Abstract：A series of simulation experiments is based on in laboratory to research on the setting time,fluidity,groutability and early strength of ultra-fine cement,as well as the strength of fractured cementing coal and shear bond strength between pure grout concretion and cementing coal. Ultra-fine cement materials with high early strength performance and setting time adjustable were obtained. The experimental products were applied to reinforcement of stopping tunnel for deep thick coal seam in Anyang Zhujiao colliery. It was effective on the control of tunnel deformation,improvement of tunnel support system stability and reduction of tunnel repair rate. This research is significant technological economic benefit,and provides further researchers with valuable experience on supporting technics for stopping tunnel of deep soft coal seam.

Keyword：ultra-fine cement;performance test;grouting reinforcement;hollow grouting bolt with high strength;