原位胶结充填体质量评价研究

doi:10.3724/1000-6915.jrme.2025.0777

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Abstract As metallic and non-metallic mines increasingly adopt cemented filling methods, the quality of in-situ cemented backfill becomes crucial for safe mining operations. Based on the layered structural characteristics of in-situ cemented backfill, a quantitative index of continuity (BID) was proposed using the core sample block division standard. In conjunction with the apparent characteristics of the in-situ backfill core samples, a grading system for core integrity was established. The reliability of the structural stability of the in-situ cemented backfill was assessed through a coupling analysis of the exposed characteristics of the backfill and the strength data from core samples. Building upon this foundation, a quality grading standard for in-situ cemented backfill was proposed for the first time, incorporating qualitative classification and quantitative assignment of four indicators: BID, apparent characteristics, structural reliability, and average strength. Additionally, the target strength and adjustment coefficient of the backfill under current quality control measures were determined. This grading standard addresses the existing gap in quality evaluation for in-situ cemented backfill both domestically and internationally, offering evaluation indicators that are straightforward, rapid, and highly applicable in engineering contexts.

Key words： mining engineering in-situ cemented backfill layered structure integrity indicators degree of reliability strength adjustment factor grading standard

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	Articles by authors
	WEI Xiaoming1*
	GUO Lijie1
	ZHANG Lei1
	FANG Lin2

Cite this article:

WEI Xiaoming1*,GUO Lijie1,ZHANG Lei1, et al. Quality evaluation of in-situ cemented backfill[J]. , 2026, 45(9): 2668-2679.

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https://rockmech.whrsm.ac.cn/EN/10.3724/1000-6915.jrme.2025.0777 OR https://rockmech.whrsm.ac.cn/EN/Y2026/V45/I9/2668

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