近邻充水溶洞隧道爆破施工围岩损伤研究

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中图分类号：P642；U455.6 文献标识码：A 文章编号：2097-5465（2025）05-0076-11

Abstract：Inordertostudythemechanismof suroundingrockdamagepenetrationandwaterinrushdisasterinducedbythe couplingefectofadjacentkarstcavesandblastingloads，basedonatunnelprojectinChongqing，bycomparingthedamagetestof surroundingrockand plexiglassblastingunderdouble-holeblasting，theeffectsofexplosivedetonationvelocityexplosivedesity andcave waterpressureonthedamagerangeofsuroundingrockarediscussed.Theresultsshowthatthehigher thedensityof explosives，thegreatertheexpansionrangeof thefracture zoneunderthecondition thatthewaterpresureofthecaveis1MPa. Whenthewaterpresureof thecaveincreasesto1.2MPa，thedetonationvelocityhasamoresignificantefectontheexpansionof thefracturezone，ndtheriskofwaterinushdamageincreasessignificantly.Indition，thenumericalsimulationmethodisused toverifytheanalyticalsolutionoftheanti-outburstthicknessofthekarstcave unnel.Theoveralltrendofthetwomethodsis consistentandtheerorissmall，whichindicatesthat theanalyticalmethodbasedonthesimplifiedmodelhashighaccuracyand can provide a reliable basis for the design of engineering anti-outburst design.

Keywords：adjacent karstcaves；blast；surroundingrock damage；anti-outburst thickness

0 引言

岩溶地区的隧道建设规模持续扩大，地下工程建设面临的地质环境愈发复杂。（剩余10009字）