Research On The Prediction Of Rock Mass Mechanics Characteristics Based On The Rotary Penetration Technology

In rockmass engineering,how to determine quickly and reliably mechanical parameters of rock mass as the key research subject for geotechnical engineering is always the research emphasis.Based on this research objective,rotary cutting penetration technology tries to bring new idea and method for quick getting mechanical parameters of rock mass.Based on new rotary cutting penetration,the theoretical relationship between rock mechanical parameters and cutting strength characteristics with operation parameters and response parameters have been studied.Deeply analyzing the fragmentation mechanism of diamond core bit drilling rockmass,we put forward the broken rock conditions and rules of rotary drilling of diamond core bit in the process of rotary drilling.The interference test of drilling parameters of XCY-1 is implemented,as well as two kinds of control mode,load control and drilling rate control implemented has noninterference.Rock level recognition model,mechanical parameters of rock mass prediction model and the surface of structure identification model are established,and based on standard for engineering classification of rock mass,the fast intelligent integration system is developed based on rotary penetration technology.Information technology,automation and intelligent is developed to predict the intelligent method for mechanical parameters of rock mass.The main contents and innovation points are as follows:(1)The relationship between rock mechanical parameters with operation parameters and response parameters of rotary cutting penetration test have been revealed after the process of rock indentation and cutting has been dissected.Based on two aspects of the mechanical balance and energy conversion,the theoretical models of elastic modulus and compressive strength and internal friction angle and coheision have been proposed.Then the test results show that theoretical results have engineering application value.(2)Combined with rotary cutting penetration test results and related data,rotary cutting fracture zone had been defined,also,the cutting strength index and cutting strength have been put forward.The evolution models of bit pressure and torque have been established.Beginning from the influence laws between operation parameters and response parameters of rotary cutting penetration test,the relationships between cutting thickness and ration with feed force and cutting force have been obtained,also the relationships between rock cutting strength property and response parameters of rotary cutting penetration test.We put forward the broken rock conditions and rules of rotary drilling of diamond core bit in the process of rotary drilling.(3)The interference test of drilling parameters of XCY-1 is implemented,as well as two kinds of control mode,load control and drilling rate control implemented has noninterference.(4)Based on standard for engineering classification of rock mass,rock level intelligent identification module,basic mechanical parameters of rock mass intelligent recognition module,structural plane of rock mass intelligent recognition module and rock mass quality classification recognition module are developed.A rapid intelligent integration system of rotary cutting penetration technology has been developed based on rotary penetration technology.(5)The XCY-1 rotary cutting penetration technology that has been verified after entering SanHeKou water conservancy hub and QinLing water conveyance tunnel for testing in YinHanJiWei engineering,and application of the scene has a good prospect of engineering application.