高强度微膨胀新型注浆材料动水注浆技术研究及应用

基于王行庄煤矿突水现状,分析突水原因,应用探水钻超前探测断层位置,并对动水压力进行测定,采用高强度微膨胀新型注浆材料进行注浆堵水,通过堵水率及钻孔取芯检测注浆效果,结果表明:断层为含水层L1-4导水带,动水压力达到1.3MPa,使用高强度微膨胀注浆材料进行动水注浆,堵水率达到100%。通过钻孔取芯发现注浆材料粘结性较好,岩芯单轴抗压强度达到40MPa,该材料能够很好的适应动压注浆施工,阻断断层导水带,保证了开切眼安全施工。

High Strength Micro Expansion of New Grouting Materials Flowing Water Grouting Technology Research and Application

In the study of geological conditions on the basis of the analysis Wang Hang village coal mine water inrush reason. The dynamic water pressure are measured by used ground water getting advanced detection fault location.The use of high-strength micro-expansive new grouting material for grouting and plugging water to detect the grouted effect by the water shut-off rate and coring. Through the field construction indicated that the fault is mediated water zone of the aquifer L1-4 with hydrodynamic pressure reaches 1.3MPa;To use the high-strength micro-expansive grouting material for hydrodynamic grouting, the water control rate is 100%;It is obvious that the grouting materials combined well with rock stratas, good cohesiveness , and core uniaxial compressive strength of 40MPa.The results show that, this material is very good to adapt to the dynamic pressure grouting construction,dynamic pressure water injection well block fault line and ensure that the safety of the roadway drivage.