Smooth sprayed concrete support structure for deep mine roadway of coal mine

Abstract

The invention discloses a smooth sprayed concrete support structure for a deep mine roadway of a coal mine. The smooth sprayed concrete support structure comprises a combined arch structure, wherein aU-shaped arch part is arranged on the combined arch structure; the U-shaped arch part, a warning device, an edge pressing device, a rolling device, a fixed device, a trigger device and a force applying device are matched for comprehensively monitoring the combined arch structure in real time, so that a leakage condition is avoided; moreover, while water leakage or a concrete layer local disintegration drop problem exists, a routing inspection miner is timely reminded, so that the miner can timely repair a corresponding part, and a situation is prevented from further worsening, and therefore,requirements on observation power of the miner in the inspection process are greatly reduced, time and labor are saved better; and meanwhile, the problem that a concrete layer locally disintegrates and drops to injure the miner by a crushing object can be avoided, safety is high, and practicability of the smooth sprayed concrete support structure for the deep mine roadway of the coal mine is improved.

Description

technical field [0001] The invention relates to the field of smooth shotcrete support structures for deep coal mine roadways, and more specifically relates to a smooth shotcrete support structure for deep coal mine roadways. Background technique [0002] The roadway is a variety of passages drilled between the surface and the ore body, which are used for ore transportation, ventilation, drainage, pedestrians, and various necessary preparations for new excavation of ore for metallurgical equipment. These passages are collectively referred to as roadways. , the roadway is widely used in coal mining. When the roadway is used in deep coal mines, the integrity of the surrounding rock of the roadway is easy to be affected by complex coal seam structure, developed cracks, high in-situ stress, severe mining impact, soft surrounding rock structure, and fractures. Under the influence of structural development and other factors, the roadway is destroyed, the deformation and damage of t...

AI Technical Summary

Problems solved by technology

[0003] The smooth sprayed concrete support structure of the existing coal mine deep shaft roadway uses compressed air to spray concrete at high speed into the joints and fissures on the surface of the surrounding rock, and connects the rock masses separated by the joints and fissures, effectively preventing the loosening and sliding of rock blocks , in addition, the combination of shotcrete bolt support and bolt support, metal mesh and U-shaped steel improves the performance and engineering quality of the support, and improves the stability of the roadway. However, the shotcrete support structure is In the process of using, cracks will be generated under the action of ground stress, geological movement and other factors, resulting in water leakage problems, requiring regular inspections by miners, which heavily rely on the observation of miners, which is not only time-consuming and laborious, but also easy At the same time, the development of cracks may even lead to the partial disintegration and falling off of the shotcrete layer and injure the miners. Therefore, it is urgent to design a smooth shotcrete support structure for deep coal mine roadways.

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