疏浚珊瑚礁岩特性及相互关系分析

摘要

Based on the geotechnical test data,geological survey data,marine hydrodynamic environment and sedimentary environment of the coral reef dredging construction,we studied the distribution characteristics,physical and mechanical characteristics and their interrelationships of dredged coral reef by means of induction,mathematical statistic and regression analysis.The results show that: 1)The coral reefs with high compressive strength and good integrity are mainly distributed in the fierce scouring zone of the outer reefs,which is commonly known as the dredging entrance gate.2)Dredging coral reefs have the characteristics of large changes of physical and mechanical indexes,which will bring difficulties to dredging construction.3)The regression coefficients of the experiential formula of the index of coral reef rocks are all above 0.699,which has a high correlation.The above research results provide technical support for bidding decision-making,process management and construction management of the coral reef dredging project and have high practical value.%基于珊瑚礁岩疏浚工程的土工试验测试数据、地质勘察资料、海洋水动力环境和沉积环境,应用归纳、数理统计和回归分析的方法,对疏浚珊瑚礁岩分布特征、物理力学特性及相互关系进行了研究分析.结果表明:1)抗压强度高和完整性好的珊瑚礁岩主要分布在外礁坪剧烈冲刷带,即为疏浚中常说的挖掘困难的口门地带.2)疏浚珊瑚礁岩具有物理力学指标变化范围大的特点,会给疏浚施工带来困难.3)珊瑚礁岩特性指标之间经验公式的回归系数均在0.699以上,具有较高相关关系.以上研究成果为珊瑚礁岩疏浚工程投标决策、工艺管理和施工管理等提供技术支持,具有较高的实际应用价值.