Results 31 to 40 of about 802,471 (295)

Ultrasonic and CT scanning analysis of coal-rock mass under the primary bedding structure

Meitan kexue jishu
In order to study the influence of the primary bedding structure on wave velocity and mechanical properties of coal-rock mass, multilayer and multi-directional ultrasonic and CT scanning tests were carried out in laboratory.
Guorong LEI, Chunyuan LI, Qingxin QI, Jiamin WANG, Weisheng DU, Xiangshang LI, Tuan HE   +6 more
doaj   +1 more source

Blasting pressure relief technology for preventing rock burst in deep heading roadway

Gong-kuang zidonghua, 2022
In order to solve the problems of low pressure relief intensity, untimely pressure relief and high labor intensity in the prevention and control of rock burst by using large diameter borehole pressure relief in deep heading roadway, taking the 401103 ...
MA Wentao, MA Xiaohui, LYU Dazhao, WANG Bing, ZHU Gangliang   +4 more
doaj   +1 more source

Experimental and numerical study on rock burst triggering mechanism via spatiotemporal evolution of stress flow

Meitan kexue jishu
To address the prevention and control of rock burst disasters in deep coal mines, this study focuses on the spatiotemporal evolution mechanism of mining-induced stress, introducing the novel concept of “stress flow” to characterize dynamic stress ...
Chi LIU, Xingyu JIANG, Haitao LI, Pengyu MU, Huaguang LIU, Honghui YUAN, Qingxin QI, Shouguang WANG   +7 more
doaj   +1 more source

CFD Simulation of Temperature Variation in Carboniferous Rock Strata During UCG

Journal of Sustainable Mining, 2013
The numerical simulation was based on the computational fluid dynamics formalism in order to identify the change of temperature in rock strata during underground coal gasification (UCG).
Tomasz Janoszek, Anna Sygała, Mirosława Bukowska   +2 more
doaj   +1 more source

Rock Burst Intensity Classification Prediction Model Based on a Bayesian Hyperparameter Optimization Support Vector Machine

Mathematics, 2022
Rock burst disasters occurring in underground high-stress rock mass mining and excavation engineering seriously threaten the safety of workers and hinders the progress of engineering construction.
Shaohong Yan, Yanbo Zhang, Xiangxin Liu, Runze Liu   +3 more
doaj   +1 more source

Characteristics of instability and ejection modes of coal exhibiting strong impact inclination under uniaxial compression

Meitan kexue jishu
Mechanical behaviors of deformation, rupture, and ejection failure of coal with impact inclination under uniaxial compression were investigated. Uniaxial compression tests were conducted on coal with impact inclination at different loading rates.
Guorong LEI, Chunyuan LI, Kai YANG, Jiamin WANG, Huaikun MAO, Zhengyi LI, Ligang WEI, Chunyang CUI, Tuan HE, Xiaopeng LI, Honghui YUAN   +10 more
doaj   +1 more source

High Temperature Versus Geomechanical Parameters of Selected Rocks – The Present State of Research

Journal of Sustainable Mining, 2013
This paper presents the current state of knowledge concerning the examination of the impact of increased temperatures on changes of geomechanical properties of rocks.
Anna Sygała, Mirosława Bukowska, Tomasz Janoszek   +2 more
doaj   +1 more source

Analysis of rock burst accidents in coal mine based on behavioral safety

Meikuang Anquan, 2021
In order to study the behavioral causes of coal mine rock burst accidents, 24Model was applied to analyze the unsafe acts and physical causes of 10 typical rock burst accidents occurred after 2011.
YIN Wentao
doaj   +1 more source

Paclitaxel induces NM2‐dependent cellular contraction through GEF‐H1 dissociation from microtubules and RhoA/ROCK activation in cancer cells

Molecular Oncology, EarlyView.
Taxanes are widely used chemotherapeutics whose effects on cellular mechanics remain poorly understood. We show that paclitaxel induces rapid cellular contraction by promoting GEF‐H1 dissociation from microtubules and non‐muscle myosin II activation through RhoA/ROCK.
Gloria Asensio‐Juárez, Rafael Pérez‐Díaz, Hugo Ramos‐Solano, Marina Garrido‐Casado, Vanessa C. Talayero, Miguel Vicente‐Manzanares   +5 more
wiley   +1 more source

VIII.—Bursting Rock Surfaces [PDF]

Geological Magazine, 1887
The interesting note by Mr. Strahan in the Geol. Mag. for September, 1887, on explosive slickensides, reminded me of some similar phenomena which were not of unfrequent occurrence near Dent Head and Ribble Head in Yorkshire.In the limestone quarry from which the black marble of Dent is procured the workmen found that, when they were quarrying the lower
openaire   +1 more source