METHOD FOR PREDICTING RISK gas-dynamic phenomena in the rock mass AND DEVICE FOR IMPLEMENTATION

摘要

1. A method of predicting danger of gas dynamic effects in the rock mass, comprising a rotary drilling exploratory wells in the rock mass, a separate measurement of the amount of gas and culm released from the drilling of wells, estimate well depth, construction profiles gas quantity and culm depending on well depth and the time for which determine the type of hazard gas-dynamic phenomena, characterized in that each drilling exploratory wells is performed with pre-sealing of the mouth, measurable renie gas amount and culm carried out with hermetic sealing of measuring channels continuously and simultaneously with drilling wells while leaving the drilling rod into the borehole, wherein the assessment of well depth is carried out by continuous measurement of its current depth, the profiles of quantity of gas and culm depending on the depth of the borehole determine the average values ​​of and standard deviations of the amount of gas and culm, and the intervals of the well depth, where the specific amount of culm greater mean values ​​for mean-value rejected Ia judge the presence of zones of high overburden pressure at the same intervals borehole depth and the intervals of depth of the well where the specific amount of gas over the average value standard deviation judge the presence of zones of increased gas content at the same intervals of well depth, by integrating the profile of the amount of gas in depending on the depth of the borehole determine the average culm gas content in place of the exploratory well, and when the value of the average gas content exceeds a threshold lawn