The Influence Of Groundwater On Slope Stability In ?Area Of A Disposal Site

The role is often closely related to the occurrence of landslide and groundwater,groundwater occurrence, migration is one of the natural factors affecting landslide stability. After inspection, more than 90% soil slope destruction and groundwater on the most landslides in China are under the condition of rainfall, surface water infiltration caused by groundwater changes, induced landslides therefore, to identify the landslide geological characteristics of hydrology, analysis of the impact of groundwater on slope stability, provide an important theoretical reference for landslide control. And the scientific and rational layout of drainage engineering, and to evaluate the effect of drainage engineering, to landslide control economy, safety,but also has important practical significance for landslide protection and renovation project. The main research contents of this paper include the following aspects:(1) As deeply study of the slope slide and hydrogeological characteristics,groundwater types of pore water in the loose rock, weathering fissure water and structural fracture water accepts rainfall recharge and adjacent hydrological geological unit lateral groundwater recharge, along the loose rock pore or bedrock fissure advantage development direction of runoff, in spring(effluent) exposed excretion. In the slope water rich zone and a plurality of rich water district development, a direct impact on slope rock and soil structure, reduce the stability.(2) According to the slope water rich zone characteristics, proposed to implement the ground surface drainage, including drainage ditches, down the ditch,focuses on the design and layout of the underground drainage works, mainly including blind ditch, water, drain the corridor or drainage ditch and essentially reduce slope water level, improve the stability of the slope.(3) Through the hydro geological investigation results, I area slope hydrogeology model was generalized. Using Modelmuse simulation analysis of governance behind the natural slope, storm conditions of seepage field characteristics,the combination of the different drainage engineering research under the different conditions of groundwater seepage of the changes in the characteristics of the flowfield, according to the results, blind ditch, water, drainage wells corridor combined drainage effect better, can fully meet the governance effect.(4) After water equilibrium simulation shows that, the conditions of groundwater balance, the groundwater is the main source of income on rainfall and near the hydrogeological unit groundwater recharge, the main expenditure way is through drainage well of the gallery and drainage ditch, blind ditch, water excretion.Thus, water measures in reduced plays a key role in the underground water level of the slope.