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USE ADVANCE ROOFBOLT SHOT CYCLING TECHNIQUE FOR OVERCOMING TECHNICALLY DIFFICULT PROBLEMS OF TUNNEL PORTAL CONSTRUCTION IN SANDY GRAVEL
Author(s): 
Pages: 16-18
Year: Issue:  z1
Journal: ACTA GEOLOGICA SICHUAN

Keyword:  砂砾石超前锚杆短循环弱爆破人工开挖;
Abstract: 介绍在四川省荥经县泗坪罗家湾电站桥溪沟支洞工程的施工中,利用超前锚杆短循环法解决在砂砾石地层中挂口难题的一些具体措施和关键技术。
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