辽东湾海岸侵蚀病害模式及其等级分布

为查清辽东湾海岸侵蚀的发育类型及等级分布规律，选择辽东湾典型海岸段为重点研究区域，结合现场调查及相关资料，对辽东湾海岸侵蚀情况进行了细致研究，结果表明，辽东湾海岸侵蚀按病害模式来分，可分为冲磨蚀型、浪坎坍塌型、块状崩落型、岩溶凹陷型、界面滑移型5种类型；按蚀淤程度划分，可分为严重侵蚀、强侵蚀、侵蚀、微侵蚀、稳定5种等级。其中，沙质海岸侵蚀模式以浪坎坍塌型为主,基岩海岸侵蚀模式主要表现为块状崩落型和岩溶凹陷型，粉沙淤泥质海岸侵蚀模式以冲磨蚀型为主。这有助于辽东湾海岸带减灾、防灾目标的实现，为海岸侵蚀灾害的进一步研究打下基础。

Disease pattern and grade distribution of coast erosion in Liaodong bay

To identify distribution and development of coast erosion in Liaodong bay, erosion situations of typical coastal zone are studied on the basis of field investigation data. The results show that according to erosion landform features, coast erosion in Liaodong bay can be divided into five patterns: washing and abrasion type, wave collapse type, block avalanche type, karst depression type, interface slip type; according to degree of corrosion and siltation, coast erosion in Liaodong bay can be divided into five grades: serious erosion, intensive erosion, erosion, micro-erosion, stability. Sandy coast is eroded mainly in wave collapse type, rocky coast is eroded mainly in block avalanche type and karst depression type, and silty mud coast is eroded mainly in washing and abrasion type. Investigation on disease pattern and grade distribution of coast erosion is helpful to prevention of coastal zone in Liaodong bay.