Results 21 to 30 of about 435,468 (196)

Nanopore Structure and Mechanical Properties in Brittle Tectonically Deformed Coals Explored by Atomic Force Microscopy

open access: yesFrontiers in Earth Science, 2022
Tectonically deformed coals (TDCs) are of great importance to coalbed methane exploitation and coal mining safety. Compared to primary coals, reservoir properties of TDCs have been transformed greatly by tectonic stress.
Ningyuan Zhang, Suping Yao, Yuhui Wang
doaj   +1 more source

Analysis of the Coal and Gas Outburst Mechanism from the Perspective of Tectonic Movement

open access: yesGeofluids, 2021
Coal and gas outburst is the extreme instability caused by stress, gas, and coal. In this review article, dominant factors and inducing factors of outburst were summarized; geologic features of typical outburst cases and the effects of tectonic movement ...
Qingyi Tu   +4 more
doaj   +1 more source

Characteristics of stratified coal reservoirs in Liupanshui coalfield of Guizhou Province and exploration and development direction of coalbed methane [PDF]

open access: yesYouqicang pingjia yu kaifa
Guizhou Province is rich in coalbed methane(CBM) resources; however, the development of tectonic coal constrains the increase of reserves and production.
QIU Wenci, SANG Shuxun, GUO Zhijun, HAN Sijie, ZHOU Xiaozhi, ZHOU Peiming, WU Zhangli, SANG Guoyun, ZHANG Binbin, GAO Wei
doaj   +3 more sources

Experimental Study on Adsorption Pore Structure and Gas Migration of Coal Reservoir Using Low-Field Nuclear Magnetic Resonance

open access: yesAdvances in Civil Engineering, 2020
For the quantitative recognition and characterization of the flow characteristics of polymorphism coalbed gas in tectonic coal, experiments on pore morphology, pore diameter distribution, and methane adsorption law in outburst tectonic coal were carried ...
Jiazhuo Li   +7 more
doaj   +1 more source

The tectonic framework and controlling mechanism of coal-based graphite in Lutang mining area, Hunan Province

open access: yes, 2020
Lutang mining area, one of the famous coal-based graphite mining areas in China, is controlled by both the magmatic intrusions and tectonic activities. Both the graphitization of coal and occurrence are closely related to the tectonic framework.
Lu, WANG   +4 more
core   +1 more source

Coalfield structure and structural controls on coal in China

open access: yesInternational Journal of Coal Science & Technology, 2020
The occurrence of coal-bearing strata in a variety of coal-bearing basins of China is characterized by late tectonic deformation and remarkable spatial and geochronologic differences.
Daiyong Cao   +8 more
doaj   +1 more source

Multiple-Level Tectonic Control of Coalbed Methane Occurrence in the Huaibei Coalfield of Anhui Province, China

open access: yesEnergies, 2022
The Huaibei coalfield is an important coal base and one of the hot spots of coalbed methane development in China. Therefore, a detailed understanding of gas occurrence in the Huaibei coalfield is of great significance.
Zhigen Zhao, Sheng Xue
doaj   +1 more source

Characteristics of tectonic evolution of Carboniferous-Permian coal measures in the north-central Qinshui basin

open access: yes, 2020
By restoring the paleo-tectonic and sedimentary environment of coal accumulation period, combining with the tectonic stress field and subsidence history, the formation process of Late Paleozoic coal measures in the North-central Qinshui basin and the ...
Zhongyue, LIN, Yingchun, WEI, Kang, LIU
core   +1 more source

Laboratory Study on Changes in the Pore Structures and Gas Desorption Properties of Intact and Tectonic Coals after Supercritical CO2 Treatment: Implications for Coalbed Methane Recovery

open access: yesEnergies, 2018
Tectonic coals in coal seams may affect the process of enhanced coalbed methane recovery with CO2 sequestration (CO2-ECBM). The main objective of this study was to investigate the differences between supercritical CO2 (ScCO2) and intact and tectonic ...
Erlei Su   +4 more
doaj   +1 more source

Tectonic control law and zoning division of coal seam gas occurrence in Sichuan Province

open access: yesEnergy Exploration & Exploitation, 2023
Understanding the coal seam gas occurrence law is the premise and foundation of gas disaster prevention and production planning. The tectonic control law and zoning division of gas occurrence in Sichuan Province have been discussed, based on the gradual ...
Tianrang Jia   +2 more
doaj   +1 more source

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