A METHOD OF CALCULATING THE LENGTH OF THE DEGASIFICATION WELLS IN THE PROCESS OF A PNEUMATIC IMPACT
The method is based on the method of increasing gas pressure in the well, the pressure measurement over time and flow rate flowing gas. Presents a formula designed to calculate the volume and length degasification wells in the cases of the flow of methane from the coal seam. The technique is described and examples of how to calculate volume and length debit and marginal wells in the way of discharge of air from the shaft of the pipeline and discharge gas with a known flow rate. The method of determining the volume of the well is characterized by ease of practical implementation and provide high precision measurements of the volume of the wells, which is especially important in the context of underground mining in the quality control of degassing works to solve problems of mining safety. Implementation of the developed method reduces the cost of measuring operations with high precision of the measurements. The method is designed for monitoring wells used for coal seam degasification.