SU1634784A1 - Method for sealing off mine workings - Google Patents

Abstract

The invention relates to methods for isolating underground voids and mine workings from air shock waves generated, for example, during massive rock breaks in cleaning chambers. The goal is to increase the safety of work in cleaning chambers by changing the movement of the air shock wave and directing it to an artificially created screen. . An uprising passes above the mine working, communicating with the spent cleaning chamber. In the roof of the development of the drill t fans explosive holes. Bore-hole fans are drilled at a distance equal to the line of least resistance in the excavation section between the rebel and the camera in the direction from the rebel to the camera. Boreholes charge explosives. Breed discourage layers blasting holes. An inclined roof is formed in the development by blasting fans with a decrease in the length of holes in each successive fan by the magnitude of the line of least resistance, and an inclined dead-end gap is formed between the formed inclined roof and the rock core, which is formed during the blasting process of 3 holes. io (/

Description

This invention relates to a miner; industry, in particular to safety equipment, and can be used to isolate voids and mine workings from air shock waves.

The purpose of the invention is to increase the safety of work in the cleaning chambers by changing the motion of the air shock wave and directing it to an artificially created screen.

Fig 1 shows a chamber with adjoining production, a vertical section; FIG. 2 shows the frontal part of the excavation with a drill hole drilled out of it and a vertical contour of an inclined slot; Fig 3 - a plan of production, adjacent to the camera

The method of localization of mine workings is carried out as follows.

The cleaning space of chamber 1 is reported through generation 2 with the horizon on which the mining is being conducted. In excavation 2 to the height of its two sections, sectional rising revolving 3 sectionally passes. When penetrating rising 3, the falling rock is left on the excavation soil 2 and, in this case, the upper part of the ore is divided. form a rock core 4 of the purpose 5, enclosed between the end wall of the rising 3 and the cleaning chamber 1, is drilled with several fans of 6 holes or holes in the direction from rising to the chamber. Each fan fi drilled in the ore consists of drill holes 7 fans fi holes followed by the previous one

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p and watt HI pai t t and equal to the line of least resistance (LNS) LENGTH of splines 7 decrease from the previous to the last fan on the LNS and during blasting create an inclined roof of the mine and incline t peaks th gap between the broken rock (rock core 4) and having formed an inclined roof, the charge of boreholes 7 is discharged from generation 2, shielding the front of the chamber to the chamber. A block of Vera 6 rock is loaded successively in the direction from rising 3 to the chamber 1. LAYER breaking short allowance

As a result of the explosion, an inclined jumper 8 is formed which overlaps the horizontal production 2 from the cleaning chamber 1 with an edezhu jumper 8 and a ceiling 5 to make out the specified inclined slit 9 When the roof of the cleaning chamber 1 self-destructs, an air shock wave forms along the inclined NEP. 9 and bumps into the wall - rising screen 3 Having reflected from the rising wall 3, the wave changes the direction of its movement, returns to chamber 1 and reflects from its opposite wall. Returning from the shock air the wave falls on the opposite of the NUI i tenk camera 1 under the glom and out

pressed from it at the same angle. Chamber I will occur many times. the fall and reflection of the wave in the penibrare of which it completely loses em (my energy

and pressure

Claims (1)

Invention Formula A method for localizing mine workings, including carrying out an uprising over a mine and building a native drill in the roof of a mine to produce fans of blast holes by charging the ShSTU ditch and layer-by-layer of rock formations with holes, in order to increase the safety of work in the cleaning chambers an account of the change in IBH of the shock wave airway and its direction to an artificially constructed screen, drilling in the roof of the development of each subsequent fan of holes is carried out on 0 standing from the previous one equal to the line of least resistance in the area between the ascending and the camera in the direction from the ascending to the camera, in the development they form an inclined roof by drilling and blasting fans with a decrease in the length of the drill holes in each subsequent fan by the value of the line of least resistance and image of the ZU At the same time, there is a sloped dead-end gap between. decorated sloped roof you, working and rock core five  -a.cha 5c and / on Zog j g; Ws4T% L / 4 / W v W W g tLI