Abstract:

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.

Key words: water diversion, dynamic water grouting, grouting material, High strength, minimum inflation