中厚磷矿体上向式分层充填开采技术研究

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中图分类号：TD379；TQ177.6+6 文献标志码：A 文章编号：1001-5922（2026）03-0806-04

Study on upward slicing and filling mining technology for medium-thick phosphate ore bodies

ZHAO Peng1'³ ，SHANG Pengqiang² ，ZHANG Peng³ ，SUN Guanghua4

（1.Hebei Industry-Academia-Research Emergency Technology Co.，Ltd.，Shijiazhuang O50081，China;

2. Sinochem Geological and Mining Administration，Beijing 10o013，China;

3. Hebei Jituo Emergency Technology Co.，Ltd.，Shijiazhuang O5Oooo，China School of Mining Engineering，North China Universityof Science and Technology，Tangshan O63210，Hebei China）

Abstract：To improve the mining safety，resourceutilizationrateand production efficiencyof medium-thick phosphateore bodies，aimingattheproblems ofrof instabilityandhighoreloss rateexisting inthetraditional room-andpillar method，this study proposes anupward slicing and filing mining technology based onthe optimization of cement-sand ratio.Through laboratory tests，the effctsof different cement-sand ratios on the 28d compresive and tensile strengths of fiber-doped mixed agegate cemented filing bodies were systematicall analyzed.The results show that the cement-sand ratio of 1：4 is the optimal ratio，with a compressive strength of 5.98MPa and a tensile strength of 1.26MPa ，which takes both strength and economy into account.In field application，this ratio reduces the frequency of roof accidents by 78.8% ，decreases the ore loss rate and dilution rate by 59.6% and 48.7% respectively ，increases the average daily output by 31.9% ，and controls the surface subsidence to be less than or equal to12 mm.The filing technologywith optimized cement-sand ratio can significantly improve the comprehensive mining benefitsof medium-thick phosphate ore bodiesand provide technical support for the constructionof green mines.

Key words：medium-thick phosphate ore body;upward slicing and filing;cement-sand ratio;fiber reinforcement; green mining

磷矿作为重要的非金属矿产资源，广泛应用于农业、化工等领域，其高效、安全开采对保障国家粮食安全和工业发展具有重要意义。（剩余4867字）