Dang V. The substantiation of main parameters of the underground exploitation for the Quang Ninh coal fields (Vietnam).

There are mining technological schemes for the exploitation of Khe Cham deposit. There are rational variants and parameters of the opening, preparation and mining system are determined for the exploitation of Quang Ninh coal fields. The research methods: expert estimate, experimental plan, statistical treatment and economic-mathematical modeling with a computerisation. The theoretical results & news: for the 1-st time, the choice of a criteria of optimum is substantiated for complicated geological conditions of Vietnam coal fields. The integral indexes of a expedience are offered for the choice of rational mining schemes. It is necessary to substantiate a two-stage estimation of the accepted decision. Practical value:technicality advisable variants and parameters of technological schemes are determined for the coal seams exploitation in the Quang Ninh. The recommendations of perspective decisions for Vietnam coal field's exploitation have been suggested. There's using sphere for Vietnam mining industry