Suggestion of new models for predicting performance of raise boring machines based on indentation tests

Aydin Shaterpour-Mamaghani*, Hanifi Copur, Cemal Balci, Deniz Tumac, Ayhan Kocbay, Engin Dogan, Ergun Altintas, Tayfun Erdogan, Onur Sirin, Arif Gumus

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Özet

Raise Boring Machines (RBMs) as the fast, safe, and efficient machines are used for drilling/excavation of vertical and/or inclined shafts in the underground structures. Proper selection and accurate performance prediction of these machines are very important issues affecting the cost estimation and planning of the projects. However, due to lack of reliable models, performance prediction of these machines has been seriously limited. This study aims at proposing new models for performance prediction of RBMs based on indentation and full-scale linear cutting tests, as well as physical–mechanical property tests, performed on rock samples. Operational and performance data of RBMs and rock samples with different geological origins are collected from different raise boring projects. Then, indentation tests are performed on different core samples by using a real-life tungsten carbide insert of the button cutters used on the analyzed RBMs. Full-scale linear cutting tests were previously performed on the block samples by using a 305 mm (12 in.) diameter button (kerf) cutter. The study indicates that velocity of S-wave and Cerchar abrasivity index can be used to estimate brittleness index of rocks, which is also obtained from the indentation tests. It also shows the feasibility of using power function as relationship between the indentation force and penetration values for performance prediction of RBMs. It is shown that the results of indentation tests can be used in both empirical and deterministic predictions of RBM performance. However, the proposed models should be improved by additional rock types, operational-performance parameters of different RBMs, indentation and cutting test results of different rocks.

Orijinal dilİngilizce
Makale numarası105181
DergiTunnelling and Underground Space Technology
Hacim138
DOI'lar
Yayın durumuYayınlandı - Ağu 2023

Bibliyografik not

Publisher Copyright:
© 2023 Elsevier Ltd

Finansman

This study has been funded by grants from the Scientific and Technological Research Council of Turkey (TUBITAK) (MAG-217 M729). This study summarizes some of the results of Ph.D. research work carried out by the Aydin Shaterpour-Mamaghani. Scientific and Technological Research Council of Turkey (TUBITAK) is thanked for its support in Project MAG-217M729. The authors are grateful to the support of Eczacibasi Esan lead-zinc underground mine, DSI (State Water Authority), Limak, Efemcukuru Gold Mine (Tuprag), Eti Bakir Adiyaman Copper Mine, Sargin Construction and Machinery Industry Trade Inc.; this work would be impossible without their support.

FinansörlerFinansör numarası
Eti Bakir Adiyaman Copper Mine, Sargin Construction and Machinery Industry Trade Inc.
State Water Authority
Türkiye Bilimsel ve Teknolojik Araştırma KurumuMAG-217 M729
Defence Science Institute

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