Reinforced concrete artificial roof of underground mine shallow hole shrinkage method chamber

Abstract

The invention discloses an reinforced concrete artificial roof of an underground mine shallow hole shrinkage method chamber. The reinforced concrete artificial roof is formed by combining and connecting longitudinal beams (1), cross beams (2) and partition plates (3); the longitudinal beams (1) are parallel to each other and are arranged in a row at equal intervals perpendicular to the trend of the chamber, the cross beams (2) are arranged between the two adjacent longitudinal beams (1) and parallel to the trend of the chamber, and the partition plates (3) are arranged between the two adjacent longitudinal beams (1) and on the two sides of the cross beams (2); the middles of the longitudinal beams (1) stretch across an ore body, and the two ends of the longitudinal beams (1) are supported in ore body hanging wall surrounding rock and ore body footwall surrounding rock respectively; the longitudinal beams (1), the cross beams (2) and the partition plates (3) are all of reinforced concrete structures and are connected into an integral bearing structure through steel bars. The reinforced concrete artificial roof is used for replacing an ore jacking column, the situation that ore resources are wasted due to the fact that the ore jacking column is reserved is avoided, and the advantages of being simple in structure, good in safety, high in resource utilization rate and the like are achieved.

Description

technical field [0001] The invention belongs to the technical field of underground mining, and in particular relates to an artificial false roof of a mining house adopting a shallow-hole ore retention method for mining, which is especially suitable for mining underground mines with high ore value. Background technique [0002] In the design of mining methods in underground mines, in order to ensure the safety of operations in the mine, it is necessary to leave a certain size of the top column on the top of the mine. For example, a fluorite mine adopts the shallow hole retention method, and the length of the top pillar is equal to the length of the mine house, which is 40-50m; the width of the top pillar is equal to the thickness of the ore body, and does not exceed 5m; the thickness of the top pillar depends on the stability of the surrounding rock. , for 3 ~ 6m. Calculated according to the above size parameters, the volume of the ore top column is about 240-1800m 3 . Whe...

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Problems solved by technology

[0005] The purpose of the present invention is to provide an underground mine shallow hole with good safety, high resource utilization rate, simple construction and low cost in view of the problems of waste of resources and unguaranteed safety performance in the ore top pillar designed for existing underground mine mining. Reinforced Concrete Artificial False Roof of Mine House by Mine Retention Method

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