A compact layout method of underground coal gangue sorting chamber group

Abstract

The invention discloses a compact layout method for underground coal gangue sorting chamber groups, which is suitable for use in coal mines. Firstly, based on the type of in-situ stress field in the mine and the trend of the dominant joints and fissures, determine the reasonable layout of the main chamber in the coal gangue sorting chamber group, that is, arrange the main chamber as far away as possible from faults, collapsed columns and other geological structures and the nature of surrounding rocks In a relatively stable area, the axial direction of the main functional chambers is arranged perpendicular to the trend of the dominant joint fissures, and the main chambers are arranged parallel to each other; the auxiliary chambers and the main chambers are arranged along the same axis; the communication between the two main chambers The chamber and the two main chambers are vertically arranged; determine the reasonable distance between the main chamber and the adjacent lanes, and carry out gradual transition treatment for the lanes with non-contour heights in the gangue sorting chamber group. The steps are simple and can effectively reduce the difficulty of surrounding rock control, which is beneficial to reduce the amount of coal pressing, the amount of gangue production and the amount of roadway excavation, and weaken the interaction between the coal preparation system and other underground production activities.

Description

technical field [0001] The invention relates to a chamber group layout method, which is especially suitable for a compact layout method of underground coal gangue sorting chamber groups. Background technique [0002] At present, the mining area in the central and eastern part of my country has entered the stage of deep mining, and there are more than 50 mines with a mining depth of more than 1,000 meters. However, deep coal mines need to excavate a large number of rock roadways to meet the needs of the mine production system, surrounding rock stability control and safe pressure relief mining. The huge environmental pressure brought by the ground discharge has become a bottleneck problem that restricts the safe and efficient production of deep mines and the coordination of the mining environment. Underground coal gangue sorting is a coal preparation technology development direction to adapt to the development of gangue filling coal mining technology, which plays an important r...

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Problems solved by technology

[0002] At present, the mining area in the central and eastern part of my country has entered the stage of deep mining, and there are more than 50 mines with a mining depth of more than 1,000 meters. However, deep coal mines need to excavate a large number of rock roadways to meet the needs of the mine production system, surrounding rock stability control and safe pressure relief mining. The huge environmental pressure brought by ground discharge has become a bottleneck problem that restricts the safe and efficient production of deep mines and the coordination of the environment in mining areas

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