山西建筑
山西建築
산서건축
Shanxi Architecture
2015年
28期
54-55,56
,共3页
UDEC%溶洞%危岩体%裂隙%剪切破坏
UDEC%溶洞%危巖體%裂隙%剪切破壞
UDEC%용동%위암체%렬극%전절파배
UDEC%karst cave%dangerous rock%crevice%shear failure
利用 UDEC 分别对降雨前及降雨后的危岩体进行模拟,显示指出岩体沿溶洞节理方向发生变形;因陡倾裂隙与溶洞贯通,导致力学性能迅速降低,岩体沿着溶洞节理产生了下滑;在降雨条件下,危岩体将处于不稳定状态,沿软弱面发生剪切破坏。
利用 UDEC 分彆對降雨前及降雨後的危巖體進行模擬,顯示指齣巖體沿溶洞節理方嚮髮生變形;因陡傾裂隙與溶洞貫通,導緻力學性能迅速降低,巖體沿著溶洞節理產生瞭下滑;在降雨條件下,危巖體將處于不穩定狀態,沿軟弱麵髮生剪切破壞。
이용 UDEC 분별대강우전급강우후적위암체진행모의,현시지출암체연용동절리방향발생변형;인두경렬극여용동관통,도치역학성능신속강저,암체연착용동절리산생료하활;재강우조건하,위암체장처우불은정상태,연연약면발생전절파배。
Reveal the rock mass deformation along the karst cave joints by simulating before-rain and after-rain rock mass with UDEC. The con-nection between steep fissure and karst cave leads to a sharp decrease of mechanical property,which further causes the rock mass to slide along karst cave joints. Dangerous rock mass is not stable in rain and shear failure thus occurs along the weak plane.