Method and device for pneumatic charging of wells with simple and high-density explosives

Abstract

The utility model relates to the mining industry, to methods and devices for obtaining the simplest explosives (HE) from saltpeter, both liquid and high-density components, and petroleum products directly during the loading process. The technical result consists in increasing the efficiency of explosive retention in wells with varying degrees of water content and improving its detonation properties by ensuring finer grinding of solid nitrate particles to a fraction of 0.2–0.3 mm, expanding the technological operating modes (adapting to dry and watered wells), reducing the loading cycle time of the injection chamber, increasing the accuracy of weight dosing of components and reducing the specific consumption of compressed air. The said technical result is achieved by the fact that a method for pneumatically loading a well is proposed, which includes feeding granulated nitrate and petroleum product in a given ratio into a pumping chamber, sequentially exposing the mixture obtained in the pumping chamber to vacuum and increased pressure, and pneumatically transporting the mixture into the well with compressed air through a pumping pipeline and a mixture processing unit. Water is also introduced into the mixture flow as a liquid component in an amount of 2–20% of the mixture's mass. During pneumatic transport, the mixture is passed through a mixture processing unit, ensuring that the nitrate particles are ground to a size of no more than 0.2–0.3 mm. Furthermore, the mixture is pneumatically transported into the well through a charging pipeline up to 350 m long.