NDLI: Experimental study on coal pore structure deterioration under freeze

Content Provider	Springer Nature Link
Author	Zhai, Cheng Wu, Shiliang Liu, Shimin Qin, Lei Xu, Jizhao
Copyright Year	2017
Abstract	This study investigated the impact of consecutive freeze–thaw cycles on the coal pore structure deterioration. Eight coal samples (cores and thin sections) underwent different numbers of freeze–thaw cycles. The effect of freeze–thaw cycles on microscopic characteristics of the coal samples was evaluated by nuclear magnetic resonance and scanning electron microscope. The experimental results showed that the coal samples were significantly deteriorated by freeze–thaw cycles, inducing numerous cracks generated on the sample surfaces. The total porosity of coal continuously increased with consecutive freeze–thaw cycles. The number of pores in the coal samples increased under the effect of freeze–thaw stress. Moreover, the proportion of pores in the coal after freeze–thaw cycles altered. The proportion of micropores and mini-pores gradually decreased, while that of meso-pores and macro-pores (cracks) increased. Therefore, freeze–thaw stress was conducive to gas desorption, diffusion, and transportation, which ultimately improved the efficiency of coal bed methane extraction from coal seams.
Starting Page	1
Ending Page	12
Page Count	12
File Format	PDF
ISSN	18666280
Journal	Environmental Earth Sciences
Volume Number	76
Issue Number	15
e-ISSN	18666299
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2017-07-26
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	CBM Freeze–thaw cycle Pore structure NMR SEM Geology Hydrology/Water Resources Geochemistry Environmental Science and Engineering Terrestrial Pollution Biogeosciences
Content Type	Text
Resource Type	Article
Subject	Global and Planetary Change Earth-Surface Processes Soil Science Environmental Chemistry Pollution Geology Water Science and Technology

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Assessing the potential for deterioration of limestones forming Taq-e Bostan monuments under freeze–thaw weathering and karst development

Effect of freeze–thaw on hydraulic conductivity and microstructure of soft soil in Shanghai area

Cyclic freeze–thaw as a mechanism for water and salt migration in soil

Induced thermal compaction in cohesive sediments around a borehole heat exchanger: laboratory tests on the effect of pore water salinity

Evolution of the mechanical behaviour of limestone subjected to freeze–thaw cycles

A fully coupling coal–gas model associated with inertia and slip effects for CBM migration

The effect of freeze–thaw process on the physical and mechanical properties of tuff

Water absorption and P-wave velocity changes during freeze–thaw weathering process of crosscut travertine rocks

Heating–freezing effects on the pore size distribution of a kaolinite clay

Experimental study on coal pore structure deterioration under freeze–thaw cycles

Similar Documents

Assessing the potential for deterioration of limestones forming Taq-e Bostan monuments under freeze–thaw weathering and karst development

Effect of freeze–thaw on hydraulic conductivity and microstructure of soft soil in Shanghai area

Cyclic freeze–thaw as a mechanism for water and salt migration in soil

Induced thermal compaction in cohesive sediments around a borehole heat exchanger: laboratory tests on the effect of pore water salinity

Evolution of the mechanical behaviour of limestone subjected to freeze–thaw cycles

A fully coupling coal–gas model associated with inertia and slip effects for CBM migration

The effect of freeze–thaw process on the physical and mechanical properties of tuff

Water absorption and P-wave velocity changes during freeze–thaw weathering process of crosscut travertine rocks

Heating–freezing effects on the pore size distribution of a kaolinite clay

Experimental study on coal pore structure deterioration under freeze–thaw cycles