SU1404649A1 - Method of mining gently-sloping seams of minerals in unstable parent rock - Google Patents

Abstract

The invention relates to mining. The purpose of the invention is to reduce the cost of maintaining preparatory workings (B) and improving the safety of cleaning work. From B 1, the main direction is carried out by B 2, 3 for the entire length of the column (C) in the inter-column pillars at the border of zones of mutual influence of single B. B, 2, 3, the stocks of the most distant part of I C are processed. At the same time B 4, 5 for the development of part II C. The subsequent parts C are prepared in a similar way to B 6-9. The dimensions of parts C are chosen so that by the time their reserves are processed, the servicing parts B remain stable without the cost of maintaining them. Refinement C is carried out in reverse order with long cleaning faces. Depending on the stability of the host rocks and the depth of development C, the length is conventionally divided into parts, within which the development of reserves C is made for fresh preparatory and rifled B, passed on both sides of C. For example, part I of stocks is extracted at B 2, 3 and excavation shchreki of this part C. At the same time, the time lag between the end of penetration B and the cleaning recess is minimal. The seizure of the last part C is carried out on preparatory B, which is a continuation of the preparatory part B of part I p. 4 Il. i (L

Description

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The invention relates to mining and can be used in the development of flat seams of minerals at great depth with unstable roof rocks.

The aim of the invention is to reduce the cost of maintaining development workings and improving the safety of cleaning operations.

FIG. Figures 1–4 show the stages of mining a column with the proposed development method (direction of fresh air stream; - direction of mineral resource transportation; - direction of the air stream playout).

The method of developing flat seams of minerals in unstable interfering rocks is as follows.

From the mines -1 of the main direction, the mines 2 and 3 are produced for which the reserves of the most successful part of the first pillar are being mined. Simultaneously with the development of this part of the pole, the openings 4 and 5 are prepared for the subsequent part II of the pole. In a similar manner, the subsequent parts of the pillar with workings 6–9 are prepared. The dimensions of the parts of the column are chosen in such a way that by the time their stocks are mined, the production servicing these parts maintain their steady state without any additional costs for maintaining.

Testing of the drying column is reversed. Depending on the stability of the host rocks and the depth of development, the pillar is conventionally divided in length into parts, within which the reserves of the pillar are being mined all the time for fresh preparatory and rifled workings passed on both sides of the excavation column. For example, the excavation of part I is carried out at the openings 2 and 3 and the excavation tracks of this part of the pillar, and the time lag between the completion of the penetration of the said openings and the actual clearing notch is minimal. Testing subsequent parts of the post similar

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Claims (1)

Invention Formula A method of developing flat seams of minerals in unstable adjacency rocks, including preparatory workings and reversing the development of pillars with long cleansing grounds, separating the floor of the excavation column along its length into parts, carrying out workings for the next part of the excavation column during the clearing excavation of the previous parts of the pillar, characterized in that, in order to reduce the cost of maintaining preparatory workings and increase the safety of clean-up work, 5 preparatory workings for each part of the excavation column are carried out over the entire length of the pole in the interstitial pillars at the border of the zones of mutual influence of single workings, in which case the next part of the extraction pole is mined to the preparatory workings of the subsequent part of the excavation pole, and the last part of the pole is led to the preparatory workings, which are a continuation of the workings of the first part of the pole. H five CS) to ic / t CSi CM