TEST METHOD FOR GAS AND TEMPERATURE DISTRIBUTION IN A GOAF

    公开(公告)号:US20240142421A1

    公开(公告)日:2024-05-02

    申请号:US17974425

    申请日:2022-10-26

    CPC classification number: G01N33/0027 B65H75/4484 G01K11/32 E21F17/18

    Abstract: The present disclosure includes a method of testing for gas and temperature distribution in a goaf, wherein the test device comprises a cable coupled to a cable dragging machine, the cable including a test end configured to be buried in the goaf; a gas temperature tester configured to test a gas for composition and temperature; and a gas pump configured to continuously pump gas from the test end and transmit it to the gas temperature tester. In some examples, the method comprises placing the test end of the cable in the goaf. According to some examples, the method comprises starting the cable dragging machine and starting the gas pump simultaneously with starting the cable dragging machine. The method may comprise withdrawing the cable, via the cable dragging machine, at a constant speed and analyzing, via the gas temperature tester, the composition and temperature of the gas.

    Method for measuring gas pressure of close-distance seam group simultaneously

    公开(公告)号:US11959379B2

    公开(公告)日:2024-04-16

    申请号:US18505882

    申请日:2023-11-09

    CPC classification number: E21B47/06 C04B28/00 E21F17/18

    Abstract: Disclosed is a method for measuring gas pressure of a close-distance seam group simultaneously, including the following steps: constructing a pressure-measuring drill hole inclined downwards; lowering a first seam piezometer tube, lowering a baffle and a polyurethane blocking material after a tube head reaching a lowermost seam; and installing a gas pressure gauge; lowering a second seam piezometer tube, lowering the baffle and the polyurethane blocking material after the tube head reaching a second layer of seam; and installing the gas pressure gauge; lowering a nth seam piezometer tube, lowering the baffle and the polyurethane blocking material after the tube head reaching a nth layer of seam; and installing the gas pressure gauge; injecting a high-water and quick-solidifying material into the drill hole; and connecting the gas pressure gauges through optical fibers, and connecting the gas pressure gauges with a ground control system.

    Cable handling system for longwall mining machines

    公开(公告)号:US11927097B2

    公开(公告)日:2024-03-12

    申请号:US17842942

    申请日:2022-06-17

    CPC classification number: E21C35/046 E21F17/18

    Abstract: A method of operating a cable handling system of a longwall mining machine having a shearer movable along a pan line to mine material along a mine face, the cable handling system including:



    i) a service line configured to carry one or more supply lines to the shearer for facilitating shearer operation,
    ii) a plurality of interconnected trays to accommodate the service line,
    iii) a plurality of sensor nodes distributed along a length of the service line, and
    iv) a plurality of transceivers distributed along a length of the pan line, the method comprising:

    a) sensing orientation, acceleration and/or position data of the service line using the plurality of sensor nodes,
    b) using the plurality of transceivers to receive the orientation, acceleration and/or position data from the plurality of sensor nodes and to transmit the orientation, acceleration and/or position data to a controller, and
    c) detecting, by the controller, an actual or imminent failure mode of the service line using analysis of the orientation, acceleration and/or position data from the plurality of the sensor nodes.

    Ceramic smart impact panel
    6.
    发明授权

    公开(公告)号:US11733194B2

    公开(公告)日:2023-08-22

    申请号:US16892867

    申请日:2020-06-04

    Abstract: An impact panel for protecting mining equipment may include a plurality of ceramic tiles affixed to a base plate. The impact panel may further include at least one fixing hole disposed within the plurality of ceramic tiles and the base plate with a metal frame disposed around an outer peripheral edge of the plurality of ceramic tiles that is also affixed to the base plate. The impact panel may have at least one plug disposed inside the at least one fixing hole to seamlessly cover the at least one fixing hole. The panels may also be wired with sensors that will communicate with process control circuits allowing data collection on remote process and remote mining equipment.

    HORIZON MONITORING FOR LONGWALL SYSTEM
    7.
    发明申请

    公开(公告)号:US20180355720A1

    公开(公告)日:2018-12-13

    申请号:US16107688

    申请日:2018-08-21

    CPC classification number: E21F17/18 E21C25/06 E21C35/24

    Abstract: A method of monitoring a longwall shearing mining machine in a longwall mining system, wherein the shearing mining machine includes a shearer having a first cutter drum and a second cutter drum, includes receiving, by a processor, shearer position data over a shear cycle. The horizon profile data includes information regarding at least one of the group comprising of a position and angle of the shearer, a position of the first cutter drum, and a position of the second cutter drum. The method also includes analyzing the shearer position data, by the processor, to determine whether a position failure occurred during the shear cycle based on whether the computed horizon profile data was within normal operational parameters during the shear cycle, and generating an alert upon determining that the position failure occurred during the shear cycle.

    DETECTING SUMP DEPTH OF A MINER
    9.
    发明申请

    公开(公告)号:US20160102551A1

    公开(公告)日:2016-04-14

    申请号:US14970508

    申请日:2015-12-15

    Abstract: Systems and methods for operating a mining machine. One system includes a controller, a stationary object, and a radar device. The radar device transmits radio waves toward the stationary object and detects reflections of the radio waves. The controller obtains timing information regarding the radio waves and the reflections. Based on the timing information, the controller is configured to determine a first distance between the radar device and the stationary object before sumping the mining machine into material and a second distance between the radar device and the stationary object after sumping the mining machine into the material. The controller is also configured to determine a sump depth of the mining machine based on the first distance and the second distance, compare the determined sump depth to a predetermined sump depth, and perform at least one automatic action when the determined sump depth does not satisfy the predetermined sump depth.

    CONTEXT-AWARE COLLISON DEVICES AND COLLISON AVOIDANCE SYSTEM COMPRISING THE SAME
    10.
    发明申请
    CONTEXT-AWARE COLLISON DEVICES AND COLLISON AVOIDANCE SYSTEM COMPRISING THE SAME 有权
    上下文识别装置和包含其的COLLISON避风系统

    公开(公告)号:US20150274072A1

    公开(公告)日:2015-10-01

    申请号:US14435418

    申请日:2013-10-11

    Abstract: Personnel and vehicle collision avoidance devices configured to be used in collision avoidance systems are disclosed. The collision avoidance devices are configured to be aware of the context (e.g. position, location, state, status, etc.) in which the person or vehicle is. This awareness allows the devices to avoid transmitting non-hazardous proximity warnings when the context does not warrant the transmission of proximity warnings, and to transmit special critical proximity warnings when the context warrants the transmission of such proximity warnings. To detect the context, the devices comprise one or more context-awareness mechanisms (e.g. user input interfaces, sensors, infra-red receivers, etc.), each of which being capable of detecting one or more particular contexts. A collision avoidance system comprising these personnel and vehicle collision avoidance devices is also presented.

    Abstract translation: 公开了构造成用于防撞系统的人员和车辆碰撞避免装置。 防撞装置被配置为知道人或车辆所在的上下文(例如,位置,位置,状态,状态等)。 这种意识允许设备避免在上下文不保证传递接近警告时传送非危险的接近警告,并且当上下文保证传送这种接近警告时传输特殊的临界接近警告。 为了检测上下文,设备包括一个或多个上下文感知机制(例如,用户输入接口,传感器,红外接收机等),其中每一个能够检测一个或多个特定上下文。 还提出了包括这些人员和车辆碰撞避免装置的防撞系统。

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