Comparative experimental investigation of chemical grouting into a fracture with flowing and static water  

作　　者：Zhang Gailing Zhan Kaiyu Gao Yue Wang Wenxue 

机构地区：[1]State Key Laboratory of Geomechanics and Deep Underground Engineering. School o/Resources and Geosciences, China University of Mining ＆ Technology, Xuzhou 221008. China [2]Chongqing Design ＆ Research Institute, Sino Coal International Engineering Group, Chongqing 400016, China

出　　处：《Mining Science and Technology》2011年第2期201-205,共5页矿业科学技术（英文版）

基　　金：Financial support for this work,provided by the National Natural Science Foundation of China(Nos.40772192 and 41072237);the State Key Laboratort of Geomechanics and Deep Underground Engineering(No.SKLGDUEK0903);the Specialized Research Fund for the Doctoral Program of Higher Education of China(No.20100095110015)

摘　　要：We present a series of experimental tests on chemical grouting into a fracture with flowing and static water,using a transparent fracture grouting experimental device.Variations of seepage pressure and grout propagation were compared in our investigation.The results show that flowing water results in drops of seepage pressure,development of penetration radii in the upstream side and drops of propagation area during the same period,compared with grouting in static water.The propagation area in static water is always round before grouts reach the joint boundaries.However,the propagation shape changes from round to an elliptic shape for grouting into a fracture with flowing water.A theoretical model for the grout penetration radius in a fracture considering flowing velocity was developed and validated by our experimental results.These results are helpful in improving understanding of fracture grouting mechanism and in guiding engineering practices.我们在场进有流动和静电干扰的破裂的化学 grouting 上的一系列试验性的测试流水，用透明破裂 grouting 试验性的设备。渗出物压力和薄泥浆繁殖的变化在我们的调查被比较。流动的水导致的结果表演渗出物压力落下，在繁殖区域的在上游的方面和落下的穿入半径的开发在一样的时期期间，与静态的水里的 grouting 相比。在薄泥浆到达联合边界以前，静态的水里的繁殖区域总是是圆的。然而，繁殖形状与流动的水为 grouting 从回合变成到椭圆形的形状破裂。为在就流动速度而言的破裂的薄泥浆穿入半径的一个理论模型被我们的试验性的结果开发并且验证。这些结果在改进破裂 grouting 机制并且在指导的理解是有用的设计惯例。

关 键 词：Rock fracture Chemical grouting Flowing water grouting Static water grouting Scale model test 

分 类 号：TU471[建筑科学—结构工程] TV543.2[建筑科学—土工工程]