CAJ | 학술논문

通过对宜昌磷矿矿区内崩塌、滑坡、泥石流、地面塌陷、地裂缝等地质灾害等影响区内岩质边坡稳定性的因素的发育现状及现有防治的调查研究,并分析了地震、降雨、露天和地下开挖对边坡稳定性的影响.得出结论有:①崩塌及其隐患(危岩)是宜昌磷矿最主要的地质灾害,其次为地面塌陷和地裂缝,滑坡和泥石流较少.②地下采空区变形是引发地面塌陷和地裂缝的主要原因,也是引发崩塌危岩的重要原因;泥石流以沟谷型泥石流为主,采矿产生的固体废弃物可作为泥石流的物源,采空区回填、修建拦渣坝是预防其充当物源的主要措施.③影响岩质边坡稳定的因素包括地质因素、自然因素和人为因素等.④露天开挖时,在坡角不变时,稳定性系数随坡高的增大而减小;开挖高陡边坡所能形成的最大坡高约为460m.⑤当巷道位于边坡内部时,随着开挖范围的扩大,稳定性系数逐渐减小.
통과대의창린광광구내붕탑、활파、니석류、지면탑함、지렬봉등지질재해등영향구내암질변파은정성적인소적발육현상급현유방치적조사연구,병분석료지진、강우、로천화지하개알대변파은정성적영향.득출결론유:①붕탑급기은환(위암)시의창린광최주요적지질재해,기차위지면탑함화지렬봉,활파화니석류교소.②지하채공구변형시인발지면탑함화지렬봉적주요원인,야시인발붕탑위암적중요원인;니석류이구곡형니석류위주,채광산생적고체폐기물가작위니석류적물원,채공구회전、수건란사패시예방기충당물원적주요조시.③영향암질변파은정적인소포괄지질인소、자연인소화인위인소등.④로천개알시,재파각불변시,은정성계수수파고적증대이감소;개알고두변파소능형성적최대파고약위460m.⑤당항도위우변파내부시,수착개알범위적확대,은정성계수축점감소.
The occurrence situation as well as the present prevention and control measures of rock fall, landslide, debris flow, ground collapse and fracture at Yichang phosphate area is introduced. At the same time, the effect factors of rock slope stability with the effect of earthquake, rainfall, open-air and underground mining on slope stability are summarized. Some conclusion can be reached. Firstly, rock fall is the main geological hazard, secondly for ground collapse and fracture. Landslide and debris flow are less. Secondly, The mined-out area deformation is the important reason that rock fall, ground collapse and fracture are induced. The main type of debris flow is gully debris flow. Solid waste can become debris flow provenance, and backfilling mined-out area and building debris retaining dams are the main prevention measures. Thirdly, stability influence factors of rocky slope includes geological factor, natural factor and human factor. Fourthly, stability coefficient decreases with the slope height increasing in the condition of open excavation and the same slope angle, and the maximum of high and steep slope height is about 460m. The stability coefficient decreases gradually with the excavation rang extension in the condition that shaft and tunnel locate in the slope body.