SU1234629A1 - Method of caving-in inter-chamber pillars - Google Patents

Description

I

The invention relates to mining and may be used in the underground mining of ore deposits.

The purpose of the invention is to reduce losses and dilution of ore and the cost of its transportation.

FIG. 1 shows the block being worked out, the position before the collapse of the inner chamber pillars, a longitudinal section; in fig. 2 shows section A-A in FIG. 1 (horizon of ore production and transportation to the ore pass, located adjacent to the chambers and intercamera pillars); in fig. 3 and 4 - section BB in FIG. 1 (the position of the first and second stages of the collapse of interchamber pillars).

The collapse between the chamber pillars of the proposed method are as follows.

Ore passing 1, then connect the lines 2 and transport 3 mines. After that, the loading workings are passed, then drilling 4. The ore massif of the chambers and pillars are drilled by deep wells 5. Then the cutting off rising steps take place, the ore is crushed in the chambers 6. After the ore is released from the chambers, the inter-chamber pillars 7 begin to collapse in two stages. V. first stage hoop ±

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inter-chamber pillars 8 on the border of the block adjacent to the ore pass are sewed. Repulsed ore is placed along the border of the block in an adjacent open chamber. In the second stage, the ore massif 9 between chamber pillars in the direction of the formed developed space 10 from the first stage collapses, and the broken ore is placed in it at the same time.

0 The volume of ore recovered in the first stage is assumed to be equal to the volume for placing the ore recoverable in a loosened state from the second stage. Thus completely filled

15 The developed area from the chambers and between the inner pillars is broken ore at the boundary of the block adjacent to the ore lane, where the ore is transported. Beating off the ore in inter-chamber complexes from the first stage is predominantly located in adjacent chambers. Pounding ore in between chamber pillars from the second stage is mainly located in the developed space from the first stage of collapse.

between the chamber pillars, which makes it possible to redistribute the volume of ore being beaten off from the chamber pillars in the developed space of the blocks and reduce losses and sosubozhby, as well as reduce the length of ore transportation on the output horizon.

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Editor I. Casard

Compiled by V. Friauf Tehred L. Serdyukova

Order 2963/41 Circulation 470 Subscription

VNIIPI USSR State Committee

for inventions and discoveries PZOZZ, Moscow, Zh-35, Raushsk nab. 4/5

Production and printing company, Uzhgorod, Projecto st., 4

Proof. With. Shekmar

Claims (1)

METHOD OF DESTRUCTION OF MEVDUCHAMBER TARGETS, including the formation of a bottom, carrying out transparent and drilling workings and ore discharge at the block boundary, drilling ore masses with deep wells, breaking ore into open mined-out space of worked out chambers, production and delivery of ore, which are distinguished by the fact that in order to reduce losses and dilution of ore and its transportation costs, first the sections of interchamber pillars are blasted along the border of the block adjacent to the ore discharge, and p row in a volume equal to the volume of ore neotbityh portions interchamber pillars loosened, and then the remaining portions discourage interchamber pillars formed on the goaf and thus form a pile of broken ore along the transport generation adjacent the ore pass. SU, „, 1234629 1 1234629 1