Results 11 to 20 of about 71,256 (78)

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

Meitan 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, Tao ZHANG, Xuebo ZHANG, Jing XU, Longxiang HAN, Ji MA   +5 more
doaj   +1 more source

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

Meitan 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, Ruiqi ZHOU, Jiaosheng YANG, Meizhu WANG, Dameng WANG, Zunqing MA, Ling QI, Xinyang MEN, Liyu FANG   +8 more
doaj   +1 more source

Study on time series rule of buried pipe failure under high-intensity coal mining in a gas-coal overlapping area

Meitan kexue jishu, 2023
The high-intensity mining of coal face in the Ordos gas-coal overlapping area can easily lead to the failure of shallowly buried oil & gas pipelines.
Jiandong REN, Yixin ZHAO, Zhongbo SUN, Shimin LIU, Wen WANG   +4 more
doaj   +1 more source

Optimization and simulation of adaptive mining cutting path in complex undulating coal seam

Meitan kexue jishu, 2023
Adaptive cutting planning of shearer based on the fluctuation of coal seam is one of the key problems to realize intelligent unmanned mining in coal mine.
Shixin GONG, Huaiwei REN, Wei HUANG, Jian LI   +3 more
doaj   +1 more source

Study on long-distance fast advance drilling technology strategy and supporting equipment in coal mine roadway tunneling

Meitan kexue jishu, 2023
With the gradual increase in the depth of coal resource extraction in our country, geological conditions and surrounding rock environment are becoming increasingly complex.
Songyong LIU, Baolong XU, Lixue QIN, Qinghao MENG, Hongsheng LI   +4 more
doaj   +1 more source

A lightweight-based method for real-time monitoring of lump coal on conveyor belts

Meitan kexue jishu, 2023
Coal is an essential national energy source, which is mainly conveyed by the conveyor belts in the process of coal production and transportation. However, when transferred by means of the conveyor belt, lump of coal affects the safe operation of the ...
Ligang WU, Le CHEN, Yuanyuan LYU, Zhe ZHANG   +3 more
doaj   +1 more source

Research on the distribution law of spatio-temporal permeability screening and adaptation characteristics of banana-type equal-thickness classification of coal gangues

Meitan kexue jishu, 2023
Screening is an important technological challenge to alleviate environmental contamination and resource waste and enhance the large-scale synthesis of coal gangue solid waste resources.
Yaolong SHI
doaj   +1 more source

Study on pore structure of coking coal based on low-temperature nitrogen adsorption and mercury intrusion method

Meikuang Anquan, 2022
In order to clarify the pore structure characteristics of deep coking coal in Pingdingshan No.12 Coal Mine, low-temperature nitrogen adsorption method and mercury intrusion method were used to conduct experimental research on its soft and hard coal. The
QI Lingling, ZHOU Xiaoqing, PENG Xinshan, WANG Zhaofeng, DAI Juhua   +4 more
doaj   +1 more source

Experimental study on the influence of carbon dioxide cracking on coal pore structure

Meikuang Anquan, 2022
In order to quantitatively characterize the effect of carbon dioxide fracturing on the pore structure of coal, the M8 coal seam of Dayun Coal Mine was used as the research object to carry out carbon dioxide fracturing.
GUO Yaling, JIANG Zebiao, PENG Xin, FU Xiangxiang, WU Shaokang, QUAN Xiping, YANG Xifa   +6 more
doaj   +1 more source

Mechanism of mercury migration under the influence of coal field fire

Meikuang Anquan, 2021
In order to study the mechanism and process of mercury migration under the influence of coal spontaneous combustion and coal field fire area, this paper uses the method of combining theory and experiment to study the migration of mercury. In this paper,
WANG Gang
doaj   +1 more source