Physical Simulation Experiment on the Rock Breaking Efficiency of Pulse Type Controllable Shock Wave DOI Creative Commons
Shubin Wang,

Shuo Ying Zhang,

Liang Ma

et al.

ACS Omega, Journal Year: 2024, Volume and Issue: 9(52), P. 51554 - 51569

Published: Dec. 17, 2024

Given that conducting controllable shock wave tests in actual rock formations underground coal mines affects mine production with the parameters required for equipment design and incurs significant costs, a series of ground were conducted separately. First, impact energy storage on breaking efficiency was analyzed. Then, physical simulation experiments differential waves high-strength cement, sandstone, granite, solid limestone. Results show (a) 50 kJ is driven by pulse power, converter uses metal wire length 120 mm diameter 1.6 to convert energy. (b) For after single sample, due lack confining pressure outer protection, model sample directly exploded, cracking effect very good. (c) experimental results three levels 50, 70, 100 have basically verified power driving source an can achieve result fracturing material mode. (d) endoscopic exploration drilling holes adjacent guide where implemented. (e) limestone strata, when drive kJ, existing electric explosion conversion impacts meet cutting seam requirements most roofs.

Language: Английский

Physical simulation analysis of coal rock mechanics characteristics and shock wave effects in Liuxiang coal mine DOI Creative Commons
Lei Li,

Lei Xiao-bing,

Shuo Zhang

et al.

Geomechanics and Geophysics for Geo-Energy and Geo-Resources, Journal Year: 2025, Volume and Issue: 11(1)

Published: April 3, 2025

Language: Английский

Citations

0
Numerical Simulation Study of the Operating Characteristics of Attached-Wall Bistable Jet Elements DOI Creative Commons
Yufei Sun

ACS Omega, Journal Year: 2024, Volume and Issue: 9(23), P. 25344 - 25355

Published: May 30, 2024

In this paper, first, the control principle of wall-mounted bistable jet components is analyzed, and main structures inner cavity are introduced. Then, equations, turbulence models, boundary conditions, mesh partitioning multiphase fluids established sequentially, element model was obtained. Finally, qualitative quantitative analyses conducted on attachment process, switching point position. Results show that in steady state wall attachment, fluid layer attached to flowing from channel side rather than jet. The geometric parameters assembly affect stability location point.

Language: Английский

Citations

0
Research on the design of gas control roadway of 9# coal seam in Wuhushan Mine based on the optimization of layer placement DOI Creative Commons
Chun Zhang,

Xianju Qian

Research Square (Research Square), Journal Year: 2024, Volume and Issue: unknown

Published: Aug. 31, 2024

Abstract In order to address the issue of gas over limit in upper corner working face 9# coal seam Wuhushan Mine, a series theoretical and numerical simulation analyses were conducted evaluate optimal configuration for control lane seam. accordance with "O" circle theory lithology overlying rock strata seam, height range fallout zone fissure mining area was determined by employing empirical formulas. The change rule distribution characteristics void ratio fall analyzed based on movement fall. determination method also provided. software employed simulate analyze concentration field air-mining under conditions no extraction six distinct layer positions lane. position subsequently implemented field. results demonstrate that exhibits 6.86 ~ 11.26 m, while displays 30.11 41.31 m. When road is situated close proximity face, markedly low concentration. distance between return air 20 m from top 0.35% 0.26%, respectively. These values are lowest observed layout scheme. Additionally, pure volume 23.7% 38.3 m3·min− 1, represent highest concentrations various schemes. application management field, results, demonstrated successful effect, which consistent results. This effectively managed an over-limit

Language: Английский

Citations

0
Design of gas control lane of 9# coal seam in Wuhushan Mine based on layer layout optimization DOI Creative Commons
Chun Zhang,

Xianju Qian

Scientific Reports, Journal Year: 2024, Volume and Issue: 14(1)

Published: Oct. 26, 2024

Language: Английский

Citations

0
Physical Simulation Experiment on the Rock Breaking Efficiency of Pulse Type Controllable Shock Wave DOI Creative Commons
Shubin Wang,

Shuo Ying Zhang,

Liang Ma

et al.

ACS Omega, Journal Year: 2024, Volume and Issue: 9(52), P. 51554 - 51569

Published: Dec. 17, 2024

Given that conducting controllable shock wave tests in actual rock formations underground coal mines affects mine production with the parameters required for equipment design and incurs significant costs, a series of ground were conducted separately. First, impact energy storage on breaking efficiency was analyzed. Then, physical simulation experiments differential waves high-strength cement, sandstone, granite, solid limestone. Results show (a) 50 kJ is driven by pulse power, converter uses metal wire length 120 mm diameter 1.6 to convert energy. (b) For after single sample, due lack confining pressure outer protection, model sample directly exploded, cracking effect very good. (c) experimental results three levels 50, 70, 100 have basically verified power driving source an can achieve result fracturing material mode. (d) endoscopic exploration drilling holes adjacent guide where implemented. (e) limestone strata, when drive kJ, existing electric explosion conversion impacts meet cutting seam requirements most roofs.

Language: Английский

Citations

0