横泉水库坝体强夯试验研究

Experiment Research on Dynamic Consolidation of Hengquan Reservoir Dam

对横泉水库坝体进行了强夯试验,并对其试验数据进行了整理,然后进行了理论分析,讨论了强夯的加固效果、强夯的有效加固深度、夯后填土沉陷性等。证明了采用合理的参数与施工工艺,对高填土用高能级强夯能达到10～13 m的有效加固深度,影响深度可达17 m,而且土体的压缩性、湿陷性、不均匀性都有很大改善,加固效果是很理想的。对于坝体填土,应适当控制含水量,来减少或防止夯后湿陷。

The paper arranges experiment data,carries on theory analysis of HengQuan reservoir dam,and discussed the reinforcement effect and valid reinforcement depth of dynamic consolidation as well as the affecting factors of filling-up soil settlement after tamping.It testifies if reasonable parameters and technological process are employed to high filling-up soil,the valid reinforcement depth of 10 ～ 13m and affected depth of 17m can be attained by using the high energy dynamic compaction.Soil’s condensation,collapse and uneven quality are all improved.So the reinforcement effect is satisfying.As to dam filling-up soil,water content should be controlled to reduce or prevent collapse.