摘要
黄土丘陵沟壑区挖填造地工程会遇到众多岩土工程问题。为保证类似工程建设的安全,避免相关工程事故的发生,依托某黄土丘陵沟壑区挖填造地工程实践,归纳了挖填造地工程前原场地勘察要点、研究方法和评价思路,分析了黄土丘陵沟壑区挖填造地工程面临的主要工程地质问题,并给出了建议措施。结果表明:填方区勘察重点为湿陷性黄土和其它覆盖土层的分布以及在高压力条件下工程性质,挖方区勘察重点为土石材料工程性质和土石比;主要工程地质问题涉及地下水环境变化及其对工程的影响、高填方场地沉降与不均匀沉降、填挖边坡稳定性、湿陷性黄土地基增湿变形、软弱淤积土地基问题、不良地质作用等。
Land reclamation engineering in loess hilly and gully areas faces many geotechnical engineering problems.In order to ensure the safety of similar engineering construction and avoid the occurrence of related engineering accidents,based on the practice of land reclamation engineering in a loess hilly and gully area,the key points of original site survey,research methods and evaluation ideas before land reclamation engineering are summarized,the main engineering geological problems faced by land reclamation engineering in loess hilly and gully areas are analyzed,and suggested measures are given.The results show that the survey focus of the filling area is the distribution of collapsible loess and other overburden layers and their engineering properties under high pressure conditions,and the survey focus of the excavation area is the engineering properties of soil-rock materials and the soil-rock ratio;the main engineering geological problems involve changes in the groundwater environment and its impact on the project,settlement and uneven settlement of high filling sites,stability of fill and excavation slopes,wetting deformation of collapsible loess foundation,problems of soft siltation soil foundation and adverse geological effects,etc.
作者
梁谊
于永堂
唐浩
LIANG Yi;YU Yongtang;TANG Hao(Zhonglian Northwest Engineering Design and Research Institute Co.,Ltd.,Xi'an 710077,China;China Jikan Research Institute of Engineering Investigation and Design,Co.,Ltd.,Xi'an 710021,China;School of Civil Engineering,Xi'an University of Architecture and Technology,Xi'an 710055,China)
出处
《西北水电》
2024年第4期109-115,共7页
Northwest Hydropower
基金
国家自然科学基金项目(42072302)
陕西省秦创原“科学家+工程师”队伍建设项目(2022KXJ-086)
陕西省重点研发计划项目(2023-YBSF-499)
西安市秦创原“科学家+工程师”队伍建设项目(23KGDW0025-2023).
关键词
黄土
丘陵沟壑区
挖填造地工程
工程地质问题
原场地勘察
loess
hilly and gully area
excavation and filling land reclamation project
engineering geological problems
original site survey
