JP2000221000A - Method for safely blasting landform having plural free surfaces - Google Patents
Method for safely blasting landform having plural free surfacesInfo
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- JP2000221000A JP2000221000A JP11023986A JP2398699A JP2000221000A JP 2000221000 A JP2000221000 A JP 2000221000A JP 11023986 A JP11023986 A JP 11023986A JP 2398699 A JP2398699 A JP 2398699A JP 2000221000 A JP2000221000 A JP 2000221000A
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- Prior art keywords
- length
- charge
- terrain
- minimum resistance
- free surface
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Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、自由面すなわち
岩石等破壊される物体が外界の空気または水と接してい
る面が複数存在する地形を、一点集中装薬により、また
は、棒状装薬により、安全かつ効率よく爆破する方法に
関する。BACKGROUND OF THE INVENTION The present invention relates to a terrain having a plurality of free surfaces, that is, a surface where an object to be destroyed such as a rock is in contact with the outside air or water, by a single point charge or by a rod charge. On how to blast safely and efficiently.
【０００２】[0002]
【従来の技術】単一の自由面Ｇ1を有する地形を一点集
中装薬方式によって爆破する方法は、従来、ハウザーの
公式Ｌ＝ｃＷ3 として周知であり、その公式は、図１で
示すように、単一自由面をＧ１、一点集中装薬量をＬ、
一点集中装薬量Ｌから単一自由面Ｇ１へ向けた最短距離
を最小抵抗線長Ｗ1 、破壊半径をＤとし、かつ、Ｗ1 ＝
Ｄとした場合に、その装薬量Ｌによって破壊される岩盤
体積Ｖは、円錐の体積を求める公式を応用して、Ｖ＝
（１／３）πＤ2 Ｗ1 ＝Ｗ1 3となり、従って、装薬量Ｌ
は、発破係数ｃの制約下において破壊岩盤体積Ｗ1 3と比
例することを意味する。そして、経験則上、発破係数ｃ
は０．２５〜０．４５の範囲内で安全とし、その範囲を
超えた装薬量Ｌは飛石等が生じて危険である、とされて
いる。How to blow the Related Art A single free surface single point concentrated charge scheme terrain with G1 is conventionally well known as a formula L = cW 3 of Hauser, the formula is as shown in Figure 1 , G1 for a single free surface, L for one point concentrated charge,
The shortest distance from the one point concentrated charge amount L to the single free surface G1 is the minimum resistance wire length W 1 , the breaking radius is D, and W 1 =
When D is used, the bedrock volume V destroyed by the charge amount L is obtained by applying the formula for determining the volume of a cone to V =
(1/3) πD 2 W 1 = W 1 3 next, therefore, Sokusuriryou L
Means that is proportional to the fracture rock volume W 1 3 in restriction of a blasting coefficient c. Then, as a rule of thumb, the blast coefficient c
Is considered to be safe within the range of 0.25 to 0.45, and the charged amount L exceeding the range is dangerous because stepping stones or the like are generated.
【０００３】単一の自由面Ｇ１を有する地形を棒状装薬
方式によって爆破する方法は、従来、一点集中装薬にお
ける前記ハウザーの式Ｌ＝ｃＷ3 のうち、Ｗ3 をＤＷＨ
乃至Ｗ2 Ｈ（ここでＨはせん孔長）に置き換えた式、す
なわち、Ｌ＝ｃＷ2 Ｈによって算定する（通商産業省立
地公害局編、社団法人全国火薬類保安協会 平成４年１
月発行「火薬類保安教本シリーズ１８・発破の飛石防
止」第２６〜２７頁参照）。[0003] How to blast by bar-like charge type terrain with a single free surface G1 is conventionally of the formula L = cW 3 of the Hauser at a point focused charge, DWH the W 3
To W 2 H (where H is the perforation length), that is, L = cW 2 H (edited by the Ministry of International Trade and Industry, Location Pollution Bureau, National Explosives Security Association, January 1992)
Published in March, "Explosives Safety Education Book Series 18, Prevention of Blasting Stones", pp. 26-27).
【０００４】ところで、前記従来の定説は、最小抵抗線
長Ｗの基点を装薬の中心とする考えを基礎としている
（上記図−１１参照）。しかしながら、この考えは、実
際には、爆破時の安全上、甚だ危険な説であり、それに
代って、本願発明者は、最小抵抗線長Ｗの基点を装薬の
上端とする説を開発し、公知である（日本国特許第２６
０２１４４号、米国特許第５，３７５，５２７号参
照）。[0004] The conventional theory is based on the idea that the base point of the charge is the base point of the minimum resistance wire length W (see Fig. 11). However, this idea is actually a very dangerous theory in terms of safety at the time of blasting. Instead, the present inventor has developed a theory in which the base point of the minimum resistance wire length W is the upper end of the charge. And are known (Japanese Patent No. 26
No. 02144, U.S. Pat. No. 5,375,527).
【０００５】[0005]
【発明が解決しようとする課題】前記従来の爆破理論
は、一点集中装薬及び棒状装薬の双方共、単一の自由面
Ｇ１及び単一の最小抵抗線長Ｗ1 を対象とした原則論で
ある。これに対して、実際上の爆破工事現場では、自由
面が単一とは限らず、複数の自由面を有する地形もあ
り、それらに対しても安全かつ効率のよい作業を迅速確
実に遂行する必要に迫られる。ところが、複数の自由面
を有する地形に対する安全な爆破方法の技術が存在しな
いため、作業が大幅に遅れたり、または、不明確な設定
で強行せざるを得ず、非常に危険乃至人身事故のおそれ
を伴なうのが現状である。[0007] The conventional blasting theory principles theory that one point focused instrumentation agent and bar-like charge both of a single free surface G1 and a single minimum resistance length W 1 of interest It is. On the other hand, in the actual blasting construction site, the free surface is not limited to a single surface, and there are terrains having a plurality of free surfaces. I need to. However, since there is no technology for a safe blasting method for terrain with multiple free surfaces, the work has to be greatly delayed or forced to be carried out with unclear settings, resulting in a very dangerous or personal injury. It is accompanied by the present situation.
【０００６】この発明は、上記の課題を解決して、複数
の自由面を有する地形であっても常に適正安全確実な爆
破工事を施工し得る、一点集中装薬または棒状装薬によ
る爆破方法を開発して提供することを目的とする。SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems, and provides a blasting method using a single-point charge or a rod-like charge that can always perform appropriate and safe blasting work even on a terrain having a plurality of free surfaces. The purpose is to develop and provide.
【０００７】[0007]
【課題を解決するための手段】この発明は、前項の課題
を解決するために、複数の自由面Ｇ１〜Ｇｎを有する地
形の、一点集中装薬による爆破計画において、前記複数
の自由面Ｇ１〜Ｇｎのそれぞれからいずれも直角方向の
地形内部に向けて等距離の交点、すなわち、複数の最小
抵抗線長Ｗ1 〜Ｗn がいずれも等しい長さで交わる交点
に装薬量Ｌを集中装薬すること、破壊半径または装薬間
隔長Ｄを前記複数の最小抵抗線長Ｗ1 〜Ｗn と等しくす
ること、及び、前記装薬量Ｌを破壊岩盤体積Ｗ3 に対し
て発破係数ｃ＝０．２〜０．５の範囲内とすること、を
条件として設計施工する点にある。SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a method for blasting a terrain having a plurality of free surfaces G1 to Gn by a single point charge, wherein the plurality of free surfaces G1 to Gn are used. each equidistant intersection points either toward the inside direction perpendicular terrain from Gn, that is, the charge amount L concentrated charge the intersection plurality least resistance length W 1 of ~Wn is meeting at even equal length one it, to the destruction radius or charge interval length D equal to the plurality least resistance length W 1 of wn, and blasting coefficient c = 0.2 the charge amount L with respect to fracture rock volume W 3 It is in the point of designing and constructing on condition that it is within the range of 0.5.
【０００８】更に、この発明は、前々項の課題を解決す
るために、複数の自由面Ｇ１〜Ｇｎを有する地形の、棒
状装薬による爆破計画において、自由面Ｇ１から直角方
向の内部に向けてせん孔長Ｈを掘削し、そのせん孔長Ｈ
に装薬量Ｌを装てんし、その装薬量Ｌの棒状の端部と前
記自由面Ｇ１との間の最短距離を最小抵抗線長Ｗ1 とす
ること、その装薬量Ｌの棒状装薬とその他の最小抵抗線
長Ｗ2 〜Ｗn との位置関係について、前記その他の自由
面Ｇ２〜Ｇｎのそれぞれからいずれも直角方向の地形内
部に向けて設定する前記その他の最小抵抗線長Ｗ2 〜Ｗ
n が互いに等しく、かつ、前記最小抵抗線長Ｗ1 とも等
しい位置に前記装薬量Ｌによる棒状装薬を設けること、
破壊半径またはせん孔間隔長Ｄを前記複数の最小抵抗線
長Ｗ1 〜Ｗn と等しくすること、及び、前記装薬量Ｌを
破壊岩盤体積ＤＷＨに対して発破係数ｃ＝０．２〜０．
５の範囲内とすること、を条件として設計施工する点に
ある。Further, in order to solve the above-mentioned problems, the present invention is directed to a blast plan using a bar-shaped charge for a terrain having a plurality of free surfaces G1 to Gn, wherein the blast is directed inward at right angles from the free surface G1. Drill a drill hole length H, and drill the hole length H
To load the charge amount L, and the shortest distance between the charge quantity end and the free surface G1 of the rod-like L and least resistance length W 1, bar-like charge of the charge amount L the positional relationship between the other of the minimum resistance length W 2 wn, the other either from the respective free surface G2~Gn set towards the terrain inside the right angle direction the other minimum resistance length W 2 ~ W
n is equal to each other and, the provision of the bar-like charge due to the charge amount L to be equal to a position with the least resistance length W 1,
To destruction radius or perforation spacing length D equal to the plurality least resistance length W 1 of wn, and blasting coefficient c = from .2 to 0 the charge amount L with respect to fracture rock volume DWH.
5 within the range of design and construction.
【０００９】[0009]
【発明の実施の形態】この発明による技術思想の実施形
態は、一点集中装薬によるもの（図２〜図７参照）と、
棒状装薬によるもの（図９〜図１４参照）に大別され
る。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the technical concept according to the present invention include one using a single point charge (see FIGS. 2 to 7).
They are broadly classified into those using rod-shaped charges (see FIGS. 9 to 14).
【００１０】一点集中装薬によるものは、更に、次の実
施形態、すなわち、２自由面を有する地形に対応する技
術（図２）、３自由面を有する地形に対応する技術（図
３）、４自由面を有する地形に対応する技術（図４）、
５自由面を有する地形に対応する技術（図５）、６自由
面を有する地形に対応する技術（図６）、及び、ｎ自由
面を有する地形に対応する技術（図７）として解明され
る。なお、ここに、ｎとは７以上無限大を総称し、図７
で示す実施形態はｎ＝∞、すなわち、球状の地形に対応
する事例を示す。[0010] The one-point-concentration charge further includes the following embodiments, that is, a technology corresponding to a terrain having two free surfaces (Fig. 2), a technology corresponding to a terrain having three free surfaces (Fig. 3), Technology corresponding to terrain with four free surfaces (Fig. 4),
Elucidated as a technology corresponding to a terrain having five free surfaces (FIG. 5), a technology corresponding to a terrain having six free surfaces (FIG. 6), and a technology corresponding to a terrain having n free surfaces (FIG. 7). . Here, n is a general term for infinity of 7 or more and FIG.
The embodiment shown by n indicates an example corresponding to n = ∞, that is, a spherical terrain.
【００１１】棒状装薬によるものは、更に、次の実施形
態、すなわち、２自由面を有する地形に対応する技術
（図９）、３自由面を有する地形に対応する技術（図１
０）、４自由面を有する地形に対応する技術（図１
１）、５自由面を有する地形に対応する技術（図１
２）、６自由面を有する地形に対応する技術（図１
３）、及び、ｎ自由面を有する地形に対応する技術（図
１４）として解明される。なお、ここに、ｎとは、７以
上無限大を総称し、図１４で示す実施形態はｎ＝∞、す
なわち、楕円球状の地形に対応する事例を示す。In the case of using the rod-shaped charge, the following embodiment is applied, that is, a technology corresponding to a terrain having two free surfaces (FIG. 9) and a technology corresponding to a terrain having three free surfaces (FIG. 1).
0) Technology corresponding to terrain with four free surfaces (Fig. 1
1) Technology corresponding to terrain with five free surfaces (Fig. 1
2) Technology for terrain with six free surfaces (Fig. 1)
3) and a technique corresponding to a terrain having n free surfaces (FIG. 14). Here, n is a generic term for 7 or more infinity, and the embodiment shown in FIG. 14 shows a case corresponding to n = ∞, that is, an elliptical spherical terrain.
【００１２】[0012]
【実施例】集中装薬により、２自由面を有する地形に対
応する爆破における安全装薬量の算定は、図２で示すよ
うに、 自由面Ｇ１における最小抵抗線長Ｗ1 ＝４．０ｍ 自由面Ｇ２における最小抵抗線長Ｗ2 ＝４．０ｍ 発破係数ｃ＝０．４５とすれば、装薬量Ｌは、 Ｌ＝ｃＷ3 ＝２８．８ｋｇ[Embodiment] The calculation of the safe charge amount in the blast corresponding to the terrain having two free surfaces by the concentrated charge is performed as shown in FIG. 2, as shown in FIG. 2, the minimum resistance wire length W 1 = 4.0 m on the free surface G1. Assuming that the minimum resistance wire length W 2 = 4.0 m on the surface G2 and the blast coefficient c = 0.45, the charge amount L is: L = cW 3 = 28.8 kg
【００１３】集中装薬により、３自由面を有する地形に
対応する爆破における安全装薬量の算定は、図３で示す
ように、 自由面Ｇ１における最小抵抗線長Ｗ1 ＝４．０ｍ 自由面Ｇ２における最小抵抗線長Ｗ2 ＝４．０ｍ 自由面Ｇ３における最小抵抗線長Ｗ3 ＝４．０ｍ 発破係数ｃ＝０．４５とすれば、装薬量Ｌは、 Ｌ＝ｃＷ3 ＝２８．８ｋｇThe calculation of the safe charge amount in the blast corresponding to the terrain having three free surfaces by the centralized charge is performed, as shown in FIG. 3, by the minimum resistance wire length W 1 = 4.0 m on the free surface G1. if the minimum resistance length W 3 = 4.0 m blasting coefficient c = 0.45 at the minimum resistance length W 2 = 4.0 m free surface G3 in G2, Sokusuriryou L is, L = cW 3 = 28. 8 kg
【００１４】集中装薬により、４自由面を有する地形に
対応する爆破における安全装薬量の算定は、図４で示す
ように、 自由面Ｇ１における最小抵抗線長Ｗ1 ＝４．０ｍ 自由面Ｇ２における最小抵抗線長Ｗ2 ＝４．０ｍ 自由面Ｇ３における最小抵抗線長Ｗ3 ＝４．０ｍ 自由面Ｇ４における最小抵抗線長Ｗ4 ＝４．０ｍ 発破係数ｃ＝０．４５とすれば、装薬量Ｌは、 Ｌ＝ｃＷ3 ＝２８．８ｋｇThe calculation of the safe charge amount in the blasting corresponding to the terrain having four free surfaces by the concentrated charging is performed as shown in FIG. 4 by the minimum resistance wire length W 1 = 4.0 m on the free surface G1. if the minimum resistance length W 2 = 4.0 m minimum resistance length at the free surface G3 W 3 = 4.0 m minimum resistance length at the free surface G4 W 4 = 4.0 m blasting coefficient c = 0.45 in G2 And the charge amount L is: L = cW 3 = 28.8 kg
【００１５】集中装薬により、５自由面を有する地形に
対応する爆破における安全装薬量の算定は、図５で示す
ように、 自由面Ｇ１における最小抵抗線長Ｗ1 ＝４．０ｍ 自由面Ｇ２における最小抵抗線長Ｗ2 ＝４．０ｍ 自由面Ｇ３における最小抵抗線長Ｗ3 ＝４．０ｍ 自由面Ｇ４における最小抵抗線長Ｗ4 ＝４．０ｍ 自由面Ｇ５における最小抵抗線長Ｗ5 ＝４．０ｍ 発破係数ｃ＝０．４５とすれば、装薬量Ｌは、 Ｌ＝ｃＷ3 ＝２８．８ｋｇThe calculation of the safe charge amount in the blast corresponding to the terrain having five free surfaces by the centralized charge is performed, as shown in FIG. 5, by calculating the minimum resistance wire length W 1 = 4.0 m on the free surface G1. least resistance length W 2 in the G2 = 4.0 m minimum resistance length of least resistance length W 4 = 4.0 m free surface G5 at the minimum resistance length W 3 = 4.0 m free surface G4 in the free surface G3 W 5 = 4.0 m Assuming that the blasting coefficient c is 0.45, the charge amount L is: L = cW 3 = 28.8 kg
【００１６】集中装薬により、６自由面を有する地形に
対応する爆破における安全装薬量の算定は、図６で示す
ように、 自由面Ｇ１における最小抵抗線長Ｗ1 ＝４．０ｍ 自由面Ｇ２における最小抵抗線長Ｗ2 ＝４．０ｍ 自由面Ｇ３における最小抵抗線長Ｗ3 ＝４．０ｍ 自由面Ｇ４における最小抵抗線長Ｗ4 ＝４．０ｍ 自由面Ｇ５における最小抵抗線長Ｗ5 ＝４．０ｍ 自由面Ｇ６における最小抵抗線長Ｗ6 ＝４．０ｍ 発破係数ｃ＝０．４５とすれば、装薬量Ｌは、 Ｌ＝ｃＷ3 ＝２８．８ｋｇThe calculation of the safe charge amount in the blast corresponding to the terrain having six free surfaces by the centralized charge is performed as shown in FIG. 6 by calculating the minimum resistance wire length W 1 = 4.0 m on the free surface G1. least resistance length W 2 in the G2 = 4.0 m minimum resistance length of least resistance length W 4 = 4.0 m free surface G5 at the minimum resistance length W 3 = 4.0 m free surface G4 in the free surface G3 W 5 = 4.0 m The minimum resistance wire length W 6 on the free surface G 6 = 4.0 m Assuming that the blasting coefficient c = 0.45, the charge amount L is: L = cW 3 = 28.8 kg
【００１７】集中装薬により、ｎ自由面を有する地形に
対応する爆破における安全装薬量の算定は、図７で示す
ように、 自由面Ｇｎにおける最小抵抗線長Ｗn ＝４．０ｍ 発破係数ｃ＝０．４５とすれば、装薬量Ｌは、 Ｌ＝ｃＷ3 ＝２８．８ｋｇAs shown in FIG. 7, the calculation of the safe charge amount in the blast corresponding to the terrain having the n free surface by the concentrated charge is performed by the minimum resistance wire length Wn = 4.0 m of the free surface Gn as shown in FIG. = 0.45, the charge amount L is: L = cW 3 = 28.8 kg
【００１８】棒状装薬により、２自由面を有する地形に
対応する爆破における安全装薬量の算定は、図９で示す
ように、 自由面Ｇ１における最小抵抗線長Ｗ1 ＝４．０ｍ 自由面Ｇ２における最小抵抗線長Ｗ2 ＝４．０ｍ せん孔間隔長Ｄ＝４．０ｍ せん孔長Ｈ＝１０ｍ 発破係数ｃ＝０．４５とすれば、装薬量Ｌは、 Ｌ＝ｃＤＷＨ＝７２ｋｇThe calculation of the safe charge amount in the blast corresponding to the terrain having two free surfaces by the rod-like charge is performed as shown in FIG. 9, as shown in FIG. 9, the minimum resistance wire length W 1 = 4.0 m on the free surface G1. The minimum resistance wire length W 2 = 4.0 m in G2 The perforation interval length D = 4.0 m The perforation length H = 10 m If the blasting coefficient c = 0.45, the charge amount L is L = cDWH = 72 kg.
【００１９】棒状装薬により、３自由面を有する地形に
対応する爆破における安全装薬量の算定は、図１０で示
すように、 自由面Ｇ１における最小抵抗線長Ｗ1 ＝４．０ｍ 自由面Ｇ２における最小抵抗線長Ｗ2 ＝４．０ｍ 自由面Ｇ３における最小抵抗線長Ｗ3 ＝４．０ｍ せん孔間隔長Ｄ＝４．０ｍ せん孔長Ｈ＝１０ｍ 発破係数ｃ＝０．４５とすれば、装薬量Ｌは、 Ｌ＝ｃＤＷＨ＝７２ｋｇAs shown in FIG. 10, the minimum resistance wire length W 1 = 4.0 m in the free surface G1 is calculated by the rod-shaped charge in the blast corresponding to the terrain having three free surfaces, as shown in FIG. if the minimum resistance length W 2 = 4.0 m minimum resistance length at the free surface G3 W 3 = 4.0 m piercing interval length D = 4.0 m drilling length H = 10 m blasting coefficient c = 0.45 in G2, The charge amount L is: L = cDWH = 72 kg
【００２０】棒状装薬により、４自由面を有する地形に
対応する爆破における安全装薬量の算定は、図１１で示
すように、 自由面Ｇ１における最小抵抗線長Ｗ1 ＝４．０ｍ 自由面Ｇ２における最小抵抗線長Ｗ2 ＝４．０ｍ 自由面Ｇ３における最小抵抗線長Ｗ3 ＝４．０ｍ 自由面Ｇ４における最小抵抗線長Ｗ4 ＝４．０ｍ せん孔間隔長Ｄ＝４．０ｍ せん孔長Ｈ＝１０ｍ 発破係数ｃ＝０．４５とすれば、装薬量Ｌは、 Ｌ＝ｃＤＷＨ＝７２ｋｇ[0020] The bar-like charge, 4 Calculation of the safety charge amount in the blast corresponding to terrain with a free surface, as shown in Figure 11, the minimum resistance length at the free surface G1 W 1 = 4.0 m free surface least resistance length W 2 = 4.0 m minimum resistance length at the free surface G3 W 3 = 4.0 m minimum resistance length at the free surface G4 W 4 = 4.0 m perforated interval length D = 4.0 m perforation lengths in G2 If H = 10 m and blast coefficient c = 0.45, the charge amount L is: L = cDWH = 72 kg
【００２１】棒状装薬により、５自由面を有する地形に
対応する爆破における安全装薬量の算定は、図１２で示
すように、 自由面Ｇ１における最小抵抗線長Ｗ1 ＝４．０ｍ 自由面Ｇ２における最小抵抗線長Ｗ2 ＝４．０ｍ 自由面Ｇ３における最小抵抗線長Ｗ3 ＝４．０ｍ 自由面Ｇ４における最小抵抗線長Ｗ4 ＝４．０ｍ 自由面Ｇ５における最小抵抗線長Ｗ5 ＝４．０ｍ せん孔間隔長Ｄ＝４．０ｍ せん孔長Ｈ＝１０ｍ 発破係数ｃ＝０．４５とすれば、装薬量Ｌは、 Ｌ＝ｃＤＷＨ＝７２ｋｇThe calculation of the safe charge amount in the blast corresponding to the terrain having five free surfaces by the rod-shaped charge is performed as shown in FIG. 12 by the minimum resistance wire length W 1 = 4.0 m on the free surface G1. least resistance length W 2 in the G2 = 4.0 m minimum resistance length of least resistance length W 4 = 4.0 m free surface G5 at the minimum resistance length W 3 = 4.0 m free surface G4 in the free surface G3 W 5 = 4.0 m Perforation interval length D = 4.0 m Perforation length H = 10 m Assuming a blasting coefficient c = 0.45, the charge L is L = cDWH = 72 kg
【００２２】棒状装薬により、６自由面を有する地形に
対応する爆破における安全装薬量の算定は、図１３で示
すように、 自由面Ｇ１における最小抵抗線長Ｗ1 ＝４．０ｍ 自由面Ｇ２における最小抵抗線長Ｗ2 ＝４．０ｍ 自由面Ｇ３における最小抵抗線長Ｗ3 ＝４．０ｍ 自由面Ｇ４における最小抵抗線長Ｗ4 ＝４．０ｍ 自由面Ｇ５における最小抵抗線長Ｗ5 ＝４．０ｍ 自由面Ｇ６における最小抵抗線長Ｗ6 ＝４．０ｍ せん孔間隔長Ｄ＝４．０ｍ せん孔長Ｈ＝１０ｍ 発破係数ｃ＝０．４５とすれば、装薬量Ｌは、 Ｌ＝ｃＤＷＨ＝７２ｋｇThe calculation of the safe charge amount in the blast corresponding to the terrain having six free surfaces by the rod-like charge is performed as shown in FIG. 13 by the minimum resistance wire length W 1 = 4.0 m on the free surface G1. least resistance length W 2 in the G2 = 4.0 m minimum resistance length of least resistance length W 4 = 4.0 m free surface G5 at the minimum resistance length W 3 = 4.0 m free surface G4 in the free surface G3 W 5 = 4.0 m Minimum resistance wire length W 6 on free surface G6 = 4.0 m Perforation interval length D = 4.0 m Perforation length H = 10 m If blasting coefficient c = 0.45, the charge amount L is L = cDWH = 72kg
【００２３】棒状装薬により、ｎ自由面を有する地形に
対応する爆破における安全装薬量の算定は、図１４で示
すように、 自由面Ｇｎにおける最小抵抗線長Ｗn ＝４．０ｍ せん孔間隔長Ｄ＝４．０ｍ せん孔長Ｈ＝１０ｍ 発破係数ｃ＝０．４５とすれば、装薬量Ｌは、 Ｌ＝ｃＤＷＨ＝７２ｋｇWith the rod-shaped charge, the calculation of the safe charge amount in the blast corresponding to the terrain having the n free surface is performed as shown in FIG. D = 4.0m Perforation length H = 10m Assuming that the blasting coefficient c = 0.45, the charge amount L is: L = cDWH = 72 kg
【００２４】[0024]
【発明の効果】以上詳述したように、本発明は、一点集
中装薬及び棒状装薬において、従来、未開発であった複
数の自由面を有する地形に対して、安全かつ効率のよい
爆破方法を提供することができたので、爆破工事の設計
施工に寄与すること絶大である。As described above in detail, the present invention provides a safe and efficient blasting method for a single-point charge and a rod-like charge on a terrain having a plurality of free surfaces which has not been developed before. Since the method was provided, it would be enormous to contribute to the design and construction of the blasting work.
【図１】従来周知の一点集中装薬１自由面爆破における
安全装薬量算定に必要な各部の関連を示す説明図であっ
て、下が平面図、上がその中央縦断面図、FIG. 1 is an explanatory view showing the relationship between each part necessary for calculating a safe charge amount in a conventionally known one-point concentrated charge 1 free surface blast, wherein a lower part is a plan view, an upper part is a central longitudinal sectional view,
【図２】この発明による一点集中装薬２自由面爆破にお
ける安全装薬量算定に必要な各部の関連を示す説明図で
あって、上が縦断面図、下が横断平面図、FIG. 2 is an explanatory view showing the relationship between the components required for calculating the safe charge amount in the single point concentrated charge 2 free surface blasting according to the present invention, wherein the upper part is a longitudinal sectional view, the lower part is a cross-sectional plan view,
【図３】この発明による一点集中装薬３自由面爆破にお
ける安全装薬量算定に必要な各部の関連を示す説明図で
あって、上が縦断面図、下が横断平面図、FIG. 3 is an explanatory view showing the relationship between the components required for calculating the safe charge amount in the one-point concentrated charge 3 free surface blast according to the present invention, wherein the upper part is a longitudinal sectional view, the lower part is a cross-sectional plan view,
【図４】この発明による一点集中装薬４自由面爆破にお
ける安全装薬量算定に必要な各部の関連を示す説明図で
あって、上が縦断面図、下が横断平面図、FIG. 4 is an explanatory view showing the relationship between the components required for calculating the safe charge amount in the single point concentrated charge 4 free surface blast according to the present invention, wherein the upper part is a vertical sectional view, the lower part is a cross-sectional plan view,
【図５】この発明による一点集中装薬５自由面爆破にお
ける安全装薬量算定に必要な各部の関連を示す説明図で
あって、上が縦断面図、下が横断平面図、FIG. 5 is an explanatory view showing the relationship between the components required for calculating the safe charge amount in the single point concentrated charge 5 free surface blast according to the present invention, wherein the upper part is a vertical sectional view, the lower part is a cross-sectional plan view,
【図６】この発明による一点集中装薬６自由面爆破にお
ける安全装薬量算定に必要な各部の関連を示す説明図で
あって、上が縦断面図、下が横断平面図、FIG. 6 is an explanatory view showing the relation of each part necessary for calculating the safe charge amount in the single point concentrated charge 6 free surface blast according to the present invention, wherein the upper part is a vertical sectional view, the lower part is a cross-sectional plan view,
【図７】この発明による一点集中装薬ｎ自由面爆破にお
ける安全装薬量算定に必要な各部の関連を示す説明図で
あって、上が縦断面図、下が横断平面図、FIG. 7 is an explanatory view showing the relationship between the components required for calculating the safe charge amount in the one-point concentrated charge n free surface blasting according to the present invention, wherein the upper part is a longitudinal sectional view, the lower part is a cross-sectional plan view,
【図８】従来公知のこの発明者の発明による棒状装薬１
自由面爆破における安全装薬量算定に必要な各部の関連
を示す説明図であって、下が平面図、上がその中央縦断
面図、FIG. 8 shows a conventional rod-shaped charge 1 according to the present inventors' invention.
It is an explanatory view showing the relationship of each part necessary for calculating the safe charge amount in free surface blasting, the lower part is a plan view, the upper part is a central vertical sectional view,
【図９】この発明による棒状装薬２自由面爆破における
安全装薬量算定に必要な各部の関連を示す説明図であっ
て、上が縦断面図、下が横断平面図、FIG. 9 is an explanatory view showing the relationship between the components required for calculating the safe charge amount in the rod-shaped charge 2 free surface blast according to the present invention, wherein the upper part is a vertical sectional view, the lower part is a cross-sectional plan view,
【図１０】この発明による棒状装薬３自由面爆破におけ
る安全装薬量算定に必要な各部の関連を示す説明図であ
って、上が縦断面図、下が横断平面図、FIG. 10 is an explanatory view showing the relationship between the components required for calculating the safe charge amount in the rod-shaped charge 3 free surface blast according to the present invention, wherein the upper part is a longitudinal sectional view, the lower part is a cross-sectional plan view,
【図１１】この発明による棒状装薬４自由面爆破におけ
る安全装薬量算定に必要な各部の関連を示す説明図であ
って、上が縦断面図、下が横断平面図、FIG. 11 is an explanatory view showing the relationship between each part necessary for calculating the safe charge amount in the bar-shaped charge 4 free surface blast according to the present invention, wherein the upper part is a vertical sectional view, the lower part is a cross-sectional plan view,
【図１２】この発明による棒状装薬５自由面爆破におけ
る安全装薬量算定に必要な各部の関連を示す説明図であ
って、上が縦断面図、下が横断平面図、FIG. 12 is an explanatory view showing the relationship between the respective parts required for calculating the safe charge amount in the bar-shaped charge 5 free surface blast according to the present invention, wherein the upper part is a vertical sectional view, the lower part is a cross-sectional plan view,
【図１３】この発明による棒状装薬６自由面爆破におけ
る安全装薬量算定に必要な各部の関連を示す説明図であ
って、上が縦断面図、下が横断平面図、FIG. 13 is an explanatory view showing the relationship between each part necessary for calculating the safe charge amount in the bar-shaped charge 6 free surface blast according to the present invention, wherein the upper part is a vertical sectional view, the lower part is a cross-sectional plan view,
【図１４】この発明による棒状装薬ｎ自由面爆破におけ
る安全装薬量算定に必要な各部の関連を示す説明図であ
って、上が縦断面図、下が横断平面図である。FIG. 14 is an explanatory view showing the relationship between the components required for calculating the safe charge amount in the rod-shaped charge n free surface blast according to the present invention, wherein the upper part is a vertical sectional view and the lower part is a cross-sectional plan view.
Ｇ１〜Ｇ６，Ｇｎ 自由面の数 Ｗ1 〜Ｗ6 ，Ｗn 最小抵抗線長の数 Ｄ 破壊半径または装薬間隔長（せん孔
間隔長） Ｌ 装薬量 Ｈ せん孔長G1 to G6, the number W 1 ~W 6, Wn least resistance length number D fracture radius or charge interval length (perforated interval length) of Gn free surface L Sokusuriryou H drilling length
Claims (2)
の、一点集中装薬による爆破計画において、 前記複数の自由面Ｇ１〜Ｇｎのそれぞれからいずれも直
角方向の地形内部に向けて等距離の交点、すなわち、複
数の最小抵抗線長Ｗ1 〜Ｗn がいずれも等しい長さで交
わる交点に装薬量Ｌを集中装薬すること、 破壊半径または装薬間隔長Ｄを前記複数の最小抵抗線長
Ｗ1 〜Ｗn と等しくすること、及び、 前記装薬量Ｌを破壊岩盤体積Ｗ3 に対して発破係数ｃ＝
０．２〜０．５の範囲内とすること、 を条件として設計施工することを特徴とする複数の自由
面を有する地形の、一点集中装薬による安全爆破方法。1. In a blast plan of a terrain having a plurality of free surfaces G1 to Gn by a single point charge, all of the plurality of free surfaces G1 to Gn are equidistant toward the inside of the terrain in a right angle direction. The intersection point, that is, the charging amount L is concentrated at the intersection where the plurality of minimum resistance line lengths W 1 to W n intersect at the same length, and the breaking radius or the charging interval length D is set to the plurality of minimum resistance lines. It is equal to the length W 1 wn, and blasting coefficient the charge amount L with respect to fracture rock volume W 3 c =
A safe blasting method for a terrain having a plurality of free surfaces, using a single point charge, characterized by being designed and constructed under the condition of 0.2 to 0.5.
の、棒状装薬による爆破計画において、 自由面Ｇ１から直角方向の内部に向けてせん孔長Ｈを掘
削し、そのせん孔長Ｈに装薬量Ｌを装てんし、その装薬
量Ｌの棒状の端部と前記自由面Ｇ１との間の最短距離を
最小抵抗線長Ｗ1 とすること、 その装薬量Ｌの棒状装薬とその他の最小抵抗線長Ｗ2 〜
Ｗn との位置関係について、前記その他の自由面Ｇ２〜
Ｇｎのそれぞれからいずれも直角方向の地形内部に向け
て設定する前記その他の最小抵抗線長Ｗ2 〜Ｗn が互い
に等しく、かつ、前記最小抵抗線長Ｗ1 とも等しい位置
に前記装薬量Ｌによる棒状装薬を設けること、 破壊半径またはせん孔間隔長Ｄを前記複数の最小抵抗線
長Ｗ1 〜Ｗn と等しくすること、及び、 前記装薬量Ｌを破壊岩盤体積ＤＷＨに対して発破係数ｃ
＝０．２〜０．５の範囲内とすること、 を条件として設計施工することを特徴とする複数の自由
面を有する地形の、棒状装薬による安全爆破方法。2. In a blast plan of a terrain having a plurality of free surfaces G1 to Gn using a rod-shaped charge, a perforation length H is excavated from the free surface G1 toward the inside in a right angle direction, and the perforation length H is charged. A minimum resistance wire length W 1 is defined as the shortest distance between the rod-shaped end of the charged amount L and the free surface G1. Minimum resistance wire length W 2 〜
Regarding the positional relationship with Wn, the other free surfaces G2
Wherein both set toward the inside direction perpendicular terrain from each Gn other least resistance length W 2 wn are equal to each other, and, according to the charge amount L to be equal to a position with the least resistance length W 1 providing a bar-like charge, to the destruction radius or perforation spacing length D equal to the plurality least resistance length W 1 of wn, and blasting coefficient c of the charge amount L with respect to fracture rock volume DWH
= 0.2 to 0.5; design and construction under the following conditions: a safe blasting method using a bar-shaped charge on a terrain having a plurality of free surfaces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11023986A JP2000221000A (en) | 1999-02-01 | 1999-02-01 | Method for safely blasting landform having plural free surfaces |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11023986A JP2000221000A (en) | 1999-02-01 | 1999-02-01 | Method for safely blasting landform having plural free surfaces |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000221000A true JP2000221000A (en) | 2000-08-08 |
Family
ID=12125912
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11023986A Pending JP2000221000A (en) | 1999-02-01 | 1999-02-01 | Method for safely blasting landform having plural free surfaces |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000221000A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020082501A (en) * | 2001-03-20 | 2002-10-31 | 티앤알비 주식회사 | Bench rock blasting method for controlling drill hole space, loading amount and blasting sequence |
| JP2014167202A (en) * | 2013-02-28 | 2014-09-11 | Kajima Corp | Disassembling method |
| CN105627843A (en) * | 2014-11-27 | 2016-06-01 | 华北冶建工程建设有限公司 | New method for blasting rock foundation |
| CN115898481A (en) * | 2023-02-23 | 2023-04-04 | 北京市第三建筑工程有限公司 | High-construction-precision non-coaxial stepped rock cavern transition section blasting excavation method |
-
1999
- 1999-02-01 JP JP11023986A patent/JP2000221000A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020082501A (en) * | 2001-03-20 | 2002-10-31 | 티앤알비 주식회사 | Bench rock blasting method for controlling drill hole space, loading amount and blasting sequence |
| JP2014167202A (en) * | 2013-02-28 | 2014-09-11 | Kajima Corp | Disassembling method |
| CN105627843A (en) * | 2014-11-27 | 2016-06-01 | 华北冶建工程建设有限公司 | New method for blasting rock foundation |
| CN115898481A (en) * | 2023-02-23 | 2023-04-04 | 北京市第三建筑工程有限公司 | High-construction-precision non-coaxial stepped rock cavern transition section blasting excavation method |
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