Rockburst potential
Web14 Apr 2024 · Energy continues to accumulate in potential rockburst area, and the rockburst risk further increases, this stage is the further crack accumulation stage. When L = 0.7D–0.9D, under the influence of excavation unloading, \(\sigma_{3}\) further decreases. The normal stress of fault is relatively low, and even the cohesion is lost, leading to the ...
Rockburst potential
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Web14 Apr 2024 · Energy continues to accumulate in potential rockburst area, and the rockburst risk further increases, this stage is the further crack accumulation stage. When L = … Web24 Jun 2024 · In particular, the rockburst hazard – a sudden failure of rocks accompanied with violent ejections of rock fragments and rapid release of energy stored in highly …
WebPreparing a Rockburst Damage Potential Model for the site, at Kanowna Belle as a reference to future Seismic Hazard. Working out appropriate re-entry times for stope blasts. … Web× Close. The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such …
Web利用自主研发的真三轴岩爆试验系统,以红色粗晶花岗岩作为岩石长方体试件,开展了不同加载速率的应变型岩爆室内模拟试验,在提出一种岩爆碎块单位面积表面能测定方法的基础上, … Web* Developing a New Rockburst Damage Potential (RDP) Index for Seismically Active Underground Mines (In-Progress) *. Developing an Expert System for Rock Mass …
Web14 Mar 2024 · A rockburst is a dynamic disaster that may result in considerable damage to mines and pose a threat to personnel safety. Accurately predicting rockburst intensity is critical for ensuring mine safety and reducing economic losses. First, based on the primary parameters that impact rockburst occurrence, the uniaxial compressive strength (σc), …
Rockburst (RB) is known as one of the deadliest and most destructive geotechnical events in deep underground spaces under high stresses. The complexity of the RB phenomenon and uncertainty arising from variability in geotechnical and geomechanical conditions makes its prediction very difficult. See more To validate the developed mathematical relation, four evaluation criteria including accuracy (AC), sensitivity (SE), specificity (SP), and Matthew’s correlation coefficient (MCC) were used. … See more The receiver operating characteristics (ROC) curve is another tool for assessment of models in classification problems. ROC illustrates the trade-off between the true positive rate (sensitivity) and the false positive … See more For comprehensive evaluation of the developed relation, it was compared with the recently developed models in the literature for prediction of RB potential. This comparison is … See more In this section, the performance of developed relation is validated using testing datasets that have not been used during the process of … See more rabbit\\u0027s ztWeb21 Sep 2024 · Rockburst potential of granite under thermal-mechanical coupled conditions was evaluated by an energy index. Granite strength decreased with increasing … rabbit\\u0027s zuWeb12 Apr 2024 · classify rockburst potential in deep openings with improved accuracy. A different number of genes (from 1 to 4) and linking functions (e. g., addition, extraction, multiplication and division) in the GEP model were also. evaluated for development of the GEP-PSO models. Geotechnical and constructive factors of 246 rockburst rabbit\u0027s znWeb26 Jun 2024 · Rockburst is a common dynamic disaster in deep underground engineering. To accurately predict rockburst intensity grade, this study proposes a novel rockburst … dorake6Web5 May 2024 · In underground rock engineering, a rockburst is a type of dynamic geological disaster. It is a dynamic instability phenomenon that occurs when a rock mass or … rabbit\\u0027s zyWebthe prediction of rockburst potential, e.g., strain energy storage index (Wet) proposed by [19], defined as the ratio of stored strain energy (Wsp) to dissipated strain energy (Wst). … rabbit web dizi izleWeb30 Jan 2024 · Accurate prediction of short-term rockburst has a significant role in improving the safety of workers in mining and geotechnical projects. The rockburst occurrence is nonlinearly correlated with its influencing factors that guarantee imprecise predicting results by employing the traditional methods. dora kastiop