{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/67833"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/67833","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Soil-Conduit Interaction and Structural Stability of Mole Drains","abstract":"The structural design of corrugated plastic conduits and mole drains is not adequate. Small diameter mole drains and plastic conduits buried in Lloyd clay were examined both experimentally in a laboratory soil bin and numerically by the finite element method, for various loading conditions.","abstract_html":"The structural design of corrugated plastic conduits and mole drains is not adequate. Small diameter mole drains and plastic conduits buried in Lloyd clay were examined both experimentally in a laboratory soil bin and numerically by the finite element method, for various loading conditions.","abstract_has_math":false,"creators":["Singh, Pratap Narain"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"Ph.D.","degree_level":"Dissertation","degree_discipline":"Agricultural Engineering","degree_department":null,"school":null,"contributors":[],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2014,"date_issued":"2014-12-14T06:37:12Z","date_published":"2014-12-14T06:37:12Z","updated_at":"2026-07-22T22:25:58Z","subjects":["Engineering, Agricultural"],"languages":["eng"],"rights":[],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["(UMI)AAI8114483"],"render_values":[{"text":"(UMI)AAI8114483","href":null,"code":true}]}]},"links":{"outbound_url":"http://hdl.handle.net/2142/67833","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:creator","label":"Author","values":["Singh, Pratap Narain"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2014-12-14T06:37:12Z","10000-01-01","1981"]},{"key":"dc:type","label":"Dc Type","values":["text"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Agricultural Engineering"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Dissertation"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Ph.D."]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["University of Illinois at Urbana-Champaign"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Engineering, Agricultural"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["eng"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["http://hdl.handle.net/2142/67833","(UMI)AAI8114483"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["The structural design of corrugated plastic conduits and mole drains is not adequate. Small diameter mole drains and plastic conduits buried in Lloyd clay were examined both experimentally in a laboratory soil bin and numerically by the finite element method, for various loading conditions.","In the laboratory study, mole drains were constructed and were subjected to live loads on the soil surface using a press. The resulting applied pressure-vertical strain relationships for mole drains were determined. Similarly, experiments were performed on 75-mm and 100-mm diameter plastic conduits in the soil bin.","Elastic finite element and elasto-plastic finite element models were both used to simulate the soil-mole and soil-conduit systems tested in the laboratory soil bin. The simulated results of the finite element analyses were compared to the laboratory test results. The results obtained using elastic and elasto-plastic material models were nearly identical. The laboratory deformations of the mole drains and plastic conduits agree well with the simulated deformations for strain levels less than 1.5 percent. At values above 1.5 percent vertical strain, the finite element method predicted vertical strain much lower than those measured in the laboratory.","Finite element analyses were next performed to simulate the soil-mole and soil-conduit system for field situations. The deformation of the mole drain and the plastic conduit for installations with depths of 1 m or more were found to be elastic for pressure levels generally occurring in the field situation.","Made available in DSpace on 2014-12-14T06:37:12Z (GMT). No. of bitstreams: 1 8114483.pdf: 7938466 bytes, checksum: dc0814ed7bbecffe9bf70c6abf04277b (MD5) Previous issue date: 1981","Embargo set by: Seth Robbins for item 68011 Lift date: Forever Reason: Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs","Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs","U of I Only","280 p.","Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 1981."]},{"key":"dc:title","label":"Title","values":["Soil-Conduit Interaction and Structural Stability of Mole Drains"]}]}],"canonical_facts":{"dc:creator":["Singh, Pratap Narain"],"dc:date":["2014-12-14T06:37:12Z","10000-01-01","1981"],"dc:description":["The structural design of corrugated plastic conduits and mole drains is not adequate. Small diameter mole drains and plastic conduits buried in Lloyd clay were examined both experimentally in a laboratory soil bin and numerically by the finite element method, for various loading conditions.","In the laboratory study, mole drains were constructed and were subjected to live loads on the soil surface using a press. The resulting applied pressure-vertical strain relationships for mole drains were determined. Similarly, experiments were performed on 75-mm and 100-mm diameter plastic conduits in the soil bin.","Elastic finite element and elasto-plastic finite element models were both used to simulate the soil-mole and soil-conduit systems tested in the laboratory soil bin. The simulated results of the finite element analyses were compared to the laboratory test results. The results obtained using elastic and elasto-plastic material models were nearly identical. The laboratory deformations of the mole drains and plastic conduits agree well with the simulated deformations for strain levels less than 1.5 percent. At values above 1.5 percent vertical strain, the finite element method predicted vertical strain much lower than those measured in the laboratory.","Finite element analyses were next performed to simulate the soil-mole and soil-conduit system for field situations. The deformation of the mole drain and the plastic conduit for installations with depths of 1 m or more were found to be elastic for pressure levels generally occurring in the field situation.","Made available in DSpace on 2014-12-14T06:37:12Z (GMT). No. of bitstreams: 1 8114483.pdf: 7938466 bytes, checksum: dc0814ed7bbecffe9bf70c6abf04277b (MD5) Previous issue date: 1981","Embargo set by: Seth Robbins for item 68011 Lift date: Forever Reason: Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs","Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs","U of I Only","280 p.","Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 1981."],"dc:identifier":["http://hdl.handle.net/2142/67833","(UMI)AAI8114483"],"dc:language":["eng"],"dc:subject":["Engineering, Agricultural"],"dc:title":["Soil-Conduit Interaction and Structural Stability of Mole Drains"],"dc:type":["text"],"thesis:degree_discipline":["Agricultural Engineering"],"thesis:degree_level":["Dissertation"],"thesis:degree_name":["Ph.D."],"thesis:institution_name":["University of Illinois at Urbana-Champaign"]},"updated_at":"2026-07-22T22:25:58Z"}