Different jacking speed is carried out on the model to further explore the deformation rules of the extra-shallow-underground-pipe jacking with short-radius curve at different jacking speed,and the recommended value of jacking speed is proposed.

The research on the application of smooth blasting in fast excavation;

Since carrying out the technology of"hydraulic tunneling",the rate descends evidently and the speed of excavation improves more than half a double and achieved the aim of safety fast excavation.

Supplementary measure and technical transform of equipment in quick tunneling;

This paper introduces the Geological conditions and surrounding environment of a certain city s shallow buried tunnel engineering, expounds the features and concrete measures of the quick tunneling construction technique, and points out that the meticulous organization and scientific management are the effective guarantees for realizing the quick tunneling of the urban tunnel.

Blasting rapid excavation technology for freezing thick gravel stratum of mine shaft;

Construction organization and management of the rapid excavation of the surrounding rock of Dawoshan tunnel entrance;

The depth of sealing hole is a very important factor in hydraulic screen;according to the condition of Sang Shu-ping coal mine,base the theoretically analyse and though the checkout,make sure the logical depth of sealing hole of hydraulic screen in Sang shu-ping coal mine,good effect was obtained,and carrying out rapid excavation.