An algorithm of blasting parameters for tunnel with complex surrounding rock based on close-range undercrossing roadbed
Traditionally, when the algorithm of tunnel blasting parameter based on theory of damage mechanics and explosive theory was used to calculate blasting parameters, the complexity of tunnel surrounding rock was not considered and the result was not optimized, which led to the low precision of parameter calculation result. The algorithm of blasting parameters for complex surrounding rock tunnels in close underground subgrade is studied based on genetic support vector regression. By calculating the internal stress of complex surrounding rock, the vibration velocity parameters affecting the stability of surrounding rock are obtained. The parameter calculation model was established by using ANSYS-DYNA numerical simulation software. The model is also used to obtain pressure parameters for complex surrounding rock. A coupling method based on genetic support vector regression is used for parameter optimization. Experimental results show that the proposed method has high accuracy and practicability. It can quickly calculate the parameter of tunnel blasting.
Keywords
complex surrounding rock,
tunnel blasting,
parameter calculation,
stability of surrounding rock,
parameter of vibration velocity,
support vector regressionAuthors
| Li-Cai Zhao | National Taiwan University of Science and Technology | zhaolicai1314@163.com |
| Shi-Shuenn Chen | National Taiwan University of Science and Technology | sschen@mail.ntust.edu.tw |
Всего: 2
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