Report on the Design Options of Landwall Mining Method (Doc)

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REPORT ON THE DESIGN OPTIONS OF LANDWALL MINING METHODPART 1: RISKS IN LANDWALL MINNGAccidental collapse of the walls in underground miningThe mining options presented have got a myriad of challenges such as risk factors that must beanalyzed during establishment of standard operating procedures. Admittedly, risks associatedwith each mining option have unique characteristics such as accidental collapse of the roof inareas where reinforcements are not done properly. The cross deep shaft method is oftenassociated with this kind of risk as the shafts are sunk relatively deeper. Due to the overbearingweight of the earth movers and the vibration of the machines, areas prone to earth quakes may betriggered off. The geologists must therefore competently analyze the data from the area usingmodern sophisticated tools and software. The identified hotspots must therefore be avoided at allcosts.Workplace safety concernsImproper and insufficient training of all workers can also be a potential source of problems. Theinexperienced crane operators and drivers may cause damage to people and properties as they tryto navigate the terrain during mining. The entire system of mining must therefore take intoconsideration the complex routing of the machinery and equipment to minimize on backtrackingand unnecessary collisions (Singh & Unver, no year).Some mines have weaker rocks which could cave in during operation. It is therefore oftenrequired that once an area is depleted, the remnants must be cleared off. The belt transect methodwill come in handy in this case. The wall destabilizers are therefore useful for this purpose.Notably, the proposed designs aim at maximizing the extraction potential while at the samebeing cognizant of the fact that safety and costs are equally critical aspects in the operation.The above mining design options have got both merits and limitations. The belt transect methodis the fastest and perhaps the cheapest to establish and run. The area identified is worked on in arectangular manner before collapsing the weaker walls to give way to new region as movementis both traverse and longitudinal.Methane gas emissionsIn the course of miningAcid mine drainageRespiratory problemsSocial destruction by the explosivesSpecifically, proper planning beforehand on the above-mentioned aspects is very critical. Thebest strategy is selected after a thorough evaluation of the available options. Different modelshave been used. In our case, a simple yet effective model is used to ascertain whether theminimum criteria are met.
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