Guidelines of Full Paper Preparation for ARMS8vietrocknet.org/app/webroot/img/files/Full_Paper... · Web viewGuidelines of Full Paper Preparation for VCRES2019 First A. Author a *

VCRES2019 an ISRM specialized conference VCRES201922-24 Nov. 2019, Hanoi, Vietnam

Guidelines of Full Paper Preparation for VCRES2019

First A. Authora* and Second B. Authorb

a Vietnam Society for Rock Mechanics, Hanoi, VietnambRock Mechanics Measurement Ltd., Beijing, China

* [email protected] (corresponding author’s E-mail)

Abstract

This article serves as the template of the full paper (final manuscript) for your abstract submitted

to the VCRES2019. The abstract part will be involved in a Abstract Booklet, and the full paper will be

published as a proceeding, which will be distributed to all registered participants. Please use this

template when preparing your paper. This will ensure a uniform format in the publication. The paper

should be written in English and submitted as this MS Word file format and PDF file (in camera-

ready form and match ing the template for submission). The paper should begin with

1. Title: Please provide a descriptive title of the paper. The title should be concise and not span

more than 2 lines. Use Times New Roman font with a font size of 14 pts and in bold face for

the title.

2. Authors and affiliations: Include the first name, middle initial and surname of all the

authors. The affiliations of all the authors should be included. The e-mail of the

corresponding author should be shown.

3. Abstract: Not more than 35 0 words .

4. Keywords: Provide up to 5 keywords, separated by commas. The first letter of each word

should be capitalized.

5. All the above contents (i.e., title, authors’ names, affiliations, abstract, and keywords)

MUST be included within the first page .

The VCRES2019 is an ISRM specialized conference, held by Vietnamese N.G. of ISRM and Vietnam Society for Rock Mechanics, in Hanoi, Vietnam. All Map presentation in your paper must fit with laws of Vietnam government (ex. Map region South China Sea ( Bien Dong) disputed) or you could deleted map in your paper.

The subsequent pages should include numbered sections of Introduction, Theories (or Experiments), Results and Discussion, Conclusions, Acknowledgement, and References. Throughout the paper, use Times New Roman font with single spacing between lines. The recommended font size is 14 pts for the paper title and 11 pts elsewhere. The main text should be justified on both sides. The use of footnotes is discouraged. The paper length should be 6 page s or more but not exceed 10 pages .

The paper for the full paper must be submitted before Jan 15 , 201 5 via the symposium website using the same login details as your abstract submission.

mailto:[email protected]

Z

X

11.5 km

4.3 km

2.6 km

Y


Keywords: VCRES2019, Rock Mechanics, Hanoi, Slope Stability, Template

1. IntroductionThe International Workshop VCRES2019 to be held on 12-13 March 2015 in Hanoi, the capital of

Vietnam, with imperial citadel of Thang Long - the world's heritage.

2. Theories (or Experiments)2.1 Citation, tables and figures

Sub-titles are allowed in each section. In the text, cite references in the author-year format, e.g.

(Author, 1986) or (Author 1 and Author 2, 1997) or (Author 1 et al., 2003) or (Author 1, 2006; Author

2, 2010) or (Author, 2003a; 2003b; 2010). The list of references should be placed at the end of the

paper in the alphabetical order. The equations should be justified at the center and the equation

numbers in parenthesis should be justified on the right side as Eq. (1).

V=E ( DW β )

n−1

(1)

The tables and figures should be numbered in sequence and captioned as shown in Table 1 and

Fig.1. The followings are the examples for a table and a figure.

Table 1 Porosity, water content and water saturation ratio of Noboribetsu welded tuff.

Porosity

(%)

Case Water content Water saturation ratio

(%)(mass %) (vol %)

24.1 (a) 0.30 0.54 2

(b) 6.00 10.8 45

(c) 12.0 21.6 90


Fig. 1. An example of 3-D FEM models for the district including the Torigatayama limestone mine.

3. ConclusionsWe are looking forward to receiving your paper. For any questions about the guidelines, please

contact with VCRES2019 registration office at [email protected] .

Acknowledgements The Organizing Committee greatly appreciates your contribution to make the symposium fruitful

and exciting.

ReferencesKodama, J., Fujii, Y., Goto, T. and Hagan, P., 2012, Effect of loading rate on strength and failure

process of frozen welded tuff, Proc. of 7th Asian Rock Mechanics Sympo., 638-645.

Kodama, J., Miyamoto, T., Kawasaki, S., Fujii, Y., Kaneko, K. and Hagan, P., 2013, Estimation of

regional stress state and Young’s modulus by back analysis of mining-induced deformation, Int. J.

Rock Mech. Min. Sci., 63, 1-11.



Determining cracks in the concrete and rock fouandation by scanning/camera method in the borehole

Nguyen Cong Chinh*,a, Ho Minh Longa, Vu Ngoc Hunga, Dang Thi Thanh Huyena

a Power Engineering Consulting joint stock No.1, Hanoi, Vietnam

* [email protected] (corresponding author’s E-mail)

AbstractIn brief: The article introduces about the method of identifying cracks, weak zones in rockmass

and concrete blocks comprising of azimuth, distribution depth, width and filled mater, by

scanning/camera method in the borehole with high-tech scanning head.

Keyword: Camera, Scan, Borehole, Crack, PECC1

1. Introduction

In the rockmass at the foundation as well as large concrete block, determining the defects such as

cracks, fracture zones pays important role in assessing of physio-mechanical properties of rockmass

at the foundation and ability to work of concrete blocks.

Currently method of scanning on the wall of the borehole using high-tech head is the most effective

objectively method to determine the defects in studied subject. This method allows to determine

fully cracks, detects in the borehole.

2. Content and principle of scanning the wall of the borehole

Scanning /camera progress uses equipment QL40 OBI-2G with scan eyes, sensors and Led light to

rotary scanography continuously 360 in the borehole with diameter of 65mm-530mm, depth <300m

in condition of water or dry, with or without casing. The results obtains the parameters of the actual

diameter, magnetic data, the defect and structure data. These data displays and write directly to the

memory of computer, after that use specialized software to analyse and process the data, supply

final results with accuracy of mm.

Principle: Based on spacy structure of cracks, scanning and collecting data is carried out along the

wall of the borehole (Figure 1). Scheme of work in the borehole shows to the depth with main

direction of North – South and both sides of East – North. Figure 2 shows the surface with a crack

and scanning result, analysed rersult of scanning in the borehole.



Obtained scanning result in the borehole presents correctly and objectively the parameters: Color of

bedrock, weathering level, boundary of lithology, fracturing level, distribution of cracks, the defects

in rockmass/concrete block. On basic of obtained data and analysed process, maybe implement the

model emulation 3D rockmass/concrete block to assess actual condition.

Figure 1: Strike, - Azimuth, Dip direction and dip angle - Tlit, Angle of dip)

Figure 2: Analysing principle and analysed result of scanning in the borehole

3. Application in hydropower project

In Viet Nam, high-tech scanning method has been applied effectively by PECC 1 in the hydropower

project with the purpose of checking, evaluating and monitoring rockmass at the foundation and

concrete dam.


At damsite, we have been determined, surveyed and monitored all cracks in 4 scanning periods in

the borehole to assess the raising up of the intake and check whether or not occur deep sliding in

bedrock foundation (Figure 3).

Figure 3: Location of scanning in the borehole at the

intake area

Scanning progress has been carried out 4 times in the boreholes at the intake area in which the first

in 11/2015, the second in 5/2016, the thirds in 3/2017 and the forth in 12/2017, obtained result is

comparing with each other and with different calculating results.

From analysed result of scanning process in the boreholes at the foundation of the intake

KCNN1/166m, statistic of the cracks on the leftbank of the damsite shows 07 cracks at grade 5 and

only a crack number 168 with strike of 252/15 coinciding with surface of layer at the depth of

109.63-110m, in width of 71mm, filled mater is clay, therefore must pay attention to stability. The

cracks at grade 6 are filled by quartz, calcite in hard state and mostly not affect to stability of the

project.

Filled mater: Surface of the layers has not any filled mater, 33 joints are covered by clay, fragment

(D/S), remaining is covered by quartz, calcite (TA/C). Large joints are filled up by clay, grits that is

paid attention to design calculating stability. (Figure 5, 6).


Mặt lớp; Series1;

163; 31%

KN5; Series1; 7; 1%

KN6; Series1; 14; 3%

KN7; Series1;

169; 32%

KN8; Series1;

178; 34%

Không có; Series1; 276; 52%

Dăm, sét; Se-ries1; 1;

0%

Sét; Se-ries1; 32;

6%

TA/Cancit; Series1; 222; 42%

Không có Dăm, sétSét TA/Cancit

Figure 5: Rate chart % classify discontinued surfaces with 531

discontinuities

Figure 6: Rate chart % classify filled mater of discontinued surfaces

Monitoring process has made an important contribution to verify the calculating theory in rockmass

before carrying out the execution as well as in operating process of the project. Obtained result is

similar to the calculation modeling 3D. Simultaneously, high – tech scanning method has been used

to determine the cause of seepage in concrete block of the intake to downstream of the body dam.

Therefore, on this basic, maybe give treatment thoroughly seepage to ensure safety and effectively

operating process of the project (Figure 7 – Figure 11).


Figure 7: Accumulation chart of cracking width in each measured period.

0.5 1 1.5 2 2.5 3 3.5 4 4.5 50

20406080

Tổng độ mở theo từng chu kỳĐộ chênh lệch giữa 2 chu lỳ đo

Chu kỳ quan trắcĐộ tr

ương

nở,

mm

Figure 8: Variation chart of cracking width

in the rockmass according to scanning

periods in the boreholes at the intake area

Figure 9: Location of scanning boreholes at the

intake area on the model 3D

Figure 10: Result of determining and

modeling 3D of the cracks in the concrete

K12-K13

Figure 11: Model of fault and crack on basic of

analysed results of the scanning in the boreholes

At some projects, high-tech scanning method in the borehole was applied to collect engineering

geological data and determine strike of the cracks, the faults in the borehole and establish the

fracturing model of rockmass.


4. Conclusion

Scanning/camera method in the borehole has been carried out by PECC1 is a modern method that

achieve effective and objective accuracy, help geo-engineer in process of collecting, calculating and

analysing detail of the cracks as strike, direction, location, width and filled matter,... Based on

collected data, it contributes to clarify the structure of rockmass, large concrete block, make a

reliable basic for general calculation of the project and screening all potential risks of the project.

And maybe use the block structure with fully fractured modelling in calculating of physio-mechanical

parameters of rockmass.

Refference

PECC1, 2018, Camera Report in some Hydropower projects

PECC1, 2018, Process of camera in borehole accepted by Electricity of Viet Nam

Documents

Guidelines of Full Paper Preparation for ARMS8vietrocknet.org/app/webroot/img/files/Full_Paper... · Web viewGuidelines of Full Paper Preparation for VCRES2019 First A. Author a *