Application of Modified Tunnel Support System for Jointed Rock Mass along Himalayas

N. Abbas; K. G. Li; L. Wang; M. Z. Emad; Nasir Abbas

doi:10.1134/S1062739125030068

Application of Modified Tunnel Support System for Jointed Rock Mass along Himalayas

N. Abbas^*, K. G. Li^*, L. Wang, M. Z. Emad, Nasir Abbas^*

^*Corresponding author for this work

Department of Petroleum Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

Abstract: Support design in underground mining and tunneling excavations is dependent on the geological and geotechnical behavior of rock mass. The rock mass rating and Q-System are the key parameters to design support system. The existing support system in tunneling projects along Himalayas were studied, and it was observed that the support was lighter in some cases and heavier in others. Based on the real time data obtained from active tunneling projects and geologic conditions along Himalayas the modified support criteria (RMR₁₉) using back calculations and incorporating stress factor in RMR and Q have been applied in this study. The stress reduction factor of the Q-system was also studied. The existing and modified RMR and Q are statistically correlated with a significant R² value.

Original language	English
Pages (from-to)	390-400
Number of pages	11
Journal	Journal of Mining Science
Volume	61
Issue number	3
DOIs	https://doi.org/10.1134/S1062739125030068
State	Published - Jun 2025

Bibliographical note

Publisher Copyright:
© Pleiades Publishing, Ltd. 2025.

Keywords

rock mass rating
stress reduction factor
support
tunneling

ASJC Scopus subject areas

Geotechnical Engineering and Engineering Geology
Geology

Access to Document

10.1134/S1062739125030068

Cite this

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title = "Application of Modified Tunnel Support System for Jointed Rock Mass along Himalayas",

abstract = "Abstract: Support design in underground mining and tunneling excavations is dependent on the geological and geotechnical behavior of rock mass. The rock mass rating and Q-System are the key parameters to design support system. The existing support system in tunneling projects along Himalayas were studied, and it was observed that the support was lighter in some cases and heavier in others. Based on the real time data obtained from active tunneling projects and geologic conditions along Himalayas the modified support criteria (RMR19) using back calculations and incorporating stress factor in RMR and Q have been applied in this study. The stress reduction factor of the Q-system was also studied. The existing and modified RMR and Q are statistically correlated with a significant R2 value.",

keywords = "rock mass rating, stress reduction factor, support, tunneling",

author = "N. Abbas and Li, \{K. G.\} and L. Wang and Emad, \{M. Z.\} and Nasir Abbas",

note = "Publisher Copyright: {\textcopyright} Pleiades Publishing, Ltd. 2025.",

year = "2025",

month = jun,

doi = "10.1134/S1062739125030068",

language = "English",

volume = "61",

pages = "390--400",

journal = "Journal of Mining Science",

issn = "1062-7391",

publisher = "Pleiades Publishing",

number = "3",

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TY - JOUR

T1 - Application of Modified Tunnel Support System for Jointed Rock Mass along Himalayas

AU - Abbas, N.

AU - Li, K. G.

AU - Wang, L.

AU - Emad, M. Z.

AU - Abbas, Nasir

N1 - Publisher Copyright: © Pleiades Publishing, Ltd. 2025.

PY - 2025/6

Y1 - 2025/6

N2 - Abstract: Support design in underground mining and tunneling excavations is dependent on the geological and geotechnical behavior of rock mass. The rock mass rating and Q-System are the key parameters to design support system. The existing support system in tunneling projects along Himalayas were studied, and it was observed that the support was lighter in some cases and heavier in others. Based on the real time data obtained from active tunneling projects and geologic conditions along Himalayas the modified support criteria (RMR19) using back calculations and incorporating stress factor in RMR and Q have been applied in this study. The stress reduction factor of the Q-system was also studied. The existing and modified RMR and Q are statistically correlated with a significant R2 value.

AB - Abstract: Support design in underground mining and tunneling excavations is dependent on the geological and geotechnical behavior of rock mass. The rock mass rating and Q-System are the key parameters to design support system. The existing support system in tunneling projects along Himalayas were studied, and it was observed that the support was lighter in some cases and heavier in others. Based on the real time data obtained from active tunneling projects and geologic conditions along Himalayas the modified support criteria (RMR19) using back calculations and incorporating stress factor in RMR and Q have been applied in this study. The stress reduction factor of the Q-system was also studied. The existing and modified RMR and Q are statistically correlated with a significant R2 value.

KW - rock mass rating

KW - stress reduction factor

KW - support

KW - tunneling

UR - https://www.scopus.com/pages/publications/105019329599

U2 - 10.1134/S1062739125030068

DO - 10.1134/S1062739125030068

M3 - Article

AN - SCOPUS:105019329599

SN - 1062-7391

VL - 61

SP - 390

EP - 400

JO - Journal of Mining Science

JF - Journal of Mining Science

IS - 3

ER -

Application of Modified Tunnel Support System for Jointed Rock Mass along Himalayas

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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