Study of in-situ sieving ezperiment and gradation optimization of gangue

摘要：

The anti-compression capability of gangue affects the controlling effect of coal mining with gangue backfilling obviously. Meanwhile, the anti-compression capability of gangue depends on their gradation characteristics. Taking the filling gangue of backfilling mining face No. 1603 in Jisan coal mine as a case study, an in-situ experiment is conducted with the gangue of underground mine by sieving method, and the composition characteristic of the gangue is obtained. Based on this, gangue gradation is optimized by continuous gradation theory. The result shows that 1) the original gangue has a clear gradation flaw: with a high content of large-sized particles and a low content of small-sized particles; 2) the gangue after continuous gradation has a better anti-compression than original ones; and 3) when the index of Talbol formula is 0.4, the anti-compression capability is the best, with an increase of 21% compared to the original gangue.

关键词： gangue backfilling mining subsidence gangue gradation optimization

作者: Zha Jian-feng Guo Guang-li Wang Qiang Ma Zhan-guo

作者单位: Jiangsu Key Laboratory of Resources and Environmental Information Engineering, China University of M School of Sciences, China University of Mining & Technology, Xuzhou 221116, China

会议类型: 国际会议

会议名称: The 6th International Conference on Mining Science & Technology ICMST 2009(第六届国际矿业科学技术大会)

会议地点: 徐州

会议语种:英文

页码: 1-6

在线出版日期: 2009-10-18（万方平台首次上网日期，不代表论文的发表时间）