Results 31 to 40 of about 3,077,132 (240)
Experimental Study on Damage Characteristics of Coal Samples under True Triaxial Loading and Dynamic Unloading [PDF]
, 2022 Coal bursts are one of the formidable hazards in underground coal mines, yet it is still not fully explored due to the complex stress environment that exists during mining.
Zhigang Liu +5 more
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Mechanical properties and fracture damage law of coal-rock composition under the action of supercritical CO2 [PDF]
, 2023 The injection of CO2 into deep unrecoverable coal seams is one of the effective ways to achieve CO2 geological sequestration, but CO2 will be in a supercritical state under the action of high pressure and high temperature.
Yulong JIANG +6 more
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Typical model of water damage in Jurassic shallow coal seam mining and its zoning
, 2021 The mining of Jurassic shallow coal seam in northern Shaanxi coal base is faced with a variety of water hazards, and the traditional coal mine water hazard assessment has some limitations, so it is necessary to carry out more detailed water hazard model ...
MIAO Yanping +5 more
core +1 more source
Geofluids, 2021 The purpose of this study is to study the damage and fracturing effects of high-voltage discharge on coal-rock mass under the action of hydrostatic pressure. Based on the traditional damage evolution model and the change of the effective bearing area and
Xiankai Bao +5 more
doaj +1 more source
Study on constitutive model of coal rock damage under graded cyclic loading and unloading
, 2022 Taking coal as the research subject, the damage mechanical properties of coal were studied by grading cyclic loading and unloading tests. Using the Weibull statistical distribution and the introduction of damage variable D, a damage constitutive model ...
LI Xueshuai +5 more
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CONDITIONS OF THE CHROMOSOMAL DAMAGE IN COAL MINERS
Hygiene and sanitation, 2019 Working in coal mines, despite all achievements of modern science and technology, still remains among the most dangerous occupations to the health. The review of researches about the chromosomal damage in coal miners was performed. We searched information in the following databases - PubMed, http://www.sciencedirect.com and in the electronic library ...
Yu. E. Kulemin +4 more
openaire +1 more source
Meitan kexue jishu, 2023 The early warning of coal spontaneous combustion is difficult to solve the perception of fire information. The acoustic emission (AE) signal generated by thermal damage and destruction on coal rock can perceive the temperature, and then issue a warning ...
Biao KONG +7 more
doaj +1 more source
Simulation study on damage characteristics of coal impacted by drilling water jet
, 2022 Drilling water jet permeability enhancement technology is an effective measure to solve the permeability of coal seam. However, the research on the damage characteristics of coal seam drilling under the impact of water jet is still unclear.
HAN Peizhuang +5 more
core +1 more source
, 2022 To study the response characteristics of coal samples to impact load under different surrounding pressures, the self-developed magnetic drop hammer impact device was used to measure the change of ultrasonic wave velocity before and after drop hammer ...
Ruihao Zhai +4 more
core +1 more source
Meikuang Anquan, 2023 In order to study the characteristics of porosity, permeability and stress sensitivity of middle rank coal reservoir in Tucheng syncline and their influence on coalbed methane exploitation, coal core samples of coal seams 1#, 3#, 5#, 15#, 17#, 291# and ...
TANG Daixue, LOU Yi, FENG Yunfu
doaj +1 more source