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    Method of no-pillar mining with gob-entry retaining adapted for fully-mechanized top coal caving in thick coal seam
    1.
    发明授权
    Method of no-pillar mining with gob-entry retaining adapted for fully-mechanized top coal caving in thick coal seam 有权

    公开(公告)号：US12037905B2

    公开(公告)日：2024-07-16

    申请号：US17604113

    申请日：2020-04-15

    申请人： China University of Mining and Technology, Beijing

    发明人： Jiong Wang ,  Manchao He ,  Guangyuan Yu ,  Han Sun

    IPC分类号： E21D19/02 ,  E21C37/00 ,  E21C41/18 ,  E21D20/02

    CPC分类号： E21D19/02 ,  E21C37/00 ,  E21C41/18 ,  E21D20/02

    摘要： The present disclosure relates to a technical field of coal mining, particularly to a method of no-pillar mining with gob-entry retaining adapted for fully-mechanized top coal caving in a thick coal seam, which comprises the following steps: reinforcing support on a roof and two sides of a roadway; performing roof slitting blasting to form a pre-splitting slit; erecting a temporary support device and a gangue retaining device in the roadway along the retained entry; performing no caving within a range of a preset distance at an end of the working face near the retained entry side; and removing the temporary support device in the roadway after entry forming stabilizes, and closing the goaf to complete entry retaining. The roof slitting blasting is more beneficial to collapse of strata in the goaf, so that the strata in the slit can better fill stoping space after collapse, and the roof of the retained entry forms a short arm beam structure laterally, which avoids forming a long suspended roof in the goaf, and improves the stress of surrounding rock of gob-side entry retaining; coal caving is not performed in a certain range at the end of the working face of the retained entry side, which further ensures the filling effect of the goaf on the retained entry side, effectively limits the rotary sinking of blocks of the main roof, and greatly reduces effect on the stability of the retained entry.

    METHOD OF NO-PILLAR MINING WITH GOB-ENTRY RETAINING ADAPTED FOR FULLY-MECHANIZED TOP COAL CAVING IN THICK COAL SEAM
    5.
    发明申请
    METHOD OF NO-PILLAR MINING WITH GOB-ENTRY RETAINING ADAPTED FOR FULLY-MECHANIZED TOP COAL CAVING IN THICK COAL SEAM 有权

    公开(公告)号：US20220275726A1

    公开(公告)日：2022-09-01

    申请号：US17604113

    申请日：2020-04-15

    申请人： China University of Mining and Technology, Beijing

    发明人： Jiong WANG ,  Manchao HE ,  Guangyuan YU ,  Han SUN

    IPC分类号： E21D19/02 ,  E21C37/00 ,  E21C41/18 ,  E21D20/02

    摘要： The present disclosure relates to a technical field of coal mining, particularly to a method of no-pillar mining with gob-entry retaining adapted for fully-mechanized top coal caving in a thick coal seam, which comprises the following steps: reinforcing support on a roof and two sides of a roadway; performing roof slitting blasting to form a pre-splitting slit; erecting a temporary support device and a gangue retaining device in the roadway along the retained entry; performing no caving within a range of a preset distance at an end of the working face near the retained entry side; and removing the temporary support device in the roadway after entry forming stabilizes, and closing the goaf to complete entry retaining. The roof slitting blasting is more beneficial to collapse of strata in the goaf, so that the strata in the slit can better fill stoping space after collapse, and the roof of the retained entry forms a short arm beam structure laterally, which avoids forming a long suspended roof in the goaf, and improves the stress of surrounding rock of gob-side entry retaining; coal caving is not performed in a certain range at the end of the working face of the retained entry side, which further ensures the filling effect of the goaf on the retained entry side, effectively limits the rotary sinking of blocks of the main roof, and greatly reduces effect on the stability of the retained entry.

    Multi-well solution mining exploitation of an evaporite mineral stratum
    8.
    发明申请
    Multi-well solution mining exploitation of an evaporite mineral stratum 审中-公开
    蒸发岩矿层的多井解决方案开采

    公开(公告)号：US20160356157A1

    公开(公告)日：2016-12-08

    申请号：US14212935

    申请日：2014-03-14

    申请人： SOLVAY SA

    发明人： Ronald O. HUGHES ,  Matteo PAPERINI ,  Herve CUCHE ,  Joseph A. VENDETTI ,  Larry C. REFSDAL ,  Jean-Paul DETOURNAY ,  David M. HANSEN ,  Todd BRICHACEK ,  Justin T. PATTERSON ,  John KOLESAR ,  Ryan SCHMIDT ,  Beatrice C. ORTEGO

    IPC分类号： E21C41/16 ,  E21C37/00 ,  C22B3/12

    CPC分类号： E21B43/283

    摘要： A method for in situ solution mining of a mineral from an underground evaporite stratum using a set of wells in fluid communication with at least one mineral cavity with some wells operated in solvent injection mode and other wells operated in brine production mode and optionally with some inactive wells, comprising switching the operation mode of one or more wells. The evaporite mineral preferably comprises trona. The at least one cavity is preferably formed by lithological displacement of the evaporite stratum at a weak interface with an underlying insoluble stratum by application of a lifting hydraulic pressure. The extracted brine can be processed to make valuable products such as soda ash and/or any derivatives thereof, rock salt, or potash. This method can provide more uniform dissolution of mineral in the cavity, can minimize flow channeling, can minimize sodium bicarbonate blinding for solution mining of incongruent trona ore, and/or may avoid uneven deposit of insolubles.

    摘要翻译： 一种用于使用一组与至少一个矿物腔流体连通的孔的原位溶液从地下蒸发岩层中开采矿物的方法，其中一些井以溶剂注入模式操作，其他井以盐水生产模式操作，并且可选地具有一些非活性的 井，包括切换一个或多个井的操作模式。 蒸发岩矿物优选包含天然碱。 优选地，通过施加提升液压，通过在与弱潜层的弱界面处的蒸发岩层的岩性位移来形成至少一个空腔。 可以处理提取的盐水以制造有价值的产品，例如苏打灰和/或其任何衍生物，岩盐或钾盐。 这种方法可以提供更均匀的矿物溶解在空腔中，可以最小化流动通道，可以最大程度地减少不协调的天然碱矿石溶液开采的碳酸氢钠盲目，和/或可以避免不均匀沉积。

    DRILL AND BLAST METHOD AND APPARATUS FOR THE SAME
    9.
    发明申请
    DRILL AND BLAST METHOD AND APPARATUS FOR THE SAME 审中-公开
    钻孔和喷砂方法及其设备

    公开(公告)号：US20150211367A1

    公开(公告)日：2015-07-30

    申请号：US14432169

    申请日：2013-09-27

    申请人： CENTRE FOR EXCELLENCE IN MINING INNOVATION

    发明人： Douglas Morrison

    IPC分类号： E21C37/00 ,  E21D19/04

    CPC分类号： E21C37/00 ,  E21C37/14 ,  E21C41/16 ,  E21D19/04

    摘要： Disclosed is a drill and blast method for advancing the tunnel face in a mine, which makes use of a mobile canopy. The mobile canopy having vertical supports connected to a frame that supports a shield. The mobile canopy allows for face production activities and ground support activities to occur simultaneously or near simultaneously. This allows for more rapid advancement of the tunnel face compared to traditional batch drill and blast techniques.

    摘要翻译： 公开了一种用于推进矿井中的隧道面的钻孔和爆破方法，其利用移动罩。 移动顶篷具有连接到支撑屏蔽的框架的垂直支撑件。 移动式天棚允许面部生产活动和地面支持活动同时或接近同时发生。 与传统的批量钻和爆破技术相比，这允许隧道面更快速地推进。

    USE OF POST-BLAST MARKERS IN THE MINING OF MINERAL DEPOSITS
    10.
    发明申请
    USE OF POST-BLAST MARKERS IN THE MINING OF MINERAL DEPOSITS 有权
    后矿石标记在矿物沉积采矿中的应用

    公开(公告)号：US20130147253A1

    公开(公告)日：2013-06-13

    申请号：US13763930

    申请日：2013-02-11

    申请人： ORICA EXPLOSIVES TECHNOLOGY PTY LTD

    发明人： Alexander Theofile SPATHIS ,  Peter Conran DARE-BRYAN ,  Rodney Wayne APPLEBY ,  Richard John GOODRIDGE

    IPC分类号： E21C37/00

    CPC分类号： E21C37/00 ,  E21C37/16 ,  F42D1/00 ,  F42D1/02 ,  F42D3/04

    摘要： A method of mining a mineral deposit includes setting a plurality of explosive charges at spaced pre-blast locations in the deposit, wherein at least selected pre-blast locations also carry respective markers that are such that the post-blast location of at least a useful proportion will be detectable after explosion of the charges. After the charges are exploded to fragment the deposit, the post-blast locations of certain of the markers are detected to obtain an indication of the relative positions of selected components of the mineral deposit after the fragmentation of the deposit by the exploding of the charges. Also disclosed is a method utilising a plurality of markers arranged to emit a detectable signal after blast fragmentation, and detecting the post-blast locations by triangulation techniques employing a plurality of receiver detectors. A further aspect proposes the use of secondary explosive charges as post-blast markers.

    摘要翻译： 一种采矿矿床的方法包括在沉积物中的间隔的预喷射位置设置多个爆炸装料，其中至少选定的预喷射位置还带有相应的标记，使得至少有用的爆破后位置 比例将在爆炸后收取费用。 在收费爆炸以分割存款之后，检测到某些标记的后期位置，以便通过费用爆炸来获得沉积物碎裂后的矿床选定成分的相对位置的指示。 还公开了一种利用多个标记的方法，其布置成在爆炸破碎之后发出可检测信号，并且通过使用多个接收器检测器的三角测量技术来检测爆破后位置。 另一方面提出使用次级炸药作为后爆炸标记。