The research of the innovation team is base on rockmechanics theory, the background of engineering application of object-oriented,and the main line of rock mechanics and all kinds of underground engineeringproblem about mine, traffic, water & electricity construction. Theinnovation team mainly research on rock mechanics characteristics, undergroundpressure control theory, soft rock supporting, grouting theory &construction technology, geological disaster prevention, slope engineering, thesecond mining technology research, and so on through the combination of theoryand practice. The team with 3 professors, 5 associate professors, more than 40master & doctoral candidates has a solid scientific research ability sinceit commits to 70 science & technology projects both inside and outside theprovince, awarded the first, second, third prizes from Provincial Science and Technologyare 3 items, 2 items, 10 items respectively. There are over 50 high-level paperswere published, and obtained good research results.
Research directions and findings:
(1) Rock mechanicscharacteristics research：Based on rock acoustic characteristics in differentstress state, it is concluded the law of instability & failure of engineeringrock mass through the combination of block theory and rock acoustic emissioncharacteristics, which opens an effective way to predict roof-fall &spalling of mine. And combined with the analysis of rock mass structure, Caesareffect and acoustic emission monitoring technology, the research enriches andimproves the means of the rock mechanics characteristics, in which the implementationswere successful in such mines as Yunnanprovince, Guangxi province. In addition, the influence of the rock tensiledeformation characteristics is further studied, through which it is found that thedeformation under the condition of the tensile is plastic deformation based on somerocks that the elastic modulus of tension is far less than the elastic modulus ofcompressibility. And the “double elastic” constitutivemodel quoted by some researchers does not apply to rock. What is more, the teamcarries out a lot of fruitful researches in the constitutive model of rockdamage, the shear characteristics of rock mass structure surface, the largedeformation of soft rock, the interaction mechanism of water & rock (soil),the mechanism of granite expansion deformation and so on.
With the increase of mining depth, the mechanicalcharacteristics of the rock under high temperature and high pressure, the mechanismof rock burst and the water damage effect of rock will be the focus of futureresearch.
(2) The researchof the second mining and underground pressure control theory：Mining is ahigh-risk industry, especially under the action of the second stress inunderground mining, mine underground pressure often caused by mining roofcaving and destruction appears prominent, which poses a serious health threatto the safety production of mine and the lives of the workers. In the aspect ofunderground pressure control, some researches become what the theory of mine undergroundpressure control mainly concerned with, e.g., the engineering properties ofrock mass & rock mass structure, the exposing area of goaf, the reasonablestoping sequence, the supporting measures & method, calculation model andmethod, the equipment of underground pressure monitoring, etc.. Besides, inorder to recover mineral resources as far as possible, based on the largeresidual pillars, residual ores and diluted ores after the first mining, theteam carries out the research of the second mining technology through the combinationof the technology of pressure control, grouting, tunnel excavation, supporting,goaf treatment and so on. At present, the related research projects has beenfinished over 10 items and achieved good results, which contributes to themining orderly and effectively.
(3) Theresearch of slope disasters and failure mechanism：The slopedisasters have become a bottleneck restricting the development of nationaleconomy in the Southwestern regions. The research mainly is composed of the mechanismof slope instability, the evaluation methods of slope stability, the measures ofslope reinforcement, the properties of slope geotechnical engineering, the couplingof rock（soil）and water, the monitoring of slope instability, the economicimpact analysis of slope disaster, etc.. In the last few years of putting intopractice, the team has undertaken extensive exploration and research on mineslope, roads slope, building ramps, etc., and abtained good research results,significant social and economic benefits, saved the cost of nearly 100 millionyuan of slope treatment for the enterprises.
According to the actual development of open-pit mine, thegeological model of the gradient of rock-soil, the response of slope dynamic, thecoupling mechanism of water-rock, the mechanism of slope instability under the combinationof open-pit and underground mining, and so on will be the focus of research direction.
(4) The groutingtheory research of complex rock mass：The research direction effectively tackles some technologyproblems like the pillar stoping under the falling loose orebody, the mining ofrefractory orebody, the drivage of soft rock, which has become one of theobject studied by the creative team. The technology put forward by the team,such as the artificial pillar formed by grouting in the falling dispersionorebody, the grouting reinforcement of dump, etc., has been promoted andapplicated in a number of mines.