What Is a Geotechnical Laboratory?

The Geotechnical Engineering Open Research Laboratory of the Ministry of Land and Resources is a ministerial-level professional research laboratory that is open to domestic and foreign countries and is engaged in the research of geotechnical engineering and geotechnical theory and technical methods. The laboratory is affiliated to the Ministry of Land and Resources and is based on Chang'an University. The relying unit has the right to grant master's degree in geotechnical engineering and geological engineering and doctoral degree in geological engineering. At present, there are more than 20 young and middle-aged researchers and 10 specialized experimenters.

Geotechnical Engineering Open Research Laboratory, Ministry of Land and Resources

His research interests include: stability of engineering areas and major engineering environmental effects; evaluation, prediction, and prevention of geological hazards; engineering characteristics and stability evaluation of special geotechnical bodies; physical simulation and numerical analysis of geotechnical engineering; complex engineering geology Detection, monitoring technology and geotechnical engineering information technology; technical and economic evaluation, management and decision-making of geotechnical engineering. The laboratory has 6 engineering properties of soil and the interaction between soil and structure, engineering geological properties of rock mass and new technologies of rock mass engineering, environmental geotechnical engineering, geotechnical hydraulics, numerical and physical simulation of geotechnical engineering, etc. Research laboratory and rock mechanics and materials laboratory, rock triaxial laboratory, soil analysis and soil mechanics laboratory, soil triaxial rheology laboratory, soil triaxial laboratory, engineering testing and geotechnical in-situ test field, physics 7 laboratories including simulation laboratories.

The Geotechnical Engineering Open Research Laboratory of the Ministry of Land and Resources is a ministerial-level professional research laboratory that is open to domestic and foreign countries and is engaged in the research of geotechnical engineering and geotechnical theory and technical methods. The laboratory is affiliated to the Ministry of Land and Resources

The laboratory has been actively open to the outside world, and has already sponsored more than 20 research projects of experts and scholars from more than 10 well-known domestic institutes, institutes, and institutes. The first and second batch of research projects funded have been completed, which has had a certain impact in China. The laboratory is actively open to the outside world, exchanges, and cooperative research, and has made a number of important academic achievements in the research of Sino-Japanese and Sino-Japanese international cooperation projects. Laboratory researchers have published more than 100 academic papers and 5 monographs in domestic and foreign journals. At present, there are more than 20 young and middle-aged researchers and 10 specialized experimenters.

After years of research accumulation, the laboratory has formed the following distinctive research directions:

I. Project area stability and major engineering environmental effects

It mainly studies the environmental evolution of the Qinghai-Tibet Plateau uplift, the environmental change of the Loess Plateau and its disaster effects; the environmental effects of major projects in the Yellow River Basin and the northwestern region; The system, content and theoretical framework apply the latest research results of other disciplines to the study of regional stability and promote the development of this field. And apply it to the study of the environmental effects of major projects, evaluate the suitability of major projects in the western active tectonic zone, the safety of the earthquake, and the seismic resistance of the project, and at the same time make it feed back to the study of theoretical methods.

In the past two years, the following research work has been carried out:

Regional stability dynamics of the northeastern margin of the Tibetan Plateau;

Environmental evolution and disaster process dynamics of the Tibetan Plateau uplift;

Environmental changes and disaster effects on the Loess Plateau;

Suitability evaluation of major projects in the western active structural area;

Major engineering earthquake safety and engineering earthquake resistance.

National Natural Science Foundation

Evaluation, prediction and prevention of geological hazards

Mainly study the engineering geological environment quality assessment methods and geological environmental protection, establish a coordinated and sustainable development of man-land relationship, and establish a major engineering geological disaster risk assessment method system. Study the environmental conditions, formation mechanism, and development rules of geological hazards, so as to carry out quantitative evaluation, prediction, forecasting, and optimal design of prevention and treatment of geological hazards, and establish a complete geological hazard early warning system.

The main research activities in the following areas are:

Geological diseases and prevention of lifeline engineering in Northwest China;

Evaluation and prevention of engineering diseases in the Loess Plateau;

Research on Geological Hazards of Western Highways;

Geological hazard assessment, prediction, forecasting and early warning system;

Geological disaster management technology.

3. Evaluation of engineering characteristics and stability of special rock and soil mass

Taking the special geotechnical soils in the Northwest China as research objects (such as loess, expansive soil, saline soil, desert soil, frozen soil, etc.), study its engineering characteristics and disaster effects, propose reasonable treatment measures, and study special geotechnical soils. Testing technology and improvement methods. Due to its special tectonic environment, a large number of broken rock masses have been formed in the Northwest China, such as weathered rocks, fault fracture zones, highly metamorphic phytochemical rock masses, and loose rock masses. For this type of rock mass, the structure, strength, deformation, permeability, damage criteria, rock mass type, and disease management are mainly studied. The stability and stability of rock masses such as slopes and chambers formed by this type of rock mass are further studied. Reinforcement technology.

Research will be carried out in the following areas:

Engineering characteristics of special soils in Northwest China;

Improvement and reinforcement technology of special rock and soil;

Prevention of special rocky soil disasters;

Strength theory and stability evaluation of broken rock masses;

Water-rock (soil) interaction and engineering stability.

4. Physical simulation and numerical analysis of geotechnical engineering

Focus on the research of constitutive theory in rock and soil mechanics, damage and fracture theory of rock and soil, and theoretical research based on meso-analysis of deformation, damage, localization and failure and instability of rock and soil. Nonlinear and large deformation and dynamic numerical simulation, reliability analysis and optimization design of geotechnical engineering, numerical simulation of geotechnical engineering construction.

Research will be carried out in the following areas:

Geotechnical model and simulation experiment;

Geotechnical constitutive theory;

Mechanical simulation analysis during geotechnical engineering construction;

Geotechnical application software and CAI system development.

V. Detection and monitoring technology of complex engineering geological bodies and geotechnical engineering information technology

It mainly studies the fine detection methods of engineering geological bodies, the measurement and monitoring technology of geological body deformation, stress and strain, and the integration technology of geological information.

Research will be carried out in the following areas:

Fine detection and monitoring technology for complex engineering geological bodies;

Monitoring and measurement technology for slope engineering and underground engineering;

"3S" (GPS, GIS, RS) integration technology for geoscience information.

Technical and Economic Evaluation, Management and Decision of Geotechnical Engineering

Using the principles of modern economics and the theory of technology and economy, research methods of geotechnical engineering investment budget, engineering cost management, and engineering economic evaluation are provided to provide a basis for the decision-making of major geotechnical engineering technical solutions.

Research will be carried out in the following areas:

Geotechnical engineering budget system;

Geotechnical engineering cost management;

Economic evaluation of geotechnical engineering;

Evaluation and measurement of economic effects of construction technology progress.

The laboratory currently has more than 100 sets (sets) of various geotechnical test equipment, and has multiple sets of advanced automatic acquisition systems for geotechnical test data, which can perform static and dynamic triaxial tests of various soils and triaxial tests of rocks. The laboratory has large-scale linear and nonlinear and dynamic numerical analysis software such as Patran, Marc, Nastran, 2D-, 3D-, 2D discrete element 2DEC, 3D discrete element 3DEC, and 3D visualization of civil engineering. The Geotechnical Open Research Laboratory will, under the guidance of the principle of "openness, mobility, unity, and competition", seize the opportunity of western development, more actively participate in major national scientific research and production projects, and strengthen basic geotechnical and geotechnical engineering theories Research and applied technology research, extensive academic exchanges and cooperation at home and abroad, to promote the development of geotechnical engineering disciplines and geotechnical engineering disciplines and the economy of the Northwest region, and strive to build laboratories into scientific research and advanced research in the field of geotechnical engineering in the short term. An important base for talent training at different levels. ^[1]