The Study On The Mechanism And Experiment Of Zonal Disintegration Of Rocks

The phenomenon of zonal disintegration is a special technical problem which comes with deep mass.Making an exhaustive study on it have an impotant meaning in theory and useful value in engineering.The text is in allusion to the mine of china will enter deep mining ,theoretical analysising mechanism, time-dependent effect,parametre etc. of zonal disintegration. And experimental studying on natural rock simulating the phenomenon of zonal disintegration. The result of theoretical analysising indicate that splitting failure at the support pressure zone is the necessary condition of zonal disintegration formation, the zonal disintegration of rock is related not only to depth but also to rock mechanical parameter. Zonal disintegration create by way of creep,and the time that the rock is from creep to unstability isn't too long. Experimental study find high confining pressure would be the precondition of orbiting crack appear. Electrometric method can be used in zonal disintegration of rock simulation experiment if the the crack position can be known first. The study in this text has the basic effect on exhaustive studying the phenomenon of zonal disintegration and has the theoretical guiding significance in the engineering.