| 摘要 |
FIELD: mining art, applicable for charging of deep holes at blasting in mining art and in construction. ^ SUBSTANCE: the method consists in production of air gaps with the aid of an elastic deep-hole gate made of a rubber-containing material, which in a deformed state and bound by an additional rope is lowered on the main rope into the deep hole to a preset depth that is adjusted with the aid of the marks made on the main rope, then the elastic well gate is freed of the ropes with the aid of one of the ends of the main rope bound to the additional rope. After that the ropes are taken out of the deep hole, and a thickener is placed on the elastic well gate, the live primer and a portion of the charge are placed on the thickener. Then, the next elastic deep-hole gate is bound to the same main rope in the deformed state, lowered into the deep-hole to a preset depth and all operations are repeated in the same sequence up to the feasibility studied quantity of elastic gates in the deep hole. ^ EFFECT: reduced labor content and cost of deep-hole charging by distributed charges, reduced specific cost of the gate of the ultimate cost of the installed charge, simplified process of charge distribution in a deep hole and salvaging of the used rubber-containing materials. ^ 3 dwg |
