Faults With The Earthquake Response Of The Slope Characteristics And Seismic Strengthening Mechanism And Pattern

China is located in the central Pacific seismic zone and Eurasia seismic zone,especially in China’s western region have strong and high frequency seismicity, and inthese areas important large engineering distribution is more, engineering anti-seismicstability problem is particularly important.The range of expressway geologicaldisasters induced by the Wenchuan earthquake is more wide,its scale is larger,itsquantity is much more,its density is much higher,its type is more complex,and itscaused heavy losses, far beyond the unexpected. Especially in the quake zoneHengduan Mountains region along the road to the formation of a large number oflandslides, potentially unstable slopes and secondary disasters to create greatdifficulties for relief work and disaster road reconstruction.How to recognize thestrong earthquake zone expressway slope dynamic effect and earthquake-inducedslope instability mechanism, how to optimize strong earthquake zone expresswayslope comprehensive treatment technology, for earthquake disaster area expresswaydisaster management and reconstruction has the vital significance.This paper, basedon the above the facts,select GuangGan expressway slope fault belt as the researchobject, the use of numerical simulation method used in the design of expresswayslope,the slope ratio and slope dynamic response of the law and the framework of theanchor cable reinforcement system in a different anchor cab le spacing, were studiedunder different prestress conditions. And on this basis to GuangGan expressway slopefaults with dynamic stability evaluation and aseismatic measures research.Through the above research available:（1）GuangGan expressway fault zone slope influenced by faults, slope rockmass and broken, less intense, less stable;（2）Static calculations of homogeneous generalized models on fault slope showthat effects of height on displacements are obvious while effects of changes of slope ratios are not that much.（3）Dynamic calculations of homogeneous generalized models on fault slopeshow that effects of slope ratios on deformations are less while effects of height aremuch. It is same as static calculations.（4）Dynamic calculations show that reinforcement effect of anchor cable systemis not obvious and it is also not obvious by adjusting anchor cable length, angle,spacing and prestress.（5）In dynamic calculations, slope grouting is a good way of reinforcing faultslope. It is superior to optimize the anchor cable parameters and should be consideredin fault slope design.（6）The analyses of fault slope in GuangGanexpresswayshow that reinforcingeffect of homogeneous fault slope by adjusting anchor cable (pole) parameters is notobvious while grouting is better and feasible. On this basis, considering the conditionof difference rock mass quality, it shows that strengthen deep rock quality is good forfault slope stability.All these conclusions are reached by analyzing homogeneous cracked rocks. Inpractical engineering, rocks are influenced by weathering and unloading, its quality isdifferent from slope surface to inside. So, different calculating parameters should beselected in different parts of slope. It can be study in the future.