KR100294819B1 - Blast method vibration control of multistage for blast perpendicular hole and tunnel - Google Patents
Blast method vibration control of multistage for blast perpendicular hole and tunnel Download PDFInfo
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- KR100294819B1 KR100294819B1 KR1019990006193A KR19990006193A KR100294819B1 KR 100294819 B1 KR100294819 B1 KR 100294819B1 KR 1019990006193 A KR1019990006193 A KR 1019990006193A KR 19990006193 A KR19990006193 A KR 19990006193A KR 100294819 B1 KR100294819 B1 KR 100294819B1
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- hole
- blasting
- holes
- cut
- tunnel
- Prior art date
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- 238000000034 method Methods 0.000 title claims abstract description 42
- 238000005422 blasting Methods 0.000 claims abstract description 97
- 239000002360 explosive Substances 0.000 claims abstract description 27
- 238000010276 construction Methods 0.000 claims abstract description 13
- 238000005553 drilling Methods 0.000 claims abstract description 13
- 238000005474 detonation Methods 0.000 claims abstract description 9
- 238000009412 basement excavation Methods 0.000 claims description 17
- 230000000747 cardiac effect Effects 0.000 claims description 10
- 230000003111 delayed effect Effects 0.000 claims description 7
- 208000006029 Cardiomegaly Diseases 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 6
- 238000005273 aeration Methods 0.000 claims description 5
- 230000003416 augmentation Effects 0.000 claims description 3
- 238000004880 explosion Methods 0.000 claims description 3
- 230000037452 priming Effects 0.000 abstract 3
- 238000011068 loading method Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 3
- 239000004744 fabric Substances 0.000 description 3
- 239000011435 rock Substances 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 210000001308 heart ventricle Anatomy 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 208000010125 myocardial infarction Diseases 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/006—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries by making use of blasting methods
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D1/00—Sinking shafts
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D1/00—Blasting methods or apparatus, e.g. loading or tamping
- F42D1/04—Arrangements for ignition
- F42D1/06—Relative timing of multiple charges
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D1/00—Blasting methods or apparatus, e.g. loading or tamping
- F42D1/08—Tamping methods; Methods for loading boreholes with explosives; Apparatus therefor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D3/00—Particular applications of blasting techniques
- F42D3/04—Particular applications of blasting techniques for rock blasting
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
Abstract
Description
본 발명은 터널 및 수직구 발파공사의 다단장약에 의한 진동제어 발파방법에 관한 것으로서, 보다 상세하게는 터널 및 수직구 발파공사의 단일 자유면 발파시 다단 장약에 의한 진동제어 발파공법에 관한 것으로 특히 터널 및 수직구 발파 공사시 심발공과 심발확대공에서 가장 크게 발생되는 지반 진동과 소음을 경감시킬 수 있도록 한 것이다.The present invention relates to a vibration control blasting method by a multi-stage contract of tunnel and vertical sphere blasting work, and more particularly, to a vibration control blasting method by a multi-stage contract when blasting single free surface of tunnel and vertical sphere blasting construction. It is designed to reduce the ground vibration and noise that occur most in deep hole and deep hole enlargement during tunnel and vertical hole blasting construction.
주지하다시피 터널 및 수직구의 암반 굴착 방법은 굴착 면적의 크기, 암반의 상태, 보안 물건과의 거리등에 의해 굴착 방법이 결정된다. 이러한 굴착방법의 기술개선은 발파당 단일 굴착장을 극대화 시키기 위한 심발 발파법과 굴착면의 손상을 방지시키기 위한 조절 발파법 그리고 굴착 발파시 발생되는 지반진동과 소음을 제어하는 방법으로 구분되어 진다.As is well known, the rock excavation method for tunnels and vertical holes is determined by the size of the excavation area, the condition of the rock, and the distance to the security object. The technical improvement of these excavation methods is divided into the heart blasting method to maximize the single drilling site per blasting, the control blasting method to prevent the damage of the drilling surface, and the ground vibration and noise generated during the excavation blasting.
통상 발파에 의한 터널 굴착 방법은 다음과 같은 3단계로 구분되어 실시되는데, 이를 테면 보조심발공, 심발공, 심발확대공 및 확대공, 주변공, 바닥공등을 일정한 깊이로 천공하는 천공단계와, 상기 천공된 공에 폭약과 뇌관을 채워 장전하는 장전단계 및 장전된 뇌관을 결선하여 발파기로 기폭시키는 단계로 이루어진다.Tunnel excavation method by blasting is generally divided into three stages, such as auxiliary drilling hole, deep hole hole, deep hole expansion hole and enlarged hole, peripheral hole, floor hole, etc. The loading step includes loading the explosives and the primer into the perforated balls and connecting the loaded primers to detonate them with a blasting device.
기폭에 사용되는 뇌관들로서는 순발 또는 미리세컨드(M.S), 데시세컨드(D.S)의 시차로 기폭되어지는 전기 또는 비전기뇌관을 사용하며, 뇌관의 단차는 20~500㎳시차를 유지하여 39~41 단계로 발파하거나, 전기뇌관의 경우에는 다단 발파기를 이용하여 단계를 더욱 세분하여 발파한다.The detonators used for detonation use electric or non-electric detonators, which are detonated by the parallax of instant or pre-second (MS) and deci- sion (DS). Blasting in stages, or in the case of electric primer blast by subdividing the stage using a multi-stage blasting machine.
그런데 이러한 종래의 발파방법은 장전 방법에 있어 천공된 구멍의 공저에서부터 장전에 필요한 폭약량을 연속적으로 채우고 한 개의 뇌관을 같이 장전하여 뇌관을 기폭시키므로서 단일 뇌관에 의해 폭발되는 폭약량이 많아 발파 진동이 크게 발생되는 문제가 있다.By the way, the conventional blasting method in the loading method from the bottom of the perforated hole to continuously fill the explosive dose required for loading, and by loading one primer together to detonate the primer, there is a lot of explosive charge exploded by a single primer, the blasting vibration There is a big problem.
다시 말해 터널 굴착을 위한 발파가 진행되는 과정에서 중요한 단계는 천공위치에 따라 심발공과 심발확대공이 발파되는 단계와 확대공, 바닥공, 주변공이 순차적으로 발파되는 단계가 있다.In other words, the important steps in the process of blasting for tunnel excavation include the step of blasting the cardiac hole and the cardiac augmentation hole and the step of blasting the enlarged hole, the bottom hole, and the surrounding hole sequentially according to the drilling position.
그 중에서 발파 진동이 가장 크게 발생되는 심발공과 심발확대공의 발파단계가 전체적인 발파의 성공 여부를 좌우하는 가장 중요한 요소로써, 이 심발 발파작업시 발생되는 초기 발파 진동이 전체 발파 작업에서 가장 크게 발생되어 공해가 발생한다.Among them, the blasting stages of the blasting heart and the enlarged hole are the most important factors that determine the success of the blasting, and the initial blasting vibration generated during the blasting operation is the largest in all the blasting operations. Pollution occurs.
그러나 종래의 기술로는 이를 해결할 수 없고 단순히 공당 장약량을 적게하기 위하여 천공장을 줄이는 방법을 이용하거나, 비 발파 공법으로 굴착 방법을 변경함으로써 그에 따르는 공사기간의 지연과 경제적인 손실이 발생하는 문제가 있다.However, the conventional technology cannot solve this problem, and there is a problem of delaying the construction period and economic loss by using a method of reducing the fabrication factory to simply reduce the amount of pledged amount or changing the excavation method by the non-blasting method. have.
본 발명은 상기와 같은 종래 기술의 제반 문제점을 해소하기 위하여 안출한 것으로, 터널 및 수직구 발파시 발파 진동이 크게 발생되는 심발공과 심발확대공에 다단으로 구분 장약하여 발파하므로서 터널 굴착장을 크게 하면서도 발파 진동을 제어할 수 있어 터널굴착작업의 능률을 향상시킬 수 있도록 함을 제1목적으로 하는 것이고, 제2목적은 발파시에 발생하는 진동을 제어하여 시공 지역의 피해를 크게 줄일 수 있도록 한 것이며, 제3목적은 최소한 폭약으로 최대의 발파효과를 얻을 수 있도록 한 터널 및 수직구 발파공사의 다단장약에 의한 진동제어 발파방법을 제공한다.The present invention has been made in order to solve all the problems of the prior art as described above, while increasing the tunnel rig by blasting by dividing into multiple stages in the deep hole and the deep expansion hole that the blasting vibration is greatly generated when the tunnel and vertical sphere blasting The first purpose is to control the blasting vibration so that the efficiency of tunnel excavation work can be improved, and the second purpose is to control the vibration occurring during the blasting to greatly reduce the damage in the construction area. Therefore, the third object of the present invention is to provide a vibration control blasting method by using a multi-stage contract of tunnel and vertical blasting construction to obtain the maximum blasting effect with at least explosives.
이러한 목적 달성을 위하여 본 발명은 일자유면 터널 또는 수직구의 굴착을 위한 쐐기형 심발(V-CUT), 피라밋형 심발(PYRAMID-CUT), 부채형 심발(FAN-CUT), 수직천공형 심발(NO-CUT)의 발파 방법에 있어서, 보조심발공, 심발공, 심발확대공, 확대공, 바닥공, 주변공을 소정의 깊이로 천공하는 단계와; 보조심발공, 심발공, 심발확대공은 다단으로 분할하여 역기폭으로 장전하고, 확대공, 바닥공, 주변공은 단일단으로 소정의 폭약과 순발 또는 지발뇌관을 역기폭으로 장전하는 단계와; 장전된 폭약이 지발뇌관의 기폭순서에 따라 폭발될 때 인접공이나 하부에 정전된 폭약이 제발되지 않도록 전색하는 단계와; 보조심발공, 심발공, 심발확대공이 다단으로 분할한 상태에서 역기폭으로 순차적인 발파가 진행되어 선 발파된 공에 의해 형성된 자유면을 이용하여 후 발파공이 용이하게 발파되어 자유면을 형성시킨 후 확대공, 바닥공, 주변공이 순차적으로 발파되도록 함을 특징으로 하는 터널 및 수직구 발파공사의 다단장약에 의한 진동제어 발파방법을 제공한다.이하에서는 이러한 목적 달성을 위한 본 발명의 바람직한 실시예를 첨부된 도면에 따라 상세히 설명하면 다음과 같다.In order to achieve the above object, the present invention is a wedge-shaped core (V-CUT), pyramid-shaped core (PYRAMID-CUT), fan-shaped core (FAN-CUT), vertical perforated core (NO) A blasting method of a CUT, comprising the steps of: drilling an auxiliary heart hole, a heart hole, a heart enlargement hole, an enlarged hole, a bottom hole, and a peripheral hole to a predetermined depth; The secondary cardiac ball, the cardiac ball, the cardiac augmentation ball are divided into multiple stages to load the counter-explosives, and the enlarged ball, the bottom hole, and the surrounding holes are loaded into the single stage with a predetermined explosive and a sudden expulsion or delayed primer; When the loaded explosive is exploded in accordance with the detonation order of the delayed primer, colorizing the charged explosive to the adjacent hole or the lower part of the explosive charge; In the state where the auxiliary heart hole, the heart hole, and the enlarged heart hole are divided into multiple stages, sequential blasting proceeds with back-aeration and subsequent blasting is easily blasted using the free surface formed by the ball blasted to form a free surface. It provides a vibration control blasting method according to the multi-stage contract of the tunnel and vertical sphere blasting construction characterized in that the expansion hole, the bottom hole, the peripheral hole blasting sequentially. Hereinafter, a preferred embodiment of the present invention for achieving this object When described in detail according to the accompanying drawings as follows.
도 1 의 (a)는 본 발명을 쐐기형 심발 발파에 적용한 천공 배치도의 정면도이고,Figure 1 (a) is a front view of a perforation layout applied the present invention to the wedge-shaped heart blasting,
(b)는 상기 도 1(a)의 A - A'선의 개략 평면도이다.(b) is a schematic plan view of the AA 'line | wire of (a).
도 2 의 (a)는 상기 도 1(a)의 내부를 전개하여 보인 개략 상세도이고,FIG. 2 (a) is a schematic detailed view showing the inside of FIG. 1 (a),
(b)는 상기 도 2(a)의 개략 평면도이며,(b) is a schematic plan view of FIG. 2 (a),
(c)는 본 고안에 장전된 뇌관과 폭약이 기폭되어 암반 굴착이 진행되는 순서를 도시한 구성도이다.(c) is a block diagram showing the sequence of rock excavation proceeded by detonation of the primer and explosive loaded in the present invention.
도 3 의 (a)(b)는 본 발명을 부채형 심발발파(Fan-cut)에 적용한 상태의 개략 정면도 및 평면도.Figure 3 (a) (b) is a schematic front view and a plan view of a state in which the present invention is applied to a fan-shaped heart blast (Fan-cut).
도 4 의 (a)(b)는 본 발명을 수직천공발파(No-cut)에 적용한 상태의 개략 정면도 및 평면도.도 5 의 (a)(b)는 본 발명을 피라밋 심발발파(Pyramid-cut)에 적용한 상태의정면도 및 단면도.Figure 4 (a) (b) is a schematic front view and a plan view of the state in which the present invention is applied to a vertical puncture blast (No-cut). Figure (a) (b) is a pyramid heart blast (Pyramid-) Front view and sectional view of the state applied to the cut).
＜도면의 주요 부호에 대한 부호의 설명＞<Description of the code | symbol about the main code | symbol of drawing>
1: 보조 심발공 2: 심발공1: assisted ventricle 2: heart ventricle
3: 심발 확대공 4: 확대공5: 바닥공 6: 주변공3: heart enlarger 4: enlargement 5: bottom hole 6: periphery
본 발명에 적용된 터널 및 수직구 발파공사의 다단장약에 의한 진동제어 발파방법은 도 1 내지 도 5 에 도시된 바와 같이 보조심발공(1), 심발공(2), 심발확대공(3), 확대공(4), 바닥공(5), 주변공(6)을 소정의 깊이로 천공하는 단계와; 보조심발공(1), 심발공(2), 심발확대공(3)은 다단으로 분할하여 역기폭(공저에 뇌관을 배치하여 기폭)으로 장전하고, 확대공(4), 바닥공(5), 주변공(6)은 단일단으로 소정의 폭약과 순발(점화되는 시점에서 즉시 폭발) 또는 지발(공저에 뇌관을 배치하여 기폭)뇌관을 역기폭으로 장전하는 단계와; 장전된 폭약이 지발뇌관의 기폭순서에 따라 폭발될 때 인접공이나 하부에 정전된 폭약이 제발(동시에 폭발되는 상태)되지 않도록 전색(7)하는 단계와; 보조심발공(1), 심발공(2), 심발확대공(3)이 다단으로 분할한 상태에서 역기폭으로 순차적인 발파가 진행되어 선 발파된 공에 의해 형성된 자유면을 이용하여 후 발파공이 용이하게 발파되어 자유면을 형성시킨 후 확대공(4), 바닥공(5), 주변공(6)이 순차적으로 발파되도록 함을 특징으로 하는 것이다.상기 폭약에 뇌관을 장전할때 구멍의 끝단 즉, 공저에 위치하는 것을 역기폭이라 하고, 구멍의 중간에 뇌관이 위치하는 것을 증기폭이라 하며, 구멍의 입구쪽에 뇌관이 위치하는 것을 정기폭이라 한다.Vibration control blasting method according to the multi-stage of the tunnel and vertical sphere blasting construction applied to the present invention is shown in Figures 1 to 5 auxiliary heart hole (1), heart hole (2), deep heart expansion hole (3), Drilling the enlarged hole 4, the bottom hole 5, and the peripheral hole 6 to a predetermined depth; Secondary heart hole (1), heart hole (2), heart enlargement hole (3) is divided into multiple stages and loaded with backlash (detonation by placing a primer at the bottom), enlargement hole (4), bottom hole (5) The periphery hole (6) is a single step of a predetermined explosive and instantaneous (explodes immediately at the point of ignition) or delay (detonation by placing a primer at the bottom of the detonation) loading the detonator with a back aeration; (7) making the charged explosives explode in accordance with the detonation order of the delayed primers so that the explosives charged in the adjacent hole or the lower part are not (exploded at the same time); In the state where the auxiliary heart hole (1), the heart hole (2), and the heart expansion hole (3) are divided into multiple stages, sequential blasting proceeds with the counter-aeration, and then the blasting hole is formed by using the free surface formed by the ball blasted. It is characterized in that the blasting is easily blasted to form a free surface and then the expansion hole (4), the bottom hole (5), the peripheral hole (6) are sequentially blasted. The base located at the bottom of the hole is called the counter-aeration, and the position of the primer in the middle of the hole is called the vapor width, and the position of the primer at the entrance of the hole is called the regular width.
본 발명에서의 상기 다단 분할 장약 방법은 천공구멍의 전장을 소정의 길이로 다단으로 분할하여 장전한 폭약의 중심에서 최초자유면 또는 선행자유면까지의 최소 저항선이 50cm~200cm인 것과 장약부분과 장약부분간의 전색장이 최소 30cm이상으로서 먼저 기폭되어진 폭약의 폭발시 하부에 장전된 폭약이 기폭되어지지 않도록 전색하는 것을 특징으로 하는 것으로, 이의 구체적인 설명은 다음과 같다.먼저, 도 1, 2 는 쐐기형 심발 발파에 적용한 천공 배치도의 각 구성도를 나타낸 것이며, 본 발명은 도 3 내지 도 5 에 나타낸 바와 같이 다른 실시예에도 적용이 가능함은 물론이다.즉, 도 1 내지 도 5 에 나타낸 바와 같이 본 발명은 쐐기형(V-CUT), 피라밋형(PYRAMID-CUT), 부채형(FAN-CUT), 수직천공형(NO-CUT), 심발 발파 방법에 있어서 천공방법은 종래의 형태와 같이 천공하고, 보조심발공(1)과 심발공(2), 심발확대공(3)을 다단으로 구분하여 지발뇌관과 폭약을 장전하고 기폭하면 발파에 의한 지반 진동이 현저하게 감소된다.In the multi-stage split charging method of the present invention, the minimum resistance line from the center of the explosive loaded by dividing the full length of the drilling hole into a multistage in a predetermined length is 50 cm to 200 cm, and the charge portion and the charge It is characterized in that the full color length between the parts is at least 30 cm, so that the color of the explosives loaded at the lower part does not detonate during the explosion of the explosives, which are first exploded, and the detailed description thereof is as follows. First, FIGS. 1 and 2 are wedge-shaped. Each configuration diagram of the perforation layout applied to the heart blasting is shown, and the present invention can be applied to other embodiments as shown in FIGS. 3 to 5. That is, the present invention as shown in FIGS. In the silver wedge type (V-CUT), pyramid type (PYRAMID-CUT), fan type (FAN-CUT), vertical drilling type (NO-CUT), and heart blasting method, the drilling method is the same as the conventional type. And, when mounting the auxiliary Gheshm ball 1 and the ball Gheshm 2, Gheshm-up hole (3), separated by a multi-stage Ji primer and explosive detonator and the ground vibration by blasting is remarkably reduced.
도면에서 a 는 장약구간이고, b 는 전색구간을 나타내고 있다.In the figure, a represents a long section and b represents a full color section.
이것을 기준으로 지반 진동 저감효과는 단일자유면 발파시 장약량을 정하는 발파기본식인 하우저공식(L=CW3)(L:장약량, C:발파상수, W:최소저항선거리)과 발파 진동식()n(V:지반진동값, K:발파진동상수, D:발파원에서 측정지점까지의 직선거리, W:지발당 장약량, b:근거리·원거리에 따른 상수, n:발파진동 감쇠지수)에 의하여 검증되어진다.Based on this, the ground vibration reduction effect is based on Hauser's formula (L = CW 3 ) (L: Dose, C: Blasting Constant, W: Minimum Resistance Line Distance) and Blasting Vibration ( ) n (V: ground vibration value, K: blast vibration constant, D: linear distance from blast source to measuring point, W: dose per delay, b: constant according to near distance and distance, n: blast vibration damping index) Is verified.
상기의 식에 의하여 산출한 표준 장약량은 최소저항선 거리의 3승에 비례하고 발파 진동은 장약량의 자승근 또는 삼승근에 비례하므로 최소저항선 거리를 적게 하면 장약량이 적어지고 발파진동이 감소하게 된다.The standard dose calculated by the above formula is proportional to the third power of the minimum resistance line distance, and the blasting vibration is proportional to the square root or the triangular root of the dose, so if the minimum resistance line distance is reduced, the dose is reduced and the blasting vibration is reduced.
본 발명은 단일 천공정에 다단으로 분산시켜 장약하고 장전한 폭약을 순차적으로 기폭 즉, 도 2(a)의 ⓐ⇒ⓑ⇒ⓒ⇒ⓓ⇒ⓔ 및 도 2(c)의 ①⇒②⇒③⇒④의 순서와 같이 기폭되게 하여 발파진동을 감소시키고 발파당 단일 굴착을 크게 할 수 있으므로 작업능률을 향상시킬 수 있는 터널굴착 발파방법이다.The present invention sequentially detonates the charged and loaded explosives by dispersing in multiple stages in a single cloth process, that is, ⇒ ⇒ ⇒ ⇒ ⇒ ⇒ ⇒ and Figure 2 (c) ① ⇒ ② ⇒ ③ ⇒ in Figure 2 (a) It is a tunnel blasting blasting method that can improve the work efficiency because it can reduce the blasting vibration and increase the single excavation per blasting by amplifying as in the order of ④.
이와 같이 최소저항선을 적게 하면서도 발파당 굴진장을 크게 할 수 있는 터널굴착방법은 현재까지 시전되지 않은 새로운 발파 방법을 제시하는 것이다. 또한 터널굴착 발파방법인 쐐기형, 피라밋형, 부채형, 수직천공형 심발공에 본 발명에 의한 방법을 적용하여 다단 장약을 하고 순발 또는 지발뇌관으로 기폭시켜 발파하면 아래표에서 나타낸바와 같이 종래의 발파 방법에 비하여 현저한 진동저감 효과가 발생한다.(실시예 1)As such, the tunnel excavation method that can increase the excavation length per blast while reducing the minimum resistance line suggests a new blasting method that has not been cast to date. In addition, by applying the method according to the present invention to the tunnel drilling blasting method, wedge-shaped, pyramid-shaped, fan-shaped, vertically-punched deep-ball hole, multi-stage charge and detonate with a quick or delayed primer, as shown in the table below. Compared to the blasting method, a significant vibration reduction effect occurs. (Example 1)
예를 들어 서울 지하철 8~11공구 터널 발파 작업의 시공 사례를 근거로 발파작업조건이 같은 경우 종래의 발파방법을 본 발명의 터널 및 수직구 발파공사의 단일자유면 발파시 다단장약에 의한 진동제어 공법으로 적용할때 공당 장약량과 지발당 장약량, 발파진동값을 산출하여 비교하면 다음과 같다.For example, if the blasting working conditions are the same based on the construction example of the tunnel blasting work of the Seoul subway section 8 ~ 11, the conventional blasting method uses vibration control by multi-stage contract when blasting the single free surface of the tunnel and vertical blasting work of the present invention. When it is applied by the method, it is as follows when the amount of charges per dose, the amount per delay and the blasting vibration value are calculated and compared.
발파 작업 조건: 1. 터널 직경: Φ7mBlasting Working Condition: 1. Tunnel Diameter: Φ7m
2. 굴착 단면적: 26M22. Excavation cross section: 26M2
3. 단일 천공장: 1,400 m/m3. Single cloth factory: 1,400 m / m
4. 단일 굴진장: 1,3004. Single excavation site: 1,300
5. 보안 물건과의 거리: 약 35m5. Distance to security items: about 35m
6. 발파 진동식: V=62.5(SD)-1.5 6. Blasting vibration type: V = 62.5 (SD) -1.5
7. 지발당 장약량: 최대 1.1kg7. Loading capacity per delay: up to 1.1kg
8. 하우저 공식: L= CW3 8. Hauser formula: L = CW 3
상기 조건에서 표준발파의 경우 종래의 방법과 본 발명에 의한 다단 장약방법을 적용하여 천공장에 따른 심발공(1)과 심발확대공(3)의 공당, 지발당 장약량과 발파 진동값의 비교.＜심발공＞＜심발 확대공＞(실시예 2)Under the above conditions, in case of standard blasting, the conventional method and the multi-stage charging method according to the present invention were applied to compare the dosage and the blast vibration value of the vaccinated, delayed blast of the heart blast hole (1) and the deep blast hole (3) according to the mill. <Heart attack ball> <Heart enlargement> (Example 2)
도심발파에서 발파조건이 같은 경우 쐐기형 심발 발파에 의한 터널발파시 종래의 방법과 본 발명에 의한 다단 장약 방법을 비교하면 다음과 같다.When the blasting conditions are the same in urban blasting, the conventional method and the multi-stage charging method according to the present invention when tunnel blasting by wedge-shaped blasting are compared as follows.
본 발명은 터널발파시 단일굴진장에 따른 천공장의 길이에 따라 심발공(1)과 심발확대공(3)을 소정의 길이로 다단분할하여 장전하므로서 공당, 지발당 장약량을 적게 하여 발파진동을 현저히 감소시키므로서 발파진동 한계기준값 이내에서 발파작업이 진행될 수 있게 한다.According to the present invention, the blasting vibration can be reduced by reducing the amount of pitting sugar and the delay per minute by reloading the cardiac hole (1) and the cardiac magnification hole (3) into a predetermined length according to the length of the fabric mill according to the single excavation tunnel. Significantly reduced, the blasting operation can be carried out within the blast vibration limit value.
이상과 같이 본 발명은 터널발파 작업시 종래의 경사천공 발파공법을 이용하여 발파진동이 가장 크게 발생되는 심발공과 심발확대공의 최소저항선 거리를 적게 하면서도 발파당 굴진장을 크게 할 수 있는 발파공법은 이론적으로는 정립되어 있으나 현재까지 실시된 사례가 없는 최초의 발파공법인 것이다.As described above, the present invention provides a blasting method which can increase the excavation length per blast while reducing the minimum resistance line distance between the deepest hole and the deepest hole in which the blasting vibration is most generated by using the conventional inclined perforating blasting method. Theoretically, it is the first blasting method that has been established but has not been practiced to date.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100438028B1 (en) * | 2001-07-11 | 2004-06-30 | 조영동 | A tunnel blasting method favorable to the environment,which utilizes pre-splitting and an upper center cut |
| CN110440649A (en) * | 2019-08-09 | 2019-11-12 | 中铁隧道局集团有限公司 | Hydraulic drill ring drilling large cross-section tunnel steel for shot structure and blasting method |
| CN110793409A (en) * | 2019-11-11 | 2020-02-14 | 中南大学 | Bundle-shaped blast hole cut blasting method for reducing vibration by utilizing random delay error of common detonator |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| KR100323151B1 (en) * | 1999-12-31 | 2002-02-06 | 조영동 | Tunnel blasting method with large empty holes and pre-splitting of circular cut |
| KR100403385B1 (en) * | 2001-10-09 | 2003-11-01 | 배상훈 | Method of excavating tunnel without exceeding boundary |
| KR100445098B1 (en) * | 2001-11-02 | 2004-08-21 | 주식회사 지오제니컨설턴트 | method for blasting center-cut of tunnel |
| KR20020024108A (en) * | 2002-01-25 | 2002-03-29 | 이승길 | The system of blasting the half elliptical on the center cut for Tunnel. |
| KR100507303B1 (en) * | 2002-10-04 | 2005-08-09 | 지케이건설(주) | Vibration-controlled safe blasting method using detonating fuses |
| KR100866105B1 (en) * | 2007-03-20 | 2008-10-31 | 정영문 | blast construction working method for a tunnel |
| KR100901786B1 (en) * | 2007-10-05 | 2009-06-11 | 삼성물산 주식회사 | Digging method for perpendicular hall and container for compacton materials used the same |
| KR20160130584A (en) | 2015-05-04 | 2016-11-14 | 김귀순 | Deck charge blasting method |
| CN111894595B (en) * | 2020-08-11 | 2021-07-16 | 昆明理工大学 | Pressure relief prevention and control method for surrounding rock burst of side wall of vertical shaft |
| CN114791246A (en) * | 2022-04-02 | 2022-07-26 | 中铁十六局集团路桥工程有限公司 | Blasting construction method for existing small-clear-distance close-connection tunnel |
| CN115523809A (en) * | 2022-09-30 | 2022-12-27 | 中交路桥建设有限公司 | Weak weathering siltstone smooth blasting blast hole structure, detonating fuse connection structure and method |
-
1999
- 1999-02-24 KR KR1019990006193A patent/KR100294819B1/en not_active IP Right Cessation
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100438028B1 (en) * | 2001-07-11 | 2004-06-30 | 조영동 | A tunnel blasting method favorable to the environment,which utilizes pre-splitting and an upper center cut |
| CN110440649A (en) * | 2019-08-09 | 2019-11-12 | 中铁隧道局集团有限公司 | Hydraulic drill ring drilling large cross-section tunnel steel for shot structure and blasting method |
| CN110793409A (en) * | 2019-11-11 | 2020-02-14 | 中南大学 | Bundle-shaped blast hole cut blasting method for reducing vibration by utilizing random delay error of common detonator |
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