Results 1 to 10 of about 70,392 (78)

Application of Mine life information detector in accident rescue

open access: yesMeikuang Anquan, 2022
Aiming at the problems and technical difficulties in the vertical rescue process of mines, such as single information collection and low degree of visualization, a set of technology methods such as multi-media collection, fusion of multiple information ...
WEN Hu   +5 more
doaj   +1 more source

Experimental study on dynamic response of anisotropic adsorption swelling of anthracite

open access: yesMeikuang Anquan, 2022
In order to study the anisotropic adsorption swelling characteristics of coal-rock after CO2 injection, taking anthracite in Qinshui Basin as the research object, the experiments regarding CO2 adsorption capacity and anisotropic swelling of coal-rock ...
ZHAO Kaidi, FU Xuehai
doaj   +1 more source

Compilation principle and key points interpretation of Coal Mine Fire Prevention and Control Rules

open access: yesMeikuang Anquan, 2022
Coal Mine Fire Prevention and Control Rules is the first comprehensive normative document on coal mine fire prevention and control in China, which requires that coal mine fire prevention and control work should follow the principle of “prevention first ...
LIANG Yuntao   +4 more
doaj   +1 more source

Mechanism of Phosphorus Enrichment in Dephosphorization Slag Produced Using the Technology of Integrating Dephosphorization and Decarburization

open access: yesMetals, 2021
In order to better understand and develop the technology of integrating dephosphorization and decarburization in a single converter (abbreviated as IDDSC), the relevant thermodynamic issues were discussed by calculation.
Haimeng Xue   +5 more
doaj   +1 more source

Evolution of Microstructure during Isothermal Treatments of a Duplex-Austenitic 0.66C11.4Mn.9.9Al Low-Density Forging Steel and Effect on the Mechanical Properties

open access: yesMetals, 2021
In the last decades, low-density steels for forging have increasing interest in the automotive industry, and good mechanical properties are required for their real application.
Idurre Kaltzakorta   +4 more
doaj   +1 more source

Mean Stress Effect on the Fatigue Life of 304L Austenitic Steel in Air and PWR Environments Determined with Strain- and Load-Controlled Experiments

open access: yesMetals, 2021
The mean stress effect on the fatigue life of 304L austenitic steel was evaluated at 300 °C in air and pressurized water reactor (PWR) environments.
Philippe Spätig   +3 more
doaj   +1 more source

Location of underground microseismic source based on 3D two-stream network

open access: yesMeitan kexue jishu, 2023
The detection technology of the microseismic source center of underground damage is mainly used for the location of the underground damage, positioning of explosion point of artillery shells in weapon testing ground.
Yangxu WU, Ping CHEN, Bo LI
doaj   +1 more source

Research on instability mechanism and precursory information of coal pillar dam of underground reservoir in coal mine

open access: yesMeitan kexue jishu, 2023
Coal mine underground reservoir is one of the key technologies to solve the protection and utilization of water resources in western mining areas. The basis for maintaining the safe operation of the reservoir is engineering safety, and the dam body is ...
Mingbo CHI   +7 more
doaj   +1 more source

Study on the effect of NMR-based surfactants on pore wetting of high-order coal

open access: yesMeitan kexue jishu, 2023
High-order coal has the characteristics of weak water absorption due to the development of micropores. From the perspective of micropores, it is of great significance to study the improvement effect of different types of surfactants on the wettability of
Ming YANG   +5 more
doaj   +1 more source

Study on optimization of well pattern and well spacing for CBM development:Taking Daning Block as an example

open access: yesMeitan kexue jishu, 2023
CBM well pattern optimization design and deployment is a key part of CBM development plan formulation. Reasonable well pattern deployment can not only optimize CBM production, but also reduce CBM development costs and improve economic benefits.
Zan HUANG   +8 more
doaj   +1 more source

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