Tunnel excavation surrounding rock dynamic refined classification method based on integrated parameters

Abstract

The invention discloses a tunnel excavation surrounding rock dynamic refined classification method based on integrated parameters. The method comprises the following steps of: analyzing tunnel prospective design data, preliminarily judging classification of tunnel surrounding rocks, performing integrated parameter advance geological forecasting exploration on excavation tunnel face surrounding rocks, and correcting classification of a tunnel face and front surrounding rocks according to a forecasting result; performing geological recording observation on tunnel face excavation surrounding rocks, performing elastic wave velocity testing, and further correcting classification of the surrounding rocks of the tunnel face according to observation data and elastic wave velocity testing data; and performing monitoring measurement according to each construction step, and correcting the obtained classification of the surrounding rocks of the tunnel face according to monitoring measurement data to finish a cycle of surrounding rock refined classification. The method has the advantages that on the basis of analyzing the prospective design data and determining classification of the surrounding rocks, tunnel surrounding rocks in a construction stage are subjected to dynamic integrated refined classification by integrated operation of integrated parameter advance geological forecasting, tunnel face surrounding rock integrated exploration and field monitoring data analysis, so the classification of the surrounding rocks is refined and accurate.

Description

technical field [0001] The invention relates to a dynamic refinement and classification method and a device for tunnel excavation surrounding rock based on comprehensive parameters during tunnel construction. [0002] Background technique [0003] In recent years, my country's tunnel construction has entered a peak period. The vigorous development of tunnel engineering has provided conditions for the development of tunnel construction technology. At present, in the tunnel construction stage, the refinement and classification of surrounding rock is the common concern of designers, construction personnel and scientific researchers. important topic. In general, a complete surrounding rock classification system should include two parts: the surrounding rock classification in the design stage and the surrounding rock classification in the construction stage. [0004] At present, there is still a lack of an effective and perfect surrounding rock classification system in the const...

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Problems solved by technology

[0006] The purpose of the present invention is to overcome the technical problem that the existing tunnel surrounding rock classification method is insufficient in refinement and cannot effectively serve the tunnel construction, and to provide a dynamic refinement and classification method for tunnel excavation surrounding rock based on comprehensive parameters, aiming to solve the problem of In the process of tunnel construction, the waste of construction support caused by insufficient refinement and classification of surrounding rocks and construction accidents caused by insufficient support

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