(北京科技大學(xué) 土木與資源工程學(xué)院 金屬礦山高效開采與安全教育部重點(diǎn)實(shí)驗(yàn)室，北京 100083)
摘 要: 全尾砂非膠結(jié)充填是礦山經(jīng)濟(jì)高效的充填方式，如何實(shí)現(xiàn)采場(chǎng)快速有效地脫水是非膠結(jié)充填中最難解決的問題。研究壓風(fēng)強(qiáng)化脫水機(jī)理，根據(jù)相似原理建立采場(chǎng)壓風(fēng)強(qiáng)化脫水實(shí)驗(yàn)?zāi)Ｐ汀Ｍㄟ^實(shí)驗(yàn)探索壓風(fēng)強(qiáng)化脫水工藝參數(shù)，并得出壓風(fēng)強(qiáng)化脫水管參數(shù)，為礦山全尾砂非膠結(jié)充填壓風(fēng)強(qiáng)化脫水工藝提供理論指導(dǎo)。利用流體力學(xué)數(shù)值模擬軟件FLUENT建立壓風(fēng)強(qiáng)化脫水?dāng)?shù)值分析模型，通過壓風(fēng)強(qiáng)化脫水?dāng)?shù)值模擬分析，揭示全尾砂非膠結(jié)充填壓風(fēng)強(qiáng)化脫水過程中氣、水運(yùn)移規(guī)律及強(qiáng)化脫水效果的影響因素，進(jìn)一步驗(yàn)證全尾砂非膠結(jié)充填壓風(fēng)強(qiáng)化脫水的可行性。
關(guān)鍵字: 非膠結(jié)充填；脫水；壓風(fēng)；全尾砂；數(shù)值模擬
（Key Laboratory for High Efficient Mining and Safety in Mental Mine, Ministry of Education, School of Civil and Resources Engineering, University of Science and Technology Beijing, Beijing 100083, China）
Abstract:Non-cemented backfilling in unclassified tailings is the most economical and efficient way of backfilling for the mine, whereas, the most difficult question of non-cemented backfilling in unclassified tailings is how to achieve fast and efficient dehydration for the non-cemented filing body. The mechanism of forced dehydration by pressing wind was studied, and a laboratory model was established according to the similarity principle. The technological parameters of forced dehydration, including parameters of dehydration tubes that provides theoretical guidance for the unclassified tailings non-cemented filling in the way of forced dehydration by pressing wind were explored by experiments. The numerical simulation analysis of forced dehydration was carried out by using the fluid dynamics simulation software FLUENT. The results reveal the migration regularity of gas and water in the process of forced dehydration and further validate feasibility of the forced dehydration by pressing wind in the unclassified tailings non-cemented backfilling.
Key words: non-cemented backfilling; dehydration; pressing wind; unclassified tailings; numerical simulation
