水玻璃固化冰碛物的强度及固结机理分析

硅酸盐通报 ›› 2024, Vol. 43 ›› Issue (6): 2217-2224.

水玻璃固化冰碛物的强度及固结机理分析

杨朝义¹, 韩江峰², 朱乾坤¹, 丁林娜³, 卞立波³, 刘娟红⁴

1.云南迪庆有色金属有限公司,迪庆 674400;
2.云南铜业股份有限公司,昆明 650000;
3.北京建筑大学土木与交通工程学院,北京 102612;
4.北京科技大学土木与资源工程学院,北京 100083

收稿日期:2023-11-09 修订日期:2024-01-09 出版日期:2024-06-15 发布日期:2024-06-18
通信作者: 刘娟红,博士,教授。E-mail:Juanhong1966@hotmail.com
作者简介:杨朝义(1987—),男,高级工程师。主要从事采矿工程方面的研究。E-mail:342235766@qq.com

Strength and Consolidation Mechanism of Glacial Moraine Solidified with Water Glass

YANG Chaoyi¹, HAN Jiangfeng², ZHU Qiankun¹, DING Linna³, BIAN Libo³, LIU Juanhong⁴

1. Yunnan Diqing Nonferrous Metals Co., Ltd, Diqing 674400, China;
2. Yunnan Copper Co., Ltd., Kunming 650000, China;
3. School of Civil and Transportation Engineering, Beijing University of Civil Engineering and Architecture, Beijing 102612, China;
4. School of Civil and Resource Engineering, University of Science and Technology Beijing, Beijing 100083, China

Received:2023-11-09 Revised:2024-01-09 Online:2024-06-15 Published:2024-06-18

摘要/Abstract

摘要： 为解决普朗铜矿在开采过程中地表松散冰碛物堆积造成地面塌陷和泥石流的问题,本文采用水玻璃复合酯类固化剂制备固结材料固结冰碛物,对冰碛物固结体的抗压强度进行了研究,并通过XRD、FTIR、DSC-TG和SEM对水玻璃复合酯类固化剂固结材料固结冰碛物的固结机理进行了探究。结果表明,冰碛物固结体28 d抗压强度最高可达2.05 MPa,具有较好的固结性能。酯类固化剂作用下,水玻璃水解产物与酯类固化剂的水解产物反应生成乙酸钠和硅凝胶,硅凝胶起到了填充冰碛物颗粒之间的空隙、胶结冰碛物颗粒的作用。

关键词: 酯类固化剂, 水玻璃, 冰碛物, 凝胶, 水合乙酸钠, 固结

Abstract: In order to solve the problem of ground collapse and mudslide caused by the accumulation of loose moraine on the surface of Pulang copper mine in the process of mining, this article prepared a solidified material to solidify moraine with water glass composite ester curing agent. The compressive strength of moraine solidified body was studied, and the consolidation mechanism of water glass composite ester curing agent for consolidating moraine was explored through XRD, FTIR, DSC-TG and SEM. The results show that the moraine solidified body 28 d compressive strength can reach up to 2.05 MPa, indicating good consolidation performance. Under the action of ester curing agent, the hydrolysate of water glass reacts with the hydrolysate of ester curing agent to produce sodium acetate and silicon gel, and silicon gel plays a role in filling the gap between moraine particles and cementing moraine particles.

Key words: ester curing agent, water glass, moraine, gel, sodium acetate hydrate, consolidation

中图分类号:

TD265.4⁺4

杨朝义, 韩江峰, 朱乾坤, 丁林娜, 卞立波, 刘娟红. 水玻璃固化冰碛物的强度及固结机理分析[J]. 硅酸盐通报, 2024, 43(6): 2217-2224.

YANG Chaoyi, HAN Jiangfeng, ZHU Qiankun, DING Linna, BIAN Libo, LIU Juanhong. Strength and Consolidation Mechanism of Glacial Moraine Solidified with Water Glass[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2024, 43(6): 2217-2224.

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