高性能注浆材料研究与围岩改性试验

Research on High Performance Grouting Material and Improving Surrounding Rock Mass Strength

为满足矿井工程高压突水及加固治理的需求,研制一种新型高性能注浆材料。根据注浆材料强度影响因素试验成果,优化设计高性能注浆材料配比。通过改装的固结仪进行注浆材料膨胀力、膨胀率、侧限条件下应力-应变关系试验以及渗透试验,结合试验结果分析新型注浆材料用于巷道围岩改性增强的可行性。结合工业性试验进一步验证高性能注浆材料在巷道围岩增强改性以及涌水封堵治理上的实用性与优越性,研究结果表明新型注浆材料能够满足防渗、防水、动压和变形的要求,为潮湿环境下矿井软岩巷道壁后填充和围岩注浆加固技术的实施提供了有效途径。

In order to meet the project demands of controlling mine water flooding with high pressure and reinforcement, a new high performance grouting material has been researched. Firstly, according to the factors affecting the strength of grouting material test results, a kind of optimized grouting material ratio is designed. Secondly, a series of indoor tests are developed by the improved consolidation apparatus, including grouting material expansion force, expansion ratio and unconfined condition stress strain relationship test, as well as the permeability test. Combined with the test results, the feasibility of the new grouting material to modify and reinforce roadway surrounding rock is analyzed. Finally, combined with the industrial experiment, the practicability and superiority of high performance grouting material in roadway surrounding rock reinforcing and modifying are further verified. Test results show that the new grouting material can well meet the requirements such as anti-seepage, water-proof, dynamic pressure and deformation, which could offer effective method to the enforcement of the strengthening technology of backfilling for soft rock tunnel and grouting for surrounding rock in condition that a mine is with a wet surrounding rock mass.