LAPSE:2023.35897
Published Article
LAPSE:2023.35897
Study on the Compressive and Tensile Properties of Gneiss Outcrop of Bozhong 196 Gas Field in China
Lianzhi Yang, Tong Niu, Fanmin He, Zhiyong Song
May 26, 2023
In this paper, based on the gneiss outcrop of Bozhong 196 gas field in China, uniaxial compression and Brazil splitting tests were conducted by using cores of different orientations. The following compression properties were studied: the elastic compression modulus, Poisson’s ratio and compressive strength of the gneiss outcrop. The following tensile properties were studied: the tensile modulus, the tensile strength and peak energy rate of gneiss outcrop. The results demonstrate the following: (1) The elastic compression modulus, compressive strength, tensile strength and peak energy rate of gneiss specimens with horizontal core-taking are greater than those with vertical core-taking. (2) The elastic compression modulus, Poisson’s ratio and compressive strength of horizontally cored gneiss specimens are 29.688−45.760 GPa, 0.186−0.386, and 174.94−147.80 MPa, respectively; the elastic compression modulus, Poisson’s ratio and compressive strength of the vertical gneiss specimens are 26.541−32.602 GPa, 0.429−0.476 and 169.37−134.46 MPa. (3) The tensile modulus of the horizontal gneiss specimens is 4.93−5.98 GPa. The tensile modulus of the vertical gneiss specimens is 0.96−2.11 GPa. The tensile modulus of the horizontal gneiss specimens is five times that of the vertical gneiss specimens. The elastic compression modulus of gneiss is 5−20 times that of the tensile modulus. (4) The tensile strength and peak energy rate of horizontally cored gneiss specimens are 14.33−17.55 MPa and 2598.67−4049.53 J/m2, respectively. The tensile strength of the vertical gneiss specimens is 6.12−9.65 MPa, and the peak energy rate is 715.74−1515.30 J/m2. (5) There is a good linear relationship between the peak energy rate and tensile strength of gneiss. The research results can provide a scientific and reasonable reference for in situ fracturing of Bozhong 196 gas field.
Keywords
Brazilian splitting, compressive strength, energy of fracture, tensile strength, uniaxial compression
Subject
Suggested Citation
Yang L, Niu T, He F, Song Z. Study on the Compressive and Tensile Properties of Gneiss Outcrop of Bozhong 196 Gas Field in China. (2023). LAPSE:2023.35897
Author Affiliations
Yang L: School of Civil and Resource Engineering, University of Science and Technology Beijing, Beijing 100083, China
Niu T: School of Civil and Resource Engineering, University of Science and Technology Beijing, Beijing 100083, China [ORCID]
He F: Chengdu Surveying Geotechnical Research Institute Co., Ltd. of MCC, Chengdu 610023, China
Song Z: School of Civil and Resource Engineering, University of Science and Technology Beijing, Beijing 100083, China
Journal Name
Energies
Volume
16
Issue
9
First Page
3919
Year
2023
Publication Date
2023-05-06
ISSN
1996-1073
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Original Submission
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PII: en16093919, Publication Type: Journal Article
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LAPSE:2023.35897
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https://doi.org/10.3390/en16093919
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May 26, 2023
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May 26, 2023
 
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