Combined with practical work and based upon analysis of advanced water prospecting advanced pre-grouting reinforcement scheme is proposed;at the same time practical construction technology is elaborated from construction of sealing batholite,reinforcement range of curtain grouting,embedment of pipe,grouting construction process and other aspects.

Combined with the projects generate situation,it introduces the action of sealing batholite in curtain grouting,analyses the decided of the construction planning of sealing batholite,represents the injecting technology and construction techniques of sealing batholite.

Combined with Laohugou tunnel project and according to the different underground water yielding,it builds the different sealing batholite,finishes the water stopping by using purdah injecting,and stops the leakage of the underground water,and this supplies theoretical reference and practical experiences to further extend the technique.

The author presents the construction methods of surrounding rock grouting,blind ditch installing,sidewall foundation treatment,geotextile placing,waterproofing membrane placing,drainage material installing,water stop tie installing,secondary lining casting and backfilling grouting on basis of the actual conditions.

Study on the transfiguration and failure mechanism of gate-road surrounding rock in the bottom slicing;

Influence of mining velocity on mechanical characteristics of surrounding rock in fully mechanized top-coal caving face;

Design of bolt support for buttock base on surrounding rock classification method of pressure releasing zone;