Abstract The progressive microcracking processes in a burst-prone Class II rock, Kuru granite, and non-burst-prone I Fauske marble were investigated, aiming to reveal the physics of rock burst difference burst-proneness rocks. cylindrical specimens granite uniaxially loaded various levels both pre- post-peak stages, which was monitored by Acoustic emission technique. After that, thin sections p...

Rock bursts are often encountered in coal mines worldwide [...]

Rock bolts have been widely used as rock reinforcing members in underground coal mine roadways and tunnels. Failures of rock bolts occur as a result of overloading, corrosion, seismic burst and bad grouting, leading to catastrophic economic and personnel losses. Monitoring the health condition of the rock bolts plays an important role in ensuring the safe operation of underground mines. This wo...

Rock burst is one of the most serious dynamic disasters in process coal resources mining, order to study its occurrence mechanism and characteristics impact on roadways. Based No. 25110 working face Yuejin Mine Yi Coal 21032 return air uphill event Qianqiu Mine, combined with geological conditions, shock location, source waveform, this paper uses numerical simulation inverse response roadway su...

Abstract Rock-burst is one of the most serious risks associated with hard rock tunnelling and mining at high depths. Monitoring acoustic emissions emitted by rock-mass during excavation their interpretation now permits early assessment failure events makes safe management construction works possible. A reliable set-up alarm threshold thus fundamental for correct implementation procedures planne...

According to the universal law of thermodynamics, failure any substance is closely related its energy change. Understanding strain and rock burst tendency or coal under different loading rates critical in many geological projects, such as mining, tunneling, other underground engineering project. The mechanical evolution characteristics coal-rock combined sample uniaxial compression were numeric...

Rock-burst is a common failure in hard rock related projects civil and mining construction therefore, proper classification prediction of this phenomenon interest. This research presents the development optimized naïve Bayes models, predicting rock-burst failures underground projects. The models were using four weight optimization techniques including forward, backward, particle swarm optimizat...