Preliminary communication Spontaneous combustion in coal gangue dumps leads to pollution in the environment and damages ecosystem and human health. Mine operators usually fail to take effective measures against spontaneous combustion because of the inaccurate detection of the location of spontaneous combustion bursts. To address this issue, a control system of spontaneous combustion in coal gan...

In recent, the placement of backfill in underground mines has emerged as a new paradigm in research as it not only improves safety but also allows disposal of byproducts including coal ash. In this regards, this paper addresses the backfilling challenges in limestone mine to prevent sinkhole and subsidence. Limestone mines, generally regarded as being safer than coal and metal mines, have been ...

Availability and uptake of heavy metals (Zn, Cu, Fe, Al, Cr, Ni) by mung bean grown on coal mine spoil was studied. The experiment was carried out as a pot culture experiment using garden soil and different proportion of coal mine spoil. The heavy metals were transported to roots then shoot and were found in traces in the fruits. No toxicity symptom was reported during vegetative as well as rep...

Coal workers' pneumoconiosis, also known as "black lung disease," is an occupational lung disease caused by overexposure to respirable coal mine dust. Inhaled dust leads to inflammation and fibrosis in the lungs, and coal workers' pneumoconiosis can be a debilitating disease. The Federal Coal Mine Health and Safety Act of 1969 (Coal Act),* amended in 1977, established dust limits for U.S. coal ...

The complex and changeful system of coal mine increases the difficulty and importance of its decision-making. Individual decisions sometimes can not bring satisfactory outcomes since the decision need broad knowledge and experience which is not in single field but related to many domains of economics, sociology, logic, etc. To improve the validity and objectivity of decision-making, the group d...

The conventional practice in open cut coal strip mining has been to blast the overburden or coal layers in separate blast events. This is done in order to maximise the benefits from throw blasting and also to limit coal losses. Each blast event usually has a particular design of hole diameters, burdens and spacings, explosive charges and blast timing in order to achieve the required blast outco...

Breakthroughs in the existing state of the art in the detection of abandoned mines have been successfully demonstrated in this U.S. Mine Safety and Health Administration (MSHA) project. The technical problem addressed by this breakthrough is that when an electromagnetic (EM) wave traveling at the speed of light (c) intersects natural media, such as the earth's surface or the recently cut coal f...

In order to further improve the ability of global path planning of coal mine rescue robot in the complex environment, a bacterial foraging algorithm-based polyclonal selection algorithm (BFA-PSA) is proposed. In order to verify the superiority of the BFA-PSA, the proposed algorithm is tested by traveling salesman problem (TSP) and compared with genetic algorithm (GA) and clonal selection algori...

Shuttle cars form a part of the standard equipment employed by the mining Industry In the transportation of coal when using the room-and-plller method for extracting coal from underground seams. These cars are subject to frequent failure, so the problem of assigning shuttle cars to sections of the mine is considered in this paper, with the objective of maximizing expected output. A particularly...

Serious floor heave in gob-side entry retaining (GER) with fully-mechanized gangue backfilling mining affects the transportation and ventilation safety of the mine. A theoretical mechanical model for the floor of gob-backfilled GER was established. The effects of the mechanical properties of floor strata, the granular compaction of backfilling area (BFA), the vertical support of roadside suppor...