三峡船闸北线二闸首南坡开挖与加固研究

doi:10.13722/j.cnki.jrme.2019.0916

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摘要三峡船闸高直立边坡岩体的开挖变形控制与加固是确保三峡工程按期蓄水的关键。通过对开挖加固空间关系及安全稳定的综合分析论证，解决了北线二闸首中隔墩上部倒悬体和下部基岩爆破开挖稳定的复杂施工问题。通过超前锚固、个性化控制爆破、倒悬体高效加固、长大锚索快速施工及混凝土回填等技术的应用，提出了三峡船闸上部倒悬体和下部爆破开挖综合处理方案和工作流程。实现了船闸安全、优质、高效建设，确保了三峡船闸在2003年按期投运，监测显示船闸已安全运行16年。研究成果对于类似工程的开挖加固稳定具有重要参考意义。

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	樊启祥1
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	魏鹏程3
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	耿峻1

关键词 ：水利工程, 三峡船闸, 开挖破损, 加固稳定, 爆破监测, 工作流程

Abstract：The control of excavation deformation and reinforcement of vertical slope rock mass of the three gorges project is the key to ensure the timely impounding. Based on the analysis and demonstration of space relationship of excavation and reinforcement，and overall stability，this study solves the complex construction problems on the stability of lower bedrock blasting excavation and overhanging rock mass of the second ship lock head along north line. Through the application of advanced anchorage，individualized controlled blasting，efficient reinforcement of overhang rock mass，rapid construction of long anchor cables and concrete backfilling，the treatment scheme and engineering procedures of the overhang rock mass on the slope is proposed. The safety，high quality and high-efficiency construction of the ship lock are sure，and the ship lock is put into operation on schedule in 2003. The monitoring results show that the ship lock has been in smooth operation for 16 years. The engineering procedure proved beneficial in contributing to the avoidance of overhanging rock mass failure during construction，and have important reference significance for similar projects.

Key words： hydraulic engineering Three Gorges ship lock excavating damage reinforcement stability blasting monitoring engineering procedure

引用本文:

樊启祥1，2，魏鹏程3，林鹏3，耿峻1. 三峡船闸北线二闸首南坡开挖与加固研究[J]. 岩石力学与工程学报, 2020, 39(S1): 2703-2712.
FAN Qixiang1，2，WEI Pengcheng3，LIN Peng3，GENG Jun1. Study on excavating and reinforcement stability on the south slope of the north gate head of the Three Gorges ship lock. , 2020, 39(S1): 2703-2712.

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http://rockmech.whrsm.ac.cn/CN/10.13722/j.cnki.jrme.2019.0916 或 http://rockmech.whrsm.ac.cn/CN/Y2020/V39/IS1/2703

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