CAJ | 학술논문

滇藏铁路沿线滇藏交界段劈理化带是新近发现的与高山峡谷区河流岸坡密切相关的介于劈理与节理之间的密集破裂构造型式.我们对劈理化带进行了较全面的调查、测绘、统计和分析,由此得出,劈理化带呈带状断续分布,规模与河流岸坡规模有关,在金沙江和澜沧江岸坡地带规模巨大,并与微地貌关系密切.另外,"劈理"具有倾角陡、不均匀等特点,"劈理"走向往往与河流方向一致.劈理化带是在内、外动力相互作用下形成,内动力作用可以形成劈理化带,在内动力作用的基础上,河谷地带的外动力作用也可以形成劈理化带,内、外动力对劈理化带均有后期改造作用.拟建的滇藏铁路将通过许多劈理化带,那里将来可能产生铁路地基大变形、隧道和桥梁大变形、隧道冒顶、隧道渗漏和发生滑坡、崩塌、泥石流灾害.因此,在将来铁路等工程建设和运营中要采取针对性防治措施.
전장철로연선전장교계단벽이화대시신근발현적여고산협곡구하류안파밀절상관적개우벽리여절리지간적밀집파렬구조형식.아문대벽이화대진행료교전면적조사、측회、통계화분석,유차득출,벽이화대정대상단속분포,규모여하류안파규모유관,재금사강화란창강안파지대규모거대,병여미지모관계밀절.령외,"벽리"구유경각두、불균균등특점,"벽리"주향왕왕여하류방향일치.벽이화대시재내、외동력상호작용하형성,내동력작용가이형성벽이화대,재내동력작용적기출상,하곡지대적외동력작용야가이형성벽이화대,내、외동력대벽이화대균유후기개조작용.의건적전장철로장통과허다벽이화대,나리장래가능산생철로지기대변형、수도화교량대변형、수도모정、수도삼루화발생활파、붕탑、니석류재해.인차,재장래철로등공정건설화운영중요채취침대성방치조시.
The newly discovered cleavable zone along the Yunnan-Tibet border sector of the Yunnan-Tibet railway line is a transitional tectonic type with close-spaced fractures between the cleavage type and the joint type, which is closely related to the river slope in the gorge area between high mountains. Based on relatively comprehensive survey, mapping and statistic analysis, the authors have reached the conclusion that the cleavable zone is distrib-uted in the discontinuous banded form, with its scale in relation to the river slope scale, so there exist large-sized zones along the Jinsha River and the Lancang River, and that the cleavable zone is in connection with the local micro-landform. In addition, the "cleavage" in the zone is characterized by steep dip angle and uneven interval, with its strike usually paralleled to the local river orientation. The zone was generated by the interaction between the endokinetic process and the exogenous process. This means that the cleavable zone could be generated by the endokinetic process, and that on the basis of the endokinetic process, the cleavable zone along rivers could also be formed by the exogenous process. Furthermore, the cleavable zone could be altered by later endokinetic or ex-ogenous process. The scheduled Yunnan-Tibet Railway will pass through many cleavable zones, and there might oc-cur serious deformation of railway foundation, tunnel and bridge, collapse over tunnel, percolation around tunnel, and geohazards such as landslide, collapse and debris flow. It is suggested that we should take appropriate control meas-ures to tackle these problems in the construction and operation processes of the railway and other projects.