Anti-shock and shock-absorbing support structure of horse head gate

Abstract

The invention discloses an ingate anti-impact damping supporting structure and belongs to the technical field of mining and shaft building. The supporting structure sequentially comprises a high-toughness reinforced concrete pouring layer, a composite foam metal pad layer (a main energy adsorbing and damping layer) and an anchor rope grouting reinforcement layer; the high-toughness reinforced concrete pouring layer, the composite foam metal pad layer and the anchor rope grouting reinforcement layer are combined to form the strong-weak-strong supporting structure; the composite foam metal pad layer is tightened on a concrete lining outside the anchor rope grouting reinforcement layer to form a main energy adsorbing and damping metal pad layer. According to the ingate anti-impact damping supporting structure, a rigid structure and a flexible structure are coupled together, so that a synergetic deformation effect of the supporting structure is played, the damage effect of impact shockwaves is effectively absorbed and weakened, and the problem of disasters of damage and cracking of surrounding rocks, unstability of the supporting structure and the like which are caused by large deformation of a highly centralized static stress and a dynamic impact load of an ingate is solved.

Description

technical field [0001] The invention belongs to the technical field of mining and well construction, and in particular relates to an anti-shock shock-absorbing support structure for a Matou gate, which is suitable for the support and construction design of a Matou gate under complex geological conditions in deep areas. Background technique [0002] As the demand for coal increases and the depth of mining continues to increase, shallow resources are increasingly depleted. my country's mines have entered deep mining one after another, and the geomechanical environment has become more complex. With the increase of mining, engineering disasters are increasing day by day, such as mine rock burst, severe mine pressure, large deformation of roadway surrounding rock, rheology, and rising ground temperature, which pose a huge threat to the safe and efficient mining of deep resources. The Matou Gate is the part connecting the shaft and the roadway at the bottom of the shaft. It is loc...

AI Technical Summary

Problems solved by technology

Under multiple blasting vibrations, the roadway cannot be stabilized for a long time, the concentrated stress generated by the excavation of Matoumen is superimposed, the stress state deteriorates, the deformation of the surrounding rock is aggravated, and dynamic disasters are induced. Linear dynamic phenomenon, causing instability and damage to the support structure system

In the past, under the deep high ground stress and complex geomechanical environment, there are few reports on the support structure of Matoumen to resist the impact of dynamic disasters

[0004] In the prior art, in the reinforcement structure at the Matou Gate, the strength of the support structure is often increased, and the deformation of the support structure and the surrounding rock is not coordinated, and it cannot resist the impact of dynamic loads induced by excavation, blasting, and roof rock fractures. vibration, and the poured concrete has insufficient toughness and poor impact strength, and large-scale spalling of reinforced concrete and exposed steel bars have occurred, which can no longer meet disasters such as large deformation of roadway surrounding rock and dynamic impact in deep high-in-situ stress environments.

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