Infiltration of rainwater into a tension crack and its impact on the stability of unsupported vertical trenches in unsaturated soils
| dc.contributor.advisor | Oh, Won Taek | |
| dc.contributor.author | Mayadunna, B. B. | |
| dc.date.accessioned | 2024-09-25T18:51:39Z | |
| dc.date.available | 2024-09-25T18:51:39Z | |
| dc.date.issued | 2024-08 | |
| dc.description.abstract | The development of a tension crack behind the crest of an unsupported trench creates a path for infiltration of rainwater. This phenomenon accelerates the failure of an unsupported trench reducing the soil's shear strength due to decreased matric suction. A series of numerical analyses were carried out using SLOPE/W and SEEP/W software to investigate the influence of hydraulic conductivity function of tension crack on the stand-up time of unsupported vertical trenches, considering groundwater table levels (1m, 3m and 5m) and rainfall intensities (0.11, 0.36, 1.08, 3.60 and 10.8 mm/hr). It was assumed that the trenches were excavated into Indian Head till. Seepage through a tension crack was simulated by using four different approaches available in the literature. Two case studies that used to validate the research approaches demonstrated that the stability of a UVT with a tension crack during a rainfall event can be assessed by simulating the tension crack as a void space. | |
| dc.description.copyright | © B. B. Mayadunna, 2024 | |
| dc.format.extent | xv, 112 | |
| dc.format.medium | electronic | |
| dc.identifier.uri | https://unbscholar.lib.unb.ca/handle/1882/38118 | |
| dc.language.iso | en | |
| dc.publisher | University of New Brunswick | |
| dc.rights | http://purl.org/coar/access_right/c_abf2 | |
| dc.subject.discipline | Civil Engineering | |
| dc.title | Infiltration of rainwater into a tension crack and its impact on the stability of unsupported vertical trenches in unsaturated soils | |
| dc.type | master thesis | |
| oaire.license.condition | other | |
| thesis.degree.discipline | Civil Engineering | |
| thesis.degree.grantor | University of New Brunswick | |
| thesis.degree.level | masters | |
| thesis.degree.name | M.Sc.E. |