The paper presents the design of bridge blasting demolition scheme. methods has become preferred method for not only in war period but also where service life is exceeded. Compared with other method, evince more advantages as higher demolishing progress, lower cost and easier construction safety control. scheme contents position, parameters protections.

Blasting demolition plays an important role in building demolition, and numerical-simulation methods can facilitate the optimization of blasting-demolition schemes. To study influence delay-time differences between columns on blasting effect small-aspect-ratio reinforced concrete structures, a separated common node model structures was established through finite element numerical simulation sof...

Blasting is one of the primary aspects mining operations, and its environmental effects interfere with safety lives property. Therefore, it essential to accurately estimate impact blasting, i.e., peak particle velocity (PPV). In this study, a regular random forest (RF) model was developed using 102 blasting samples that were collected from an open granite mine. The inputs included six parameter...

In order to study the influence of various factors on construction safety shallow buried tunnels, a multifactor evaluation model consisting 9 indicators, such as tunnel size, depth, surrounding rock condition and management, is established from perspective 4M1E by combining characteristics borehole-blasting method. It combines advantages subjective weighting method AHP objective CRITIC, determi...

The research aims to investigate the failure characteristics of rock caused by blasting under high stress, explore energy generation and its transfer release in effects blasting. Physical experiments numerical simulations were performed. results showed that, as with AE time-series data, attenuation time activity increases number events, thereby decreasing overall stability samples. In terms spa...