关于洛斯接增强材料机械性能和爬行发展的实验研究
Yuxi Guo1,2, Yan Qin1,2, Nengxiong Xu1,2
1China University of Geosciences Beijing, Beijing, People's Republic of China.
Royal Society open science
|August 7, 2025
概括
优化基于的接材料和压力可以增强破碎岩石质量的强化. 适当的混合比率和增加的负载/压力提高了岩石泥粘合和强度,减少了沿接口的故障.
科学领域:
- 地质技术工程 地质技术工程
- 材料科学 材料科学 材料科学
背景情况:
- 破碎的岩石质量在土木工程项目中构成重大挑战.
- 接是一种常见的方法来加强这些结构.
研究的目的:
- 调查材料比例,岩石质量分级,覆盖负载和接压力对基接增强材料有效性的影响.
- 为了确定最优的参数,在goafs. grouting处理.
主要方法:
- 进行了接增强试验.
- 分析了水与固体比率,固体相比率,水玻璃含量,粉碎分级,叠加负载和接压力的变化.
- 评估了强化岩石质量的机械性能和故障模式.
主要成果:
- 通过水与固体的比率为1:1.4-1:1.0,固体相比为3:7-5:5,以及3-5%的水玻璃含量,可以达到最佳的泥性能.
- 增强的接材料强度,降低的粉碎分级,增加的覆盖负载,增加的接压力导致接和岩石之间的机械性能差异减少.
- 失效模式表现出"岩石般"的特征,裂沿岩石-泥-岩石接口传播,并结固体.
- 即时应变和轴向爬行最初减少,然后随着分级负载而增加,而爬行速率在最初的快速下降后稳定下来.
结论:
- 该研究确定了在破碎岩石质中有效的基接的关键参数.
- 接增强材料的长期强度为2.1 MPa,占其瞬时强度的65-80%.
- 优化接条件显著提高了破碎岩层的机械完整性和稳定性.
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