COLLAPSIBLE DEVICE FOR HOLE DRILLING AT LEVEL DEVELOPMENT

FIELD: mining. ^ SUBSTANCE: collapsible device contains support system, which includes tubular expansion shell bolts and drilling system, consisting of a spout guide, a jackleg with mechanical gauge and detachable drilling chuck, joining in operating position into a full design by fixing the spout guide of drilling system by means of expansion shell bolts of the support system. Support system is designed as two sets of expansion shell bolts, mounted in the entry horizontally in vertical plane, parallel to roadhead, at the distance from each other equal to the spout guide's length deducting total length of support for jackleg and drill-chuck, at the same time tubular expansion shell bolts of support system consist of two snugly fitted tubular elements with the span length of 0.75, with the holes coaxilly drilled throughout their length. One of the tubular elements (passive) is arrow-headed at one end, and the second one (active) has a screw nut and a jack screw with square thread. Spoute guide has got grooves throughout the length of chute bottom centre line, which diametre is equal to the diametre of holes in tubular elements of expansion shell bolts in support system, drilled with a pitch equal to 0.2 feeding air ing attachment course and is provided with the outer part of the bottom of the guide trough the two detachable swivel coupling for mobile its connection to the spacer bars The jackleg with mechanical gauge and drilling chuck are designed as a bushing for spout guide. Jackleg support has a female cone at both ends, and the drilling chuck is mounted at the upper side with detachable spring coupling with the core diametre equal to the diametre of drilling stem. ^ EFFECT: lowering costs for drilling operations, comfort and drillers` safe working conditions while maintaining a high level of drilling performance. ^ 3 cl, 9 dwg Изобретение относится к горному делу, а именно к проходке горизонтальных горных выработок буровзрывным методом при подземной разработке месторождений полезных ископаемых и строительстве подземных сооружений. Сборно-разборное устройство содержит опорную систему, включающую в себя трубчатые распорные штанги и буровую систему, состоящую из направляющего желоба, ручного перфоратора с пневмоподдержкой с передвижным упором для нее и съемный буродержатель, соединяемые в рабочем положении в единую конструкцию путем закрепления направляющего желоба буровой системы на распорных штангах опорной системы. Опорная система выполнена в виде двух