Toppled rock body classification method

Abstract

The invention provides a toppled rock body classification method. The method comprises the steps of setting seven classification indexes for evaluating toppled rock bodies, wherein the classification indexes include a deformation feature, a rock stratum tilt angle, an inter-stratum maximum extensional amount, an inter-stratum unit extensional amount, an unloading deformation feature, a weathering degree and a longitudinal wave velocity; and according to comprehensive judgment of the classification indexes, classifying the toppled rock bodies into three types: an A-type extremely strong toppled cracking region, a B-type strong toppled cracking region and a C-type weak toppled transitional deformation region. According to the method, the classification indexes can pointedly describe basic deformation cracking features of the toppled rock bodies; the field workload is small; and in the aspect of evaluating the stability of the toppled deformed rock bodies, the effect of getting twofold results with half the effort can be achieved due to high pertinence.

Description

technical field [0001] The present invention relates to rock mass classification. Background technique [0002] After the brittle rock layer is toppled and deformed, the rock mass is broken. According to the general classification scheme of rock mass structure, it is difficult to describe the degree of toppling deformation. In the prior art, the rock mass structure classification scheme or the rock mass quality classification method is usually used to evaluate the rock mass toppling deformation, wherein, the classification indicators of the rock mass structure classification method are: 1. Geological background (lithology, tectonic movement, rock layer thickness) 2 .Structural surface characteristics (structural surface length, structural surface group number, structural surface filling, structural surface cementation degree) 3. Structure shape (giant block, thick plate, block, column, plate, rock block) , the classification results are: 1. Overall massive structure 2. Laye...

AI Technical Summary

Problems solved by technology

[0002] After the brittle rock layer is toppled and deformed, the rock mass is broken. According to the general rock mass structure classification scheme, it is difficult to describe the degree of toppling deformation

In the prior art, the rock mass structure classification scheme or the rock mass quality classification method is usually used to evaluate the rock mass toppling deformation, wherein, the classification indicators of the rock mass structure classification method are: 1. Geological background (lithology, tectonic movement, rock layer thickness) 2 .Structural surface characteristics (structural surface length, structural surface group number, structural surface filling, structural surface cementation degree) 3. Structure shape (giant block, thick plate, block, column, plate, rock block) , the classification results are: 1. Overall massive structure 2. Layered structure 3. Fragmented structure 4. Discrete structure. The technical defects of this classification method are: 1. The four classification results cannot quantitatively describe the toppled rock mass Basic rupture characteristics, 2. It is difficult to describe the degree of deformation of the dumped rock mass, 3. There are many indicators involved, and the workload in the field is large, 4. The failure mode of the dumped rock mass is special, and the existing technology has low accuracy in slope stability evaluation

The technical defects of this classification method are: 1. It is impossible to quantitatively describe the basic fracture characteristics of the dumped rock mass; 2. It is difficult to describe the deformation degree of the dumped rock mass; 3. The calculation method is complicated and inconvenient to use in the field; 4. The dumped rock mass is damaged The mode is special, and the technology is less pertinent to the dumped rock mass

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