水玻璃-固化剂固化地表冰碛物试验研究  

Experimental Study on Surface Moraine Solidified by Sodium Silicate-Curing Agent

作　　者：宋浩 孙伟[1] 王蓉[1] 冯兴隆 王少勇[3] 曾庆田 眭素刚 SONG Hao;SUN Wei;WANG Rong;FENG Xinglong;WANG Shaoyong;ZENG Qingtian;SUI Sugang(Faculty of Land Resources Engineering,Kunming University of Science and Technology,Kunming 650093,China;Yunnan Diqing Nonferrous Metal Co.,Ltd.,Shangri-La 674400,China;School of Civil and Resource Engineering,University of Science and Technology Beijing,Beijing 100083,China;Kunming Prospecting Design Institute of China Nonferrous Metals Industry Co.,Ltd.,Kunming 650051,China)

机构地区：[1]昆明理工大学国土资源工程学院,昆明650093 [2]云南迪庆有色金属有限责任公司,云南香格里拉674400 [3]北京科技大学土木与资源工程学院,北京100083 [4]中国有色金属工业昆明勘察设计研究院有限公司,昆明650051

出　　处：《有色金属工程》2023年第10期118-125,共8页Nonferrous Metals Engineering

基　　金：国家自然科学基金资助项目(51964023);云南省重大科技项目(202202AG050014);云南省基础研究计划项目(202101BE070001-038,202201AT070146)。

摘　　要：针对普朗铜矿矿区地质环境较为脆弱,开采过程中地表形成塌陷坑,以及在连续降雨量时地表冰碛物吸水饱和,易诱发井下泥石流灾害等问题,开展水玻璃-固化剂浆液胶凝时间和冰碛物土固结体强度的影响因素及影响规律试验。结果表明:水玻璃-固化剂混合液中,随催化剂的浓度增大时,浆液凝胶时间减小;水玻璃-固化剂浆液胶凝时间随固化剂浓度的增加呈先减小后增大规律;水玻璃-固化剂浆液胶凝时间随水玻璃浓度增加而减小;水玻璃浓度与固化剂浓度都对冰碛物固结体抗压强度起积极作用。实验结果可为地表冰碛物现场注浆固化提供理论依据。The geological environment of Pulang copper mine is fragile,and collapse pits will be formed on the surface during mining.When continuous rainfall occurred,the surface moraine is saturated in water absorption and flows into the mine outlet,causing debris flow disaster in the underground.In response to this problem,experiments on the influencing factors and influencing rules about the gelling time of sodium silicate-curing agent slurry and the strength of moraine soil consolidation are carried out.The experimental results show that the slurry gels faster as the concentration of the catalyst increases in the mixture of sodium silicate-curing agent.The gelation time of sodium silicate-curing agent slurry decreases first and then increases with the concentration of curing agent increasing.Meanwhile,with the increase of sodium silicate′s concentration it will spend less time for sodium silicate-curing agent slurry gelling.In addition,both the concentration of sodium silicate and the concentration of curing agent have a positive effect on the compressive strength of the moraine consolidation body.The experimental results can provide a theoretical basis for the grouting solidification of surface moraine.

关 键 词：冰碛物 泥石流 水玻璃-固化剂 胶凝时间 固结体抗压强度 

分 类 号：TD74[矿业工程—矿井通风与安全]