Prediction Model of Drilling Performance for Percussive Rock Drilling Tool
This study suggests a method for quantitatively estimating the drilling performance of the down-the-hole (DTH) hammer during percussive drilling of rock surfaces. A pneumatic dynamic model of the DTH hammer was developed that considers the mass flow rate relations representing the orifice opening ar...
Saved in:
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2020-01-01
|
| Series: | Advances in Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/2020/8865684 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832566324543356928 |
|---|---|
| author | Dae-Ji Kim Jaewon Kim Booyeong Lee Min-Seok Shin Joo-Young Oh Jung-Woo Cho Changheon Song |
| author_facet | Dae-Ji Kim Jaewon Kim Booyeong Lee Min-Seok Shin Joo-Young Oh Jung-Woo Cho Changheon Song |
| author_sort | Dae-Ji Kim |
| collection | DOAJ |
| description | This study suggests a method for quantitatively estimating the drilling performance of the down-the-hole (DTH) hammer during percussive drilling of rock surfaces. A pneumatic dynamic model of the DTH hammer was developed that considers the mass flow rate relations representing the orifice opening areas of the air tube, the piston, and bit flushing channels. A drill bit motion model was developed to represent the dynamics of a drill bit impacted by a dropped piston and explain the impact stress propagation and rock-crushing mechanism. The rock-crushing effect of the drill button bit was measured through a piston drop test. The pneumatic hammer model and drill bit motion model were then combined in a prediction model to determine the impact efficiency according to different rock types (i.e., soft, medium-hard, and very hard). The drilling efficiency was defined as the input value of the prediction model, which was used to simulate the drilling performance of DTH hammers considering the rock type and dynamic effect of the drill bit. Finally, the simulation results were compared with the results of in situ drilling tests for verification. |
| format | Article |
| id | doaj-art-1faf7ce2703d4efdb321799c948e030b |
| institution | Kabale University |
| issn | 1687-8086 1687-8094 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj-art-1faf7ce2703d4efdb321799c948e030b2025-02-03T01:04:28ZengWileyAdvances in Civil Engineering1687-80861687-80942020-01-01202010.1155/2020/88656848865684Prediction Model of Drilling Performance for Percussive Rock Drilling ToolDae-Ji Kim0Jaewon Kim1Booyeong Lee2Min-Seok Shin3Joo-Young Oh4Jung-Woo Cho5Changheon Song6Department of Mechanical Engineering, Hanyang University, 55 Hanyangdaehak-ro, Sangnok-gu, Ansan, Gyeonggi-do 15588, Republic of KoreaMechanical Components and Materials R&D Group, Korea Institute of Industrial Technology, 88-42 Yongju-ro, Jangsu-myeon, Yeongju-si, Gyeongsangbuk-do 36144, Republic of KoreaDepartment of Mechanical Engineering, Hanyang University, 55 Hanyangdaehak-ro, Sangnok-gu, Ansan, Gyeonggi-do 15588, Republic of KoreaSafety System R&D Group, Korea Institute of Industrial Technology, 15 Jisiksaneop-ro, Hayang-eup, Gyeongsan-si, Gyeongsangbuk-do 38408, Republic of KoreaSafety System R&D Group, Korea Institute of Industrial Technology, 15 Jisiksaneop-ro, Hayang-eup, Gyeongsan-si, Gyeongsangbuk-do 38408, Republic of KoreaSafety System R&D Group, Korea Institute of Industrial Technology, 15 Jisiksaneop-ro, Hayang-eup, Gyeongsan-si, Gyeongsangbuk-do 38408, Republic of KoreaSafety System R&D Group, Korea Institute of Industrial Technology, 15 Jisiksaneop-ro, Hayang-eup, Gyeongsan-si, Gyeongsangbuk-do 38408, Republic of KoreaThis study suggests a method for quantitatively estimating the drilling performance of the down-the-hole (DTH) hammer during percussive drilling of rock surfaces. A pneumatic dynamic model of the DTH hammer was developed that considers the mass flow rate relations representing the orifice opening areas of the air tube, the piston, and bit flushing channels. A drill bit motion model was developed to represent the dynamics of a drill bit impacted by a dropped piston and explain the impact stress propagation and rock-crushing mechanism. The rock-crushing effect of the drill button bit was measured through a piston drop test. The pneumatic hammer model and drill bit motion model were then combined in a prediction model to determine the impact efficiency according to different rock types (i.e., soft, medium-hard, and very hard). The drilling efficiency was defined as the input value of the prediction model, which was used to simulate the drilling performance of DTH hammers considering the rock type and dynamic effect of the drill bit. Finally, the simulation results were compared with the results of in situ drilling tests for verification.http://dx.doi.org/10.1155/2020/8865684 |
| spellingShingle | Dae-Ji Kim Jaewon Kim Booyeong Lee Min-Seok Shin Joo-Young Oh Jung-Woo Cho Changheon Song Prediction Model of Drilling Performance for Percussive Rock Drilling Tool Advances in Civil Engineering |
| title | Prediction Model of Drilling Performance for Percussive Rock Drilling Tool |
| title_full | Prediction Model of Drilling Performance for Percussive Rock Drilling Tool |
| title_fullStr | Prediction Model of Drilling Performance for Percussive Rock Drilling Tool |
| title_full_unstemmed | Prediction Model of Drilling Performance for Percussive Rock Drilling Tool |
| title_short | Prediction Model of Drilling Performance for Percussive Rock Drilling Tool |
| title_sort | prediction model of drilling performance for percussive rock drilling tool |
| url | http://dx.doi.org/10.1155/2020/8865684 |
| work_keys_str_mv | AT daejikim predictionmodelofdrillingperformanceforpercussiverockdrillingtool AT jaewonkim predictionmodelofdrillingperformanceforpercussiverockdrillingtool AT booyeonglee predictionmodelofdrillingperformanceforpercussiverockdrillingtool AT minseokshin predictionmodelofdrillingperformanceforpercussiverockdrillingtool AT jooyoungoh predictionmodelofdrillingperformanceforpercussiverockdrillingtool AT jungwoocho predictionmodelofdrillingperformanceforpercussiverockdrillingtool AT changheonsong predictionmodelofdrillingperformanceforpercussiverockdrillingtool |