中南大学学报（自然科学版）2026，Vol.57Issue(2)：694-707,14.DOI:10.11817/j.issn.1672-7207.2026.02.017
深埋隧洞TBM施工过程应变型岩爆能量演化规律及影响因素
Energy evolution law and influencing factors of strain rockburst during TBM construction in deep tunnels
摘要
Abstract
To reveal the energy evolution laws and influencing factors of strain rockbursts induced by TBM excavation in deep tunnels,firstly,a 3-D refined numerical simulation of TBM tunneling and support for a granite rockburst section of an actual engineering project was conducted by using an internal variable creep model.Secondly,the evolution pattern of strain energy density and energy dissipation rate of surrounding rock during TBM construction process were analyzed,with its rationality verified against actual rockburst cases.Finally,the influences of rock properties,in-situ stress,and TBM advance rate on energy evolution were investigated.The results show that the energy evolution during strain rockburst formation process exhibits double-peak characteristics,corresponding to instantaneous rockbursts near the tunnel face and delayed rockbursts occurring at a certain distance behind the face,respectively.The field-observed moderate rockburst manifests typical delayed strainburst features like rock slab buckling and rock fragment ejection.The secondary concentration zones of numerically calculated strain energy density and energy dissipation rate show good agreement with the actual rockburst region(8-14 m behind the face and 30°-60° on the left side of tunnel invert).Strain energy density can indicate the severity of rockburst hazard(energy storage scale),while energy dissipation rate,as a stability indicator,can evaluate rockburst tendency(potential instability locations).Their combination offers a promising approach for comprehensive rockburst risk assessment.Increasing strength parameters a and R raises the strain energy peak but lowers the energy dissipation rate peak,whereas the effect of increasing viscosity coefficient κp2(controlling steady-state creep rate)is opposite.Increasing viscosity coefficient ηp1(controlling transient creep rate)primarily enhances the spatial lag of energy peaks.When the lateral pressure coefficient of minimum horizontal principal stress increases from 0.8 to 1.6,the rockburst risk intensifies markedly,and the strain energy and energy dissipation rate peaks of surrounding rock increase by approximately onefold and twofold,respectively.An increase in the TBM advance rate primarily leads to a rise in the peak energy dissipation rate.When the rate exceeds a certain threshold range,rockburst tendency can increase significantly.关键词
深埋隧洞/TBM/岩爆/能量演化/侧压力系数/掘进速率Key words
deep tunnel/tunnel boring machine(TBM)/rockburst/energy evolution/lateral pressure coefficient/advance rate分类
建筑与水利引用本文复制引用
刘耀儒,张如九,吴峥,李祥春,张琪,武超,于明圆..深埋隧洞TBM施工过程应变型岩爆能量演化规律及影响因素[J].中南大学学报（自然科学版）,2026,57(2):694-707,14.基金项目
国家自然科学基金资助项目(52179105) （52179105）
犬木塘水库工程科技创新资助项目(20222001412)(Project(52179105)supported by the National Natural Science Foundation of China （20222001412）
Project(20222001412)supported by the Science and Technology Innovation Project of Quanmutang Engineering) （20222001412）
