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Abstract The high ground stress，high temperature，high osmotic pressure and strong time effect cause the deep fractured rock to show certain ductility and creep in mechanical characteristics of soft rock. The current anchoring theory lagging behind the engineering practice leads to the common usage of the empirical and semi-empirical methods in most of the anchoring engineering. During the last several decades，a number of on-site and laboratory tests and numerical calculations were carried out by many scholars home and abroad，and significant achievement in the theoretical research of bolt anchorage mechanism in rock mass were made. The universality and accuracy of these results are low because of the complexity of deep geological conditions. Combined with the existing anchorage theory，it is of great significance to use a reasonable numerical simulation method and on-site and laboratory tests to investigate the rock and soil anchoring mechanism and to guide the design and construction of anchoring engineering. Systematic summary was made regarding the deep fractured rock anchoring mechanism，and the key issues for the study of the deep fractured rock anchoring mechanism were concluded，including the choose of a reasonable calculation model for anchoring force transfer，the correct description of the stress distribution of the anchoring force and the establishment of the reasonable mechanical model for anchoring interface. The factors such as the effect in engineering application，the condition of anchoring rock mass and the effect of anchoring components should be considered in the research of the deep fractured rock mass.
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2016, Vol. 35 
