Research on prestressed cable parameters optimization designs and its application to Jinchuan Mine No.2

YANG Zhi-qiang; GAO Qian; WANG Zheng-hui

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Research on prestressed cable parameters optimization designs and its application to Jinchuan Mine No.2

更新时间：2026-06-25

- Research on prestressed cable parameters optimization designs and its application to Jinchuan Mine No.2
- Vol. 29, Issue 5, (2008)
- 作者机构：
  
  1. 北京科技大学,北京,100083
  2. 金属矿山高效开采与安全教育部重点实验室,北京,100083
  3. 金川镍钴设计研究院矿山分院,甘肃,金昌,737100
- 作者简介：
- 基金信息：
- DOI：
  CLC： TD35
- Online First：24 July 2013，
  
  Published：2008
- 稿件说明：
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YANG Zhi-qiang, GAO Qian, WANG Zheng-hui. Research on prestressed cable parameters optimization designs and its application to Jinchuan Mine No.2[J]. 2008, 29(5).
DOI：

YANG Zhi-qiang, GAO Qian, WANG Zheng-hui. Research on prestressed cable parameters optimization designs and its application to Jinchuan Mine No.2[J]. 2008, 29(5). DOI：

摘要

针对金川二矿区深部高应力采场巷道支护面临的困难，采用以预应力锚索为主要支护手段的综合控制技术，并在 1 178 m分段巷道进行了现场试验研究。首先，基于工程经验，确定了长锚索支护的初步设计参数；然后，采用了数值分析方法，进行了正交数值试验和支护参数的优化设计，由此表明，对于Ⅲ类偏上的围岩（RMR = 40）和受中等采动影响（? = 1.20），预应力锚索长度应为6.5 m；对于受剧烈采动影响的1 178 m分段巷道，采用6.5 m长锚索支护，其稳定安全系数达到1.28，故5.5～6.5 m长的锚索可满足分段道的稳定要求。

Abstract

Considering the support difficulty of the roadways with high stress zone in Jinchuan Mine No.2

a prestressed cable support technique is studied and adopted at 1 178 m sublevel in Mine No.2. The prime support parameters were first given with the help of engineering experiences. Then orthogonal numerical experimentation regression analyses were executed. The results show that pretressed cable with the length of 6.5 m should be used in the Ⅲ or stronger grade (with RMR of 40) surrounding rock or the tunnel affected by the mining lightly

as for the tunnel suffered from the mining seriously

cable supporting with length of 6.5 m can make the safety coefficients reach 1.28

therefore

cable with length of 5.5－6.5 m can meet the stability need of sublevel tunnel.

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