WO2013170294A1 - Bouchons de bourrage - Google Patents

Bouchons de bourrage Download PDF

Info

Publication number
WO2013170294A1
WO2013170294A1 PCT/AU2013/000489 AU2013000489W WO2013170294A1 WO 2013170294 A1 WO2013170294 A1 WO 2013170294A1 AU 2013000489 W AU2013000489 W AU 2013000489W WO 2013170294 A1 WO2013170294 A1 WO 2013170294A1
Authority
WO
WIPO (PCT)
Prior art keywords
plug
stemming
sleeve
blast hole
wedge
Prior art date
Application number
PCT/AU2013/000489
Other languages
English (en)
Inventor
Jeffrey Bruce Phillips
Original Assignee
Rise Mining Developments Pty Ltd
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
Priority claimed from AU2012902033A external-priority patent/AU2012902033A0/en
Application filed by Rise Mining Developments Pty Ltd filed Critical Rise Mining Developments Pty Ltd
Publication of WO2013170294A1 publication Critical patent/WO2013170294A1/fr

Links

Classifications

    • 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
    • F42D1/18—Plugs for boreholes

Definitions

  • Steping describes both the inert material, and the act of placing inert material into a blast hole to contain the blast gases as much as possible on detonation. Without stemming, blast holes remain open and the explosives on detonation will seek the path of least resistance, being out through the open collar of the blast hole in which the explosives were placed. Resistance is desirable to make the explosives more efficient. The more resistance that can be put into a blast hole to contain the explosives, the more work the explosives gases generated will do in breaking the rock material around the hole to escape on detonation.
  • Prior art methods for stemming blast holes include various mechanical devices, such as: • Rubber or plastic caps that are pushed into the hole and provide very little effectiveness other than to ensure the explosives stay in the hole;
  • This Korean patent describes a bidirectional wedge arrangement with guide wings. While it is not specifically stated in the brief English summary, the diagram indicates the wedge shape that would need to be made from metal or wood, and could not be made from concrete or grout.
  • This patent describes a mechanical packer arrangement made from plastic. It would work in any angle holes - upholes, downholes, or horizontal holes but is specifically designed for mining and tunnelling.
  • An internal threaded tube provides the thread where, on turning, the mechanical force pushes the plastic outer against the borehole wall.
  • This patent describes a stemming plug which is cup shaped, made out of a durable, resilient material - PVC, urethane, rubber or the like. It is directed at surface downholes.
  • the solid core of the plug is formed from cured grout material.
  • the dry grout material largely comprises Portland cement.
  • various additives may be required such as plasticisers, retarders or accelerators, and aggregates.
  • the dry grout material is a fast setting, low heat of hydration cement mixture.
  • the bulk of the cement mixture comprises a low heat cement.
  • the cement mixture is a low heat cement comprising about 70% by weight of the mixture with the balance of the mixture comprising equal parts of general purpose cement, a rapid set cement (5 minute), and an immediate set cement (1 minute).
  • Figures 1 1 a, 1 1 b and 1 1c illustrate a preferred method in accordance with the present invention of installing the stemming plug of Figure 10 in a blast hole;
  • the grout material 18 largely comprises non-expanding Portland cement.
  • additives may be required such as plasticisers, retarders or accelerators, and aggregates.
  • the grout mix needs the following characteristics: • Heat of hydration to be as low as possible since there is a temperature restriction on the explosives being used, which is 70° Celsius.
  • the ambient rock temperature in some mines may be as high as 40° Celsius, so ideally the lower the additional temperature through heat of hydration, the more suitable the stemming plug 10 will be.
  • the solid core 48 is cut into sections of approximately 50mm.
  • the solid core has an outer diameter about 15mm less than the nominal drill bit size.
  • the preferred diameter of the solid core 48 is 75mm. Similar logic would apply for 102mm, 76mm, and 64mm drill bit sizes which are all commonly used for underground production holes.
  • the solid core 48 is cut through at an acute angle of between about 45° and 85°. More preferably the solid core 48 is cut through at an angle of about 62° to form the two wedge-shaped members 42 as shown in Figures 7 and 8.
  • the presence of the fibres in the core allows the wedge-shaped members 42 to maintain the acute angle. Without the fibres, the leading edge of each wedge-shaped member 42 would crack away, making a blunt wedge which would be less effective.
  • the operator just provides a sharp jab or jolting motion to the plug 40.
  • This causes the fold in the hessian sleeve 12 to open and the wedge-shaped members 42 to separate and slide across each other so as to lock into the walls of the blast hole, as shown in Figure 1 1 b.
  • the sleeve 12 can accommodate the increase in diameter of the plug 40 caused by the sliding movement of the wedge-shaped members 42 relative to each other.
  • the wedge-shaped members 42 now engage with and grip the walls of the blast hole. Note it need not be tamped against the explosives column but can be located anywhere in the blast hole.
  • the design of the plug 40 with the wedge-shaped members 42 allows the very simple installation described by jolting the plug at the correct location.
  • the wedges 42 then provide the resistance to tamp the grout in the base of the plug. It is this plug design - stitching, outer sleeve, and to a lesser extent grout content which combine to make the wedges 42 work effectively in providing the stemming resistance on initiation of the explosives. This will then allow immediate use, rather than having to wait 6-24 hours to allow the grout to cure prior to firing a blast.
  • the grout material 18 now plays a secondary role to that of the wedges 42.
  • the inner join line 44 is made of water-soluble material and defines a first diameter of the sleeve 12 which is smaller than a second diameter defined by the second join- line 16 and which is adapted to be received in a blast hole.
  • the first inner join line 44 in this embodiment is also taken around the head of the sleeve to define a first length of the sleeve 12 which is smaller than a second length defined by the second join line 16.
  • the porous sleeve 12 is preferably made from a sheet of hessian 22 as in the previous embodiments.
  • the stemming plug 60 further comprises a pair of elongate wedge-shaped members 62 received in sliding relationship with respect to each other so as to form a solid core within the porous sleeve.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Lining And Supports For Tunnels (AREA)
  • Pens And Brushes (AREA)

Abstract

Un bouchon de bourrage (10) pour le bourrage d'un trou de mine dans une mine comprend un manchon allongé (12) composé d'un matériau poreux comprenant une première ligne de jonction interne (14) et une seconde ligne de jonction externe (16). La ligne de jonction interne (14) est composée d'un matériau soluble dans l'eau et définit un premier diamètre du manchon (12) qui est inférieur à un second diamètre défini par la seconde ligne de jonction (16) et qui est conçu pour être reçu dans un trou de mine. Le manchon poreux (12) contient un volume de matériau de coulis sec (18) sous la forme de particules. Lorsque le bouchon (10) est immergé dans l'eau, il dissout la première ligne de jonction interne et se mélange avec le matériau de coulis (18) pour former une pâte pouvant se glisser dans le manchon poreux lorsque le bouchon est tassé dans le trou de mine. Le manchon poreux (12) est alors libre de se dilater en direction du second diamètre alors que le bouchon est tassé et, de cette manière, le bouchon de bourrage (10) peut être utilisé pour bloquer le trou de mine une fois que le matériau de coulis (18) durcit.
PCT/AU2013/000489 2012-05-17 2013-05-13 Bouchons de bourrage WO2013170294A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
AU2012902033A AU2012902033A0 (en) 2012-05-17 Stemming Plugs
AU2012902033 2012-05-17
AU2012905523A AU2012905523A0 (en) 2012-12-17 Stemming Plugs
AU2012905523 2012-12-17

Publications (1)

Publication Number Publication Date
WO2013170294A1 true WO2013170294A1 (fr) 2013-11-21

Family

ID=49582886

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU2013/000489 WO2013170294A1 (fr) 2012-05-17 2013-05-13 Bouchons de bourrage

Country Status (2)

Country Link
AR (1) AR091084A1 (fr)
WO (1) WO2013170294A1 (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103924652A (zh) * 2014-04-06 2014-07-16 金建工程设计有限公司 一种窗口式排水井及其施工方法
WO2015035456A1 (fr) * 2013-09-11 2015-03-19 Rise Mining Developments Pty Ltd Bouchons de bourrage en coin à frottement modifié
CN104567568A (zh) * 2014-12-19 2015-04-29 宋俊生 一种炮孔封堵装置及方法
CN106930723A (zh) * 2017-02-15 2017-07-07 扬州大泽石油工程技术有限公司 聚能捆绑型筑巢堵漏固壁装置及其在溶洞堵漏中的应用
CN106969675A (zh) * 2017-03-22 2017-07-21 山东大学 一种隧道超前地质预报炮孔填充堵塞装置及方法
WO2018102858A1 (fr) * 2016-12-07 2018-06-14 Rise Mining Developments Pty Ltd Bouchons de bourrage améliorés
CN108843270A (zh) * 2018-07-20 2018-11-20 河南理工大学 一种三通道注浆管及其搭接使用方法
CN109443120A (zh) * 2018-11-23 2019-03-08 吕梁学院 大孔径静态爆破防喷孔装置及其使用方法
US10577886B2 (en) 2014-01-13 2020-03-03 Rise Mining Developments Pty Ltd Drill hole plug with anchoring grooves and at least one sealing groove

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3806025A (en) * 1970-10-19 1974-04-23 T Marshall Stemming bag
US4787316A (en) * 1984-09-10 1988-11-29 Econex, Inc. Expandable, self-tamping explosive bag
US5497829A (en) * 1993-11-17 1996-03-12 Foam Concepts, Inc. Expansion foam borehole plug and method
US5936187A (en) * 1997-09-19 1999-08-10 Mocap Incorporated Blasting stemming plug
WO2012034181A1 (fr) * 2010-09-15 2012-03-22 Rise Mining Developments Pty Ltd Bouchons de trou de forage

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3806025A (en) * 1970-10-19 1974-04-23 T Marshall Stemming bag
US4787316A (en) * 1984-09-10 1988-11-29 Econex, Inc. Expandable, self-tamping explosive bag
US5497829A (en) * 1993-11-17 1996-03-12 Foam Concepts, Inc. Expansion foam borehole plug and method
US5936187A (en) * 1997-09-19 1999-08-10 Mocap Incorporated Blasting stemming plug
WO2012034181A1 (fr) * 2010-09-15 2012-03-22 Rise Mining Developments Pty Ltd Bouchons de trou de forage

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015035456A1 (fr) * 2013-09-11 2015-03-19 Rise Mining Developments Pty Ltd Bouchons de bourrage en coin à frottement modifié
US10577886B2 (en) 2014-01-13 2020-03-03 Rise Mining Developments Pty Ltd Drill hole plug with anchoring grooves and at least one sealing groove
CN103924652B (zh) * 2014-04-06 2016-03-30 金建工程设计有限公司 一种窗口式排水井及其施工方法
CN103924652A (zh) * 2014-04-06 2014-07-16 金建工程设计有限公司 一种窗口式排水井及其施工方法
CN104567568A (zh) * 2014-12-19 2015-04-29 宋俊生 一种炮孔封堵装置及方法
US11150068B2 (en) 2016-12-07 2021-10-19 Rise Mining Development Pty Ltd Stemming plugs
AU2017371709B2 (en) * 2016-12-07 2022-12-01 Rise Mining Developments Pty Ltd Improved stemming plugs
WO2018102858A1 (fr) * 2016-12-07 2018-06-14 Rise Mining Developments Pty Ltd Bouchons de bourrage améliorés
CN110062869B (zh) * 2016-12-07 2022-05-03 莱斯矿业发展控股有限公司 改进的堵塞塞子
EA038962B1 (ru) * 2016-12-07 2021-11-15 Райз Майнинг Дивелопментс Пти Лтд Улучшенные запирающие забойки
CN110062869A (zh) * 2016-12-07 2019-07-26 莱斯矿业发展控股有限公司 改进的堵塞塞子
CN106930723A (zh) * 2017-02-15 2017-07-07 扬州大泽石油工程技术有限公司 聚能捆绑型筑巢堵漏固壁装置及其在溶洞堵漏中的应用
US10822913B2 (en) 2017-02-15 2020-11-03 China University Of Petroleum-Beijing Energy-gathered bundle type nesting plugging and wall reinforcing device and application thereof in karst cave plugging
CN106969675A (zh) * 2017-03-22 2017-07-21 山东大学 一种隧道超前地质预报炮孔填充堵塞装置及方法
CN108843270A (zh) * 2018-07-20 2018-11-20 河南理工大学 一种三通道注浆管及其搭接使用方法
CN109443120A (zh) * 2018-11-23 2019-03-08 吕梁学院 大孔径静态爆破防喷孔装置及其使用方法
CN109443120B (zh) * 2018-11-23 2023-09-12 吕梁学院 大孔径静态爆破防喷孔装置及其使用方法

Also Published As

Publication number Publication date
AR091084A1 (es) 2014-12-30

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