CAJ | 학술논문

针对广东梅城公路K93+946～K94+082段碎裂结构岩质高陡边坡,在充分研究现场工程地质条件基础上,基于离散元程序UDEC定量分析边坡开挖过程中各种工况下的应力应变趋势、可能出现的破坏模式与安全系数,获得边坡处于背斜的核部且节理裂隙发育,稳定性受岩层层面部分外倾影响较大;道路建设对山体开挖打破了原始平衡,引起坡体中部出现较大范围的剪切破坏区,整体出现类似于土坡的圆弧破坏;开挖后的边坡基本处于临界稳定状态,在一定触发因素作用下,可诱发大面积滑坡的结论.据此提出采用钢筋混凝土格构梁-锚杆(索)固脚强腰和稳固破碎岩体,加强排水系统并辅以浆砌块石护坡等措施的综合治理方案并实施,既保持了高等级公路沿线整体性,又达到边坡加固的目的.
침대엄동매성공로K93+946～K94+082단쇄렬결구암질고두변파,재충분연구현장공정지질조건기출상,기우리산원정서UDEC정량분석변파개알과정중각충공황하적응력응변추세、가능출현적파배모식여안전계수,획득변파처우배사적핵부차절리렬극발육,은정성수암층층면부분외경영향교대;도로건설대산체개알타파료원시평형,인기파체중부출현교대범위적전절파배구,정체출현유사우토파적원호파배;개알후적변파기본처우림계은정상태,재일정촉발인소작용하,가유발대면적활파적결론.거차제출채용강근혼응토격구량-묘간(색)고각강요화은고파쇄암체,가강배수계통병보이장체괴석호파등조시적종합치리방안병실시,기보지료고등급공로연선정체성,우체도변파가고적목적.
Aimed at cataclastic structure high steep rocky slope of K93 + 946 ～ K94 + 082 section of Meichen highway, the quantitative analysis of stress and strain tendency under kinds of operating mode stage, and possibly appeared destruction pattern and safety coefficient, is calculated by using UDEC discrete element method during stage excavation of side slope, in full research of the site engineering geology conditions. It can be concluded that, the slope is located in the kem of the anticline with the jointing crevasses growth, whose stability is majorly influent by extroversion of part of the rock layers; the path construction excavated to the mountain massif broke the primitive balance, causing the middle of the slope to produce wide-range shear failure area, the whole of which produces circular arc destruction similar to the soil slope; the side slope is basically at the critical steady state after excavation, and big area landslide may be induced if triggered. According to the above, it was pointed out using the reinforced concrete lattic frame beam-anchor bar (cable) to strengthen feet and waists of the slope, to firm rock mass and to strengthen the drainage system, assisted by masonry slope protection and things like such comprehensive measures to be put into effect, which maintains the integrity of first-class highway along the routes and achieves the goal of the slope protection.