E. Feddock
Retreat mining plays an important role in the coal production within Kentucky and the Appalachian Coal Basin. In Kentucky, the majority of retreat mining is performed in the Eastern coal field. Howe
Jan 1, 2006
-
The Development of Active Cable Anchors for Primary Supports in Coal Mines
By Scott A. Shapkoff
High strength cable strand supports are predominately used as a supplemental means of ground control in longwall and development operations in the U.S. The advantages of cable strand supports have bee
Jan 1, 2006