探矿工程-岩土钻掘工程2016，Vol.43Issue(10)：44-48,5.
预应力锚索孔内扩孔工艺的研究
Research on Pre-stressed Anchor Cable Hole Reaming Technology LUO Hong-bao, WANG Quan-cheng, ZHANG Yong, JIANG Zhao-qun, YANG Dong
摘要
Abstract
The pre-stressed anchor cable technology is the common technology used in geological disaster control construc-tion, such as landslide control, slope anchorage and so on.For traditional anchor cable, anchor head was freely placed in the inner anchoring section inside the hole and the grouting was carried out in absence of pre-stressed state of inner ancho-ring section.But for self bearing type pre-stressed anchor cable, grouting is conducted in the pre-stressed condition.It is advantageous to the full play of mechanical properties of the slurry material and rock.In the fractured rocks of medium hard, after the anchorage section is reamed and the self-bearing type pre-stressed anchor installed, the bearing body is ex-panded, and the anchor is firmly locked under the action of the friction force and the end bearing capacity of the hole.It is therefore necessary to develop a reaming drill tool and drilling technology which are suitable for DTH hammer drilling in me-dium hard rock stratum( compressive strength is less than 30MPa) .The results of the indoor experiments of ream drilling show that the developed reaming drill tool and drilling technology can be used for reaming in anchor section.关键词
预应力锚索/扩孔钻具/分段扩孔/滑坡治理/边坡锚固Key words
pre-stressed anchor cable/reaming drill tool/subsection reaming/landslide control/slope anchorage分类
地质学引用本文复制引用
罗宏保,王全成,张勇,姜昭群,杨栋..预应力锚索孔内扩孔工艺的研究[J].探矿工程-岩土钻掘工程,2016,43(10):44-48,5.基金项目
中国地质调查局地质调查工作项目“川东州河流域地质灾害调查与防治示范” （）
