AI SearchReduction of over-excavation drill and blast tunnel excavation by optimizing blasting design (Record no. 98372)
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| 000 -LEADER | |
|---|---|
| fixed length control field | 03948nas a2200409 a 4500 |
| 005 - DATE AND TIME OF LATEST TRANSACTION | |
| control field | 20260818175715.0 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION | |
| fixed length control field | 230726s2023 th uu m rtt 0| a1eng d |
| 035 ## - SYSTEM CONTROL NUMBER | |
| System control number | .b12409236 |
| 099 #9 - LOCAL FREE-TEXT CALL NUMBER (OCLC) | |
| Classification number | AIT Thesis no.GE-22-11 |
| 100 0# - MAIN ENTRY--PERSONAL NAME | |
| Personal name | Rattanon Doungdeeying |
| 245 10 - TITLE STATEMENT | |
| Title | Reduction of over-excavation drill and blast tunnel excavation by optimizing blasting design |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. | |
| Place of publication, distribution, etc. | Pathum Thani, Thailand : |
| Name of publisher, distributor, etc. | Asian Institute of Technology, |
| Date of publication, distribution, etc. | 2023 |
| 300 ## - PHYSICAL DESCRIPTION | |
| Extent | 154 leaves : |
| Other physical details | ill. |
| 490 1# - SERIES STATEMENT | |
| Series statement | Thesis ; |
| Volume/sequential designation | no. GE-22-11 |
| 500 ## - GENERAL NOTE | |
| General note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering in Geotechnical and Earth Resources Engineering |
| 502 ## - DISSERTATION NOTE | |
| Dissertation note | Thesis (M. Eng.) - Asian Institute of Technology, 2023 |
| 520 ## - SUMMARY, ETC. | |
| Summary, etc. | The optimized method to reduce overbreak during tunnel construction using the NATM method at a High-speed railway project in Thailand, specifically the Contact 3-2 tunnel construction work between Muak Lek and Lam Takhong, has been examined in this study. Overbreak in underground excavation refers to the void created during excavation beyond the payable excavation line or pay line. In this thesis, the payable excavation line has been set at 15 cm or 5% from the excavation line. After conducting a site visit and collecting data, the evaluation reveals that the rock formation consists of shale, limestone, clay, silty clay, and mudstone, resulting in approximately 30% overbreak in class IV. After comparing the data with the doubling track project located nearby, which has a tunnel length of 2,433.74 meters and 552 x-sections, the percentage of overbreak in classes II, III, and IV is found to be 11.67%, 12.52%, and 13.98%, respectively. Therefore, the factors that need to be controlled during drilling and blasting excavation are the geological condition, the length of drill holes, the powder factor, and the smooth blasting technique. The geological condition at the tunnel face can guide site engineer in designing the drilling pattern, and the length of drilling depends on the rock condition, which the driller must control. The powder factor also affects overbreak, and a powder factor of approximately 1.3 kg/Cu.m. is recommended for rock class IV based on data from the doubling track project. The smooth blasting technique, which uses small emulsion and detonating cord to blast at the contour line, controls the energy distribution of the explosives used in the blasting process. A blasting test was conducted at the entranceway of the Muak Lek tunnel, where the rock condition was found to be class IV, with shale and mud clay mixing at the tunnel face. By controlling the length of the drilling pattern, powder factor, and using the smooth blasting technique, the overbreak was reduced to around 10% in the tested section. Therefore, these factors should be implemented to control overbreak during tunnel construction. |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | Excavation |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | Tunneling |
| 700 1# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Kuo-Chieh Chao, |
| Relator term | Chairperson |
| 700 0# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Noppadol Phien-Wej, |
| Relator term | Co-Chairperson |
| 700 0# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Avirut Puttiwongrak, |
| Relator term | Examination Committee |
| 700 0# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Krit Saowiang, |
| Relator term | Examination Committee |
| 710 2# - ADDED ENTRY--CORPORATE NAME | |
| Corporate name or jurisdiction name as entry element | Right Tunnelling PCL Scholarship, |
| Relator term | Scholarship Donor |
| 810 2# - SERIES ADDED ENTRY--CORPORATE NAME | |
| Corporate name or jurisdiction name as entry element | Asian Institute of Technology. |
| Title of a work | Thesis ; |
| Volume/sequential designation | no. GE-22-11 |
| 856 40 - ELECTRONIC LOCATION AND ACCESS | |
| Materials specified | Full-Text |
| Uniform Resource Identifier | <a href="http://203.159.5.9/ait-thesis/detail.php?q=B19499">http://203.159.5.9/ait-thesis/detail.php?q=B19499</a> |
| 907 ## - LOCAL DATA ELEMENT G, LDG (RLIN) | |
| a | .b12409236 |
| b | mnait |
| c | m |
| 902 ## - LOCAL DATA ELEMENT B, LDB (RLIN) | |
| a | 250421 |
| 998 ## - LOCAL CONTROL INFORMATION (RLIN) | |
| Operator's initials, OID (RLIN) | 0 |
| Cataloger's initials, CIN (RLIN) | 230726 |
| First date, FD (RLIN) | m |
| -- | a |
| -- | m |
| -- | 0 |
| 945 ## - LOCAL PROCESSING INFORMATION (OCLC) | |
| l | mnarc |
| 945 ## - LOCAL PROCESSING INFORMATION (OCLC) | |
| l | mnarc |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Koha item type | 40-Archives |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Koha item type | 61-CD-ROM |
| 909 ## - LOCAL ITEMS USED | |
| Barcode | Barcode : 30050121040322 |
| CREATED | CREATED : 2023-07-24 |
| RECORD Id | RECORD # : i13457020 |
| LPATRON | LPATRON : 0 |
| LCHKIN | LCHKIN : - |
| RENEWALS | # RENEWALS : 0 |
| -- | # OVERDUE : 0 |
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| -- | TOT RENEW : 0 |
| 909 ## - LOCAL ITEMS USED | |
| Barcode | Barcode : - |
| CREATED | CREATED : 2023-07-24 |
| RECORD Id | RECORD # : i13457032 |
| LPATRON | LPATRON : 0 |
| LCHKIN | LCHKIN : - |
| RENEWALS | # RENEWALS : 0 |
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| -- | IUSE3 : 0 |
| -- | TOT CHKOUT : 0 |
| -- | TOT RENEW : 0 |
| Withdrawn status | Lost status | Damaged status | Not for loan | Home library | Current library | Shelving location | Date acquired | Total checkouts | Full call number | Barcode | Date last seen | Copy number | Price effective from | Koha item type |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Available for Loans | Asian Institute of Technology Library | Asian Institute of Technology Library | Archives | 18/08/2026 | AIT Thesis no.GE-22-11 | 30050121040322 | 18/08/2026 | 1 | 18/08/2026 | 40-Archives | ||||
| Available for Loans | Asian Institute of Technology Library | Asian Institute of Technology Library | Archives | 18/08/2026 | AIT Thesis no.GE-22-11 | 18/08/2026 | 18/08/2026 | 61-CD-ROM |