Key grouting technology and engineering demonstration for green mines

Du Jinlong; Pan Shuren; Liu Changyou; Wei Yunxun; Lu Yan; Pan Haiyang; Qi Kuan; Zhao Ming; Liu Housong; Yao Hongxin; Zhou Yao; Yan Jia; Li Shinian; Zhang Biao; Zhang Sinuo

doi:10.19606/j.cnki.jmst.2023.03.002

Volume 8 Issue 3

Jun. 2023

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Article Navigation > Journal of Mining Science and Technology > 2023 > 8(3): 293-307

Du Jinlong, Pan Shuren, Liu Changyou, Wei Yunxun, Lu Yan, Pan Haiyang, Qi Kuan, Zhao Ming, Liu Housong, Yao Hongxin, Zhou Yao, Yan Jia, Li Shinian, Zhang Biao, Zhang Sinuo. Key grouting technology and engineering demonstration for green mines[J]. Journal of Mining Science and Technology, 2023, 8(3): 293-307. doi: 10.19606/j.cnki.jmst.2023.03.002

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Key grouting technology and engineering demonstration for green mines

doi: 10.19606/j.cnki.jmst.2023.03.002

1.
CNACG Ecological Environment Technology Co., Ltd., Beijing 100070, China
2.
China National Administration of Coal Geology, Beijing 100038, China
3.
School of Mines, China University of Mining & Technology, Xuzhou Jiangsu 221116, China
4.
General Prospecting Institute of China National Administration of Coal Geology, Beijing 100039, China
5.
Jiangsu Design Institute of Geology for Mineral Resources, Xuzhou Jiangsu 221006, China
6.
China Coal Geology Group Co., Ltd., Beijing 100040, China

Received Date: 2022-10-25
Rev Recd Date: 2023-02-19
Publish Date: 2023-06-30

Abstract

Abstract

This study proposed the multi-coupling grouting system with the aim to tackle green mine problems such as surface collapse, water resources destruction and coal based solid waste accumulation.Successfully applied, this system yielded the following major achievements: this study (1) probed into the patterns of development and evolution in mining separation space and primary fracture space, and conducted the intelligent identification of grouting space by means of theoretical analysis, physical and numerical simulation and field detection.(2) prepared multi-source inorganic high-performance grouting materials for different scenarios by using coal-based solid wastes (coal gangue, fly ash), and developed a new KEP grouting material with underwater dispersion resistance, high volume coefficient and high plastic strength.(3) applied cluster well and feather well to grouting hole drilling and and developed an all-weather, high pump pressure and large flow intelligent grouting system; The reinforcement grouting technology is applied for the first time to strengthen the effect of grouting to reduce settlement.(4)put forward the technology system of grouting effect monitoring and detection, and emphatically expounded the borehole detection method of combining drilling core and well logging.(5)formed an intelligent technology system based on the methods of separation space grouting to reduce settlement and treat waste, caving zone grouting to treat waste, goaf grouting to strengthen foundation bearing capacity and treat waste, and roof fissure grouting to control water gushing as the core.Engineering demonstrations of this system have been carried out in Xiadian coal mine, Xinpu phosphate mine, Caojiatan coal mine, Gaojiabao coal mine and other places, which yielded good results.
- green mine,
- multivariate coupling,
- intellectualization,
- key grouting technology,
- engineering demonstration

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References(24)

References

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Key grouting technology and engineering demonstration for green mines

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