Fracture behavior and acoustic emission characteristics of sandstone samples with inclined precracks

L Dou, K Yang, X Chi - International Journal of Coal Science & Technology, 2021 - Springer
Sandstone samples with precracks of different dip angles were collected from a coal mine
roof and subjected to uniaxial compression tests, and acoustic emission (AE) and scanning …

Early warning of coal dynamic disaster by precursor of AE and EMR" quiet period"

S He, M Qin, L Qiu, D Song, X Zhang - International Journal of Coal …, 2022 - Springer
Efficient and accurate monitoring and early warning of coal dynamic disaster and other
disasters can provide guarantee for the efficient operation of mine transportation system …

[HTML][HTML] Resistivity response of coal under hydraulic fracturing with different injection rates: A laboratory study

M Song, Q Li, Q Hu, Y Wu, G Ni, Y Xu, Y Zhang… - International Journal of …, 2022 - Elsevier
Resistivity will have different response characteristics to the hydraulic fracture propagation
process. In this work, a resistivity testing system for hydraulic fracturing specimens was …

Developing a new bursting liability index based on energy evolution for coal under different loading rates

NM Khan, M Ahmad, K Cao, I Ali, W Liu, H Rehman… - Sustainability, 2022 - mdpi.com
The risk of a coal burst rises with the excavation depth and other mining-related activities.
These devastating coal burst activities are a major concern during deep coal mining. During …

Prediction of an early failure point using infrared radiation characteristics and energy evolution for sandstone with different water contents

NM Khan, L Ma, K Cao, S Hussain, W Liu, Y Xu… - Bulletin of Engineering …, 2021 - Springer
Water is one of the most effective agents that weaken the physio-mechanical properties of
rock, trigger significant construction delays, endanger the construction operation, and lead to …

Numerical simulation study on the multi-physical field response to underground coal and gas outburst under high geo-stress conditions

B Zhao, G Wen, J Nian, Q Ma, C Fan, X Lv, C Deng - Minerals, 2022 - mdpi.com
Based on thermal–fluid–solid coupling law in coal and gas outburst, a multi-physical field
numerical analysis model is built for the whole outburst process. The response laws of …

Numerical investigation of the effects of proppant embedment on fracture permeability and well production in Queensland coal seam gas reservoirs

D Wang, Z You, RL Johnson Jr, L Wu… - International Journal of …, 2021 - Elsevier
This paper introduces the development of a new predictive model in support of proppant
injection in naturally fractured coal seam gas (CSG) reservoirs. In the proposed model, the …

Prediction of sandstone dilatancy point in different water contents using infrared radiation characteristic: Experimental and machine learning approaches

L Ma, NM Khan, K Cao, H Rehman… - …, 2022 - pubs.geoscienceworld.org
In rock mechanics, the dilatancy point is always occurring before rock failure during loading
process. Water content plays a significant role in the rock physiomechanical properties …

The role of sorption-induced coal matrix shrinkage on permeability and stress evolutions under replicated in situ condition for CBM reservoirs

A Liu, S Liu, P Liu, S Harpalani - Fuel, 2021 - Elsevier
Matrix shrinkage is a unique property of coal which dictates the sorption induced strain in the
constitutive relation. Both permeability and stress profiles are passively modified with …

Development of Predictive Models for Determination of the Extent of Damage in Granite Caused by Thermal Treatment and Cooling Conditions Using Artificial …

NM Khan, K Cao, MZ Emad, S Hussain, H Rehman… - Mathematics, 2022 - mdpi.com
Thermal treatment followed by subsequent cooling conditions (slow and rapid) can induce
damage to the rock surface and internal structure, which may lead to the instability and …