Cutting Slope Quasi Presplit Blasting Technology Research

In a large number of Earth and rock blasting works,If the final slope are in strict accordance with blasting process and technical requirements of the standard implementation, It would be a significant increase in the cost of project. However, for important and rock blasting works with blasting is necessary, As important and hydroelectric projects, special projects, the implementation can ensure safe and reliable operation of the project and use, significantly reduces the slope of spalling, landslide and the rolling stones and debris flow, and other disasters and ultimately achieve slope or wall smooth, stable effect. If Rock Blasting for road blasting technology improvements, and to close the basic requirements of the technology and design, construction specifications, will greatly reduce the cost of the blasting, but also can improve the construction schedule. Therefore, the use of the existing blasting and blast theory, explosive material on blasting process improvement, on the slope of the bursting of the implementation that meets a certain index requirements and reduce the cost of blasting technique known as prospective blasting.This paper studies the prospective presplit blasting effect in the three largest factor: slow punching and advance the line density, pre-splitting stage 2 post-ocular surgery spacing, not match-mismatch coefficient, and by using the dynamic finite element analysis software ANSYS/LS-DYNA, set up two pre hole blasting model, the numerical simulation analysis of rock stress out, according to the size of the rock stress to judge the extent of damage, then determines a reasonable expectant pre-splitting blast parameters, and to experiment verification, get the exact quasi presplit blasting design parameters for similar construction reasonable design guidance.