Rock Mass Structure Measure And Application

Rock mass is composed of rock and divide the structure of the rock surface geologicbody. Rock mass structure is refers to the development degree of structure surface and itscombination relationship, or refers to the size, shape, structure and arrangement of space.Structure defined by cutting the rock structural surface; Structural plane is with very low or notensile strength of discontinuity, including all the geologic parting plane. Structural plane andstructural body is essential for the characterization of rock mass structure, and is also asufficient condition for [3], the internal development of the rock mass structural plane, only afew parts to rock outcrops or artificial excavation face (for example, the slope surface,underground chamber side wall) leakage, in areas such as the generally only these structuralplanes can also be directly observed, their number is limited. A large number of engineeringpractice and research shows that the rock mass structural plane is penetrative more structuralplane, its distribution is random.This article through to ZhenAn pumped-storage power station dam site area engineeringgeology investigation and study analysis, using the red plane projection method, has carriedon the grouping to joints and fissures in the study area and geometrical parameters of thestructure of each group including dip Angle, orientation, trace length and spacing of statisticalanalysis, the distribution form and the statistical characteristic of the geometric parameters,established the probability model of the structure, the use of Monte Carlo method on thesurface of the structure for the network simulation. In the study area adit PD3and PD4basedon field statistical measurement data, rock mass structural measure indicators: rock qualityindex Kv, RQD and rock mass integrity coefficient Kd structure line density, the relationshipbetween the structural plane distance d. Its research results to guide the engineering practice,further enrich the structure of rock mass test method and its application is of greatsignificance.