Results 51 to 60 of about 12,296 (207)
Prediction Model of Coal and Gas Outburst Based on Rough Set-Unascertained Measure Theory [PDF]
, 2018 This paper proposes a risk evaluation model based on rough sets (RS) and the unascertained measure theory (UMT) for solving the accuracy problem of coal and gas outburst prediction with the aim to reduce economic losses and casualties in coal mining. The
Gong, W. (Weidong)
core
Fractal model and Lattice Boltzmann Method for Characterization of Non-Darcy Flow in Rough Fractures. [PDF]
, 2017 The irregular morphology of single rock fracture significantly influences subsurface fluid flow and gives rise to a complex and unsteady flow state that typically cannot be appropriately described using simple laws.
Chang, Chun +4 more
core +1 more source
Study on the Law of Multi‐Fracture Propagation in Different Fracturing Fluid Viscosity
Energy Science &Engineering, EarlyView.Samples and equipment Sample preparation Test equipment Analysis of test results Fracture propagation morphology Influence of fracturing fluid viscosity on crack initiation time/(fracture initiation pressure) Evolution law of injection pressure Cumulative relation curve of pressure–time–acoustic ABSTRACT Using the TCHFSM‐I large‐scale accurate triaxial
Zhixing Zhang +4 more
wiley +1 more source
Гидроимпульсное воздействие на выбросоопасный угольный пласт [PDF]
, 2012 Рассмотрены результаты исследований параметров гидроимпульсного воздействия при гидрорыхлении выбросоопасных угольных пластов с целью предотвращения внезапных выбросов угля и газа.Розглянуто результати досліджень параметрів гидроїмпульсної дії при ...
Васильев, Д. Л. +3 more
core
Energy Science &Engineering, EarlyView.This work reveals the “C‐Y,” double “Y,” “π,” and “Y” fracture modes of thick, hard strata and their progressive breaking process (O‐F‐R/S mode), providing a theoretical basis for controlling strong ground pressure in deep mining. ABSTRACT In response to the dynamic hazards caused by the fracture of thick‐hard strata in deep mining, this study ...
Meilu Yu, Jianping Zuo
wiley +1 more source
Meitan xuebaoA large amount of gas rapidly released during coal and gas outburst is an important cause of dynamic effects such as outburst shock waves and coal-gas two-phase flow.
Jie CAO +4 more
doaj +1 more source
Research Status and Prospect of Coal and Gas Outburst Prevention and Control by Hydraulic Technology
Meikuang Anquan, 2020 Coal seam pressure relief and permeability increase is an effective means to prevent coal and gas outburst, coal and rock mass structure transformation is the core problem of coal seam pressure relief and permeability increase, hydraulic technology is ...
CAO Yaolin
doaj +1 more source
Research progress of coal and gas outburst mechanism based on geological structure
Meikuang Anquan, 2022 Aiming at the problem of coal and gas outburst in the process of coal mining in China, this paper first summarizes the research progress of coal and gas outburst mechanism, and points out that the research on outburst mechanism of tectonic belt is of ...
ZHAO Junli, WANG Wenyuan, YANG Wei
doaj +1 more source
Failure Mechanism of Coal and Gas Outburst Initiation
Procedia Engineering, 2011 Abstract Based on the concept that the initiation of coal and gas outburst is the failure of coal and rock mass, the relevant stability theory is applied to build a nonlinear dynamics model of outburst initiation, and the failure mechanism of outburst initiation is systematically analyzed.
Hongwei, Jin, Qianting, Hu, Yanbao, Liu
openaire +1 more source
Influence law of abnormal coal thickness zone on coal and gas outburst
Meitan xuebaoCoal and gas outburst is the most serious dynamic disaster threatening the safety production of coal mines in China. The abnormal area of coal thickness is an important factor affecting the occurrence of coal and gas outburst.
Jupeng TANG +5 more
doaj +1 more source