Underground engineering roadway yielding support system

Abstract

The invention relates to the field of underground engineering surrounding rock support and in particular relates to an underground engineering roadway yielding support system. The system comprises a yielding hydraulic prop, a yielding anchor rod, a mesh, a steel beam, a pressure sensor and a controller, wherein the mesh is spread on roadway surrounding rock, and the roadway surrounding rock is supported by using the yielding anchor rod; the steel beam is erected, and top plate support is performed through the yielding hydraulic prop; the yielding anchor rod comprises an anchoring head, one or more yielding connectors, an elastic cushion block, a W-shaped steel strip, a base plate, a yielding device and a handle nut; each yielding connector is used for connecting two left and right sections of anchor rod bodies and is a cavity; the connected two sections of anchor rod bodies are positioned at the end of the cavity, and a piston stopper is arranged at the end; a spring is arranged between the piston stopper and the end of the cavity of each connector. The constant yielding support can be realized according to actual geological surrounding rock stress conditions, the conditions of the support system are regulated, a good yielding-supporting support system is formed, and the optimized constant yielding support is achieved.

Description

technical field [0001] The invention relates to the field of underground engineering surrounding rock support, in particular to an underground engineering well lane yield pressure support system. Background technique [0002] In underground engineering fields such as mines and tunnels, it is essential to support the roadway surrounding rock. In the mining field, as the mining depth increases, the ground stress increases significantly, and the stress of the surrounding rock of the roadway increases, and in the deep roadway, the surrounding rock geology presents soft rock, the deformation of the soft rock roadway is large, and the roadway support is difficult. [0003] For the support of engineering structures such as large deformation underground engineering roadways and tunnels, there are mainly three forms of passive support, active support and combined support at home and abroad. In order to better support the surrounding rock of soft rock roadways and give full play t...

AI Technical Summary

Problems solved by technology

[0003] For the support of engineering structures such as large deformation underground engineering roadways and tunnels, there are mainly three forms of passive support, active support and combined support at home and abroad. In order to better support the surrounding rock of soft rock roadways and give full play to the surrounding rock The rock self-stabilization ability is the basic support idea in this field. The support system can properly release the deformation energy of the surrounding rock to form an integrated support system of “relief and support” and give full play to the self-stabilization ability of the surrounding rock. At the same time, the support system can properly Release energy and provide strong support at the same time. However, the yield support system in the existing technology either cannot achieve a constant working resistance well, or the constant working resistance depends on the structure of the support system itself, and cannot be based on the roadway Adjusting the actual surrounding rock geological conditions often fails to achieve the expected support-surrounding rock integrated support effect

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