采空区注浆堵水材料性能分析及应用实践
Performance Analysis and Application Practice of Grouting and Water Shut-off Material in Goaf
张鹤缤 1田德志1
作者信息
- 1. 中国冶金地质总局第三地质勘查院,山西 太原 030000
- 折叠
摘要
工作面涌水的有效治理对于保证煤矿安全生产意义重大.以山西省A矿为试验矿井,研发了新的堵水材料并进行了工程应用.研究结果表明:新材料凝结时间最短可达 45 s,随着水灰比的增加,抗压强度逐渐降低,最大值超过 16 MPa,浆液泌水率小于 5%;岩样的颗粒流失率最大为 0.6%,最小为 0.2%,材料抗分散性好,裂隙充填区域能够很好地胶结到一起;采空区注浆堵水后,实现了安全开采.
Abstract
Effective management of the water inflow at the working face is of great significance to safe production.Taking A Mine as a test mine,a new water blocking material was developed and applied in engineering.The research results show that the shortest setting time can reach 45 s,the compressive strength gradually decreases with the increase of the water-cement ratio,the maximum can reach 16 MPa,the grout bleeding rate is less than 5%;the particle loss rate of the rock sample is the maximum 0.6%,and the minimum is 0.2%,the material has good dispersion resistance,and the fissure filling area can be well cemented together;after the goaf is grouted and water blocked,safe mining is realized.
关键词
采空区/注浆堵水/新型封堵材料/材料性能Key words
goaf/grouting to block water/new sealing materials/material properties引用本文复制引用
出版年
2024
NETL
NSTL
维普
万方数据