Accurate Perception of Rock Strata Movement for Environmental Protection in Coal Mining: Taking Thick and Hard Roof Cooperative Control as an Example

Accurate perception of the key stratum instability can improve the safety of coal mining and also provide a basis for alleviating overlying rock strata destruction and environmental disturbance. To efficiently evaluate the instability of the key stratum and its threat to safe mining and environmenta...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Tong Zhao, Changyou Liu, Kaan Yetilmezsoy, Majid Bahramian, Peilin Gong
Formato:	article
Lenguaje:	EN
Publicado:	Hindawi Limited 2021
Materias:	Engineering (General). Civil engineering (General) TA1-2040
Acceso en línea:	https://doaj.org/article/408b3edfdbeb485fab28c969df7273da
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:408b3edfdbeb485fab28c969df7273da
record_format	dspace
spelling	oai:doaj.org-article:408b3edfdbeb485fab28c969df7273da2021-11-15T01:18:55ZAccurate Perception of Rock Strata Movement for Environmental Protection in Coal Mining: Taking Thick and Hard Roof Cooperative Control as an Example1687-809410.1155/2021/4321255https://doaj.org/article/408b3edfdbeb485fab28c969df7273da2021-01-01T00:00:00Zhttp://dx.doi.org/10.1155/2021/4321255https://doaj.org/toc/1687-8094Accurate perception of the key stratum instability can improve the safety of coal mining and also provide a basis for alleviating overlying rock strata destruction and environmental disturbance. To efficiently evaluate the instability of the key stratum and its threat to safe mining and environmental protection, the fracture characteristics and weakening mechanisms were studied through physical simulation, theoretical analysis, and field measurement. A scheme and the parameters of confined blasting in water-filled deep hole presplit technology (CBWDHPT) for thick and hard roof (THR) weakening were proposed. Research studies showed that, after the THR fractured into large blocks, the subsequent sliding instability induced serious support-crushing accidents; however, increasing the support strength could only provide limited control. Confined water and infiltrated modified rock mass functioned as the transfer load medium of the explosives, and the CBWDHPT fully utilized high explosion energy to break rocks. Consequently, the collapse and filling of the immediate roof and low-positioned THR, as well as the timely cutting off the middle-positioned THR, could be realized, which alleviated the migration space of THR blocks, overlying strata destruction, and earth-surface step subsidence. Finally, the environmentally friendly strategy (including the CBWDHPT and hydraulic support optimization) for overlying rock strata protection was proposed. In the industrial test, the THR was broken into blocks of different sizes after utilizing the CBWDHPT, and the support working resistance was significantly decreased. It was concluded that the environmentally friendly strategy could effectively reduce the risk of overlying rock strata destruction.Tong ZhaoChangyou LiuKaan YetilmezsoyMajid BahramianPeilin GongHindawi LimitedarticleEngineering (General). Civil engineering (General)TA1-2040ENAdvances in Civil Engineering, Vol 2021 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Engineering (General). Civil engineering (General) TA1-2040
spellingShingle	Engineering (General). Civil engineering (General) TA1-2040 Tong Zhao Changyou Liu Kaan Yetilmezsoy Majid Bahramian Peilin Gong Accurate Perception of Rock Strata Movement for Environmental Protection in Coal Mining: Taking Thick and Hard Roof Cooperative Control as an Example
description	Accurate perception of the key stratum instability can improve the safety of coal mining and also provide a basis for alleviating overlying rock strata destruction and environmental disturbance. To efficiently evaluate the instability of the key stratum and its threat to safe mining and environmental protection, the fracture characteristics and weakening mechanisms were studied through physical simulation, theoretical analysis, and field measurement. A scheme and the parameters of confined blasting in water-filled deep hole presplit technology (CBWDHPT) for thick and hard roof (THR) weakening were proposed. Research studies showed that, after the THR fractured into large blocks, the subsequent sliding instability induced serious support-crushing accidents; however, increasing the support strength could only provide limited control. Confined water and infiltrated modified rock mass functioned as the transfer load medium of the explosives, and the CBWDHPT fully utilized high explosion energy to break rocks. Consequently, the collapse and filling of the immediate roof and low-positioned THR, as well as the timely cutting off the middle-positioned THR, could be realized, which alleviated the migration space of THR blocks, overlying strata destruction, and earth-surface step subsidence. Finally, the environmentally friendly strategy (including the CBWDHPT and hydraulic support optimization) for overlying rock strata protection was proposed. In the industrial test, the THR was broken into blocks of different sizes after utilizing the CBWDHPT, and the support working resistance was significantly decreased. It was concluded that the environmentally friendly strategy could effectively reduce the risk of overlying rock strata destruction.
format	article
author	Tong Zhao Changyou Liu Kaan Yetilmezsoy Majid Bahramian Peilin Gong
author_facet	Tong Zhao Changyou Liu Kaan Yetilmezsoy Majid Bahramian Peilin Gong
author_sort	Tong Zhao
title	Accurate Perception of Rock Strata Movement for Environmental Protection in Coal Mining: Taking Thick and Hard Roof Cooperative Control as an Example
title_short	Accurate Perception of Rock Strata Movement for Environmental Protection in Coal Mining: Taking Thick and Hard Roof Cooperative Control as an Example
title_full	Accurate Perception of Rock Strata Movement for Environmental Protection in Coal Mining: Taking Thick and Hard Roof Cooperative Control as an Example
title_fullStr	Accurate Perception of Rock Strata Movement for Environmental Protection in Coal Mining: Taking Thick and Hard Roof Cooperative Control as an Example
title_full_unstemmed	Accurate Perception of Rock Strata Movement for Environmental Protection in Coal Mining: Taking Thick and Hard Roof Cooperative Control as an Example
title_sort	accurate perception of rock strata movement for environmental protection in coal mining: taking thick and hard roof cooperative control as an example
publisher	Hindawi Limited
publishDate	2021
url	https://doaj.org/article/408b3edfdbeb485fab28c969df7273da
work_keys_str_mv	AT tongzhao accurateperceptionofrockstratamovementforenvironmentalprotectionincoalminingtakingthickandhardroofcooperativecontrolasanexample AT changyouliu accurateperceptionofrockstratamovementforenvironmentalprotectionincoalminingtakingthickandhardroofcooperativecontrolasanexample AT kaanyetilmezsoy accurateperceptionofrockstratamovementforenvironmentalprotectionincoalminingtakingthickandhardroofcooperativecontrolasanexample AT majidbahramian accurateperceptionofrockstratamovementforenvironmentalprotectionincoalminingtakingthickandhardroofcooperativecontrolasanexample AT peilingong accurateperceptionofrockstratamovementforenvironmentalprotectionincoalminingtakingthickandhardroofcooperativecontrolasanexample
_version_	1718428977661476864

Accurate Perception of Rock Strata Movement for Environmental Protection in Coal Mining: Taking Thick and Hard Roof Cooperative Control as an Example

Ejemplares similares