Shaanxi Province Highway Earthquake Secondary Disasters And Prevention Of Distribution Countermeasures Study

Highway earthquake geological disaster not only for reconstruction work brought a very negativeimpact, but also brought great losses to property and lives of the people. This article attempts tosummarize the distribution of earthquake disaster earthquake disaster in Shaanxi Province Highway, thedistribution of the risk of secondary disasters, trying to put forward specific prevention strategies aimedat road network for the Shaanxi Province planning, highways, earthquake disaster prevention andconservation to provide guidance.First article through Shaanxi Province Highway earthquake disasters investigation and analysis,research, summarized the distribution of earthquake disaster in Shaanxi Province Highway from the threeaspects of the slope geology, landslides and embankment earthquake damage, disaster developmentfeatures and hazard the main factors.Followed by natural factors of peak ground acceleration of earthquakes, rainfall, slope, rock typeand surface cutting density completed highway earthquake disaster risk impact factor, based on GIS inShaanxi Province Highway earthquake hazard evaluation factors data analysis and mapping, Highwayearthquake hazard spatial analysis and risk classification.Shaanxi Province Highway earthquake hazard partition on the basis of, respectively, from therational choice of the route, the embankment retaining structure design and foundation treatment andscheduling of traffic organization three ways proposed highway earthquake disaster preventioncountermeasures.Line selection of a reasonable choice is to improve the seismic performance of the subgrade, thehighway route of the earthquake zone must follow the principle of prevention, deepening the lines,geological survey work, to avoid around Bad Geological Section, longitudinal slope of the equilibriumline to reduce the high fill ferret out the roadbed, to avoid around the cliffs, as far as possible so that theline adopted in the low intensity and seismic favorable Lot.The embankment retaining structure design and foundation treatment is an important way toimprove highway embankment earthquake. Seismic damage analysis of a large number of road retainingworks at home and abroad, combined with field investigation of the earthquake disaster of Shaanxihighway roadbed, the study found: the structure or pile and wall of the pile anchor, anchor, reinforcedsoil retaining wall, soil nail wall anchor retaining walls light flexible roadbed, retaining structures,seismic safety performance is superior to ordinary gravity retaining wall. In addition, the embankmentfill, compaction, embankment design form the foundation situation and other factors on the seismicstability of embankment in close contact.Emergency grab program is a response to the earthquake disaster action programs, a guide to action,action-oriented, traffic organization scheduling scheduling management system, has important practicalvalue of the burst of earthquake disaster.Thesis research on the regional road network planning, road earthquake disaster prevention, roadmaintenance, has an important role in guiding and reference value.