Stacking angle of slurry-aeolian sand dual-phase medium filling material

Authors

BAI Zhongrong, Xi’an Research Institute Co. Ltd., China Coal Technology and Engineering Group Corp., Xi’an 710079, China

Abstract

Stacking angle is an important parameter to describe the spatial accumulation pattern of filling material in the goaf. It has important guiding significance for determining the drilling distance, optimizing the slurry configuration and adjusting the grouting process parameters. In order to grasp the variation law of stacking angle of slurry-aeolian sand dual-phase medium filling material, using self-flow stacking model experiment of tailings and rheological properties experiment, the mixing ratio of aeolian sand was taken as a variable to determine the slurry accumulation parameters and rheological parameters on different conditions of sand ratio. Based on this, Sofra & Boger formula was modified and the accumulation angle calculation formula suitable for slurry-aeolian sand dual-phase media filling material was established, which provided a new way for the quantitative evaluation of filling material stacking angle.

Keywords

goaf, stacking angle, aeolian sand, model experiment, rheological properties

DOI

10.3969/j.issn.1001-1986.2020.03.004

Recommended Citation

B. (2020) "Stacking angle of slurry-aeolian sand dual-phase medium filling material," Coal Geology & Exploration: Vol. 48: Iss. 3, Article 5.
DOI: 10.3969/j.issn.1001-1986.2020.03.004
Available at: https://cge.researchcommons.org/journal/vol48/iss3/5

Reference

[1] 冀前辉. 废弃煤矿废弃物地下灌注技术可行性探讨[J]. 煤田地质与勘探,2014,42(4):69-76. JI Qianhui. Feasibility of waste backfilling in abandoned coal mine[J]. Coal Geology & Exploration,2014,42(4):69-76.

[2] 刘浪,辛杰,张波,等. 矿山功能性充填基础理论与应用探索[J]. 煤炭学报,2018,43(7):1811-1820. LIU Lang,XIN Jie,ZHANG Bo,et al. Basic theories and applied exploration of functional backfill in mines[J]. Journal of China Coal Society,2018,43(7):1811-1820.

[3] 童立元,刘松玉,邱钰,等. 高速公路下伏采空区问题国内外研究现状及进展[J]. 岩石力学与工程学报,2004,23(7):1198-1202. TONG Liyuan,LIU Songyu,QIU Yu,et al. Current research state of problems associated with mined-out regions under expressway and future development[J]. Chinese Journal of Rock Mechanics and Engineering,2004,23(7):1198-1202.

[4] 刘鹏亮,张华兴,崔锋,等. 风积砂似膏体机械化充填保水采煤技术与实践[J]. 煤炭学报,2017,42(1):118-126. LIU Pengliang,ZHANG Huaxing,CUI Feng,et al. Technology and practice of mechanized backfill mining for water protection with aeolian sand paste-like[J]. Journal of China Coal Society,2017,42(1):118-126.

[5] 张鹏飞,赵同彬,傅知勇,等. 矸石充填采空区顶板沉降规律及矸石承载特性分析[J]. 煤炭科学技术,2018,46(11):50-56. ZHANG Pengfei,ZHAO Tongbin,FU Zhiyong,et al. Analysis on roof subsidence law and gangue load bearing characteristics in gangue filling goaf[J]. Coal Science and Technology,2018,46(11):50-56.

[6] 刘辉,何春桂,董增林,等. 高水材料充填技术在减小地表沉降中的应用[J]. 煤田地质与勘探,2010,38(6):54-57. LIU Hui,HE Chungui,DONG Zenglin,et al. Surface subsidence based on filling technology with materials of high water content[J]. Coal Geology & Exploration,2010,38(6):54-57.

[7] 邱华富,刘浪,孙伟博,等. 采空区充填体强度分布规律试验研究[J]. 中南大学学报(自然科学版),2018,49(10):2584-2592. QIU Huafu,LIU Lang,SUN Weibo,et al. Experimental study on strength distribution of backfill in goaf[J]. Journal of Central South University(Science and Technology),2018,49(10):2584-2592.

[8] 王新民. 基于深井开采的充填材料与管输系统的研究[D]. 长沙:中南大学,2006. WANG Xinming. A study of filling materials and pipeline transportation systems in deep mines[D]. Changsha:Central South University,2006.

[9] 赵才智. 煤矿新型膏体充填材料性能及其应用研究[D]. 徐州:中国矿业大学,2008. ZHAO Caizhi. Study on coal mine new paste filling material properties and its application[D]. Xuzhou:China University of Mining and Technology,2008.

[10] 白仲荣. 采空区内浆料堆积规律试验研究[D]. 北京:煤炭科学研究总院,2016. BAI Zhongrong. Experimental study on the law of slurry packing in goaf[D]. Beijing:China Coal Research Institute,2016.

[11] 陈安惠,陈寿根,张恒. 高速公路下伏采空区风积沙充填技术试验研究[J]. 岩土工程与地下工程,2013,33(1):57-59. CHEN Anhui,CHEN Shougen,ZHANG Heng,et al. Experimental study on filling technology of aeolian sand in mined-out area under expressway[J]. Geotechnical Engineering and Underground Engineering,2013,33(1):57-59.

[12] SOFRA F,BOGER D V. Slope prediction for thickened tailings and paste[C]//8^thinternational conference tailings and mine waste. Colorado:Colorado National University,2000:20-31.

[13] FITTON T. Tailings beach slope prediction[D]. RMIT University,2007.

[14] KWAK M. Flow behavior of tailing paste for surface disposal[J]. Mineral Processing,2005:201-227.

[15] JEWELL R J,FOURIE A B. Paste and thickened tailings:A Guide[M]. Perth:Australian Centre for Geomechanics,2002.

[16] 王晓东. 风积砂质高浓度胶凝充填材料性能与粉煤灰掺量关系分析[J]. 工程地质学报,2016,24(1):78-86. WANG Xiaodong. Relationship between engineeringer formance and mix proportion of fly ash for cemented and high concentration backfill material with wind-blown sand as aggregate[J]. Journal of Engineering Geology,2016,24(1):78-86.

[17] 王晓东. 风积沙质胶结充填材料性能对水固比响应分析[J]. 煤田地质与勘探,2016,44(6):106-112. WANG Xiaodong. Influence of the performance of aeolian erinaceous cemented filling materials on response of water-solid ratio[J]. Coal Geology & Exploration,2016,44(6):106-112.

[18] 朱世彬,王晓东,许刚刚,等. 煤矿采空区充填高浓度胶结材料流变特性试验研究[J]. 煤炭科学技术,2017,45(11):69-73. ZHU Shibin,WANG Xiaodong,XU Ganggang,et al. Experimental study on rheological properties of high concentration cementing materials in coal mine goaf filling[J]. Coal Science and Technology,2017,45(11):69-73.

[19] ADDIS P C,CUNNINGHAM E J. Comparison of beaching slopes from two centrally discharging tailings storage facilities[C]//C. Loan. I.M. Artbuthout. Proceedings of the 13^th international seminar on paste and thickened tailings. Canada,2010:255-264.

[20] 习泳,杨盛凯,尹升华. 膏体自流坡度经验公式的检验与回归[J]. 中国矿山工程,2013,42(1):19-22. XI Yong,YANG Shengkai,YIN Shenghua. Verification and regression of empirical formula of paste gravity slope[J]. China Mine Engineering,2013,42(1):19-22.