Experimental Study on MICP Technology for Strengthening Tail Sand under a Seepage Field. (24th October 2020)

• Record Type: Journal Article
• Authors: Zhang, Zhi-jun; Li, Biao; Hu, Lin; Zheng, Huai-miao; He, Gui-cheng; Yu, Qing; Wu, Ling-ling
• Other Names: Xu Jinze Academic Editor.
• Is Part Of: Geofluids. Volume 2020(2020)
• Publication Date: 2020-10-24
• Subjects: Hydrogeology -- Periodicals; Sedimentary basins -- Periodicals; Fluids -- Migration -- Periodicals; Groundwater flow -- Periodicals; Geothermal resources -- Periodicals; Fluid dynamics -- Periodicals; Earth -- Crust -- Periodicals; 551.49
• DOI: 10.1155/2020/8819326
• Languages: English
• ISSNs: 1468-8115

Abstract

Abstract : Microbial-induced calcium carbonate precipitation (MICP) technology is a new green reinforcing technology in soil stabilization. Targeting on the problem that seepage is the main factor of causing the instability of a tailings dam, a comparative experiment is conducted, which includes the MICP technology on reinforcing tailings with or without the effect of a seepage field. The results of the comparative experiment are as follow: the mercury penetration test indicates that, under the function of a seepage field, the total pore in the tailing is relatively decreased; SEM shows that under the function of a seepage field, the intergranular pore increases; the direct shear test shows that under the function of a seepage field, the tailings' shear strength decreases; the determination of calcium ion content shows that the distribution of calcium carbonate in the tailings under the action of a seepage field is more uneven.