【摘要】：本文通過土工實驗分析,發(fā)現(xiàn)河北南堡-曹妃甸海域沉積物主要由淤泥、粉砂、黏土和粉土組成,約占總沉積物的85%,另含有少量的淤泥質(zhì)黏土、粉質(zhì)黏土、細砂和中砂。綜合歸納南堡-曹妃甸海域的工程地質(zhì)條件,根據(jù)影響研究區(qū)工程地質(zhì)條件差異性最突出的因素即海底地形地貌、潛在地質(zhì)災(zāi)害分布,結(jié)合海底土質(zhì)類型及其物理力學(xué)性質(zhì)等條件,將研究區(qū)劃為4個工程地質(zhì)區(qū),分別為近岸水下岸坡混合土工程地質(zhì)區(qū)(Ⅰ)、侵蝕平原、洼地砂質(zhì)土工程地質(zhì)區(qū)(Ⅱ)、侵蝕洼地混合土工程地質(zhì)區(qū)(Ⅲ)、陸架堆積平原細粒土工程地質(zhì)區(qū)(Ⅳ)。通過海洋環(huán)境因素、災(zāi)害地質(zhì)條件、地震活動性、海底土體穩(wěn)定性等方面對各工程地質(zhì)區(qū)進行海底穩(wěn)定性評價,4個工程地質(zhì)區(qū)的穩(wěn)定性分別為Ⅰ區(qū):不穩(wěn)定區(qū);Ⅱ區(qū):較穩(wěn)定區(qū);Ⅲ區(qū):較不穩(wěn)定區(qū);Ⅳ區(qū):穩(wěn)定區(qū)。研究成果對該地區(qū)的海底工程建設(shè)和防災(zāi)減災(zāi)具有重要的指導(dǎo)意義。
[Abstract]:Based on the analysis of geotechnical experiments, it is found that the sediments in the Nanbao-Caofeidian area of Hebei Province are mainly composed of silt, clay and silt, which account for about 85% of the total sediment, and also contain a small amount of silt clay, silty clay, fine sand and medium sand. The engineering geological conditions in Nanbao Caofeidian sea area are summarized synthetically. According to the most prominent factors affecting the difference of engineering geological conditions in the study area, namely, the submarine topography and geomorphology, the distribution of potential geological hazards, According to the conditions of submarine soil types and physical and mechanical properties, the study is divided into four engineering geological areas, one is the engineering geological area of the mixed soil on the nearshore underwater bank slope (鈪，

本文編號：2151097