ANALYSIS ON INCREMENTAL COHESION OF SURROUNDING ROCK DUE TO PRESTRESSED CABLE ANCHOR

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英文篇名：ANALYSIS ON INCREMENTAL COHESION OF SURROUNDING ROCK DUE TO PRESTRESSED CABLE ANCHOR 中文刊名：Journal of Coal Science & Engineering(China) 英文刊名：煤炭学报(英文版) 作者：夏建中 ; 闫莫明 ; 滕年保 ; 李方政 英文作者：Xia Jianzhong ; Yan Moming ; Teng Nianbao ; Li Fangzheng (Beijing Research Institute of Mine Construction ; China Coal Research Institnte ; Beijing 100013) 英文关键词：prestressed cable anchor ; surrounding rock ; anchorage effect ; incremental cohesion 出版日期：1998-03-15 年：1998 期：01 出版单位：Journal of Coal Science & Engineering(China)

摘要

A new method for determining the incremental cohesion △Cm of surrounding rock due to prestressed cable anchor is presented, and the formulas for △Cm are deduced and △Cm distributions also are discussed, based on the two anchorage effects, one is the effect with the prestressed vaIue △σ3 of cable anchor improving the stress state of surrounding rock and increasing the surrounding rock strength, the other is the fully encapsulated effect. The determined incremental cohesion △Cm is subiected to the model test and field measurement in the references, and coincides well with those tested results. The formulas for △Cm can be used in designing supoport parameters and related numerical analyses of prestressed cable anchor.

引文

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