METHOD OF DRIVING A MINE WORKING IN OUTBURST-PRONE SEAMS WITH UNSTABLE ROOF

摘要

the invention u043eu0442u043du043eu0441u0438u0442u0441u00a0 to mountain industrial, and is u0434u043bu00a0 underground development u0432u044bu0431u0440u043eu0441u043eu043eu043fu0430u0441u043du044bu0445 seams with unstable roof. goal is to improve security u0432u0435u0434u0435u043du0438u00a0 mining and reducing the costs of maintenance of mines by unloading the array around a mountain of blood pressure u0438u00a0 and degassing.project circuit design in accordance with the technology of processing of the u043fu0440u043eu0438u0437u0432u043eu0434u00a0u0442 phased removal of the rock mass. in the first stage, under the protection of sustainable development of sedimentary rock u043fu0440u043eu0432u043eu0434u00a0u0442 or reduced compared with the project u0441u0435u0447u0435u043du0438u00a0. in the area of u0432u043bu0438u00a0u043du0438u00a0 clean-up roof cut in a u0440u0430u0437u0440u0435u0437u043du0443u044e slit. .the width of the cracks are of equal or greater value of horizontal u0441u043cu0435u0449u0435u043du0438u00a0 rock roof for u0432u0440u0435u043cu00a0 processing station. height to exceed the contour of a 0.3 - 0.4 of its width.in the second stage, after the u0441u043du0438u0436u0435u043du0438u00a0 concentration of harmful gases in the atmosphere as a result of u0440u0443u0434u043du0438u0447u043du043eu0439 degassing to allowable bop derived rock mass within the to u043du0442u0443u0440u0430 develop and put her on the grounds of mixed layer. u0434u043bu00a0 u043fu043eu0432u044bu0448u0435u043du0438u00a0 sustainability of unloading cracks for fw fw project circuit provides the putty material such as wood. 1, z. s - lu, 3). (l