摘要
深圳地区内发育有震旦系、上泥盆系、石炭系、上三叠系、侏罗系、白垩系、第三系、第四系陆相冲洪积和海相淤积层,大范围被燕山早期、晚期花岗岩侵入,火山喷发岩覆盖。各类岩石受侵入接触变质,断裂热变质,加上受北东、北西、东西向三组主要断裂的切割破坏,使深圳地区地层变得十分复杂。在城市建设中,在各类建筑地基勘察、设计、施工中遇到各类工程地质问题,其中常见的工程地质问题主要有软土地基不均匀沉降,岩溶地面塌陷,砂页岩互层软弱地层的崩塌、滑坡及其对工程桩的影响,燕山晚期花岗岩中北西向断裂破碎带对工程桩的影响,北东向断裂破碎带对工程桩的影响等。
It develops Sinian period, upper Devonian, Carboniferous,upper Triassic, Jurassic, Cretaceous, Tertiary period Quaternary period Alluvial land facies and Marine sediment layers in Shenzhen area. It mostly is intruded yanshan early or late granite and covered with vesuvianite. A variety of rocks by Immergence contact metamorphism and fracture thermal metamorphism, and cutting damage by north-east, north-west, east-west fracture, which make the stratum of Shenzhen quite complex. In urban construction, in the investigation, design, construction of the foundation for all types of building we encountered various types of engineering geological problems, which mainly includes differential settlement in soft soil zone, Karst collapses, collapse and landslide of weak stratum in interbebed sandstone and shale, and impact of piles for collapse and landslide above, for the north-west and north-east brokenfracture zone of Late Yanshan granite, and so on.
出处
《广州建筑》
2009年第5期50-56,共7页
GUANGZHOU ARCHITECTURE
关键词
软土地基
岩溶
塌陷
软弱夹层
soft ground
Karst
collapse
soft interlayer
