The roles of drilling technicians in geological engineering exploration are briefly stated.

It discussed karst growth rule in Zhengzhou,destroy depth disturb mining,slip-casting and the problem of drilling technique.

The wirelinecore drilling technique can be utilized to achieve such technical and economical effect as top quality,high efficien-cy and low consurnption when geological exploration holes go more and more deep,coring becomes more andmore difficult and the drilling site is more and more remote.

The present situation of international drilling market and the development of solid mineral drilling techniques are sized up.

Progresses of application research on drilling technology to loose rock formation and principal achievements;

It is emphasized that the role of high efficiency geology core drilling technology in the plan is not replaceable.

In this paper the development history of drilling technology and drilling rigs is summarized firstly,and then some problems existing currently in the railway drilling are analyzed.

Based on the specialities of the works of the railway survey and design departments,we should establish and amplify the environment suitable for the growth of fhe youth in technical staff and the corresponding encouragement systems.

Nowadays, technical staff has played more and more important in enterprises, and they are the main force in the technique creation.