Rockburst incubation process
Web5 Apr 2024 · Microseismic monitoring is a common monitoring tool in the mining production process; for supervising a huge amount of microseismic data, effective analysis tools are … Web27 Dec 2024 · The development process of rockburst in an elliptical cavern has been summarized, and the influence of the axis ratios on rockburst in an elliptical cavern are compared and analyzed. Moreover, the characteristics of rockbursts under the conditions of disturbance direction perpendicular to and parallel to the minor axis of the ellipse are …
Rockburst incubation process
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Web25 Dec 2012 · Dynamic control of the rockburst evolution process A ‘three-step’ strategy was proposed to reduce the risk of rockbursts ( Feng et al., 2012a ). The three steps are … The stress failure process of rock can be divided into four stages: (1) the closure of primary fractures in the rock, (2) the emergence and expansion of new fractures, (3) the bifurcation and penetration of fractures in different parts, and (4) rock failure instability. See more According to the wave theory, under the action of external load, the internal particle motion of the homogeneous material is the same, and the material does not generate elastic waves, while the particle motion of the non … See more The MS monitoring technology of Section IV tunnel adopted the Canadian ESG monitoring system, which consisted of three parts: sensor … See more Pickup of P-wave arrival time is the key technology of accurate source location. The ESG monitoring system adopts the long-short-time … See more In the Section IV tunnel, the signals collected by the MS monitoring system were complex and diverse. In addition to MS signals, there … See more
Web19 Jul 2024 · Taking the “11.28” rockburst occurred in the Jinping II Hydropower Station as the engineering background, the evolution mechanism of structure-type rockburst was studied in detail based on the particle flow code. WebThe dry rock samples were placed flat in a water tank, and water was first added to 1/4 of the height of the experiment piece. Water was added at intervals of 2 h, until the rock sample was completely immersed in water. The samples were taken out after 12 h and made into water rock samples.
Web8 Nov 2024 · The rockburst incubation mechanism refers to the evolution of the mechanism (tensile failure, shear failure) related to the rockburst incubation process. In the process of rockburst failure under different … WebFocusing on the development process of rockbursts,new development of key aspects is addressed in this paper. First of all,elaborations were made on rockburst …
WebApproaches for dealing with rock bursts can be divided into two categories: tactical measures, which can be taken locally and at short notice in response to a heightened level of rock burst hazard, and strategic measures, which must be integrated into the mine design process and long-term planning. [2] Tactical measures [ edit]
WebIn the process of earthquake incubation, a series of characteristics such as ground motion, seismic activity, stress field distribution, and pore water pressure distribution in the … flight 4368Web1 Sep 2024 · Rockbursts normally occur in mining operations and in civil works. The most common phenomenon is strainbursting, although buckling may also occur. In addition, impact-induced rockbursts can occur in less stressed rock formations, caused by blasting and excavation of adjacent cavities. chemical composition of formaldehydeWeb12 Sep 2024 · The established RS-TOPSIS method was applied for rockburst prediction in deep mines and metal mines. Peng et al. 23 used a real-coded GA to select the optimal support vector machine (SVM) model... chemical composition of fishWeb1 Jun 2024 · This process simulated the stress adjustment of the surrounding rock after excavation unloading. In this process, a step loading method (with a stress increment of 2.0 MPa and maintaining the stress for approximately 1 min) was used to load until the sidewall of the specimen exhibited evident failure and then maintained for a period. flight 4369Web1 Feb 2024 · The evolution process of rockburst is highlighted, as well as the microscopic observation based on the scanning electron microscope (SEM) measurements. Then, the influence of the structural plane is summarized and … flight 4396Web19 Jul 2024 · Taking the “11.28” rockburst occurred in the Jinping II Hydropower Station as the engineering background, the evolution mechanism of structure-type rockburst was … flight 4365 southwest statusWeb15 Dec 2024 · From the energy point of view, the energy evolution of rockburst is mainly divided into two stages: energy accumulation and energy dissipation. The occurrence of rockburst is energy release. From the stress point of view, rockburst occurs at the pre-peak stage, while rockburst occurs at the post peak stage, as shown in Fig. 3.1. Fig. 3.1 flight 4382