河南省涡河下游堤防工程质量评价

Quality Evaluation of Dike Engineering in the Lower Reaches of Guo River in Henan Province

通过对河南省涡河下游堤防质量检查,取样进行了大量的检测试验和现场水文地质调查取证和试验工作,通过试验数据分析和现场地质调查,指出了涡河下游段堤防现阶段运行中存在的塌岸、渗水等不良工程地质问题。其中三所楼至马厂段堤身填土岩性不均一,堤防断断续续不连接,堤顶一般高低不平。太康附近堤顶可见塌陷。总体来看,填筑质量较差;桩号74+000~80+500段填土岩性为低液限粘土,天然干密度小,填土质量差;马厂~位桥段填土岩性以低液限粘土为主,填筑质量一般较好,但桩号146+000~157+700段填土岩性为低液限粉土,填筑质量不均匀,部分较差。并对不良地质条件进行了评价,提出涡河堤防治理的意见与建议,对工程设计、施工和管理具有一定的指导意义。

Through the quality inspection of the dike in the lower reaches of Guo River in Henan Province, a large number of tests and field hydrogeological investigation and evidence collection and experimental work have been carried out. Based on the analysis of test data and field geological survey, the bad engineering geological problems such as bank collapse and water seepage in the current operation of the dike in the lower reaches of Guo River are pointed out. One section, from Sansuolou to Machang, dike body filling lithology is uneven. The dike is intermittently not connected, and the top of the dike is generally uneven. The top of the dike near Taikang can be seen collapsing. In general, the filling quality is poor. The lithology of filling soil of pile in section 74+000 ~ 80+500is low liquid limit clay, with low natural dry density and poor filling quality. The fillong lithology of the bridge section from Machang to Weiqiao is mainly low liquid limit clay, and the filling quality is generally good, but the lithology of the filling lithology of the bridge section from 146+000 to 157+700 is low liquid limit silt, and the filling quality is uneven and some of them are poor. In addition, the unfavorable geological conditions are evaluated, and the opinions and suggestions on the treatment of Guo River dike are put forward,which have certain guiding significance for the engineering design, construction and management.