Coal mines opting for longwall mining or one of its variations rely on the main and tail gates for production of coal from a panel. Therefore stability of these entries or crosscuts is crucial in coal mining operations. Failure of roof/strata may be fatal and may lead to a loss of property, and delayed coal production. Failure of the gates may be a function of many factors including the mining...
Flood constitutes one of the world’s most serious environmental hazards. Flood bunds are the earthen hydraulic structures which are constructed along the River to control the Flood water to avoid damages to the infrastructure, crops, livestock and also loss of human lives. Pakistan which lies in the Indus Basin has been facing severe threats and losses from the floods since histories. About...
This paper investigates the experimental study to develop fluidizing behavior of CaCO3 and coal micro size particles in a fluidized bed. The tests were carried out at natural conditions. The grain size distributions of the materials were conducted with the help of sieve shaker.The objective of the study to analyze the optimum superficial velocity versus pressure drop and bed height using air...
Abstract
Limestone represents the main raw material for cement. In this study, six natural limestone’s samples from different geological beds of Khyber Karimabad Upper Hunza Valley, Gilgitbaltistan were chemically and mineralogical investigated as suitable raw material. These samples were investigated with Thin Section, X-ray diffraction (XRD), Scanning electron microscopy coupled with...
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Rehanul Haq Siddiqui1, Syed Mubasher Aftab1 and Asif Hanif Chaudhry2
1: Balochistan University of Information Technology, Engineering and Management Sciences, Quetta, Pakistan,
2: Geoscience Advance Research Laboratories Geological Survey of Pakistan, Islamabad, Pakistan
Abstract
Subduction related east-west trending Chagai Arc, located in the western part of Pakistan. This arc is the...
