A New Plugging Technology and Its Application for the Extensively Collapsed Ore Pass in the Non-Empty Condition

He Chen, Shibo Yu, Zhixiu Wang and Ye Yuan
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He Chen: School of Civil and Resource Engineering, University of Science and Technology Beijing, Beijing 100083, China
Shibo Yu: School of Civil and Resource Engineering, University of Science and Technology Beijing, Beijing 100083, China
Zhixiu Wang: BGRIMM Technology Group, Beijing 100160, China
Ye Yuan: BGRIMM Technology Group, Beijing 100160, China

Energies, 2018, vol. 11, issue 6, 1-15

Abstract: Aiming at some long ore passes with severe damages and extensive collapses, we describe an optimal measure to plug a local area of ore pass in order to maintain the capacity of continued use. This paper, taking a new plug for the extensively collapsed long ore pass in the non-empty condition as a breakthrough, builds a structure-plugging system for ore pass based on plug effect, suspension effect, arch effect, and span-reducing effect. Meanwhile, a key plugging technology has been integrated which includes a stability evaluation method of plugging structure, controlled technology of drilling with casing in the composite rock mass, and controllable grouting for inhomogeneous loose rock mass. According to this structure-plugging system and technology, a case has been successful for the main ore pass in the Xingshan Iron Mine in China, which has created a precedent in the world. The practice results show that using this technology to plug the extensively collapsed long ore pass has a series of advantages including of scientific design, strong safety, high efficiency, and low cost.

Keywords: ore pass; casing; prestressed cable; structure-plugging system; grouting (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2018
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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