CAJ | 학술논문

露天边坡角优化的前提是保证边坡的稳定,以新疆索矿极坚硬岩石边坡为例,利用Hoek-Brown准则将室内岩石力学参数折减成岩体参数,借助FLAC3D软件,采用强度折减理论对极坚硬岩质最终边坡角进行优化研究.研究结果表明:最终边坡角由原设计的60°提高至65°,极坚硬岩质边坡破坏类型属于平面滑动破坏,坡体以剪切破坏为主,坡脚的剪应变增量最大,剪应变增量区域从坡脚贯通到坡顶;坡脚的位移量最大,其位移方向水平向左、向上,坡顶位移向下.
로천변파각우화적전제시보증변파적은정,이신강색광겁견경암석변파위례,이용Hoek-Brown준칙장실내암석역학삼수절감성암체삼수,차조FLAC3D연건,채용강도절감이론대겁견경암질최종변파각진행우화연구.연구결과표명:최종변파각유원설계적60°제고지65°,겁견경암질변파파배류형속우평면활동파배,파체이전절파배위주,파각적전응변증량최대,전응변증량구역종파각관통도파정;파각적위이량최대,기위이방향수평향좌、향상,파정위이향하.
Ensuring the stability of the slope is the premise of the slope angle for optimization.Taking an extremely hard rocks slope in Xinjiang as an example, indoor rock mechanics parameters are reduced to the rock mass parameters by Hoek-Brown strength criterion firstly.Then the sloping angle is analyzed and optimized using the strength reduction theory by FLAC3D.The results show that the final sloping angle is increased from 60 to 65.Failure type of extremely hard rock be-longs to the plane sliding failure.Shear failure is the main failure type of the slope.The shear strain increment is taken from the bottom of the slope to the top and maximum shear strain increment appears at the bottom of the slope.The maximum dis-placement of the slope occurred in the slope foot and the displacement direction is horizontal to the left and up.The dis-placement direction of the top is down.