SU1129385A2 - Method of weakening the contact between the ore body and setting filling-up material - Google Patents

Abstract

THE WAY IS DECLINED BY THE CONTACT BETWEEN THE FRESH BODY AND THE SOLID STATE PACKAGE BY AUTH. St. No. 1099093, characterized in that, in order to reduce the cost of loosening contact between the ore body and the hardening filling mass, the lipses are made with cavities that are active with the ore body, are filled with a band and with a substance capable of intense gas formation and after solidification) inserts through the wells initiate the process of gassing.

Description

The invention relates to the mining industry and can be used in the underground mining of ore deposits with the laying of the worked-out space hardening. mixes

According to the main author. St. No. 1099093 is known a method of weakening the contact between the ore body and the hardening filling mass, including drilling a well from the open space before its laying, attaching light-ruptured material to the wellheads at the wellheads, producing an ore fracture and setting L.

The disadvantage of this method is the need to transport, place and install equipment in the drift to create fracturing pressure in wells, the need to supply water and isolate well sections, which significantly increases the labor intensity and cost of weakening the contact between the ore and the filling mass.

The purpose of the invention is to reduce the cost of weakening the contact between the ore body and the hardening filling mass.

This goal is achieved by the fact that according to the method of weakening the contact between the ore body and the hardening filling mass, the lenses are made with cavities in contact with the ore body, filled in the cavity with a substance capable of intensive gas generation and after the curing of the bookmark through the wells. .

The drawing shows a section of ore contour and backfill array.

Before placing the bookmark 1 in the drilled space, wells 3 are drilled in the ore massif 2 to be excavated. Wells 3 are drilled to the intersection with the contour of the workings 4 planned for the construction or already constructed. Then, in the places of the wellheads, lenses are installed that have cavities on the side of the ore massif 3, which are filled with substance 5 capable of intensive gas formation. From the side of the backfill array, 1 lenses are bounded by strong convex shells 6.

The lenses are attached to the ore 2 using polymer resins and in so doing

They are hydrated to eliminate the effect of the liquid bookmark 1 on the blowing agent and to prevent the bookmark from getting into the wells 3.

After solidification of the laying 1 and the construction of the development workings 4 in the ore mass 2, the gassing of the substance 5 is initiated through the wells 3 from the workings 4.

As a substance capable of intensive gas formation, can be used, for example, mixed powder of the following composition: 60-70% ammonium perchlorate; 15-20% polymer binder; 10-20% powdered aluminum and other supplements, for example, to reduce the burning rate of gunpowder. Due to the high elastic properties, it is possible to manufacture a piece of gunpowder rigidly bonded to the reflective sheath of 6 lenses. It is advisable to use checkers weighing 0.2-1.0 kg with the addition of an inert flame retardant and, accordingly, gassing rate, to reduce the dynamic effect on the bookmark and the ore mass.

The initiation of the gasification process is carried out through the well 4 mechanically, chemically (by filling the well with a substance) initiating the gas formation process, for example with an oxidizing agent) or by increasing the temperature in the wellhead part 4. Using the powder checkers, the gasification process is initiated using a sweep detector 7 using wires 8, located in the well 3. In this case, the well 3 is preliminarily sealed by installing packers to prevent gas 4 wasp in production downhole. I

The slit shape of the cavity on the contact of ore and bookmark 1, filled with a gasifier 5, as well as a strong reflective shell 6, made of metal, provide the predominant distribution of gas in the direction of the contact surface 9 of ore and bookmark 1. In this case, an intense, close to explosive, gas expansion the development of cracks in the gas-breaking contact of ore 2 and bookmarks.

The diameter of the lenses is taken larger than the diameter of the well 3. Breaking down the ore 2

3t1293854

carried out after the weakening of the surface so as to allow the rupture to bear the contact 9 ore 2 and bookmarks 1. Contact the ore and bookmarks without nugget. Thus, this method of bringing water into wells allows to reduce the labor intensity of the work,. ...

Claims (1)

No. 1099093, characterized in that, in order to reduce the cost of weakening the contact between the ore body and the hardening backfill array, the lenses are filled with cavities in contact with the ore body, fill the cavity with a substance capable of intense gas generation, and after solidification) the bookmarks through the wells are carried out initiation of the gasification process. 112.9385 2 The invention relates to the mining industry and can be used in underground mining of ore deposits with the laying of worked out space hardening. 5 mixtures. . According to the main author. St. No. 1099093, there is a known method of easing contact between an ore body and a hardening backfill array, which includes drilling a well from a mined space before laying it, attaching lenses of easily destructible material at the locations of wellheads, fracturing 15