Plywood support structure for adjacent ore removal tunnels and construction process thereof

Abstract

The invention discloses a plywood support structure for adjacent ore removal tunnels and a construction process thereof, and relates to the technical field of natural caving mine supporting. The plywood support structure comprises anchor holes, mortar anchors, horizontal anchor cables, top anchor cables, concrete shields and support plates, wherein the anchor holes are formed in surrounding rockson the tops of the ore removal tunnels; the mortar anchors are inserted into the anchor holes; gaps between the mortar anchors and the anchor holes are filled with mortar; the concrete shield structures are concrete coatings on the inner walls of the ore removal tunnels; the support plates are steel plates which are closely fixed to the concrete shield structures; a plurality of anchor cable holesare formed in parallel in the surrounding rocks between adjacent two ore removal tunnels; the horizontal anchor cables are arranged in the anchor cable holes; the mortar is filled into the position between the horizontal anchor cables and the anchor cable holes; the two ends of the horizontal anchor cables are fixedly connected with the support plates on the two sides of the surrounding rocks; and the tops of the ore removal tunnels are also provided with top anchor cables. Through the adoption of the plywood support structure, the stability of the ore removal tunnels is improved effectively,and the maintenance cost in the production of the ore removal tunnels is lowered.

Description

technical field [0001] The invention relates to the technical field of natural caving mine support, in particular to a splint support structure used for complex and broken adjacent mining roadways in the natural caving method. Background technique [0002] The natural caving mining method needs to arrange dense and parallel mining roadways in the mine, and arrange intercolumns in the mining roadway to support the mining roadway. , ventilated chamber and unloading chamber and other projects, resulting in the continuous damage and shrinkage of the surrounding rock of the inter-column. Under the dynamic load induced by mining such as bottom-drawing blasting, ore-drawing impact or arch foot change, the surrounding rock of the ore-exiting roadway If the stability becomes poor, the support system will lose its function, especially in the vicinity of complex structures with multiple faults, the deformation and damage of the mining roadway will be serious, and the safety hazard and ...

AI Technical Summary

Problems solved by technology

[0003] What the present invention aims to solve is the problem that in the existing natural caving mining method, affected by the excavation, the surrounding rock of the inter-columns shrinks continuously, the stability becomes poor, and the supporting function is lost.

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