高深直溜井卸矿口产尘规律及防治技术研究
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摘要
针对夏甸金矿高深直溜井卸矿口的产尘能力、含尘气流时空演化规律及粒度分布规律进行了分析。卸矿口逸散含尘气流中,10μm粒径以上的粉尘占比为7%,而粒径在10μm以下的粉尘占比93%,呼吸性粉尘占比高。基于现场的通风条件、卸矿口尺寸面积及产尘规律,采用fluent软件进行模拟,对比分析了密闭抽尘前后的含尘气流运动轨迹,提出了密闭抽尘净化的治理措施。治理后高深直溜井卸矿口逸散的总粉尘浓度由420 mg/m3降低至8.7 mg/m3,降尘效率达到了97%以上,有效地解决了高深直溜井卸矿口粉尘逸散污染问题。
The dust production capacity, the dust air flow space-time evolution rules and the particle size distribution at discharge port in the high-deep straight well of Xiadian Gold Mine were analyzed. Among the dust-laden airflow at the discharge port, the proportion of dust with particle size above 10 μm is 7%, while the proportion of dust with particle size below10 μm is about 93%, and the proportion of respirable dust is high. Based on the on-site ventilation conditions, the size and area of the discharge port and the rule of dust production, the Fluent software was used to simulate the movement track of dustladen airflow before and after closed dust extraction, and the control measures of closed dust extraction and purification were put forward. After treatment, the total dust concentration at discharging port of the high-deep straight well was reduced from420 mg/m3 to 8.7 mg/m3 with the dust reduction efficiency of over 97%. Thus, the problem of dust emission pollution at discharging port of the high-deep straight well can be effectively solved.
The dust production capacity, the dust air flow space-time evolution rules and the particle size distribution at discharge port in the high-deep straight well of Xiadian Gold Mine were analyzed. Among the dust-laden airflow at the discharge port, the proportion of dust with particle size above 10 μm is 7%, while the proportion of dust with particle size below10 μm is about 93%, and the proportion of respirable dust is high. Based on the on-site ventilation conditions, the size and area of the discharge port and the rule of dust production, the Fluent software was used to simulate the movement track of dustladen airflow before and after closed dust extraction, and the control measures of closed dust extraction and purification were put forward. After treatment, the total dust concentration at discharging port of the high-deep straight well was reduced from420 mg/m3 to 8.7 mg/m3 with the dust reduction efficiency of over 97%. Thus, the problem of dust emission pollution at discharging port of the high-deep straight well can be effectively solved.
引文
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[3]吴国珉,刘金明,吴超.溜井放矿冲击气流的分析与污染控制措施[J].采矿技术,2007,7(4):40-41.Wu Guomin,Liu Jinming,Wu Chao.Analysis and control measures of impact airflow in ore drainage[J].Mining Technology,2007,7(4):40-41.
[4]李政.坑下矿山高溜井漏风及粉尘污染控制技术研究[J].有色金属:矿山部分,2006,58(5):42-45.Li Zheng.Study on control technology of leakage and dust pollution in mine high-leakage wells[J].Nonferrous Metals:Mining Section,2006,58(5):42-45.
[5]石长岩.红透山铜矿卸矿溜井系统防尘工艺技术综述[J].有色矿冶,2005,21(5):10-12.Shi Changyan.Review on technology of dust prevention about transfer system in Fushun Hongtoushan Copper Mine[J].Non-ferrous Mining and Metallurgy,2005,21(5):10-12.
[6]王海宁.矿山高溜井多片式挡风板应用研究[J].金属矿山,2005(3):58-59.Wang Haining.Investigation on application of split windshield in long mine pass[J].Metal Mine,2005(3):58-59.
[7]邹常富,刘勇,马威,等.综掘工作面粉尘的产生及运移规律研究[J].矿业安全与环保,2014,41(6):26-28.Zou Changfu,Liu Yong,Ma Wei,et al.Study on dust generation and movement laws in fully-mechanized heading face[J].Mining Safety&Environmental Protection,2014,41(6):26-28.
[8]宫锐,石长岩,康国朋.红透山铜锌矿多中段高溜井卸矿粉尘治理工艺[J].有色金属:矿山部分,2012,64(6):92-95.Gong Rui,Shi Changyan Kang Guopeng.Dust control technology of unloding ore with multi levels and high ore pass in Hongtoushan Copper-Zinc Mine[J].Nonferrous Metals:Mining Section,2012,64(6):92-95.
[9]张福群,刘冰心,吴静,等.可控循环通风技术的研究与应用[J].金属矿山,2006(11):8-11.Zhang Fuqun,Liu Bingxin,Wu Jing,et al.Research and application of controlled circulating ventilation technology[J].Metal Mine,2006(11):8-11.
[10]刘晓培,宫锐,常德强,等.金属矿山可控循环风利用与节能[J].金属矿山,2014(9):132-136.Liu Xiaopei,Gong Rui,Chang Deqiang,et al.Utilization and energy saving of controlled recirculating air study on metal mine[J].Metal Mine,2014(9):132-136.
[11]李锦峰,谢贤平,章能胜,等.区域受控循环通风过程中的高压喷雾降尘[J].金属矿山,2013(2):147-150.Li Jingfeng,Xie Xianping,Zhang Lengsheng,et al.Dust reduction of high-pressure spray system to regional controlled recirculation ventilation process[J].Metal Mine,2013(2):147-150.
[12]高文远,徐忠光.大断面长溜井高位堵塞疏通处理实践研究[J].金属矿山,2009(10):39-41.Gao Wenyuan,Xu Zhongguang.Practical research on dredging the high-level blockage for a long large section chute[J].Metal Mine,2009(10):39-41.
[13]吕向东.高深溜井井筒堵塞机理分析与治理[J].金属矿山,2015(11):158-163.Lu Xiangdong.Mechanism analysis and control of deep shafts wellbore plugging[J].Metal Mine,2015(11):158-163.
[14]陈雅,王明,蒋仲安,等.高溜井卸矿冲击气流产生规律及其影响因素的数值模拟[J].煤炭学报,2017,42(S1):178-185.Chen Ya,Wang Ming,Jiang Zhongan,et al.Numerical simulation of impact air flow generation and its influencing factors when unloading ore in high ore pass[J].Journal of China Coal Society,2017,42(S1):178-185.
[15]邹常富.高压喷雾参数优化及应用研究[J].矿业安全与环保,2016,43(6):9-12.Zou Changfu.Study on the optimization and application of high pressure spray parameters[J].Mining Safety&Environmental Protection,2016,43(6):9-12.