Determination method of sand karst stratum shield tunnel grouting safe karst cave distance

The invention provides a determination method of a sand karst stratum shield tunnel grouting safe karst cave distance. According to the determination method, aiming at the geological condition of the positions, where karst caves are distributed, under a sand karst stratum shield tunnel, a relation c...

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Bibliographic Details
Main Authors ZHAO XIANGHAO, WU HUAINA, SHEN SHUILONG, LYU HAIMIN
Format Patent
LanguageChinese
English
Published 19.04.2017
Subjects
CALCULATING
COMPUTING
COUNTING
EARTH DRILLING
ELECTRIC DIGITAL DATA PROCESSING
FIXED CONSTRUCTIONS
GALLERIES
INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTEDFOR SPECIFIC APPLICATION FIELDS
LARGE UNDERGROUND CHAMBERS
MINING
PHYSICS
SHAFTS
TUNNELS
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Summary:The invention provides a determination method of a sand karst stratum shield tunnel grouting safe karst cave distance. According to the determination method, aiming at the geological condition of the positions, where karst caves are distributed, under a sand karst stratum shield tunnel, a relation curve of the grouting pressure and the perpendicular distance is built through cubic spline fitting on feature points according to the mechanical balance at the boundaries of the karst caves and the transfer rule of the grouting pressing in a rock and earth mass, and therefore the safe karst distance under the tunnel designed grouting pressure is obtained. According to the determination method, the problem that in the prior art influence of shield tail grouting on the karst caves around the tunnel is not considered is overcome , more comprehensive and reliable bases are provided for determination of the karst cave treatment range, the safety of shield tunnel construction is ensured, and the determination method is s
Bibliography:Application Number: CN20161916142