This paper introduces the structural characters and functions of the rock high pressure true triaxial machine newly developed and some research results with this machine. By the rock high pressure true triaxial machine, three principal stresses can be controlled and changed independently, so that any stress state and stress path in engineering rock mass and earth’s crust can be simulated. It is an important development of Karman type general triaxial machine. By RT3 type rock high pressure true triaxial machine, the maximum principal stress can be applied up to 800 MPa, the intermediate and minimum principal stress up to 200 MPa. The strains and parameters of sonic wave in the directions of three principal stresses can also be determined. The machine is used well for studying the basic theory on rock mechanics, the stability of engineering rock mass and the behaviors of earthquake precursors.

Simple shearing creep carried for a long time (494 day) indicates that the consolidation pressure affects the deformation and failure of clay soil heavily. So in the calculation of data, we must take the consolidation pressure into consideration. Furthermore, there is a time scale effect in the creep tests. In the laboratory, we carried out the balance shearing tests with strain-controlled simple shearing apparatus designed by myself, the test results are compared.

Shearing mechanical behaviors of composite joints model with consist of two kinds of different characters of joints and various inter-appearances in one plane have been studied in this paper. After a series of experiments on brittle-brittle, brittle-plastic, plastic-plastic type composite joint models, follow conclusions have been gotten. The shearing strength of composite joints has a relation not only with the area of sub-joints, but also with the times of inter-appearances of two sub-joints(K); and the shearing strength of composite joints has a relation with the shearing direction, that is to say, the shearing deformation-failure of composite joints is gradual. These conclusions are very important and useful for practical engineering.

This paper describes the studies of the petrology, the mineralogy and the microstructure of the rock formation in the mine area with electronic-microscope, optical-microscope, χ-ray diffractometer and spectrometer etc.. Finally, the microscopic mechanism of slope sliding baby are approached.

The problem of periodic array of cracks in 3-D space under shear loading which is interested in rock fracture mechanics has been investigated. The singular integral equation for the unknown crack opening displacement is derived. Numerical calculation has been taken for rectangular crack and the distribution of stress intensity factors along the crack edge has been obtained.

In this paper, the motion of the material points on the pile head is discussed, and based on this, several common waveforms are analyzed. At last, the approach of auto-identification waveform is discussed briefly.

The factor, which micro-strain transfers macro-strain, is inserted on the basis of Gerson constitutive theory. We deduced the damage constitutive theory, established the damage model and wrote out the iterative procedure. The theorical results are fit for experiment’s.

In this paper, the failure of model with different cracks is described. The test results of crack propagation is analyzed under uniaxial dynamic loading and static loading, and the similarities of the failure law followed by both and their differences are given.

This paper describes that setting up the steel sheets or slit cylinder etc. as the guide apparatus in bore holes can play the roles of controlling direction of cut-plane, of preventing internal wound of rock and increasing the distance between two neighbor bore holes when building stone is dug with non-explosive demolishing agent.