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公开(公告)号：US685261A
公开(公告)日：1901-10-29
申请号：US1901051558
申请日：1901-03-16
申请人： CRANE WALTER R
发明人： CRANE WALTER R
CPC分类号： F42D1/18
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公开(公告)号：US20240230303A1
公开(公告)日：2024-07-11
申请号：US18288993
申请日：2021-09-28
申请人： Vinesh LOGANATHAN
发明人： Vinesh LOGANATHAN
IPC分类号： F42D1/18
CPC分类号： F42D1/18
摘要： The invention relates to a wedging arrangement to plug a blast hole accommodating an explosive charge. The wedging arrangement comprises a body comprising a first part and a second part arranged to angularly slide relative to each other. Each of the first and second parts defines a holding arrangement for holding the first and second parts relative to each other. The wedging arrangement is configurable between a default configuration in which the holding arrangement holds the first and second parts relative to each other, and a stressed configuration in which the body is subjected to external stress forces thereby causing the holding arrangement to be disengaged to allow the first and second parts to angularly slide relative to each other, in use to locate and lock the wedging arrangement in place within the blast hole in order to plug the blast hole and contain the blast energy resulting from the explosive charge being detonated.
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公开(公告)号：US11976913B2
公开(公告)日：2024-05-07
申请号：US16484671
申请日：2017-12-19
摘要： The invention relates to the field of drilling and blasting operations, and more particularly to confining gaseous explosion products in a charge cavity, and can be used in rock blasting using borehole charges. The technical result of the invention is that of reducing the specific charge of explosive per cubic metre of blasted rock mass, increasing the fragmentation of the rock mass, making it possible for explosive to be loaded into and work effectively in a borehole with excess water pressure (flooded boreholes), providing ease of use and structural simplicity, providing ease of transportation and storage since the device can be dismantled to compact dimensions, and reducing the weight of the structure. A further technical result is the possibility of using devices of a single type in boreholes of different lengths and types (flooded or non-flooded), thus making it possible for the claimed device to be used as a universal device for all types of boreholes. The above-mentioned technical result is achieved in that the claimed borehole plugging device, which is made of a pliable polymer material and has elements with a shape, the outside diameter of which is commensurate with the diameter of a borehole, and an axial internal cavity, is characterized in that it consists of a rod with a cruciform cross section, having identical dome-shaped, slotted elements fixably mounted thereon from each end.
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公开(公告)号：US20150211328A1
公开(公告)日：2015-07-30
申请号：US14168868
申请日：2014-01-30
IPC分类号： E21B33/134 , E21B33/12
CPC分类号： E21B33/1208 , C09K8/00 , E21B33/13 , E21B43/1185 , F42D1/18
摘要： Wells are sealed by means of thermite reaction charges inserted into the wells. The reaction charge can be diluted by addition of metal oxides, silica, or the like control reaction pressure, peak temperature, reaction rate, and expansion characteristics of the resulting thermite plug. The use of dilution of the thermite reactants can take the form of a thermite charge with specific layers, including relatively high and low reaction temperature layers. The ignition source can be oriented to achieve directional control on the product expansion including radial or axial expansion. The charge can be loaded with a large mass to compress the resulting thermite plug into the borehole wall and reduce its porosity during the reaction process. A further variation involves continuous feed of the thermite reactants to the reaction zone. Various combinations and permutations of the above inventive concepts are described.
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公开(公告)号：US20100300318A1
公开(公告)日：2010-12-02
申请号：US12679116
申请日：2007-09-20
IPC分类号： F42D1/18
CPC分类号： F42D1/18
摘要： Apparatus for plugging a hole, such as a bore hole used in blasting, comprises a platform shaped to fit within the hole and to support material such as explosives or stemming at a desired depth in the hole. The platform takes the form of a plate or tray which is generally ellipsoidal in shape so that it fits snugly within the hole when inclined transversely relative to a longitudinal axis of the hole. The plate has a central load support region and a peripheral region for engaging the wall of the hole. The apparatus includes a locking member, typically a length of rigid pipe, attached movably to the platform. The locking member is moveable between a first position in which it is supported clear of the wall of the hole below the platform, and a second position in which it spans the hole to lock the platform in position in the hole. An elongated actuating member in the form of a cord or line is connected to the locking member and platform for lowering the apparatus into the hole and for moving the locking member between its first and second positions.
摘要翻译： 用于堵塞诸如用于喷砂的钻孔的孔的装置包括成形为装配在孔内并且支撑诸如爆炸物的材料或在孔中期望的深度处引导的平台。 平台采用通常为椭圆形的板或盘的形式，使得当相对于孔的纵向轴线横向倾斜时，该平板或托盘紧密地配合在孔内。 板具有中心负载支撑区域和用于接合孔的壁的周边区域。 该装置包括可移动地附接到平台的锁定构件，通常为一定长度的刚性管。 锁定构件可以在第一位置和第二位置之间移动，在第一位置，第一位置支撑在平台下面的孔的壁之外，并且第二位置跨越孔以将平台锁定在孔中的适当位置。 线状或线状的细长致动构件连接到锁定构件和平台，用于将装置降低到孔中并且用于使锁定构件在其第一和第二位置之间移动。
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公开(公告)号：US5936187A
公开(公告)日：1999-08-10
申请号：US933806
申请日：1997-09-19
申请人： Joseph T. Miller , Robert B. Brown
发明人： Joseph T. Miller , Robert B. Brown
CPC分类号： F42D1/18
摘要： A stemming plug constructed from a durable, resilient material and comprising a circumferential wall defining an inner cavity, an end wall at the first end and an open second end. In the preferred embodiment, the circumferential wall is fluted so that it can easily compress and seat in a borehole while maintaining a snug friction fit. The plug is inserted in the borehole over the explosive charge. Stemming material, preferably rock, is placed on top of the plug. The stemming material covers the top and slides down around the circumferential wall and is lodged between the circumferential wall and the borehole. Upon explosion, the blast energy is forced into the inner cavity causing the circumferential wall to expand outwardly and thereby engaging the stemming material and the borehole wall to secure the plug in place. The stemming material can also be placed inside the plug, with blast energy inverting the plug end wall to wedge stemming material within the borehole.
摘要翻译： 引杆塞，其由耐用的弹性材料构成，并且包括限定内腔的圆周壁，在第一端处的端壁和敞开的第二端。 在优选实施例中，圆周壁是槽纹的，使得其可以容易地压缩和坐在钻孔中，同时保持紧密的摩擦配合。 插头插入钻孔中的炸药。 将优质岩石材料放置在插头顶部。 引导材料覆盖顶部并且围绕圆周壁向下滑动并且被套在圆周壁和钻孔之间。 爆炸时，爆炸能量被迫进入内腔，导致周向壁向外扩张，从而接合引导材料和钻孔壁，以将塞子固定就位。 引导材料也可以放置在塞子内，爆破能量将塞子端壁反转到钻孔内的楔形引导材料。
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