| Prestressed anchorage historic prestressed anchor cable in underground cavernshas reached half a century. Prestressed anchor anchoring mechanism is not enoughaccurate, comprehensive, there are many problems to be solved. In this paper,prestressed set anchor cable in the underground cavern support engineering problem,the length of prestressed anchor, anchor optimal anchor angle layout, anchor cablespacing set study. In this paper, a systematic analysis to obtain the following results:①Detailed analysis of the surrounding rock stability of underground engineeringmethods and factors affecting the stability of underground caverns, according to thetheory of elasticity and elastic-plastic theory surrounding rock pressure method.②Through a detailed analysis of the prestressed anchor composition, structureand engineering properties of the anchor cable’s role in the form of undergroundcaverns and typical prestressed anchor draw: prestressed anchor supporting projects inthe underground cavern, a variety ofof the type of cable can be used adaptive anchorand pressure-dispersion is particularly suitable for underground caverns.③The prestressed anchor underground caverns length design details, focusing onanalysis of the method of calculation of its length through the thickness of the loosecircle, and provides a new approach for the design of pestressed achor.④By FLAC3D numerical simulation of underground caverns, after the plusanchor before processing anchor contrast, discourse and verify the effect of theprestressed anchor cable supporting the underground cavern. By contrast different theanchor spacing conditions under, the simulated underground cavern stress anddisplacement data were analyzed to determine an appropriate anchor cable spacing.Prestressed anchor spacing setting forth the method of numerical simulation analysis,conducted an assessment of the the anchor rope spacing and length of the anchoringeffect, as the the prestressed anchor design provides a new way of thinking. |
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