EP0069817B1 - Explosions de volumes - Google Patents

Explosions de volumes Download PDF

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Publication number
EP0069817B1
EP0069817B1 EP81630074A EP81630074A EP0069817B1 EP 0069817 B1 EP0069817 B1 EP 0069817B1 EP 81630074 A EP81630074 A EP 81630074A EP 81630074 A EP81630074 A EP 81630074A EP 0069817 B1 EP0069817 B1 EP 0069817B1
Authority
EP
European Patent Office
Prior art keywords
segment
depth
volume
holes
drilled
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP81630074A
Other languages
German (de)
English (en)
Other versions
EP0069817A3 (en
EP0069817A2 (fr
Inventor
Eugène Ehret
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Arcelor Luxembourg SA
Original Assignee
Arbed SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Arbed SA filed Critical Arbed SA
Priority to AT81630074T priority Critical patent/ATE19115T1/de
Publication of EP0069817A2 publication Critical patent/EP0069817A2/fr
Publication of EP0069817A3 publication Critical patent/EP0069817A3/en
Application granted granted Critical
Publication of EP0069817B1 publication Critical patent/EP0069817B1/fr
Expired legal-status Critical Current

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Classifications

    • 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
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
    • E02D3/02—Improving by compacting
    • E02D3/10—Improving by compacting by watering, draining, de-aerating or blasting, e.g. by installing sand or wick drains

Definitions

  • the invention relates to a method for volume blasting, in particular for selective loosening of solid example. rocky ground with a view to digging trenches or ramming piles, sheet piles and the like.
  • the energy sources such as electricity, gas, oil and water must be brought from ever greater distances.
  • the electrical current can be transported over long distances by overland lines, but on the other hand, gas, oil and water must be transported through lines, which become larger the greater the demand.
  • These lines are advantageously laid in the ground so that the surface of the earth is not blocked unnecessarily and can be used for other purposes. For this reason, trenches have to be dug at times for the purpose of storing said lines. As long as the trenches can be dug in the ground or in loose rock, the conventional excavation machines are sufficient.
  • the object of the proposed invention was to propose a method which avoids these problems and which allows the rock masses to be adequately and simultaneously smashed to the desired extent.
  • the charges are ignited using a delay detonator and detonating cord.
  • any depths of the trench can be loosened up with just one detonation.
  • the free bores according to the invention and igniting the charges by means of a delay detonator, the shattered rock is given the necessary expansion possibility in the desired longitudinal direction without the shattering going beyond the predetermined width of the segment.
  • the blasting method according to the invention is not limited in its application and can also be used, for example, when driving down shafts.
  • the figure shows the free bores (2) which make up around 14% of the segment volume and are driven in the shape of a St. Andrew's cross.
  • the pressure waves (5) from the detonation holes (3 and 4) spread concentrically during delay ignition and move towards the free holes (2).
  • the rock masses are smashed and the free holes are filled with the excess volume.
  • Fig. 2 shows a longitudinal section through an explosive bore with a spacer (10) on which the explosive charges (12) are attached at intervals and connected to the detonating cord (13) which runs along the spacer.
  • the entire explosive device is lightly plugged with drilling dust, sand or slag sand (14). As you can see, the depth of the destruction can be measured at will by inserting the spacer with the appropriate explosive devices into the blasting holes as required for higher or lower.
  • a trench 3 m long, 0.65 m wide and 5 m deep is to be dug in solid rock.
  • the trench length is divided into 5 segments (6) with a length of 0.60 m. With a width of 0.65 m and a depth of 5 m, this corresponds to a fixed volume of 1.950 m3. 14% free volume of which is 0.273 m3. If you choose 90 mm as the diameter of the free bores (2), this corresponds to 9 free bores, which are distributed evenly over the diagonals of the segment surfaces. Blasting holes (3) and (4) are made at the intersection of the center line of the segments and the upper and lower boundary lines of each segment.
  • the loosened rock can be easily excavated, whereby the trench is exposed in the desired dimensions.

Landscapes

  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Soil Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Agronomy & Crop Science (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • Drilling And Exploitation, And Mining Machines And Methods (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Led Devices (AREA)
  • Reverberation, Karaoke And Other Acoustics (AREA)
  • Earth Drilling (AREA)
  • Bulkheads Adapted To Foundation Construction (AREA)

Claims (3)

1. Procédé pour faire des fissures en volume à l'aide d'explosifs, en particulier pour ameublir de façon sélective des terres dures p. ex. rocheuses, en vue d'y creuser des fossés ou d'enfoncer des palplanches, des pieux etc., dans lequel
a. le volume total à ameublir est subdivisé en une multitude de segments volumiques (6) semblables, dans lesquels la largeur et la profondeur sont des constantes;
b. des forages (2) sans charge sont prévus dans chaque segment, la profondeur des forages correspondant à celle du segment et la longueur (1) du segment, le nombre des forages sans charge et leur diamètre sont reliés de manière à ce que le volume total des forages sans charge par segment corresponde approximativement à 14 % du volume du segment;
c. un forage avec charge explosive (3 et 4) est disposé au début et à la fin et sur la ligne médiane de chaque segment, la profondeur des forages avec charge explosive correspondant à la profondeur du segment, et
d. l'explosion des positions (3 et 4) est retardée l'une par rapport à l'autre.
2. Procédé selon la revendication 1, dans lequel les forages sans charge sont disposés le long des diagonales des segments, chaque coin de segment ainsi que chaque milieu de segment pouvant présenter un forage sans charge.
3. Procédé selon les revendications 1 et 2, dans lequel la profondeur à ameublir est déterminée avec précision en fixant sur un distanceur, par exemple une perche (10), la quantité requise de matière explosive (12) à la hauteur adéquate et en l'introduisant dans les forages (3,4) prévus pour recevoir des charges explosives.
EP81630074A 1981-07-15 1981-11-11 Explosions de volumes Expired EP0069817B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81630074T ATE19115T1 (de) 1981-07-15 1981-11-11 Volumensprengen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
LU83493A LU83493A1 (de) 1981-07-15 1981-07-15 Volumensprengen
LU83493 1981-07-15

Publications (3)

Publication Number Publication Date
EP0069817A2 EP0069817A2 (fr) 1983-01-19
EP0069817A3 EP0069817A3 (en) 1984-04-25
EP0069817B1 true EP0069817B1 (fr) 1986-04-09

Family

ID=19729697

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81630074A Expired EP0069817B1 (fr) 1981-07-15 1981-11-11 Explosions de volumes

Country Status (4)

Country Link
EP (1) EP0069817B1 (fr)
AT (1) ATE19115T1 (fr)
DE (1) DE3174344D1 (fr)
LU (1) LU83493A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3340725A1 (de) * 1983-11-10 1985-05-23 Winfried 3062 Brückeburg Rosenstock Verfahren zur abschnittsweisen herstellung einer schlitzwand
WO1991004455A1 (fr) * 1989-09-12 1991-04-04 Tsentralny Nauchno-Issledovatelsky I Proektno-Experimentalny Institut Organizatsii, Mekhanizatsii I Tekhnicheskoi Pomoschi Stroitelstvu Procede de realisation de cavites dans un sol dur
DE4037921C2 (de) * 1990-11-26 1996-03-07 Lausitzer Braunkohle Ag Verfahren zur Beseitigung von Gesteinshindernissen in Flachbohrungen, Erdschlitzen, Baugruben und ähnlichen Bauwerken
BE1005955A3 (fr) * 1992-06-05 1994-04-05 Carrieres Et Fours A Chaux De Procede de chargement d'un puits de tir de mines.
WO2002073120A1 (fr) * 2001-03-09 2002-09-19 Brandrill Torrex (Proprietary) Limited Procede d'exploitation miniere
CN107024153B (zh) * 2017-05-04 2018-08-24 中水东北勘测设计研究有限责任公司 水下岩塞爆破陀螺分布式药室法
CN108489348B (zh) * 2018-01-31 2019-10-29 江西铜业股份有限公司 一种深孔与短孔组合式的硬岩露天台阶爆破方法
CN109470091A (zh) * 2018-12-17 2019-03-15 中国矿业大学(北京) 一种用于爆破工程的钻孔药包

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE538890A (fr) * 1954-06-15
FR1528894A (fr) * 1967-04-24 1968-06-14 Sondages Rhone Alpes Procédé pour le compactage des sols et pour couler des pieux ou fondations noyés dans le sol
DE2109037A1 (de) * 1971-02-25 1972-09-07 Gosudarstwenny Trest po proiswodstwu burowsrywnych rabot "Sojuswsrywprom", Moskau Verfahren zur Herstellung von Aufschüttungs-Bauwerken durch gerichtete Explosion
NL7703935A (en) * 1977-04-12 1978-10-16 Ruiter Boringen En Bemalingen Soil compaction system - uses explosive charges and forms drainage channels round charges

Also Published As

Publication number Publication date
LU83493A1 (de) 1983-04-06
ATE19115T1 (de) 1986-04-15
EP0069817A3 (en) 1984-04-25
EP0069817A2 (fr) 1983-01-19
DE3174344D1 (en) 1986-05-15

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