Double-draw shaft-inclined roadway combined layered construction method for high and large chamber

Abstract

The invention discloses a double-draw shaft-inclined roadway combined layered construction method for a high and large chamber. The method comprises the following steps that the length, width and height of the chamber and the arch height of the chamber are determined; the layered height of the chamber is determined; a lower straight roadway is constructed; a deslagging level roadway is constructed; a lower curved roadway is constructed; an uphill inclined roadway is constructed; a rock drilling platform is constructed; an upper straight roadway is constructed; a deslagging draw shaft is constructed; an arch crown is expanded and brushed on the rock drilling platform and the upper straight roadway until the arch crown of the chamber is excavated and supported, and deslagging is conducted through the deslagging draw shaft and the deslagging level roadway; and layered construction is conducted until chamber construction is completed. The double-draw shaft-inclined roadway combined layered construction method has the characteristics that the deslagging cost is low, the deslagging process is simple, safety and environmental protection are achieved, and the ventilation effect is good, the construction cost can be reduced, the safety risk is reduced, and the quality is easy to control.

Description

technical field [0001] The invention relates to the field of mine construction, in particular to a combined layered construction method of a double chute-inclined lane with a tall chamber. Background technique [0002] The increase of mining scale and the improvement of mechanization level have provided space for the use of underground mine chambers, and the popularity rate of high chambers is getting higher and higher. The excavation and support of tall and large chambers has always been the focus and difficulty of mine infrastructure construction. According to the stability of the surrounding rock of the chamber and the size of the excavation, traditional chamber excavation methods are usually divided into four types, namely the full-section construction method , step construction method, pilot tunnel construction method and sliding method, but these four methods have certain limitations, or are affected by the size of the section, the construction is difficult and the con...

AI Technical Summary

Problems solved by technology

The excavation and support of tall and large chambers has always been the focus and difficulty of mine infrastructure construction. According to the stability of the surrounding rock of the chamber and the size of the excavation, traditional chamber excavation methods are usually divided into four types, namely the full-section construction method , step construction method, pilot tunnel construction method and sliding method, but these four methods have certain limitations, or are affected by the size of the section, the construction is difficult and the construction efficiency is low, or the size of the chamber and the surrounding rock conditions Influenced by large spans, large and changeable sections, narrow entrance and exit passages, large mutual interference, poor applicability, and correspondingly increased potential safety hazards in the construction process; if the full-section construction method is adopted, there will be pre-support procedures Complex, large exposed area of ​​roof surrounding rock, difficult to ensure personnel safety, difficult slag removal and difficult to ensure ventilation, large investment and high construction cost

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