The general karst development law in the central Hunan is introduced.

0 using GIS technology for comporting karst development law intuitively.

In order to study the overburden strata failure law and water conducted fracture zone development law under the condition of the fully mechanized top coal caving mining in Lu \'an Mining Area,three high level survey boreholes in the roof caving zone and the water conducted fracture zone were made in the 6206 fully mechanized top coal caving mining face in Wangzhuang Mine.

This paper analyzes on the developing regularity of the small and medium-sized faults in the coal seam of Huozhou mine area and the factors influencing their development,and simulates the developing regularity of the small and medium-sized faults by using the numerical simulation.

This paper researches and analyses on the developing situation of underground faults of Wangcun Mine and its formation principle, sums up the features of fractural structure of Wangcun Mine and its developing regularity, which can be used to guide the production and safety.

The major types and developing regularity of rock and soil engineering disasters are summarized,at the same time some prediction methods and prevention measures are proposed.

In this paper, the geologic genesis and developing law in Xi an region are discussed, the disposal measure of controlling the developing speed of ground fissure being proposed.

Through induction and summing up of the data from comprehensive exploration in the Beiyangzhuang minefield,discussed fold and fault development regularity,distribution features and genetic mechanism in the minefield.

Through the analysis on development regularity of twelve karst collapse pillars in Fangezhuang Coal Mine,the prevention and resolution of covered water-diversion collapse pillar are introduced.

In the engineering background of old goaf water hazard control in the third coal mine of Yangquan,through numerical simulation,using horizontal deformation as criterion,study on the lateral boundary of roof water flowing fracture development regularity.

Discussion on formation and development regularity of karst collapse pillar at Gequan Coal Mine;

Comparatively Study on the Development of Digestive Organs in Lushi Chickens between in Battery and Reared on Floor

In order to understand body weight and size development,32(16♀+16♂)and 45(25♀+20♂)Changchun closed colony Japanese white rabbits were used to research various growth indexes,including live body weight and live body length,ear length and ear width systematically.