CAJ | 학술논문

试验利用“锚杆–护坡”模拟“锚杆固定大面积护坡”进行坡面型泥石流治理试验,研究坡面型泥石流“锚杆–护坡”治理过程中土体变形的宏细观机制.试验观测表明在“锚杆–护坡”治理下坡体未发生分层滑动,坡体位移场分析中出现了潜在的圆弧状薄弱面,坡体形成类似于黏土的小位移圆弧滑移趋势.采用可视化细观测试系统从细观尺度研究坡面型泥石流“锚杆–护坡”治理下土体的变形机制.细观分析可知,试验过程中,颗粒下沉并在坡体底部积聚,坡体下层细颗粒含量增加,上层以粗颗粒为主,导致坡体上部面积孔隙率大于底部,坡体结构由不同粒径颗粒均匀分布变为“底部细颗粒沉积密实,上层粗颗粒骨架稳定”的相对稳定结构.试验研究表明:“锚杆–护坡”的滤水固土作用,改变坡体的变形机制和结构,减小坡面型泥石流的发生几率,为坡面型泥石流的工程治理提供参考.
시험이용“묘간–호파”모의“묘간고정대면적호파”진행파면형니석류치리시험,연구파면형니석류“묘간–호파”치리과정중토체변형적굉세관궤제.시험관측표명재“묘간–호파”치리하파체미발생분층활동,파체위이장분석중출현료잠재적원호상박약면,파체형성유사우점토적소위이원호활이추세.채용가시화세관측시계통종세관척도연구파면형니석류“묘간–호파”치리하토체적변형궤제.세관분석가지,시험과정중,과립하침병재파체저부적취,파체하층세과립함량증가,상층이조과립위주,도치파체상부면적공극솔대우저부,파체결구유불동립경과립균균분포변위“저부세과립침적밀실,상층조과립골가은정”적상대은정결구.시험연구표명:“묘간–호파”적려수고토작용,개변파체적변형궤제화결구,감소파면형니석류적발생궤솔,위파면형니석류적공정치리제공삼고.
Slope protection is a way to prevent the debris flow. Model test was carried out to study the macro-meso mechanism of slope protection and anchors were fixed to prevent the debris flow on slope by using the anchor-slope protection. Retrogressive toe sliding is not found during the experiment;and four stages as water seepage,pore water accumulation,close-grained slide and relative stability of slope were found during test. Based on the macro digital camera,the transformation mechanism of soil including the trail of particle movement, displacement and porosity were analyzed during the debris flow on slope prevention with anchor-slope protection. The meso-analysis shows that the movement of particle was restricted by anchor-slope protection;and the porosity dropped down by 12%,and the relative stable state as fine particle drop to the bottom and compaction,the upper coarse particle skeleton is stable was formed at last. The research manifests that the probability of debris flow on slope was decreased by the effect of filtering water and holding soil of anchor-slope protection with different slope deformations and structures. The research provides a reference for the debris flow on slope prevention.