Taking safe construction of the main haulage roadway drilling crossing a 435-m fall and 140-m wide fault zone as engineering background,a study of engineering geological guarantee and construction controlling technique of roadway are performed.

The coal mine seismic data management system is a set of geological guarantee software developed to meet the need of coal mine actual production.

However,today s land protection is facing some contradictions,which are between the functions of the land protection and the productive elements,between the main form of land as social security and the weakening of land protection function,between the function of social security and the readjustment of the national economy.

To suit this situation,the reasonable selection is to combine the provide for the aged in household,land guarantee with social endowment insurance.

This paper mainly explained the significance of the land guarantee and re-understood our land system and its reform.

As a replacement of social security system,farmland security emerges as the time requires in this condition that country severity lack of social security.

the security system of land as land security does not equal social security,and explores the significance of establishing a sound social security system in bu.

In spite of the faintness, traditional family and land security will still play an important assistant role.