Technology Research of Large Underwater Ultra-deep Curtain Grouting in Zhong-guan Iron Ore
Problems in Zhong-guan Iron Ore are complicated hydrogeological conditions, larger water inflow in mine ore, all ore bodies buried under the water table, ordovician limestone aquifer in the system directly to the roof for the ore body. Paper used ring-type single-row curtain grouting closed ground plan. This has not only achieved the safety of mining, but also protected ground water resources and hydro-geological environment. Study has shown that: the elevation of purdah base is -96 m ~ -568 m, the average drilling depth is 523.92 m, the minimum hole depth is 321 m, and the maximum is 810 m, holes depth greater than 600 m take up about 30.8 A single slurry material can allow seepage gradient and the curtain can withstand the maximum head difference design curtain thickness T ≥ 10 m, grouting hole spacing is designed to 12 m; curtain grouting pressure is 2 times of the head pressure. Research improves reference for similar mines.
Large underwater Ultra-deep curtain grouting Grouting parameters
Li Zhenfang Guo Dongming Wang Yanbing Zhen Zenglin
School of Mechanics and Architecture Engineering, China University of Mining and Technology (Beijing), Beijing 100083 China
国际会议
The First International Symposium on Mine Safety Science and Engineering (首届矿山安全科学与工程学术会议)
北京
英文
751-757
2011-10-27（万方平台首次上网日期，不代表论文的发表时间）