In　tunnel　blasting,　an　analytical　solution　for　dynamic　stress　in　the　surrounding　rock　of　adjacent　tunnels　is　critical　for　dynamic　response　analysis,　mechanical　evaluations,　and　crack　propagation　control.　Previous　studies　on　stress　field　analytical　solutions　primarily　modeled　rock　as　a　linear　elastic　material,　focusing　mainly　on　the　P-wave　effects　from　instantaneous　detonation.　Based　on　Heelan’s　short　cylindrical　cavity　model,　this　paper　derives　an　analytical　solution　for　blast-induced　dynamic　stresses　in　adjacent　tunnel　rock,　incorporating　both　induced　SV-waves　and　a　rock　mass　damage　factor　through　rigorous　theoretical　analysis.　Numerical　case　studies　and　field　measurements　were　used　to　analyze　stress　propagation　during　tunnel　blasting,　and　theoretical　results　were　compared　with　measured　data.　The　key　findings　were　as　follows:　Radial　stress　＞　axial　stress　＞　hoop　stress.　All　three　stresses　decay　with　increasing　distance　and　damage　factor,　following　an　inversely　proportional　relationship　with　distance.　Radial　stress　decays　faster　than　axial　and　hoop　stresses.　Stress　also　decays　exponentially　over　time,　with　the　peak　occurring　after　the　transverse　wave　arrival.　The　theoretical　results　show　approximately　10%　deviation　from　the　existing　empirical　formulas,　while　field　measurements　closely　match　the　theoretical　model,　showing　consistent　stress　trends　and　an　average　error　of　7.02%　(radial),　7.56%　(axial)　and　7.05%　(hoop),　confirming　the　reliability　of　the　proposed　analytical　solution.　©　2025　by　the　authors.