METHOD OF NO-PILLAR MINING WITH GOB-ENTRY RETAINING ADAPTED FOR FULLY-MECHANIZED TOP COAL CAVING IN THICK COAL SEAM

    公开(公告)号:US20220275726A1

    公开(公告)日:2022-09-01

    申请号:US17604113

    申请日:2020-04-15

    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
    5.
    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

    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
    6.
    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

    发明人: Douglas Morrison

    IPC分类号: E21C37/00 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
    7.
    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

    IPC分类号: E21C37/00

    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。

    Apparatus and method for mining coal
    8.
    发明授权
    Apparatus and method for mining coal 有权
    煤炭开采设备及方法

    公开(公告)号:US08262167B2

    公开(公告)日:2012-09-11

    申请号:US12805703

    申请日:2010-08-16

    IPC分类号: E21C37/00

    摘要: The present invention relates to a novel method of mining underground coal and recovering coal seam gas, the method including locating a seam of coal; digging a mine shaft to reach the seam of coal; constructing a ventilated underground control center which includes a computerized control panel, wherein the computerized control panel controls the movement of a drill head, a hollow drill shaft, a movable hydraulic shield, a movable resin roof bolting machine, and a movable waste extrusion device; providing mining personnel to the ventilated underground control center; and allowing the mining personnel to operate the computerized control panel wherein they perform the tasks of moving the drill head into the seam of coal to obtain aggregate coal and coal seam gas; extruding waste material into mined-out space of the coal seam; and transferring the aggregate coal and coal seam gas to the surface of the earth.

    摘要翻译: 本发明涉及一种挖掘地下煤和回收煤层气的新方法,该方法包括定位煤层; 挖矿井到达煤层; 构造通风的地下控制中心,其包括计算机控制面板,其中计算机控制面板控制钻头,空心钻杆轴,可移动液压屏蔽件,可移动树脂屋顶螺栓连接机构和可移动废料挤出装置的运动; 向通风地下控制中心提供采矿人员; 并允许采矿人员操作计算机控制面板,其中它们执行将钻头移动到煤层中以获得骨料煤和煤层气的任务; 将废料挤出煤层的开采空间; 并将煤层气和煤层气转移到地球表面。

    TEMPORARY POWER EQUIPMENT TRANSPORT SYSTEM FOR MOVING MINING EQUIPMENT AND METHOD OF USE
    9.
    发明申请
    TEMPORARY POWER EQUIPMENT TRANSPORT SYSTEM FOR MOVING MINING EQUIPMENT AND METHOD OF USE 审中-公开
    用于移动采矿设备的临时动力设备运输系统及其使用方法

    公开(公告)号:US20100148567A1

    公开(公告)日:2010-06-17

    申请号:US12637033

    申请日:2009-12-14

    摘要: A system for supplying temporary power to a piece of mining equipment includes a power inverter and controller system. The system uses the battery power of a first piece of mining equipment to temporarily move and/or power a second piece of mining equipment. The first piece of mining equipment is preferably a battery powered mobile piece of equipment so that the first piece of mining equipment can move in conjunction with the second piece of mining equipment. The controller can be remote so that an operator can power and/or move the second piece of mining equipment from a distance, either on ground or on the first piece of mining equipment.

    摘要翻译: 用于向采矿设备供给临时电力的系统包括电力逆变器和控制器系统。 该系统使用第一采矿设备的电池电力临时移动和/或对第二采矿设备供电。 第一采矿设备优选地是电池供电的移动设备,使得第一采矿设备可以与第二采矿设备一起移动。 控制器可以是远程的,使得操作者可以在第二采矿设备的地面上或在第一采矿设备上的距离上对第二采矿设备供电和/或移动。

    Mining and Demolition tool
    10.
    发明申请
    Mining and Demolition tool 有权
    采矿与拆除工具

    公开(公告)号:US20100109418A1

    公开(公告)日:2010-05-06

    申请号:US12290982

    申请日:2008-11-05

    IPC分类号: E21C37/00 E21C25/08 E21C25/10

    CPC分类号: E21C35/183 E21C2035/1816

    摘要: Apparatus, methods, and other embodiments associated with a mining and demolition tool are described herein. In an embodiment, a mining and demolition bit tool includes a mining tool base and a mining bit tool tip coupled to the mining bit tool base. The base includes a tapered portion and a stem. The tapered portion includes a first end and a second end, with a surface tapering from the first end to the second end. There is at least one flute positioned along the tapered surface, where the flute is helical in shape. The stem extending from the first end of the tapered portion, and the tip is coupled to the second end of the tapered portion.

    摘要翻译: 本文描述了与采矿和拆除工具相关联的装置,方法和其它实施例。 在一个实施例中,采矿和拆卸钻头工具包括挖掘工具基座和联接到采矿钻头工具基座的采矿钻头工具尖端。 基座包括锥形部分和杆部。 锥形部分包括第一端和第二端,其表面从第一端向第二端逐渐变细。 至少有一个沿锥形表面定位的长槽,其中凹槽的形状是螺旋形的。 所述杆从所述锥形部分的第一端延伸,并且所述尖端联接到所述锥形部分的第二端。