A Numerical Investigation to Calculate Ultimate Limit State Capacity of Cable Bolts Subjected to Impact Loading

Reviewer’s Comments

Authors’ Comments

The title of the article is prediction of cable bolts failure mode. Whether the innovation of the article focuses on the development and optimization of numerical simulation means rather than the analysis of cable bolts failure mode? Because scholars have done relevant research on several types of influencing factors in the follow-up, it is suggested that the title be adjusted.

A new Title was suggested as follow .

Numerically Investigation to Calculate Ultimate limit State  Capacity of the Cable Bolts Subjected to Impact Loading

In the field situation, the rock stratum anchored by the cable bolts is not separated from each other, there is contact bonding between the rock strata, and the rock mass and the cable bolts are subject to the shear force together. Do you need to consider this factor?

In the field, there is a gap between the different layers of the rock mass. This gap will lead to creating slip between different rock layers. Also, the bond action strength is negligible in the cable bolts.

If it is simply the shear failure of the cable bolts, can the concrete block volume be reduced to reduce the number of meshes and improve the calculation speed, and will this boundary effect have an impact on the results?

The failure mode is a combination of the tension of shear modes. However, the concrete block sizes may change local or global failure mode. In the current simulation the main focus was devoted on the structural behaviour cable bolts rather than evaluation of the concrete blocks.

The analysis of the energy dissipation law of the cable bolts under the subsequent dynamic load is not deep enough, and it is recommended to add further content.

This is very good comments. It needs to allocate different chapter or paper to discuss about the effect of the different parameters on the energy dissipation. It is very hard to discuss in this paper.

Introduction’ can be properly summarized and simplified.

It was modified and improved.

 P427 and P436 did not describe the formula parameters.

It was modified and improved.

The references are relatively old. It is recommended to add the references of recent years.

A recent relevant paper was added.

Reviewer’s Comments

Authors’ Comments

The abstract should be improved to highlight the advantages and results of the model.

It was improved accordingly.

In introduction, the summary of the literature is comprehensive but the format text and citation is completely inconsistent with the submission guidelines.

It was amended.

What is the rationale for creating a 50 mm gap to prevent blocks from touching each other?

In the field, there is a gap between the different layers of the rock mass. This gap will lead to creating slip between different rock layers. Also, the bond action strength is negligible in the cable bolts. We assume this gap is around 50 mm.

Whether the author considers the influence of the compressive strength value of concrete. In terms of rock burst characteristics, the rock strength is generally larger.

In the current simulation the main focus was devoted on the structural behaviour cable bolts rather than evaluation of the concrete blocks. That topic can be considered as a separate research topic.

Subsections 7.1-7.3 have the same headings, check it carefully.

Thanks and it was amended.

It is suggested to pay attention to the description of the conclusions, which can better reflect the characteristics of this research.

Thanks and it was amended.

Please review the manuscript carefully, and making corrections to incorrect text formatting and figure. For example, lines 532-654，lines 687-719, the overall text is not centered and so on.

Thanks and it was amended.

Reviewer’s Comments

Authors’ Comments

The Introduction section is short. Please provide more information. An enhanced review is required. Why do not show some description in context why it is important to conduct this study?

The following sentences were added.

The main novelty of the current research is to suggest a reliable computational tool to investigate the influence of the different key parameters in the cable bolts on the ultimate capacity. The suggested method is significantly a cost-effective technique in compared with the experimental investigations. 

Provide some more recent reference of 2020-2022. Please consider the suggested research in your paper when enhancing the literature review. I believe they are worth considering in your paper. Krykovskyi, O., Krykovska, V., & Skipochka, S. (2021). Interaction of rock-bolt supports while weak rock reinforcing by means of injection rock bolts. Mining of Mineral Deposits, 15(4), 8-14. doi:10.33271/mining15.04.008 Snihur, V., Bondarenko, V., Kovalevska, I., Husiev, O., & Shaikhlislamova, I. (2022). Optimization solution substantiation for resource-saving maintenance of workings. Mining of Mineral Deposits, 16(1), 9-18. doi:10.33271/mining16.01.009

The relevant reference was added.

The aim and the tasks of the research should be highlighted at the end of the Introduction section.

It was added.

Section 7 contain 3 subsections: 7.1. Numerical Model Simplification; 7.2. Numerical Model Simplification; and 7.3. Numerical Model Simplification. I suppose it is mistake.

Mistake rectified, correct headings inputted

I am not sure that it is important to give Appendix B.1. and B.2.

B.1 and B.2 removed from both in-text referencing and appendices.

The references across the text are given in incorrect format. You should use the numeration of in-text references as [1], [2], [3-6] (ascending order). The references are presented not in MDPI style. You need to reformat existing references with a proper guide.

Adjusted to MDPI style

There are presented many Figures in the paper, but little text description and discussion. Please enhance it.

It was modified.

How your study will contribute to future.

In the 8.1. Future Work was explained.

Reviewer’s Comments

Authors’ Comments

in 4.1.2 -Line 470 to 478-- need more elaboration of the two models and parameters used (Please present it in a table)

The following reference was added which can cover all relevant parameters.

https://ro.uow.edu.au/theses/775/