석영반암 지역을 대상으로 한 발파진동 제어공법에 관한 연구
- Issued Date
- 2014
- Abstract
- In order to build the foundation of highly industrialized society, construction has been grown along with industrialization. Therefore, the expansion of the social infrastructure facilities also has become necessary.
Such social infrastructure facilities has been mainly created by civil work based on blasting work. The problems such as noise and vibration are common issues in infrastructure facilities. Such problems cause environmental and health problems to people. Therefore, people increase their demand for removing noise and vibration from construction. Excavating has to be performed effectively in order to prevent any damage on surrounding rock.
This study focused on combination of Cushion Blasting and Smooth Blasting to create smooth fracture surface and control blasting vibration.
The explosives were distributed in the hole and middle of the hole using rope and detonating cord downlines, and using different charging and stemming methods.
Eight patterns were performed a total of 160 blasting from the source of blasting to 9～88m distance and measured by blasting vibration sound level meter. Total 1,847 date were acquired and blasting vibration predict equations were derived by experiment.
In accordance with results of blast vibration prediction equations Peak Particle Velocity(PPV) and Peak Vector Sum(PVS) were analyzed by nomogram to investigate vibration characteristics. Adapting the Ministry standard "Road construction open-cut blasting design and construction guidelines" explosives of 0.125, 0.5, 1.6kg were performed and compared vibration decrease tend, suggest an appropriate pattern to be used.
The explosion was done 160 times to collect 1847 data from 9-88 meters.
Patterns by prediction equations Peak Particle Velocity(PPV) and Peak Vector Sum(PVS) through the average 10 ~ 100m distance from blasting resulted that in same explosives Ⅰ ~ Ⅳ, pattern-Ⅴ ~ Ⅷ the pattern-Ⅲ and Ⅳ was higher in the vibration decrease compared with pattern-Ⅰ,Ⅱ the pattern-Ⅶ and Ⅷ was higher in the vibration decrease compared with patternⅤ,Ⅵ.
The use of 50mm explosives could be the reason for it.
The vibration decrease is estimated lower as the distance got further.
1) Peak Particle velocity (PPV)
① pattern-Ⅰ: Ⅱ = maximum 9.18% decrease of vibration
② pattern-Ⅲ: Ⅳ = maximum 11.99% decrease of vibration
③ pattern-Ⅴ: Ⅵ = maximum 4.40% decrease of vibration
④ pattern-Ⅶ: Ⅷ = maximum 6.04% decrease of vibration
2) Peak Vector Sum (PVS)
① pattern-Ⅰ: Ⅱ = maximum 9.01% decrease of vibration
② pattern-Ⅲ: Ⅳ = maximum 12.01% decrease of vibration
③ pattern-Ⅴ: Ⅵ = maximum 4.54% decrease of vibration
④ pattern-Ⅶ: Ⅷ = maximum 5.87% decrease of vibration
At this point in the case of pattern-Ⅱ shows the lowest predicted value and the vibration, pattern-Ⅶ case shows the highest predictive value of vibration. Pattern-Ⅱ is thought to be the most suitable vibration control method in the cases.
The results of standard method of blasting vibration control by comparative analysis of explosives
1) Peak Particle velocity (PPV)
① When precision vibration control (over 0.125kg)
predict the vibration velocity of the pattern-Ⅱ was maximum 123.74% decreased up compared to predict the vibration velocity of the pattern-Ⅶ.
② When small vibration control (over 0.5kg)
predict the vibration velocity of the pattern-Ⅱ was maximum 115.26% decreased up compared to predict the vibration velocity of the pattern-Ⅶ.
③ When medium vibration control (over 1.6kg)
predict the vibration velocity of the pattern-Ⅱ was maximum 108.39% decreased up compared to predict the vibration velocity of the pattern-Ⅶ.
2) Peak Vector Sum (PVS)
① When precision vibration control (over 0.125kg)
predict the vibration velocity of the pattern-Ⅱ was maximum 123.43% decreased up compared to predict the vibration velocity of the pattern-Ⅶ.
② When small vibration control (over 0.5kg)
predict the vibration velocity of the pattern-Ⅱ was maximum 114.98% decreased up compared to predict the vibration velocity of the pattern-Ⅶ.
③ When medium vibration control (over 1.6kg)
predict the vibration velocity of the pattern-Ⅱ was maximum 108.14% decreased up compared to predict the vibration velocity of the pattern-Ⅶ.
In Part Stemming (pattern-Ⅰ, Ⅲ, Ⅴ, Ⅶ) and Full Stemming (pattern-Ⅱ, Ⅳ, Ⅵ, Ⅷ) of different stemming method, Part Stemming pattern was lower vibration velocity than Full Stemming pattern.
This was due to the mechanical and structural features in the bedrock of the study area. The more applicable amount of explosives was increase, the more vibration damping was increase.
The results of comparative analysis of the boundary of the explosives by the standard method of blasting vibration control method
1) Peak Particle velocity (PPV)
① When precision vibration control (over 0.125kg) :
Full Stemming Patterns : Part Stemming Patterns = 6.26% vibration decrease predict
② When small vibration control (over 0.5kg) :
Full Stemming Patterns : Part Stemming Patterns = 6.82% vibration decrease predict
③ When medium vibration control (over 1.6kg) :
Full Stemming Patterns : Part Stemming Patterns = 7.29% vibration decrease predict
2) Peak Vector Sum (PVS)
① When precision vibration control (over 0.125kg) :
Full Stemming Patterns : Part Stemming Patterns = 6.21% vibration decrease predict
② When small vibration control (over 0.5kg) :
Full Stemming Patterns : Part Stemming Patterns = 6.77% vibration decrease predict
③ When medium vibration control (over 1.6kg) :
Full Stemming Patterns : Part Stemming Patterns = 7.23% vibration decrease predict
Results of pattern blasting were cleaned near by blasting excavation line.
This characteristics of the ground vibration is judged by the bedrock of the propagation and structural dynamics (discontinuity distribution, etc.) depends on the characteristics of the study area.
Through this study, results can be utilized in the surface finish construction, shipyard dock, and urban underground construction ,and the study about difference from rock mechanical and structural properties of ground vibrations should be more pursued.
- Alternative Title
- A study on the vibration - controlled blasting in quartz porphyry rock mass
- Alternative Author(s)
- Chang, Ho Min
- Affiliation
- 에너지자원공학과
- Department
- 일반대학원 에너지자원공학
- Advisor
- 강추원
- Awarded Date
- 2014-02
- Table Of Contents
- List of Tables ⅳ
List of Figures ⅷ
Abstract ⅺ
1. 서론 1
2. 이론적 배경 4
2.1 지반진동 4
2.1.1 파의 이론 4
2.1.2 진동의 성분 6
2.1.3 진동의 물리적인 크기 10
2.2 발파진동 11
2.2.1 발파진동의 정의 11
2.2.2 발파진동과 지진진동의 비교 12
2.2.3 발파진동의 전파특성 14
2.3 발파진동의 추정식 16
2.3.1 95% 신뢰식의 결정 17
2.4 조절발파 18
2.4.1 Decoupling Effect 19
2.4.2 Line Drilling 20
2.4.3 Cushion Blasting 20
2.4.4 Smooth Blasting 21
2.4.5 Pre-Splitting 22
3. 현장실험 23
3.1 대상현장의 지형 및 지질 23
3.2 실내물성실험 25
3.2.1 실내물성실험의 종류 25
3.2.2 실내물성실험에 의한 결과분석 25
3.3 현장실험개요 27
3.4 현장실험 방법 및 결과 27
3.4.1 실험 방법 27
3.4.2 현장실험의 계측 34
4. 계측결과 및 분석 43
4.1 계측결과 43
4.2 Pattern별 최대입자속도(PPV)의 회귀분석 및 예측 47
4.2.1 Pattern-Ⅰ 47
4.2.2 Pattern-Ⅱ 49
4.2.3 Pattern-Ⅲ 51
4.2.4 Pattern-Ⅳ 53
4.2.5 Pattern-Ⅴ 55
4.2.6 Pattern-Ⅵ 57
4.2.7 Pattern-Ⅶ 59
4.2.8 Pattern-Ⅷ 61
4.3 Pattern별 최대벡터합(PVS)의 회귀분석 및 예측 63
4.3.1 Pattern-Ⅰ 63
4.3.2 Pattern-Ⅱ 65
4.3.3 Pattern-Ⅲ 67
4.3.4 Pattern-Ⅳ 69
4.3.5 Pattern-Ⅴ 71
4.3.6 Pattern-Ⅵ 73
4.3.7 Pattern-Ⅶ 75
4.3.8 Pattern-Ⅷ 77
5. 고찰 79
5.1 Pattern에 따른 최대입자속도(PPV)와 최대벡터합(PVS)의 진동특성 고찰 79
5.1.1 Pattern에 따른 최대입자속도(PPV) 80
5.1.2 Pattern에 따른 최대벡터합(PVS) 87
5.2 전색방법에 따른 최대입자속도(PPV)와 최대벡터합(PVS)의 진동특성 고찰 95
5.2.1 전색방법에 따른 최대입자속도(PPV) 96
5.2.2 전색방법에 따른 최대벡터합(PVS) 105
6. 결론 117
참 고 문 헌 120
Appendix 124
< List of Tables >
Table 2.1 Classification of elastic wave 6
Table 2.2 Comparison of blasting vibration and earthquake 14
Table 2.3 Merit of controlled blasting method 19
Table 3.1 Results of rock property test 26
Table 3.2 Blasting conditions 29
Table 3.3 Instrument specifications 35
Table 4.1 Prediction equation of blasting vibration for pattern-Ⅰ peak particle velocity(PPV) 47
Table 4.2 Prediction equation of blasting vibration for pattern-Ⅱ peak particle velocity(PPV) 49
Table 4.3 Prediction equation of blasting vibration for pattern-Ⅲ peak particle velocity(PPV) 51
Table 4.4 Prediction equation of blasting vibration for pattern-Ⅳ peak particle velocity(PPV) 53
Table 4.5 Prediction equation of blasting vibration for pattern-Ⅴ peak particle velocity(PPV) 55
Table 4.6 Prediction equation of blasting vibration for pattern-Ⅵ peak particle velocity(PPV) 57
Table 4.7 Prediction equation of blasting vibration for pattern-Ⅶ peak particle velocity(PPV) 59
Table 4.8 Prediction equation of blasting vibration for pattern-Ⅷ peak particle velocity(PPV) 61
Table 4.9 Prediction equation of blasting vibration for pattern-Ⅰ peak vector sum(PVS) 63
Table 4.10 Prediction equation of blasting vibration for pattern-Ⅱ peak vector sum(PVS) 65
Table 4.11 Prediction equation of blasting vibration for pattern-Ⅲ peak vector sum(PVS) 67
Table 4.12 Prediction equation of blasting vibration for pattern-Ⅳ peak vector sum(PVS) 69
Table 4.13 Prediction equation of blasting vibration for pattern-Ⅴ peak vector sum(PVS) 71
Table 4.14 Prediction equation of blasting vibration for pattern-Ⅵ peak vector sum(PVS) 73
Table 4.15 Prediction equation of blasting vibration for pattern-Ⅶ peak vector sum(PVS) 75
Table 4.16 Prediction equation of blasting vibration for pattern-Ⅷ peak vector sum(PVS) 77
Table 5.1 The influence of charge per delay on the predicted ground
vibration velocity for pattern-Ⅰ,Ⅱ(PPV) 82
Table 5.2 The influence of charge per delay on the predicted ground
vibration velocity for pattern-Ⅲ,Ⅳ(PPV) 82
Table 5.3 The influence of charge per delay on the predicted ground
vibration velocity for pattern-Ⅴ,Ⅵ(PPV) 83
Table 5.4 The influence of charge per delay on the predicted ground
vibration velocity for pattern-Ⅶ,Ⅷ(PPV) 83
Table 5.5 The influence of charge per delay on the predicted ground
vibration velocity for different patterns(PPV)-0.125kg 85
Table 5.6 The influence of charge per delay on the predicted ground
vibration velocity for different patterns(PPV)-0.5kg 86
Table 5.7 The influence of charge per delay on the predicted ground
vibration velocity for different patterns(PPV)-1.6kg 87
Table 5.8 The influence of charge per delay on the predicted ground
vibration velocity for pattern-Ⅰ,Ⅱ(PVS) 89
Table 5.9 The influence of charge per delay on the predicted ground
vibration velocity for pattern-Ⅲ,Ⅳ(PVS) 89
Table 5.10 The influence of charge per delay on the predicted ground
vibration velocity for pattern-Ⅴ,Ⅵ(PVS) 90
Table 5.11 The influence of charge per delay on the predicted ground
vibration velocity for pattern-Ⅶ,Ⅷ(PVS) 90
Table 5.12 The influence of charge per delay on the predicted ground
vibration velocity for different patterns(PVS)-0.125kg 92
Table 5.13 The influence of charge per delay on the predicted ground
vibration velocity for different patterns(PVS)-0.5kg 93
Table 5.14 The influence of charge per delay on the predicted ground
vibration velocity for different patterns(PVS)-1.6kg 94
Table 5.15 Prediction equation of blasting vibration for part tamping peak particle velocity(PPV) 96
Table 5.16 Prediction equation of blasting vibration for full tamping
peak particle velocity(PPV) 98
Table 5.17 The influence of charge per delay on the predicted ground
vibration velocity for different tamping method-Ⅰ(PPV) 101
Table 5.18 The influence of charge per delay on the predicted ground
vibration velocity for different tamping method-Ⅱ(PPV) 101
Table 5.19 The influence of charge per delay on the predicted ground
vibration velocity for different tamping method-Ⅲ(PPV) 102
Table 5.20 Prediction equation of blasting vibration for part tamping
peak vector sum(PVS) 105
Table 5.21 Prediction equation of blasting vibration for full tamping
peak vector sum(PVS) 107
Table 5.22 The influence of charge per delay on the predicted ground
vibration velocity for different tamping method-Ⅰ(PVS) 110
Table 5.23 The influence of charge per delay on the predicted ground
vibration velocity for different tamping method-Ⅱ(PVS) 110
Table 5.24 The influence of charge per delay on the predicted ground
vibration velocity for different tamping method-Ⅲ(PVS) 111
< List of Figures >
Figure 2.1 Phase difference of displacement velocity and acceleration 5
Figure 2.2 Progressive characteristic of elastic wave in the ground 7
Figure 2.3 Wave propagation and particle motion 8
Figure 2.4 Vibration element 9
Figure 2.5 Blasting vibration compared to nuclear and earthquake motion 13
Figure 3.1 Site map of study area 23
Figure 3.2 Geology genealogy of study area 24
Figure 3.3 Blasting pattern 30～33
Figure 3.4 Measurements of study area 36～38
Figure 3.5 Vivration time history of measurement result 39～42
Figure 4.1 Measurements data 43～45
Figure 4.2 Measurements data of all pattern 46
Figure 4.3 Square root scaled distance of pattern-Ⅰ(PPV) 48
Figure 4.4 Cube root scaled distance of pattern-Ⅰ(PPV) 48
Figure 4.5 Square root scaled distance of pattern-Ⅱ(PPV) 50
Figure 4.6 Cube root scaled distance of pattern-Ⅱ(PPV) 50
Figure 4.7 Square root scaled distance of pattern-Ⅲ(PPV) 52
Figure 4.8 Cube root scaled distance of pattern-Ⅲ(PPV) 52
Figure 4.9 Square root scaled distance of pattern-Ⅳ(PPV) 54
Figure 4.10 Cube root scaled distance of pattern-Ⅳ(PPV) 54
Figure 4.11 Square root scaled distance of pattern-Ⅴ(PPV) 56
Figure 4.12 Cube root scaled distance of pattern-Ⅴ(PPV) 56
Figure 4.13 Square root scaled distance of pattern-Ⅵ(PPV) 58
Figure 4.14 Cube root scaled distance of pattern-Ⅵ(PPV) 58
Figure 4.15 Square root scaled distance of pattern-Ⅶ(PPV) 60
Figure 4.16 Cube root scaled distance of pattern-Ⅶ(PPV) 60
Figure 4.17 Square root scaled distance of pattern-Ⅷ(PPV) 62
Figure 4.18 Cube root scaled distance of pattern-Ⅷ(PPV) 62
Figure 4.19 Square root scaled distance of pattern-Ⅰ(PVS) 64
Figure 4.20 Cube root scaled distance of pattern-Ⅰ(PVS) 64
Figure 4.21 Square root scaled distance of pattern-Ⅱ(PVS) 66
Figure 4.22 Cube root scaled distance of pattern-Ⅱ(PVS) 66
Figure 4.23 Square root scaled distance of pattern-Ⅲ(PVS) 68
Figure 4.24 Cube root scaled distance of pattern-Ⅲ(PVS) 68
Figure 4.25 Square root scaled distance of pattern-Ⅳ(PVS) 70
Figure 4.26 Cube root scaled distance of pattern-Ⅳ(PVS) 70
Figure 4.27 Square root scaled distance of pattern-Ⅴ(PVS) 72
Figure 4.28 Cube root scaled distance of pattern-Ⅴ(PVS) 72
Figure 4.29 Square root scaled distance of pattern-Ⅵ(PVS) 74
Figure 4.30 Cube root scaled distance of pattern-Ⅵ(PVS) 74
Figure 4.31 Square root scaled distance of pattern-Ⅶ(PVS) 76
Figure 4.32 Cube root scaled distance of pattern-Ⅶ(PVS) 76
Figure 4.33 Square root scaled distance of pattern-Ⅷ(PVS) 78
Figure 4.34 Cube root scaled distance of pattern-Ⅷ(PVS) 78
Figure 5.1 Relationship between predicted ground vibration velocity and distance for patterns(PPV) 81
Figure 5.2 Relationship between predicted ground vibration velocity and distance for patterns(PVS) 88
Figure 5.3 Square root scaled distance of part tamping(PPV) 97
Figure 5.4 Cube root scaled distance of part tamping(PPV) 97
Figure 5.5 Square root scaled distance of full tamping(PPV) 99
Figure 5.6 Cube root scaled distance of full tamping(PPV) 99
Figure 5.7 Relationship between predicted ground vibration velocity and distance for different tamping patterns(PPV) 103
Figure 5.8 Relationship between percentage of attenuation and distance for different tamping patterns(PPV) 104
Figure 5.9 Square root scaled distance of part tamping(PVS) 106
Figure 5.10 Cube root scaled distance of part tamping(PVS) 106
Figure 5.11 Square root scaled distance of full tamping(PVS) 108
Figure 5.12 Cube root scaled distance of full tamping(PVS) 108
Figure 5.13 Relationship between predicted ground vibration velocity and distance for different tamping methods(PVS) 112
Figure 5.14 Relationship between percentage of attenuation and distance for different tamping methods(PVS) 113
Figure 5.15 Area of after blasting 114
Figure 5.16 Area of after cleaning slope 115～116
- Degree
- Doctor
- Publisher
- 조선대학교 에너지자원공학과
- Citation
- 장호민. (2014). 석영반암 지역을 대상으로 한 발파진동 제어공법에 관한 연구.
- Type
- Dissertation
- URI
- https://oak.chosun.ac.kr/handle/2020.oak/12175
http://chosun.dcollection.net/common/orgView/200000264335
- Appears in Collections:
- General Graduate School > 4. Theses(Ph.D)
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