Digging activities are considered the largest cause of damage to underground cables and pipelines. Contractors can reduce the risk through detection, which will cost time and thus money. In the Netherlands, maps are the prime source of information on the location of cables/pipelines and detection time strongly depends on whether maps indicate the presence of cables and pipelines. Poor quality m...

Metal price is one of the most important parameters in the calculation of cut- off grade. The cut- off grade has the main role in determination of mine layout. Mine layout actuates mineable reserve, mine life and economic profitability. Not considering the uncertainty in metal prices can lead to a non-optimal layout. In this paper optimum underground mine layout is determined by expected utilit...

The major technical obstacle to the signing of nuclear test ban treaties is the issue of verifying compliance. Since the banning of atmospheric and oceanic testing (Limited Test Ban Treaty of 1963) pushed testing underground, seismic monitoring has been one of the most important technologies available for monitoring compliance with test ban treaties. The goal of these treaties is to progressive...

The effective production of high-quality anthracite has attracted increasing global attention. Based on the coal occurrence in Yongxia Mining Area and mining conditions of a coalface in Xinqiao Coal Mine, we proposed a systematic study on the technical support for the production of high-quality anthracite. Six key steps were explored, including coal falling at the coalface, transport, undergrou...

The study aimed at determination of the optimum conditions for high yielding and high quality of Valeriana officinalis L. production by selecting the best variety and plantation establishment method. A higher content of active substances but lower yields of underground parts of plants were obtained in a thin-rooted variety (‘Polka’) culture, whereas an adverse tendency was observed in a thick-r...

Underground construction is widely adopted in urban area but sometimes the construction might cause severely failure. In this paper, successful interpretation of instrument data is addressed and several examples are demonstrated since geotechnical monitoring is thought to be an effective tool to avoid failure. Further, the failure may also be caused by misinterpretation of responsibilities of p...

The Gafsa mining basin district in Southwestern Tunisia is one of the most important producers of phosphate in the world. The exploitation of this district started at the beginning of the twentieth century a few years after the first discovery of this valuable resource. The over-exploitation of groundwater to wash the phosphate caused water-level decline in the main aquifers and the corollaries...