At present, the drill-and-blast method is still one of main construction means in road tunnel excavation process. When penetrates underneath sensitive structures such as high-voltage transmission towers, blasting and supporting parameters must be strictly controlled to ensure stability safety surface structures. In this paper, numerical simulations based on a large-section shallow buried projec...

Blast charge initiation procedures have a significant impact on both mining safety and production rates. In this study, the inventory benefit of an electric system was investigated to assess its influence fragmentation blast-induced damages. The WipFrag software used examine size distribution productivity 12 small-scale blasts initiated by nonelectric detonators. All blast rounds were with plai...

A computer-aided blast design collsultanL system has been developed. The software consists of two modules: one uses theoretical and empirical formulae and procedures to design a blast based on user supplied geological Hnd mechanical data, while the other is an expert syslem that analY7.es blast vibration problems and recom mends remedial action using k.nowledge based rules. The system is curren...

The present paper mainly with deals the prediction of safe charge of explosive used per delay (Qmax) using artificial neural network (ANN) incorporating peak particle velocity (PPV) and distance between blast face to monitoring point (D). 120 blast vibration data sets were monitored at different vulnerable and strategic locations in and around a major coal producing opencast coal mines in India...

Blasting is common in the coal industry to remove rock overburden so that the exposed coal can be mechanically excavated. The ground vibrations and air blast produced by blasting are often felt by residents surrounding the mines. There has been a trend for regulatory authorities, especially those concerned with the environment, to impose low limits on blast vibration levels in response to commu...

the steger and warming flux vector splitting implicit scheme is used to numerically solve two dimensional reynolds averaged navier–stokes (rans) equations governing the vortex induced vibration of a flexible riser laterally supported by a spring and a damper. the k–ε model is used as turbulence model to simulate the turbulent flow in the wake of the riser. to update the new position of the rise...

Prediction and parameter optimization are effective methods for mine personnel to control blast-induced ground vibration. However, the challenge of prediction lies in multi-factor multi-effect nature open-pit blasting. This study proposes a hybrid intelligent model predict vibrations using least-squares support vector machine (LSSVM) optimized by particle swarm algorithm (PSO). Meanwhile, multi...

Earthquake mainly produces Pand Swave at the point of occurrence. Mining site that mines the geological material from earth often makes the quarry blasts on the surface of earth to accelerate the mining process instead of drilling. This mining blast also causes the same wave as the earthquake. It is very difficult to differentiate between two of them as the characteristics of waves produced by ...