摘要
[目的]查明拟建设场地内基本地质情况、水文地质特征、地震情况及周边不良地质情况并提出治理建议,确定拟建场地内岩土体力学特征,为工程建设选取合适持力层。[方法]通过钻探工程、取岩土样和水样进行测试,分析场地稳定性、地下水腐蚀性,获取岩土体物理力学参数。[结果]钻探结果表明,场地内地层由上到下可分为第四系残坡积层、强风化泥岩层、中风化泥岩层等3个层位;水样测试结果表明,场地内地下水腐蚀性微弱;岩样测试结果表明中风化层泥岩承载力特征值为2 408.4 KPa,承载力较好。[结论]拟建场地整体稳定性较好,适宜开展工程建设;地下水位在建设最低标高以下,可不考虑抗浮设计;建议选取中风化泥岩作为持力层。
[Purposes]In order to find out the basic geological conditions,hydrogeological characteristics,structural and seismic conditions in the proposed construction site,find out the adverse geological condi-tions in and around the proposed site and put forward treatment suggestions,determine the geotechnical physical characteristics in the proposed site,and select the appropriate bearing layer for the engineering construction.[Methods]Through drilling engineering,taking rock and soil samples and water samples for testing,the stability of the site and the corrosion of groundwater are analyzed,and the physical and me-chanical parameters of rock and soil are obtained.[Findings]The drilling shows that the inner layer of the site can be divided into three layers from top to bottom:quaternary residual slope layer,heavily-weathered mudstone layer and moderately-weathered mudstone layer.The test results of water samples show that the corrosion of water inside the site is weak.The rock sample test results show that the bear-ing capacity characteristic value of moderately-weathered mudstone is 2408.4 KPa,and the bearing ca-pacity is good.[Conclusions]Through this work,it is found that the overall stability of the proposed site is good,and the project construction will be carried out.The groundwater level is below the lowest eleva-tion of the construction,the anti-floating design may not be considered;it is suggested to select moderately-weathered mudstone as the bearing layer.
作者
王源
吕雨生
王红利
WANG Yuan;LYU Yusheng;WANG Hongli(114 Geological Brigade of Guizhou Geological and Mineral Exploration and Development Bureau,Zunyi 563000,China;China Three Gorges Group Co.,Ltd.watershed hub operation management center,Yichang 443000,China)
出处
《河南科技》
2024年第22期109-113,共5页
Henan Science and Technology
关键词
岩土工程勘察
地下水
岩土测试
地基承载力
geotechnical engineering investigation
groundwater
geotechnical testing
foundation bearing capacity
