Research On Digging Of Blasting On Damnification Of Rock Slope

Maintenance is very important of digging in high rock slope. We need keep well contour and reduce breach on digging of blasting in high rock slope for the sake of cutting down the maintenance and renovating. In practicing of blasting , Engineer of blasting design the scheme and parameter of blasting by the personal experience , project analogy and testing on analogical spot at present. this not only reduce effect of blasting but also increase the maintenance and renovating in the future.We research the digging of blasting in the Chu-Ning expressway high slope cutting of Anhui Province, factors of influence the parameter of blasting result and choose rational working procedure. On the basis of analysing mechanism of blasting , have probed into and confirmed various kinds of factors that influences the high slope to digging of blasting shaping quality and the stability. It confirm type by explosive, more minimum to resist lines, deep of hole , portholes arrange distance, coupling coefficient, line powder charge, intensity of rock, degree intact of rock and so on. It designs and tests the digging of blasting. EXP3850 and related speed sensor which produce in dynamic instrument Co., Ltd. of the department of Chengdu measure waves in blasting and gather , store and analyse the data of many ways. We draw the seismic wave propagates the law.Adopting the transient state motive force in the large-scale finite element software ANSYS to analyse ,We can grasp and analyse the damage course to the high slope dynamically , analyse the key damage position to the high slope, quantitative compute the displacement , speed , acceleration , main stress and size of shearing stress. The article takes Chu-Ning expressway high slope in Anhui Province as an example, has set up the two-dimentional number value of blasting and analysed models, adopt the plasticity finite element law of the non-linear ball to calculating the model has been calculated, surrender criterion and adopt the criterion of surrendering. The unit type selects PLANE2 for use, the total mark time step fetches 0.002 second long. Through analyzing, we learn of the displacement, main stress, shearing strength. It not only offer the reliable scientific basis on later stage in order to deserve, but also offer the reliable technical data for technology designer in the future. It help they designing more rational hole network parameter, improving the result of blasting, lessening the damage degree of digging, reducing the maintaining and working in later stage in slope. It has not only offered scientific basis on later stage in order to deserve the slope, but also offered the technical data for technology designer.