Numerical Simulation Study of the Strata Movement Rule of Deep Mining with the Super-Thick and Weak Cementation Overburden: A Case Study in China

As the national energy strategy is to mine westward, the deep coal resources under the super-thick and weak cementation overburden in the western mining area will play a critical role in China’s sustainable economic growth. The super-thick and weak cementation overburden has weaker lithology, thicke...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Guojian Zhang, Guangli Guo, Shikai Shen, Qingkun Guo, Sifeng Zhang, Jianfeng Wu
Formato:	article
Lenguaje:	EN
Publicado:	Hindawi Limited 2021
Materias:	Engineering (General). Civil engineering (General) TA1-2040 Mathematics QA1-939
Acceso en línea:	https://doaj.org/article/d84c29bf829d4f8b94dad5fcce9d76ba
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:d84c29bf829d4f8b94dad5fcce9d76ba
record_format	dspace
spelling	oai:doaj.org-article:d84c29bf829d4f8b94dad5fcce9d76ba2021-11-22T01:10:09ZNumerical Simulation Study of the Strata Movement Rule of Deep Mining with the Super-Thick and Weak Cementation Overburden: A Case Study in China1563-514710.1155/2021/6806703https://doaj.org/article/d84c29bf829d4f8b94dad5fcce9d76ba2021-01-01T00:00:00Zhttp://dx.doi.org/10.1155/2021/6806703https://doaj.org/toc/1563-5147As the national energy strategy is to mine westward, the deep coal resources under the super-thick and weak cementation overburden in the western mining area will play a critical role in China’s sustainable economic growth. The super-thick and weak cementation overburden has weaker lithology, thicker strata, no large joints, bedding development, and better integrity. Therefore, its movement rule is inevitably different from that of the weak overburden and the middle hard overburden in Central China and Eastern China. However, lack of studies on the movement of the super-thick and weak cementation overburden has led to severe constraints for the large-scale exploitation of coal resources under the super-thick and weak cementation overburden in the western mining area. This study explored the surface movement rule and the influence of overburden characteristics on strata movement with field measurement and numerical simulation. The findings indicate that the surface reaches full mining and the subsidence coefficient is about 0.9 when D1 (width in the dip direction) and D3 (length in the strike direction) are 3 times H0 (the mean mining depth) or more. The strike mining degree has a certain influence on the surface movement law, the maximum difference of the surface subsidence coefficient is 0.35, and the maximum difference of the horizontal movement coefficient is 0.05. In addition, the control effect of the Zhidan group sandstone is stronger. Thus, its first breaking results in surface sinking in a fractured manner when D1 is about 1.3 times H0 and D3 is 3 times H0 or more. The above results can provide reference for the safe mining and control of the super-thick weak cementation overburden.Guojian ZhangGuangli GuoShikai ShenQingkun GuoSifeng ZhangJianfeng WuHindawi LimitedarticleEngineering (General). Civil engineering (General)TA1-2040MathematicsQA1-939ENMathematical Problems in Engineering, Vol 2021 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Engineering (General). Civil engineering (General) TA1-2040 Mathematics QA1-939
spellingShingle	Engineering (General). Civil engineering (General) TA1-2040 Mathematics QA1-939 Guojian Zhang Guangli Guo Shikai Shen Qingkun Guo Sifeng Zhang Jianfeng Wu Numerical Simulation Study of the Strata Movement Rule of Deep Mining with the Super-Thick and Weak Cementation Overburden: A Case Study in China
description	As the national energy strategy is to mine westward, the deep coal resources under the super-thick and weak cementation overburden in the western mining area will play a critical role in China’s sustainable economic growth. The super-thick and weak cementation overburden has weaker lithology, thicker strata, no large joints, bedding development, and better integrity. Therefore, its movement rule is inevitably different from that of the weak overburden and the middle hard overburden in Central China and Eastern China. However, lack of studies on the movement of the super-thick and weak cementation overburden has led to severe constraints for the large-scale exploitation of coal resources under the super-thick and weak cementation overburden in the western mining area. This study explored the surface movement rule and the influence of overburden characteristics on strata movement with field measurement and numerical simulation. The findings indicate that the surface reaches full mining and the subsidence coefficient is about 0.9 when D1 (width in the dip direction) and D3 (length in the strike direction) are 3 times H0 (the mean mining depth) or more. The strike mining degree has a certain influence on the surface movement law, the maximum difference of the surface subsidence coefficient is 0.35, and the maximum difference of the horizontal movement coefficient is 0.05. In addition, the control effect of the Zhidan group sandstone is stronger. Thus, its first breaking results in surface sinking in a fractured manner when D1 is about 1.3 times H0 and D3 is 3 times H0 or more. The above results can provide reference for the safe mining and control of the super-thick weak cementation overburden.
format	article
author	Guojian Zhang Guangli Guo Shikai Shen Qingkun Guo Sifeng Zhang Jianfeng Wu
author_facet	Guojian Zhang Guangli Guo Shikai Shen Qingkun Guo Sifeng Zhang Jianfeng Wu
author_sort	Guojian Zhang
title	Numerical Simulation Study of the Strata Movement Rule of Deep Mining with the Super-Thick and Weak Cementation Overburden: A Case Study in China
title_short	Numerical Simulation Study of the Strata Movement Rule of Deep Mining with the Super-Thick and Weak Cementation Overburden: A Case Study in China
title_full	Numerical Simulation Study of the Strata Movement Rule of Deep Mining with the Super-Thick and Weak Cementation Overburden: A Case Study in China
title_fullStr	Numerical Simulation Study of the Strata Movement Rule of Deep Mining with the Super-Thick and Weak Cementation Overburden: A Case Study in China
title_full_unstemmed	Numerical Simulation Study of the Strata Movement Rule of Deep Mining with the Super-Thick and Weak Cementation Overburden: A Case Study in China
title_sort	numerical simulation study of the strata movement rule of deep mining with the super-thick and weak cementation overburden: a case study in china
publisher	Hindawi Limited
publishDate	2021
url	https://doaj.org/article/d84c29bf829d4f8b94dad5fcce9d76ba
work_keys_str_mv	AT guojianzhang numericalsimulationstudyofthestratamovementruleofdeepminingwiththesuperthickandweakcementationoverburdenacasestudyinchina AT guangliguo numericalsimulationstudyofthestratamovementruleofdeepminingwiththesuperthickandweakcementationoverburdenacasestudyinchina AT shikaishen numericalsimulationstudyofthestratamovementruleofdeepminingwiththesuperthickandweakcementationoverburdenacasestudyinchina AT qingkunguo numericalsimulationstudyofthestratamovementruleofdeepminingwiththesuperthickandweakcementationoverburdenacasestudyinchina AT sifengzhang numericalsimulationstudyofthestratamovementruleofdeepminingwiththesuperthickandweakcementationoverburdenacasestudyinchina AT jianfengwu numericalsimulationstudyofthestratamovementruleofdeepminingwiththesuperthickandweakcementationoverburdenacasestudyinchina
_version_	1718418371260710912

Numerical Simulation Study of the Strata Movement Rule of Deep Mining with the Super-Thick and Weak Cementation Overburden: A Case Study in China

Ejemplares similares