连续纤维丝生态护岸稳定性及其影响因素研究

The Stability of Continuous Filament Ecological Revetment and Its Influencing Factors

利用纤维丝补强土技术,将河道底泥作为河道生态护岸的原料,可实现底泥的资源化处置及河道护岸的生态化。选取锚杆粗细程度、锚杆安插密度及纤维丝添加量3项指标作为影响因素进行正交组合,通过自主研发的剪切拉力运动模型对纤维丝底泥补强结构进行剪切拉力试验,研究多因素耦合作用对底泥补强结构抗剪性能的影响并对其边坡稳定性进行评价,结果表明,3项因素从不同方面对底泥补强结构的抗剪性能起到了加强作用,在试验设计范围内,抗剪强度达到最大的组合为锚杆粗10 mm+锚杆数3根+加丝量1.3 kg/m^3。试验结果可为边坡稳定性计算及底泥资源化利用提供参考依据,并为复杂结构土壤的抗剪试验提供新的思路。

Using fiber reinforced soil technology, taking river sediment as the raw material of ecological revetment of channel, it can achieve sediment reclamation disposal and ecologicalization of river banks protection. The paper selected 3 indexes of anchor rod, anchor placement density and amount of fiber added as influencing factors to conduct orthogonal combination, studied the influence of multifactors coupling to shear performance of the sediment reinforcement structure and evaluated the slope stability through shear tension tests on reinforcement structure of the sediment fiber reinforced structure by the motion model of independent research and development. The outcomes show that the 3 factors have played a reinforcing role on shear performance of sediment reinforcement structure from different aspects. Within the scope of test and design, the maximum combination of the shear strength reached is anchor rod size 10 mm + 3 anchor rods + fiber addition 1.3 kg/m^3. The testing results can provide the basis for the calculation of slope stability and the utilization of sediment reclamation disposal and provide a new idea for the shear tests of soils with complex structure.