水生态修复抛石护岸工程试验研究

Experimental Study on Riprap Revetment Project for Water Ecological Restoration

以位于鄱阳县东北部的潼津水河道整治工程为例,对所在河道抛石护岸治理过程及效果进行了模型分析与过程模拟。结果表明,抛石是较为理想的护岸材料,对河床变形适应性强,且抛石护岸施工效果主要与块石料粒径、使用方量和岸坡覆盖率等有关;三层小颗粒石料不均匀铺护的护岸铺护效果明显优于块石不均匀铺护;对于水深大且流速快的河段严格按照设计要求抛投施工,而对于水深小且流速缓慢的河段,必须加强抛投过程控制,避免块石料堆积而影响抛填护岸效果。

Taking Tongjinshui River Training Project located in the northeast of Poyang County as an example,a model analysis and process simulation were conducted on the process and effect of riprap bank protection of the river channel.The results show that riprap is an ideal revetment material with strong adaptability to river bed deformation,and the construction effect of riprap revetment is mainly related to the particle size of block stone,volume of use and bank slope coverage.The effect of three layers of small granular stone uneven paving is obviously better than that of block stone uneven paving.For the river section with large water depth and fast flow rate,the throwing construction shall be carried out in strict accordance with the design requirements,while for the river section with small water depth and slow flow rate,the throwing process control must be strengthened to avoid the accumulation of block stones affecting the effect of throwing and filling bank protection.