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Backfilling stand shoring system of three-dimensional prestress wire of deep soft rock roadway

A technology of prestressed steel strands and steel strands, applied in tunnels, tunnel linings, shaft equipment, etc., can solve problems such as excessive clearance, uneven stress on supports, biased pressure, etc., to achieve uniform stress and prevent local The effect of cracking failure and short initial setting time

Active Publication Date: 2014-12-10
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The support system effectively solves the problems of excessive gap between the support and the roadway pit, uneven force on the support, and serious bias, effectively improves the overall strength and stiffness of the system, and improves the control ability of the soft rock roadway

Method used

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  • Backfilling stand shoring system of three-dimensional prestress wire of deep soft rock roadway
  • Backfilling stand shoring system of three-dimensional prestress wire of deep soft rock roadway
  • Backfilling stand shoring system of three-dimensional prestress wire of deep soft rock roadway

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Embodiment Construction

[0043] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0044] refer to Figure 1~6 , the specific embodiment of the present invention is, deep soft rock roadway three-dimensional prestressed steel strand wall rear filling support support system (abbreviated as SAFA support system), main support 4, anchor rod 2, anchor cable 3, three-dimensional prestressed steel The strand system (that is, the frame-anchor steel strand 6 and the frame-frame steel strand 7), the filling material 5 behind the support wall and the filling baffle 8 are composed.

[0045] Wherein, the support 4 forms the inner load-bearing structure of the support system, and the anchor rod 2 and the anchor cable 3 form the outer load-bearing structure of the support system. The three-dimensional prestressed steel strand system (frame-anchor steel strand 6 and frame-frame steel strand 7) connects the bracket 4 and the anchor rod 2 and the ancho...

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Abstract

The invention discloses a backfilling stand shoring system of a three-dimensional prestress wire of a deep soft rock roadway. The backfilling stand shoring system comprises a stand, a bolt and anchor cable and a three-dimensional prestress wire system, wherein the stand forms an internal bearing structure layer of the shoring system, the bolt and anchor cable forms an external bearing structure layer of the shoring system, the bolt and anchor cable extends into surrounding rock, a filling material is filled between the stand and the surrounding rock to form an intermediate bearing structure layer, and the stand and the bolt and anchor cable are annularly, radially and axially three-dimensionally connected through the three-dimensional prestress wire system and a pretightening force is applied. The backfilling stand shoring system has the advantages of good integrality, good stress state, high material utilization rate and low labor intensity.

Description

technical field [0001] The invention relates to an underground engineering support system, in particular to a three-dimensional prestressed steel strand wall post-fill support support system for a deep soft rock roadway. Background technique [0002] At present, with the development of society and economy, underground rock mass engineering is further developed in the direction of deep and wide, the surrounding rock layers are getting deeper and deeper, and the engineering geological conditions are becoming more and more complex. Factors such as high ground stress, soft rock rheology, faults and other geological structures, groundwater and other factors have caused unprecedented support difficulties for underground engineering. Scholars at home and abroad have proposed and developed a variety of support forms through research, such as anchor-spray support, anchor-net cable-spray support, metal brackets, and high-strength arc plates. It can be seen from the existing data that...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D11/00E21D21/00
Inventor 李术才王琦李为腾王富奇苗素军王德超王洪涛张波李智
Owner SHANDONG UNIV
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