Study On 3D Visualization Evaluation Methods Of The Rock Mass Quality And Its Application

The rock mass quality evaluation which links up the reconnaissance of rock engineering, the design and the construction, received highly from the people working in domestic and foreign engineering geology. To make an accurate and reasonable quality evaluation of the rock mass, to make an judgment of the improvable rock body, and to reveal the basic mechanics characteristic of the rock mass, is the foundation of the rock mass stability evaluation and an important guarantee to instruct the design and the construction plan correctly. It is also a main basis of the project investment budget. It has the vital significance particularly in the rock mass quality evaluation of the big-scale work construction.Block Caving is a mining method in which ore is allowed to collapse due to its own weight in a controlled fashion into chutes. Caveability of rock body is the principal aspect of feasibility study of block caving methods. The factors influencing the mechanical response of a rock mass are: strength of the intact rock material, rock quality designation(RQD), spacing of the joints, condition of the joints, groundwater conditions, in-situ rock stress and other joint properties of ore body.Different methods and progress of the research of rock mass quality evaluation in domestic and foreign countries were first introduced in this paper. crag body quality appraisal. The characteristic, limitation and mutual relations of each evaluation method have also analyzed. After having determined the research method, a geological database had been established base upon the thorough analysis of engineering geological condition and every mechanics characteristic, and the statistical distributing law research has also been done. Afterwards, take the three dimensional geology full-scale mockup which was made by the mining industry project software SURPAC as an analysis object and combine the block model and the parameters to calculate each block's value using SURPAC. Based on this result concluded from the caveability graduation method, the work of graduation district of the rock body quality in the entire mining area has also been Carried on. Finally this paper used the project experience to draw the further conclusion and the suggestion to the result.The traditional methods for evaluate the caveability of the rock body are developed based on the stability analysis of rock failure in tunnels. And every method has the certain one-sidedness. This article's innovation lies in the computer formidable data-handling capacity application in the collapsing graduation research, making the management and use of the data more convenient. This article's innovation also lay in having determined the presumption method of various parameters, and studied the graduation district of the rock body quality using presumption of block section model parameter. Each kind of three dimensional visible model has been established using the computer technology regarding to the situations of the deposit. The three dimensional geology full-scale mockup has also been regionally evaluated. After synthesizing the above research results, this paper made an evaluation of the rock body quality and made the evaluation model. Finally this paper proposed the Block Caving caveability evaluation plan of ore-bearing rocks.