CAJ | 학술논문

节理、裂隙作为高陡边坡常见的地质缺陷，对其长期变形和稳定造成重大危害。为研究节理、裂隙岩体卸荷流变力学特性，以贯通裂隙岩体为试验对象，进行不同卸荷路径下的流变试验。试验结果表明：贯通裂隙岩体轴向及侧向流变各向异性显著，侧向流变变形在节理、裂隙作用下随流变时间延长，围压卸荷量增大较轴向更为显著；在一次及分级卸荷流变对比试验中，相同条件下分级卸荷流变变形发展更充分，对岩体扰动更大，但试样破坏形态分析表明一次卸荷流变更易导致岩体破坏。根据试验成果，利用Burgers流变模型，分析卸荷流变参数，建立各参数在不同卸荷路径下的线性函数关系，并将函数关系代入Burgers流变模型，得到能综合反映不同卸荷路径影响的岩体流变模型。研究成果可为高陡边坡长期稳定理论研究及工程设计提供参考。
절리、렬극작위고두변파상견적지질결함，대기장기변형화은정조성중대위해。위연구절리、렬극암체사하류변역학특성，이관통렬극암체위시험대상，진행불동사하로경하적류변시험。시험결과표명：관통렬극암체축향급측향류변각향이성현저，측향류변변형재절리、렬극작용하수류변시간연장，위압사하량증대교축향경위현저；재일차급분급사하류변대비시험중，상동조건하분급사하류변변형발전경충분，대암체우동경대，단시양파배형태분석표명일차사하류변경역도치암체파배。근거시험성과，이용Burgers류변모형，분석사하류변삼수，건립각삼수재불동사하로경하적선성함수관계，병장함수관계대입Burgers류변모형，득도능종합반영불동사하로경영향적암체류변모형。연구성과가위고두변파장기은정이론연구급공정설계제공삼고。
Joint and fracture,as the common geological defects in high-steep rock slope,can cause damage to the long-term deformation and stability of slope. In order to study the unloading rheological mechanical property of jointed and fractured rock mass,triaxial rheological tests were performed for consecutive fractured rock mass under different unloading conditions. The axial and lateral rheological characteristics of consecutive fractured rock mass present considerable anisotropy. With rheological time prolong and unloading confining pressure values increasing,the lateral rheological deformation is larger than axial rheological deformation. The rheological deformation is more fully extended and rock mass is more thoroughly disturbed under step unloading condition contrast to once unloading,while once unloading rheology more easily leads to rock mass damage through failure modes of samples. Based on test results,unloading rheological parameters of Burgers model was analyzed and the linear relations of the parameters were founded under different unloading conditions. And then,the rock mass rheological model,which can consider the effects of the different unloading paths,was established. These conclusions are very useful for theoretical research and engineering design of high-steep rock slope long-term stability.