SU1320435A1 - Method of supporting mine workings - Google Patents

Abstract

FIELD OF THE INVENTION The invention relates to mining and makes it possible to increase the water resistance of hardened rocks. In the bottom of the working area, in the plane of its cross section, a drill is drilled with depth beyond the limits of the onon pressure zone I radially directed charging wells (C) 2 alternating with additional C 3. perpendicular to and. the longitudinal axis, on the contour of the zone of onorny ropHoi O pressure, is placed in C 2 charges of exploding air. By blasting charges form iiic.ih 7 between C 2 and 3. Then, injection is carried out into the slurry solution in slot 7 and C 2. The injection process is monitored by leaving the solution from C 3. The closed slot 7 in The solid and solidified mortar creates an impermeable shielding zone around the excavation. 2 Il. g WITH with to about 4 with SP Fig.

Description

The invention relates to mining, and HjMenHo to methods of securing mine workings in water-flooded conditions with anchors, followed by injection into mortar solutions into surrounding rocks.

The aim of the invention is to increase the water-permeability of hardened rocks.

FIG. 1 shows the scheme of the mounting operations and the location of the anchors along the mine; in fig. 2 is a section A-A in FIG. I.

The way things are; 1 are as follows.

At the bottom of the working area in the plane of its cross section, a drill is drilled out beyond the limits of zone 1 of the reference rock pressure J5 radially 1 charge wells 2, alternating with additional wells 3.

the tori 8 into the wells 2 and the slot 7. The injection process is monitored by the solution leaving the well 3.

With this method, filling the closed slot in the array and hardening the mortar solution creates a waterproof screening zone that prevents water from seeping into the mine. The preservation of this zone is ensured by the placement on the contour of the zone of the reference rock pressure.

Claims (1)

Invention Formula A method of securing mine workings, including the drilling of charge wells alternating with additional wells, placing explosive charges in charge wells, creating a gap between the wells by blasting valves in charge wells 2 on the 20 c loop of charge and injecting zone 1 of the reference rock pressure, the spreading solution to create shielded cumulative charges of explosive 5, limited along the length of the well plugs 6, and blasting of the charging zone around the excavation, characterized in that, in order to increase the water resistance of the hardened rocks, squads. The effect of blasting of cumulative charges of - 25 gins when drilling is placed radially It provides for limiting the zone of impact of shock waves to a plane perpendicular to the longitudinal axes of the wells with anchors and located on the contour of the zone 1 of the reference rock pressure. Concentration relative to the contour of the excavation with the deepening beyond the zone of the reference rock pressure, and in additional wells establish tubular explosive anchors, while the gap between the wells shock waves in the said plane of the drive-30 form after the installation of the explosion-proof This leads to the formation of a slit 7 connecting the anklers in a plane perpendicular to their adjacent wells. Then, a nag-longitudinal axis is produced on the contour of the reference zone. net in the slurry through injection-rock pressure. the tori 8 into the wells 2 and the slot 7. The injection process is monitored by the solution leaving the well 3. With this method, filling the closed slot in the array and hardening the mortar solution creates a waterproof screening zone that prevents water from seeping into the mine. The preservation of this zone is ensured by the placement on the contour of the zone of the reference rock pressure. Invention Formula A method of securing mine workings, including the drilling of charge wells alternating with additional wells, placing explosive charges in charge wells, creating a gap between the wells by blasting charges, and injecting the slit and rock into the drilling solution to create z charges and injection into the slit and rock in the slurry solution to create a screening around the excavation, characterized in that, in order to increase the water tightness of the hardened rocks, the wells are drilled during drilling relative to the contour of the excavation with the deepening beyond the zone of the reference rock pressure, and in additional wells establish tubular explosive anchors, while the gap between the wells form after installation explosive