METHOD OF EXPLOSIVE DEVICES DELIVERY BY MEANS OF HORIZONTAL DIRECTIONAL DRILLING DEVICE AND DEVICE FOR ITS IMPLEMENTATION Russian patent published in 2019 - IPC F42D3/02 E04G23/08 E02F5/18 

FIELD: mining.

SUBSTANCE: invention is aimed at increasing efficiency of the method of delivering explosive devices (1) by means of a horizontal directional drilling (2) installation and a device for its implementation in difficult drilling conditions and expansion of its application area. With the help of horizontal directional drilling device by means of pilot projectile (3) construction of horizontally directed well (4) is performed for exploded object (5) with outlet of the latter to day surface (6), drilling operations due to safe shelters (7), delivery of explosive device (1) to exploded object (5) during back pulling by means of drill string (8) consisting of drill pipes (9), expander (10), swivel (22) and disconnector (14) for disconnection of explosive device (1). Delivery of explosive device (1) to blasted object (5) is carried out in protective cover (11) with steel head (12). Swivel (22) is installed between expander (10) and protective cover (11). Disconnector (14) for disconnection of explosive device (1) is performed with forced opening without stopping the reverse pulling process at the required blasting point under explosive object (5) and placed inside protective cover (11), directly connecting to explosive device (1). Protective cover (11) is pre-assembled at the wellhead at the point of drill string (8) exit to day surface (6) behind safe cover (7) and explosive device (1) is installed, which is freely installed inside protective cover (11).

EFFECT: higher efficiency of method of explosive devices delivery by means of installation of horizontal directed drilling in complex drilling conditions and expansion of its application area.

4 cl, 6 dwg