High-stress soft rock tunnel bottom plate control method

The invention provides a high-stress soft rock tunnel bottom plate control method. The method comprises the following steps of step 1, establishing a tunnel numerical model to obtain a tunnel bottom plate surrounding rock deformation distribution rule; step 2, quantitatively dividing a bottom plate...

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Main Authors YU XIUPING, XU KEMING, XU ZHIXING, JU CONG, HUANG HE, LI YONGHAI, WU JUNGUO, KONG PING'AN, CAO GUANGYONG, LI XINHUI, GAO FEI, YANG ZHONGJIE, LIU BAOCHUAN, PAN RUI
Format Patent
LanguageChinese
English
Published 16.11.2021
Subjects
AMMUNITION
BLASTING
CALCULATING
COMPUTING
COUNTING
EARTH DRILLING
ELECTRIC DIGITAL DATA PROCESSING
FIXED CONSTRUCTIONS
GALLERIES
HEATING
LARGE UNDERGROUND CHAMBERS
LIGHTING
MECHANICAL ENGINEERING
MINING
PHYSICS
SHAFTS
TUNNELS
WEAPONS
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Summary:The invention provides a high-stress soft rock tunnel bottom plate control method. The method comprises the following steps of step 1, establishing a tunnel numerical model to obtain a tunnel bottom plate surrounding rock deformation distribution rule; step 2, quantitatively dividing a bottom plate zero displacement curve, a tensile strain range and a bottom plate plastic zone range according to the bottom plate surrounding rock deformation distribution rule; according to the data, determining blasting parameters, anchoring parameters and construction parameters in the blasting pressure relief supporting stage of the bottom plate; step 3, monitoring the damage degree of the bottom plate surrounding rock and surrounding rock stress distribution to obtain bottom plate deformation data; step 4, according to the deformation data of the bottom plate, determining bolt-grouting parameters and grouting opportunity of a secondary bolt-grouting supporting stage; step 5, monitoring the displacement degree of the bottom
Bibliography:Application Number: CN202111007117