Risk evaluation method of overburden bed-separation water disaster in mining area

Abstract

The present invention relates to the field of prevention of a water disaster in coal mining, and discloses a risk evaluation method of an overburden bed-separation water disaster in a mining area. In the prior art, prevention of the bed-separation water disaster is achieved mainly by making bed-separation water “cut-off holes” and “diversion holes” underground; however, the degree of a roof bed-separation water disaster in the mining area has not yet been qualitatively or quantitatively evaluated and analyzed, resulting in blindness of the prevention of the bed-separation water disaster. In order to solve this problem, the present invention provides a risk evaluation method of an overburden bed-separation water disaster in a mining area, which includes the following steps: S1. collecting geological information about strata in the mining area; S2. calculating the height of a water-conducting fissure zone in the mining area; S3. based on a composite beam principle, determining a bed separation development position in strata above the water-conducting fissure zone; and S4. calculating a bed-separation water inrush coefficient, and zoning the mining area based on a risk of an overburden bed-separation water disaster. The present invention can predict and evaluate a risk of an overburden bed-separation water disaster in the mining area in advance, thus providing a scientific basis for designing a scheme to prevent the bed-separation water disaster, and guaranteeing coal mining safety.

Dependencies are inferred from the claim text.