Mechanism of Hydraulic Fracturing Cutting Hard Basic Roof to Prevent Rockburst

Rockburst is globally regarded as one of the most severe and complicated mining dynamic disasters to predict or control. Generally, the occurrence mechanism of rockbursts can be considered as a process of the elastic strain energy accumulation, emancipation, transmission, and occurrence. Tracing to...

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Autores principales:	Jianqiao Luo, Shaohong Yan, Tuo Yang, Haoqi Mu, Wensheng Wei, Yupeng Shen, Hongtao Mu
Formato:	article
Lenguaje:	EN
Publicado:	Hindawi Limited 2021
Materias:	Physics QC1-999
Acceso en línea:	https://doaj.org/article/32b867840bb64e6286cc92dc6662ffb9
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spelling	oai:doaj.org-article:32b867840bb64e6286cc92dc6662ffb92021-11-22T01:09:57ZMechanism of Hydraulic Fracturing Cutting Hard Basic Roof to Prevent Rockburst1875-920310.1155/2021/4032653https://doaj.org/article/32b867840bb64e6286cc92dc6662ffb92021-01-01T00:00:00Zhttp://dx.doi.org/10.1155/2021/4032653https://doaj.org/toc/1875-9203Rockburst is globally regarded as one of the most severe and complicated mining dynamic disasters to predict or control. Generally, the occurrence mechanism of rockbursts can be considered as a process of the elastic strain energy accumulation, emancipation, transmission, and occurrence. Tracing to the source, the reasons for large accumulation of elastic strain energy in coal and rock mass are the high stress of the roof layer that loads on the coal and rock masses around the mining space coupling effect with the natural horizontal tectonic stress. In this study, using the minimum energy theory and elasticity theory, the analytical formula for calculating elastic strain energy of the roof cantilever beam structure acting on the coal body load in front of the working face is deduced. Accordingly, we achieved a method of using hydraulic fracturing to improve the roof structure. In detail, we use a high-pressure jet to cut the cantilever roof structure, which can make a prelocated fracture surface, and then utilize the packers to make sure that the injected high-pressure fracturing fluid is propagating along the prelocated fracture surface and can cut off the cantilever roof structure eventually to prevent rockbursts in advance. Due to the rockburst occurrence mechanism and the quantitatively elastic strain energy analytical formula, a preconditioning water jet cutting induced fracture surface to create orientation-controllable hydraulic fracture strategy is proposed to guard against the high hazard caused by the massive elastic strain energy, which accumulated in the coal body in front of the working face and coal pillar.Jianqiao LuoShaohong YanTuo YangHaoqi MuWensheng WeiYupeng ShenHongtao MuHindawi LimitedarticlePhysicsQC1-999ENShock and Vibration, Vol 2021 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Physics QC1-999
spellingShingle	Physics QC1-999 Jianqiao Luo Shaohong Yan Tuo Yang Haoqi Mu Wensheng Wei Yupeng Shen Hongtao Mu Mechanism of Hydraulic Fracturing Cutting Hard Basic Roof to Prevent Rockburst
description	Rockburst is globally regarded as one of the most severe and complicated mining dynamic disasters to predict or control. Generally, the occurrence mechanism of rockbursts can be considered as a process of the elastic strain energy accumulation, emancipation, transmission, and occurrence. Tracing to the source, the reasons for large accumulation of elastic strain energy in coal and rock mass are the high stress of the roof layer that loads on the coal and rock masses around the mining space coupling effect with the natural horizontal tectonic stress. In this study, using the minimum energy theory and elasticity theory, the analytical formula for calculating elastic strain energy of the roof cantilever beam structure acting on the coal body load in front of the working face is deduced. Accordingly, we achieved a method of using hydraulic fracturing to improve the roof structure. In detail, we use a high-pressure jet to cut the cantilever roof structure, which can make a prelocated fracture surface, and then utilize the packers to make sure that the injected high-pressure fracturing fluid is propagating along the prelocated fracture surface and can cut off the cantilever roof structure eventually to prevent rockbursts in advance. Due to the rockburst occurrence mechanism and the quantitatively elastic strain energy analytical formula, a preconditioning water jet cutting induced fracture surface to create orientation-controllable hydraulic fracture strategy is proposed to guard against the high hazard caused by the massive elastic strain energy, which accumulated in the coal body in front of the working face and coal pillar.
format	article
author	Jianqiao Luo Shaohong Yan Tuo Yang Haoqi Mu Wensheng Wei Yupeng Shen Hongtao Mu
author_facet	Jianqiao Luo Shaohong Yan Tuo Yang Haoqi Mu Wensheng Wei Yupeng Shen Hongtao Mu
author_sort	Jianqiao Luo
title	Mechanism of Hydraulic Fracturing Cutting Hard Basic Roof to Prevent Rockburst
title_short	Mechanism of Hydraulic Fracturing Cutting Hard Basic Roof to Prevent Rockburst
title_full	Mechanism of Hydraulic Fracturing Cutting Hard Basic Roof to Prevent Rockburst
title_fullStr	Mechanism of Hydraulic Fracturing Cutting Hard Basic Roof to Prevent Rockburst
title_full_unstemmed	Mechanism of Hydraulic Fracturing Cutting Hard Basic Roof to Prevent Rockburst
title_sort	mechanism of hydraulic fracturing cutting hard basic roof to prevent rockburst
publisher	Hindawi Limited
publishDate	2021
url	https://doaj.org/article/32b867840bb64e6286cc92dc6662ffb9
work_keys_str_mv	AT jianqiaoluo mechanismofhydraulicfracturingcuttinghardbasicrooftopreventrockburst AT shaohongyan mechanismofhydraulicfracturingcuttinghardbasicrooftopreventrockburst AT tuoyang mechanismofhydraulicfracturingcuttinghardbasicrooftopreventrockburst AT haoqimu mechanismofhydraulicfracturingcuttinghardbasicrooftopreventrockburst AT wenshengwei mechanismofhydraulicfracturingcuttinghardbasicrooftopreventrockburst AT yupengshen mechanismofhydraulicfracturingcuttinghardbasicrooftopreventrockburst AT hongtaomu mechanismofhydraulicfracturingcuttinghardbasicrooftopreventrockburst
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Mechanism of Hydraulic Fracturing Cutting Hard Basic Roof to Prevent Rockburst

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