桓仁单支墩大头坝位移及渗流监测分析

Displacement and Seepage Monitoring Analysis for Huanren Massive-head Single-buttress Dam

单支墩大头坝是比较少见的一种坝型,劈头裂缝及坝体侧向稳定是影响大坝稳定性的重要问题。文中对中国东北唯一的一座单支墩大头坝的位移和渗流特性进行了分析评价,认为大坝的位移和渗流稳定性正常,劈头裂缝稳定,但第12层岩石地下水压力较高,可能成为影响坝基稳定性潜在的不利因素。

The massive-head single-buttress dam is a rare type of dams. Vertical cracks at the upriver surface of buttresses and their side direction stability are important problems that affect the stability of the dam. The characteristics of the displacement and seepage of the only massive-head single-buttress dam in Northeast China are analyzed and appraised. It is considered that the stability of displacement and seepage of the dam is normal and the cracks are stable, but the ground water pressure in the 12th rock layer is high, which may be an unfavourable factor affecting the stability of the base of the dam.