甘肃南部坪定-化马断裂带滑坡变形特征及其防治

以坪定-化马断裂带泄流坡滑坡为例，通过野外调查和变形监测资料分析，深入剖析了断裂带滑坡变形特征和形成机理，提出了断裂带滑坡的防治方法和治理措施。断裂带滑坡一般为大型—巨型滑坡，由多个次级滑坡体组成，历史上曾多次活动。变形监测资料表明，泄流坡滑坡变形目前处于匀速蠕变阶段，呈现蠕滑-塑流拉裂-土（石）流的变形破坏特点。断裂破碎带及其现今活动为滑坡长期蠕滑变形提供了物质基础，而降雨是滑坡体失稳下滑的主要诱发因素。断裂带滑坡按岩性可归类为松散堆积层滑坡。因此，对断裂带滑坡的防治应以防为主，以治为辅，即开展滑坡变形实时监测和群测群防，辅以滑坡表面排水、坡脚压载等措施，以减缓或防止泄流坡滑坡再次形成灾害。

The deformation characteristics of the landslide along Pingding-Huama active fault zone and its prevention and control

Taking Xieliupo landslide developed in Pingding-Huama fault zone as an example, this paper deals in detail with the deformation characteristics and formation mechanism, and proposes the prevention and control method and treatment measures on the basis of field investigation and analysis of deformation monitoring data of fault zone landslides. A fault zone landslide is generally a large or giant landslide, which consists of quite a few secondary landslides. The landslide took place time after time historically. According to the measurement data obtained in recent years, Xieliupo landslide deformation occurs as creeping - tensile fracture (plastic flow tensile fracture) - soil (or rock) debris flow, which is at the stage of constant speed creep deformation at present. The long-term activity of Pingding-Huama fault and fracture zone has provided material basis of landslides activity for prolonged creep-slip; however, rainfall is the main factor that triggers these landslides, resulting in the loss of stability. Therefore, the control of the fault zone landslide should be focused on prevention, supplemented by treatment. That is, the landslide control should be based on real-time monitoring and mass prediction, supplemented by disaster prevention composed of landslide surface dewatering and slope toe loading. The control could slow down or prevent the landslide from inducing disaster again.