10th Asian Regional Conference of IAEG (2015)

Keynote speaker Topic 3
Professor Faquan Wu
ProfileInstitute of Geology and Geophysics, Chinese Academyof Sciences, Beijing 100029
E-mail: wufaquan@mail.iggcas.ac.cn
Date of Birth: 30 September, 1955
Nationality: ChineseTitles
2011-present: Secretary General of IAEG
2007-2010: Vice-president of IAEG in Asia
Director of IAEG China National Group.
Vice president and Secretary General of Engineering Geology
Commission, China Geology Society.
Vice president and secretary-general for Chinese Society of RockMechanics and Engineering, 2008-2012
Position Held
1995-present: Research professor, 1995-2011: deputy director and director of Key Laboratory ofEngineering Geomechanics, Institute of Geology and Geophysics, Chinese Academy of Sciences
Research Interests
Rock engineering geology.
Engineering geomechanics and statistical mechanics of rock mass.
Stochastic structure model of rock mass.
Failure probability and strength theory of rock mass.
Stability analysis and dynamic theory of high rock slopes.
Deformation control of tunnels.
Education
Ph.D., Engineering Geology, Institute of Geology and Geophysics, Chinese Academy of Sciences,
1992
M.S., Hydrogeology and Engineering Geology, China University of Geosciences, Wuhan, 1985
B.S., Hydrogeology and Engineering Geology, China University of Geosciences, Wuhan, 1982
Abstract

A positive reinforcement method for rock slope
From the viewpoint of mechanism, the approaches of slope reinforcement can be classified into twocategories, the passive and the positive reinforcement. Essentially, the positive reinforcement is a protection
system which relies on the synergistic action of rock mass and engineering structures to fully develop theself-bearing capacity.
Take the slope reinforcement as example, the current concept is to control the behavior of disaster using
artificial structure, which can be called passive reinforcement theory. It concentrates more on the negative
effect of geological disasters caused by deformation and destruction of slope, but ignored the positive
function of the self-bearing capacity of slope rock. Therefore, the passive reinforcement is usuallyrelatively conservative, and thus the cost is larger.
The current procedure of slope reinforcement design is: predict the shape and position of the potential
sliding surface through field investigation, and then calculate the sliding force along the assumed surface;decide the controlling points according to the distribution of sliding force along the surface, and then, thesupport or anchoring system can be designed. Obviously, such design doesn’t fully consider and make useof the self-bearing capacity of slope rock. In order to minimize the risk, as many anchor bolts or piles as
possible will be set to control the break of slope.
Generally speaking, positive reinforcement of rock engineering is a subject in exploration. The paper is toinitiate the terms of potentiality of slope self-stability and positive reinforcement, propose the method forlocating of anchor bolts/cables and determination of force and depth of anchorage. The calculation in themethod is done with the software Flac3D by Itasca Co. Ltd and developed modules.