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Study on uniaxial compressive strength of double matrix bimrocks considering different block proportions
https://orcid.org/0000-0003-4759-2595
https://orcid.org/0000-0002-6850-1114
Abstract Bimrocks are a kind of complex geological body composed of a matrix and rock block. There are significant differences in matrix strength within bimrocks induced by geological tectonics, weathering, and so on. In this study, double matrix bimrocks are defined as that there are two matrices in bimrocks. The artificial bimrocks containing 4 kinds of matrix strength differences were fabricated, and the type of artificial bimrocks belongs to strong matrix weak rock block. The strength and failure characteristics of double matrix bimrocks were studied by indoor uniaxial compression tests. The results show that the difference in cohesion between the two matrices under different block proportions has significant effects on the uniaxial compressive strength (UCS) of the double matrix bimrocks. When the block proportion is less than 30%, the UCS of double matrix bimrocks with the small difference of matrix cohesion is lower than that of each single matrix bimrocks. As the difference of matrix cohesion increases, the UCS of double matrix bimrocks is between those of single matrix bimrocks with each matrix strength. When the block proportion is 50%, the UCS of the double matrix bimrocks is close to that of the single matrix bimrocks with stronger matrix. The difference of matrix cohesion has little effect on the UCS of the double matrix bimrocks when the block proportion range is 70 ~ 90%. In terms of failure characteristics, the failure modes of double matrix bimrocks are mainly summarized as penetrating failure, extended failure, and semi-penetrating failure.
Study on uniaxial compressive strength of double matrix bimrocks considering different block proportions
https://orcid.org/0000-0003-4759-2595
https://orcid.org/0000-0002-6850-1114
Abstract Bimrocks are a kind of complex geological body composed of a matrix and rock block. There are significant differences in matrix strength within bimrocks induced by geological tectonics, weathering, and so on. In this study, double matrix bimrocks are defined as that there are two matrices in bimrocks. The artificial bimrocks containing 4 kinds of matrix strength differences were fabricated, and the type of artificial bimrocks belongs to strong matrix weak rock block. The strength and failure characteristics of double matrix bimrocks were studied by indoor uniaxial compression tests. The results show that the difference in cohesion between the two matrices under different block proportions has significant effects on the uniaxial compressive strength (UCS) of the double matrix bimrocks. When the block proportion is less than 30%, the UCS of double matrix bimrocks with the small difference of matrix cohesion is lower than that of each single matrix bimrocks. As the difference of matrix cohesion increases, the UCS of double matrix bimrocks is between those of single matrix bimrocks with each matrix strength. When the block proportion is 50%, the UCS of the double matrix bimrocks is close to that of the single matrix bimrocks with stronger matrix. The difference of matrix cohesion has little effect on the UCS of the double matrix bimrocks when the block proportion range is 70 ~ 90%. In terms of failure characteristics, the failure modes of double matrix bimrocks are mainly summarized as penetrating failure, extended failure, and semi-penetrating failure.
Study on uniaxial compressive strength of double matrix bimrocks considering different block proportions
https://orcid.org/0000-0003-4759-2595
https://orcid.org/0000-0002-6850-1114
Abstract Bimrocks are a kind of complex geological body composed of a matrix and rock block. There are significant differences in matrix strength within bimrocks induced by geological tectonics, weathering, and so on. In this study, double matrix bimrocks are defined as that there are two matrices in bimrocks. The artificial bimrocks containing 4 kinds of matrix strength differences were fabricated, and the type of artificial bimrocks belongs to strong matrix weak rock block. The strength and failure characteristics of double matrix bimrocks were studied by indoor uniaxial compression tests. The results show that the difference in cohesion between the two matrices under different block proportions has significant effects on the uniaxial compressive strength (UCS) of the double matrix bimrocks. When the block proportion is less than 30%, the UCS of double matrix bimrocks with the small difference of matrix cohesion is lower than that of each single matrix bimrocks. As the difference of matrix cohesion increases, the UCS of double matrix bimrocks is between those of single matrix bimrocks with each matrix strength. When the block proportion is 50%, the UCS of the double matrix bimrocks is close to that of the single matrix bimrocks with stronger matrix. The difference of matrix cohesion has little effect on the UCS of the double matrix bimrocks when the block proportion range is 70 ~ 90%. In terms of failure characteristics, the failure modes of double matrix bimrocks are mainly summarized as penetrating failure, extended failure, and semi-penetrating failure.
Study on uniaxial compressive strength of double matrix bimrocks considering different block proportions
Li, Kai (author) / Sun, Shaorui (author) / Le, Huilin (author) / Wei, Jihong (author) / Hu, Yanran (author)
2023
Article (Journal)
Electronic Resource
English
BKL:
56.00$jBauwesen: Allgemeines
/
38.58
Geomechanik
/
38.58$jGeomechanik
/
56.20
Ingenieurgeologie, Bodenmechanik
/
56.00
Bauwesen: Allgemeines
/
56.20$jIngenieurgeologie$jBodenmechanik
RVK:
ELIB18
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