In the process of coal mine production, rock burst accidents near faults occur frequently. order to further reveal induced mechanism fault slip burst, a numerical simulation method for dynamic calculation under influence mining is proposed, and law response characteristics stope are studied. The study shows that with working face getting closer fault, activity number high-energy microseismic ev...

Abstract Ground motions resulting from seismic waves are one of the main factors to trigger coal burst hazards in underground mines. motion induced dynamic impacts may apply highly stressed coal/rock mass and initiate failure. Although ground analysis has been widely used burst-prone hard rock mines for designing support systems, there only few studies focusing on understanding characteristics ...

In recent years, with the extension of coal mine at depth, rock bursts are more and frequent. Therefore, research roadway support pressure relief has become key to prevent burst. this paper, primary high strength hydraulic fracturing measures studied analysed. The emphasizes matching characteristics materials, strengthen protection active roadway, realize an integrated system. Considering stron...

Rock bursts occur in nearly vertical coal seam mines at shallow to moderate burial depths, which endangers safe mining. To study the rock burst mechanisms of and extremely thick seams, characteristics were studied via on-site investigation, a field test situ stress was carried out. The mechanical behavior pillars middle B1+2 B3+6 seams analyzed using theoretical numerical simulation methods. re...

The increasing demand for resources and depletion of near ground mineral caused deeper mining operations under high-stress rock mass conditions. As a result this, strain burst, which is the sudden release stored energy in surrounding mass, has become more prevalent created considerable threat to workers construction equipment. It is, therefore, imperative understand how burst mechanism excess a...

Rock bursts and coal gas outbursts are geodynamic disasters in underground mines. Laboratory testing of raw samples is the dominant research method for disaster prediction. However, reliability experimental data low due to inconsistency mechanical properties materials. The utilization structural resources development new coal-like materials significance prediction prevention. This paper studies...

Deep mining will increase the likelihood of coal and gas outburst accidents do harm to safety mining. In this study, a experiment under deep high-stress conditions was carried out stress–gas pressure–temperature response laws in rock surrounding burst hole were evaluated. The experimental results showed that stress around intense variation decreased as distance from position port increased. pre...