(1. National Centre for International Research on Green Metal Mining, BGRIMM Technology Group, Beijing 102628, China;
2. Yunnan Gold Mining Group Co., Ltd., Kunming, Yunnan 650299, China)
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.
[1] 程海勇，吴爱祥，吴顺川，等. 金属矿山固废充填研究现状与发展趋势[J]. 工程科学学报，2022，44(1)：11–25.(CHENG Haiyong，WU Aixiang，WU Shunchuan，et al. Research status and development trend of solid waste backfill in metal mines[J]. Chinese Journal of Engineering，2022，44(1)：11–25.(in Chinese))
[2] 魏晓明，郭利杰，李宗楠. 基于宏微观耦合分析胶结充填体强度差异的研究[J]. 中国矿业，2018，27(6)：95–99.(WEI Xiaoming，GUO Lijie，LI Zongnan. Study on the strength difference of cemented backfill based on macro-micro coupling analysis[J]. China Mining Magazine，2018，27(6)：95–99.(in Chinese))
[3] ALIREZA G，MAMADOU F. Strength evolution and deformation behaviour of cemented paste backfill at early ages：Effect of curing stress，filling strategy and drainage[J]. International Journal of Mining Science and Technology，2016，26(5)：809–817.
[4] YILMAZ E， BENZAAZOUA M，BELEM T. Effect of curing under pressure on compressive strength development of cemented paste backfill[J]. Minerals Engineering，2009，(22)，772–785.
[5] 魏晓明. 高阶段全尾砂胶结充填体强度特性及充填体配比设计研究[博士学位论文][D]. 北京：北京科技大学，2018.(WEI Xiaoming. Study on strength characteristics and ratio design of high stage whole tailing cemented backfill[Ph. D. Thesis][D]. Beijing：University of Science and Technology Beijing，2018.(in Chinese))
[6] 魏晓明，郭利杰，李长洪，等. 高阶段胶结充填体强度空间变化规律研究[J]. 岩土力学，2018，39(增2)：45–52.(WEI Xiaoming，GUO Lijie，LI Changhong，et al. Study of space variation law of strength of high stage cemented backfill[J]. Rock and Soil Mechanics，2018，39(Supp.2)：45–52.(in Chinese))
[7] 陈 寅，郭利杰，魏晓明，等. 掺加冶炼渣的混合骨料原位胶结充填体质量评价研究[J]. 中国矿业，2019，28(增1)：234–237.(CHEN Yin，GUO Lijie，WEI Xiaoming，et al. Quality evaluation of in-situ cemented backfill of mixed aggregate with smelting slag[J]. China Mining Magazine，2019，28(Supp.1)：234–237.(in Chinese))
[8] 张世超，姚中亮. 安庆铜矿特大型采场充填体稳定性分析[J]. 矿业研究与开发，2001，(4)：12–15.(ZHANG Shichao，YAO Zhongliang. Analysis on the stability of fill of extra large stopes in Anqing copper mine[J]. Mining Research and Development，2001，(4)：12–15.(in Chinese))
[9] 刘光生. 充填体与围岩接触成拱作用机理及强度模型研究[博士学位论文][D]. 北京：北京科技大学，2017.(LIU Guangsheng. Required strength model of cemented backfill with research on arching mechanism considering backfill-rock interaction[Ph. D. Thesis][D]. Beijing：University of Science and Technology Beijing，2017.(in Chinese))
[10] 邓代强，汪令辉，王发芝，等. 采空区充填配比参数设计及工程检验[J]. 福州大学学报：自然科学版，2013，(2)：207–212.(DENG Daiqiang，WANG Linghui，WANG Fazhi，et al. Ratio parameter design and engineering detecting of backfill in goaf[J]. Journal of Fuzhou University：Natural Science，2013，(2)：207–212.(in Chinese))
[11] 王正辉. 充填体的质量与控制[J]. 采矿技术，2001，(3)：3–5.(WANG Zhenghui. Quality and control of cemented backfill[J]. Mining Technology，2001，(3)：3–5(in Chinese))
[12] 高 直，张海军. 影响中深部充填质量的因素探讨及对策[J]. 铜业工程，2009，(4)：11–14.(GAO Zhi，ZHANG Haijun. Discussion and strategy research to the influential factors of deep filling quality[J]. Copper Engineering，2009，(4)：11–14.(in Chinese))
[13] 杨志强，陈得信，高 谦，等. 金川镍矿充填系统与工艺调查及提高充填质量技术措施[J]. 矿冶，2015，24(3)：10–14.(YANG Zhiqiang，CHEN Dexin，GAO Qian，et al. Technical measures to improve the quality of filling body by the investigation of filling system and process in Jinchuan mine[J]. Mining and Metallurgy，2015，24(3)：10–14.(in Chinese))
[14] 于海清. 二次制备中充填体质量的影响因素研究[J]. 采矿技术，2015，15(3)：33–34.(YU Haiqing. Study on the influencing factors of filling material quality in secondary preparation[J]. Mining Technology，2015，15(3)：33–34.(in Chinese))
[15] LI L，AUBERTIN M，BELEM T. Formulation of a three dimensional analytical solution to evaluate stresses in backfilled vertical narrow openings[J]. Canadian Geotechnical Journal，2005，42(5)：1 705–1 717.
[16] ALIREZA G，MAMADOU F. Coupled behavior of cemented paste backfill at early ages[J]. Geotechnical and Geological Engineering，2015，33(5)：1 141–1 166.
[17] BELEM T，BENZAAZOUA M. Design and application of underground mine paste backfill technology[J]. Geotechnical and Geological Engineering，2008，26(2)：147–174.
[18] GRABINSKY M，BAWDEN W，THOMPSON B. Required plug strength for continuously poured cemented paste backfill in Longhole stopes[J]. Mining，2021，1(1)：80–99.
[19] 杨志强，高 谦，王永前，等. 金川全尾砂–棒磨砂混合充填料胶砂强度与料浆流变特性研究[J]. 岩石力学与工程学报，2014，33(增2)：3 985–3 991.(YANG Zhiqiang，GAO Qian，WANG Yongqian，et al. Research on filling body strength and rheological properties of mixed filling mortar with unclassified tailings and rod milling sand in Jinchuan mine[J]. Chinese Journal of Rock Mechanics and Engineering，2014，32(Supp.2)：3 985–3 991.(in Chinese))
[20] 刘 超，韩 斌，孙 伟，等. 高寒地区废石破碎胶结充填体强度特性试验研究与工业应用[J]. 岩石力学与工程学报，2015，34(1)：139–147.(LIU Chao，HAN Bin，SUN Wei，et al. Experimental study of strength of back fillings of cemented rock debris and its application under low temperature condition[J]. Chinese Journal of Rock Mechanics and Engineering，2015，34(1)：139–147.(in Chinese))
[21] 曹 帅. 胶结充填体结构与动力学特性研究及应用[博士学位论文][D]. 北京：北京科技大学，2017.(CAO Shuai. Research on structural characteristics and dynamic effects of cemented tailing backfilling and its application[Ph. D. Thesis][D]. Beijing：University of Science and Technology Beijing，2017.(in Chinese))
[22] 彭啸鹏. 金属矿尾砂充填体分层非均质特性及其形成机理研究[博士学位论文][D]. 北京：北京科技大学，2020.(PENG Xiaopeng. Research on heterogeneous features of tailings backfill in metal mine and its mechanism[Ph. D. Thesis][D]. Beijing：University of Science and Technology Beijing，2020.(in Chinese))
[23] 沈慧明，吴爱祥，焦华喆，等. 采场充填分层次数对充填体强度的折减效应[J]. 现代矿业，2021，37(10)：74–78.(SHEN Huiming，WU Aixiang，JIAO Huazhe，et al. Reduction effect of stope filling layering times on filling body strength[J]. Modern Mining，2021，37(10)：74–78.(in Chinese))
[24] 中华人民共和国国家标准编写组. GB/T 4883—2008数据的统计处理和解释 正态样本离群值的判断和处理[S]. 北京：中国标准出版社，2008.(The National Standards Compilation Group of People?s Republic of China. GB/T 4883—2008 Statistical interpretation of data - Detection and treatment of outliers in the normal sample[S]. Beijing：Standards Press of China，2008.(in Chinese))
[25] 中华人民共和国国家标准编写组. GB50153—2008工程结构可靠性设计统一标准[S]. 北京：中国建筑工业出版社，2008.(The National Standards Compilation Group of People?s Republic of China. GB 50153—2008 Unified standard for reliability design of engineering structures[S]. Beijing：China Architecture and Building Press，2008.(in Chinese))
[26] 中华人民共和国国家标准编写组. GB/T 50476—2019混凝土结构耐久性设计标准[S]. 北京：中国建筑工业出版社，2019.(The National Standards Compilation Group of People?s Republic of China. GB/T 50476—2019 Standard for design of concrete structure durability[S]. Beijing：China Architecture and Building Press，2019.(in Chinese))
[27] 魏晓明，郭利杰，周小龙，等. 高阶段胶结充填体全时序应力演化规律及预测模型研究[J]. 岩土力学，2020，41(11)：3 613–3 620. (WEI Xiaoming，GUO Lijie，ZHOU Xiaoming，et al. Study of space variation law of strength of high stage cemented backfill[J]. Rock and Soil Mechanics，2020，41(11)：3 613–3 620.(in Chinese))
2026, Vol. 45 
