A methane parameter mobile monitoring device for an open-pit mining working face
Patent Information
- Application Number
- CN202522017267.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-19
- Publication Date
- 2026-08-21
- Estimated Expiration
- 2035-09-19
AI Technical Summary
[0003]露天煤矿开采一般是以台阶的采掘工作面进行高效分层开采，在露天煤矿甲烷监测时，传统方式是在露天煤矿某些位置固定布设甲烷监测仪器（即固定式的甲烷气体浓度传感器），随着采掘工作面的逐步推进，固定式的甲烷监测仪器无法进行移动，无法跟进到露天煤矿作业面进行甲烷监测，现有技术方式难以适应露天矿作业面持续迁移、地形复杂多变的动态场景，仅能实现露天煤矿固定点位的环境浓度探测，无法实现露天煤矿作业面附近甲烷逸散的源头监测，若露天煤矿作业面的甲烷逸散致使甲烷浓度过大，会因为机械开采设备工作的摩擦火花导致起火甚至爆炸，存在着安全隐患
（1）本实用新型甲烷参数移动监测装置能够在露天矿工作面随开采进度进行移动，牵引车辆连接牵引转接头并能灵活牵引甲烷参数移动监测装置达到指定位置，实现了跟随开采工作面的掘进而沿着开采工作面推进方向移动的目的；能够对开采工作面的工作区域附近源头进行重点的甲烷浓度和气象监测，提高了露天矿开采工作监测能力，也保障了煤炭开采安全作业要求。
Smart Images
Figure CN224667752U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of methane monitoring in open-pit mining face, and more particularly to a methane parameter movement monitoring device for open-pit mining face. Background Technology
[0002] In open-pit mining operations, after the surface is stripped, the underground coal seam is directly exposed, and the methane adsorbed in the coal seam will be continuously released into the atmosphere. The goaf or subsidence area formed by open-pit mining may connect with the underground methane-bearing coal seam, leading to further methane release. In summary, open-pit coal mining releases methane, which would otherwise exist in adsorbed and free states, into the atmosphere. When methane gas concentration reaches 5%–15%, it can ignite and cause fires, and even explosions, upon encountering a source of ignition (such as mechanical friction sparks or electrical sparks). Monitoring methane gas concentration is a crucial aspect of safe operation in open-pit mines. Furthermore, methane is the second largest greenhouse gas after carbon dioxide, contributing 25% to global warming; the uncontrolled release of methane from coal seams is a key challenge in greenhouse gas management.
[0003] Open-pit coal mining typically involves efficient, layered extraction using bench-type working faces. Traditional methane monitoring in open-pit coal mines involves fixed methane monitoring instruments (i.e., fixed methane gas concentration sensors) deployed at specific locations. However, as the mining face advances, these fixed instruments cannot be moved to monitor methane levels at the working face. Existing technology struggles to adapt to the dynamic environment of continuously shifting working faces and complex, changing terrain. It can only detect environmental concentrations at fixed points within the mine, failing to monitor the source of methane emissions near the working face. If methane emissions from the working face lead to excessively high concentrations, frictional sparks from the mining equipment could cause fires or even explosions, posing a safety hazard. Traditional fixed methane monitoring stations are ill-suited to the dynamic nature of continuously shifting mining faces, resulting in a spatial and temporal misalignment between monitoring locations and mining progress, severely hindering mine safety and greenhouse gas control. Utility Model Content
[0004] The purpose of this invention is to provide a mobile methane parameter monitoring device for open-pit mining faces. This device can move along the mining progress of the open-pit mining face. A traction vehicle connected to a traction adapter can flexibly pull the mobile methane parameter monitoring device to a designated position, thus achieving the purpose of moving along the direction of the mining face as it advances. It can perform key methane concentration and meteorological monitoring near the working area of the mining face, improving the monitoring capabilities of open-pit mining operations and ensuring the safety requirements of coal mining operations.
[0005] The objective of this utility model is achieved through the following technical solution: A mobile methane parameter monitoring device for open-pit mining faces includes a support base with several wheels mounted on its bottom. A support column is detachably fixed to the top of the support base, and a monitoring mounting bracket is fixed to the top of the support column. A methane gas detector for monitoring methane gas concentration data is connected and fixed to the upper part of the support column. An outdoor filter for filtering dust and particulate impurities is installed on the monitoring mounting bracket, and the outdoor filter is connected to the air inlet of the methane gas detector through a gas conduit. A power supply electrically connected to the methane gas detector is installed on the support base. Several cables with ground stakes are detachably connected to the top of the support column. A traction adapter is fixed to one side of the support base.
[0006] To better realize this utility model, an automatic weather station for monitoring temperature, humidity, air pressure, wind direction and wind speed is installed on the monitoring mounting bracket, and the automatic weather station is electrically connected to the power supply.
[0007] Preferably, an inclined support frame is fixed on the bearing base, a plurality of solar panels are installed on the inclined support frame, and a storage battery electrically connected to the solar panels is installed on the bearing base, with the storage battery serving as the power supply.
[0008] Preferably, a power supply box that is electrically connected to a power supply is fixedly connected to the lower part of the support column, and the power supply box is electrically connected to a methane gas detector and an automatic weather station respectively.
[0009] Preferably, two wheels are symmetrically installed on the front side of the bottom of the support base, and two wheels are symmetrically installed on the rear side of the bottom of the support base.
[0010] Preferably, the bottom of the support base is equipped with several telescopic positioning columns with adjustable support height.
[0011] Preferably, the top of the support column is connected to at least three evenly distributed cables.
[0012] Preferably, the methane gas detector is positioned and fixed to the upper part of the support column by a number of arc-shaped clamps.
[0013] Preferably, the power supply box is positioned and fixed to the lower part of the support column by a number of arc-shaped clamps.
[0014] Compared with the prior art, this utility model has the following advantages and beneficial effects: (1) The methane parameter mobile monitoring device of this utility model can move with the mining progress of the open-pit mine working face. The traction vehicle is connected to the traction adapter and can flexibly pull the methane parameter mobile monitoring device to the designated position, thus realizing the purpose of moving along the mining working face advance direction as the mining working face advances. It can carry out key methane concentration and meteorological monitoring of the source near the working area of the mining working face, improve the monitoring capability of open-pit mining operations, and also ensure the safety operation requirements of coal mining.
[0015] (2) When the towing vehicle pulls the methane parameter mobile monitoring device of this utility model to the monitoring position at the front of the open-pit mine working face, all the cables are evenly distributed and pulled out and fixed to the ground of the open-pit mine working face by their respective ground nails. At the same time, all the telescopic positioning columns stably support the bearing base and the various components on the bearing base, so as to realize that the methane parameter mobile monitoring device is stably located at the monitoring position without moving or shaking, thus improving the monitoring stability performance.
[0016] (3) As a remote monitoring terminal, the display memory of this utility model can realize the monitoring of remote meteorological data and methane concentration data, which facilitates real-time monitoring data viewing and methane monitoring and early warning, and also facilitates subsequent methane exceedance early warning and methane diffusion inversion.
[0017] (4) This utility model is applicable to the monitoring of methane gas concentration in open-pit mining face. It can accurately detect the methane concentration at the source of the mining area, providing accurate and reliable data support for the subsequent accurate calculation of methane emissions. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 for Figure 1 A structural diagram from the rear view; Figure 3 for Figure 1 A schematic diagram of the structure from a side view.
[0019] The names corresponding to the reference numerals in the attached figures are as follows: 1-Bearing base, 2-Methane gas detector, 3-Inclined support frame, 4-Support column, 41-Arch-shaped clamp, 5-Solar panel, 6-Battery, 7-Power supply box, 8-Monitoring mounting bracket, 9-Automatic weather station, 10-Outdoor filter, 11-Gas conduit, 12-Cable, 13-Ground stake, 14-Ground, 15-Traction adapter, 16-Walking wheel, 17-Telescopic positioning column. Detailed Implementation
[0020] The present invention will be further described in detail below with reference to the embodiments: Example
[0021] like Figures 1 to 3 As shown, a mobile monitoring device for methane parameters in an open-pit mine face includes a support base 1. Several wheels 16 are mounted on the bottom of the support base 1. Preferably, two wheels 16 are symmetrically mounted on the front side of the bottom of the support base 1 (the front side in the direction of travel of the support base 1, where a traction adapter 15 is installed). These two wheels 16 can follow a traction vehicle, and travel includes turning and forward movement. Two wheels 16 are symmetrically mounted on the rear side of the bottom of the support base 1. A traction adapter 15 is fixed to one side of the support base 1. In use, a traction vehicle is configured, and the rear of the traction vehicle is connected to the traction adapter 15, so that the support base 1 is mounted behind the traction vehicle and follows it during operation.
[0022] The top of the bearing base 1 is detachably fixed with a supporting column 4, such as Figure 1 As shown, a column base is fixed to the bottom of the support column 4, and the column base is detachably connected and fixed to the top of the bearing base 1 by several screws. A monitoring mounting bracket 8 is fixed to the top of the support column 4. (See attached image.) Figure 1 , Figure 2 The monitoring mounting bracket 8 can adopt an L-shaped support arm, which is a certain distance away from the support column 4, so that the monitoring of methane concentration and meteorological data will not be interfered with by the support column 4. A methane gas detector 2 for monitoring methane gas concentration data is connected and fixed to the upper part of the support column 4. Figure 2As shown, preferably, the methane gas detector 2 is positioned and fixed to the upper part of the support column 4 by several arc-shaped clamps 41; an outdoor filter 10 for filtering dust and particulate impurities is installed on the monitoring mounting bracket 8, and the outdoor filter 10 is connected to the air inlet of the methane gas detector 2 through a gas conduit 11. A power supply that is electrically connected to the methane gas detector 2 is installed on the bearing base 1. The outdoor filter 10 of this utility model can be either electrically powered or non-electrically powered. If an electrically powered filter is used, the outdoor filter 10 is electrically connected to a power supply. A sampling fan electrically connected to the power supply can be installed at the air inlet of the outdoor filter 10. The outdoor filter 10 samples the air near the open-pit mine working face, filtering out dust and particulate impurities. The air free of dust and particulate impurities (filtering and removing dust and particulate impurities effectively protects the methane gas detector 2) enters the methane gas detector 2 through the gas conduit 11. The methane gas detector 2 monitors the methane concentration of the sampled air and obtains methane concentration data over time. The methane gas detector 2 of this utility model uses an existing, mature methane gas detector suitable for open-pit mines (the purpose of this utility model is not to innovate the structure of the methane gas detector).
[0023] The top of the supporting column 4 is detachably connected to several cables 12 with ground stakes 13, such as... Figure 1 As shown, at least three evenly distributed cables 12 are connected to the top of the support column 4. When the methane parameter movement monitoring device moves to the monitoring position at the front of the open-pit mine working face, the three cables 12 are pulled out evenly and fixed to the ground 14 of the open-pit mine working face by their respective ground nails 13. The three cables 12 tighten the positioning bearing base 1 from three evenly distributed angle directions, so the support column 4 will not sway due to strong winds. The support column 4 supports the methane gas detector 2 and the automatic weather station 9 to a certain height, which is conducive to increasing their radiation range. The support column 4 supports the automatic weather station 9 to a certain height, so that the automatic weather station 9 can better realize meteorological data monitoring.
[0024] An automatic weather station 9 for monitoring temperature, humidity, air pressure, wind direction, and wind speed is installed at the top of the monitoring mounting bracket 8. The automatic weather station 9 is electrically connected to a power supply. The automatic weather station 9 monitors meteorological data such as temperature, humidity, air pressure, wind direction, and wind speed near the open-pit mine working face. This utility model has a display memory. The real-time meteorological data monitored by the automatic weather station 9 is transmitted and stored in the display memory. The methane concentration data monitored by the methane gas detector 2 is also transmitted and stored in the display memory in real time. Meteorological data and methane concentration data at a certain point in time can be viewed and retrieved in the display memory. Using the meteorological data and methane concentration data collected in real time over time, it is convenient to carry out methane exceedance early warning and methane diffusion inversion. In this embodiment, the automatic weather station 9 adopts an existing small automatic weather station suitable for open-pit mines. The automatic weather station includes a vibrating cylinder barometer, a platinum resistance temperature sensor, a humidity-sensitive capacitive humidity sensor, a single-wing wind direction sensor, a wind cup anemometer, and a tipping bucket rain gauge.
[0025] In some embodiments, such as Figure 1 , Figure 2 As shown, a slanted support frame 3 is fixed on the support base 1, and several solar panels 5 are installed on the slanted support frame 3. In this embodiment, two solar panels 5 are installed side by side on the slanted support frame 3 on the support base 1. A storage battery 6 is installed on the support base 1 and is electrically connected to the solar panel 5 (the storage battery 6 corresponds one-to-one with the solar panel 5. The solar panel 5 absorbs solar heat energy and converts the heat energy into electrical energy and stores it in the storage battery 6). The storage battery 6 serves as the power supply.
[0026] In some embodiments, a power supply box 7, which is electrically connected to a power supply, is fixedly connected to the lower part of the support column 4. Preferably, the power supply box 7 is positioned and fixed to the lower part of the support column 4 by several arc-shaped clamps 41. The power supply box 7 is electrically connected to the methane gas detector 2 and the automatic weather station 9, respectively. Several telescopic positioning columns 17 with adjustable support height are installed at the bottom of the bearing base 1. When the methane parameter mobile monitoring device of this utility model is pulled to the monitoring position at the front of the open-pit mine working face, the telescopic positioning columns 17 extend to support the bearing base 1, so that the methane parameter mobile monitoring device of this utility model is stably supported on the ground 14 of the open-pit mine working face. The telescopic positioning column 17 can be a threaded lifting cylinder assembly, which includes an inner threaded cylinder and an outer threaded support rod. The bottom end of the outer threaded support rod has a support, and the upper part of the outer threaded support rod is threadedly telescopically connected to the inside of the inner threaded cylinder. The outer threaded support rod can telescopically move inside the inner threaded cylinder and adjust the support height. Of course, the telescopic positioning column 17 can also be other structures with adjustable lifting height.
[0027] In use, a tractor vehicle is configured, with its rear end connected to the tractor adapter 15. The supporting base 1 is then mounted behind the tractor vehicle and follows it during operation. The tractor vehicle pulls the mobile methane parameter monitoring device to the monitoring position at the front of the open-pit mine working face. All cables 12 are evenly distributed and pulled out, then fixed to the ground 14 of the open-pit mine working face via their corresponding ground nails 13. The support column 4 supports the methane gas detector 2 and the automatic weather station 9 to a certain height, which helps to increase their radiation range. The telescopic positioning column 17 extends to the correct height (adjusted to the correct support height) and supports the supporting base 1. All telescopic positioning columns 17 stably support the supporting base 1 and its components. The outdoor filter 10 samples the air near the open-pit mine working face, filtering out dust, particulate impurities, etc., allowing the dust-free, particulate-impurity-free air to enter the methane gas detector 2 through the gas duct 11. The methane gas detector 2 monitors the methane concentration of the sampled air and obtains methane concentration data over time. Automatic weather station 9 monitors meteorological data such as temperature, humidity, air pressure, wind direction, and wind speed near the open-pit mine working face. This invention features a display memory. Real-time meteorological data monitored by automatic weather station 9 is transmitted and stored in the display memory. Methane concentration data monitored by methane gas detector 2 is also transmitted and stored in the display memory in real time. Meteorological data and methane concentration data at a specific point in time can be viewed and retrieved in the display memory. Utilizing the real-time collected meteorological and methane concentration data, this invention records and stores meteorological and methane concentration data in real time through the display memory, facilitating real-time monitoring data viewing and methane monitoring and early warning, as well as subsequent methane exceedance warnings and methane diffusion inversion. The display memory of this invention serves as a remote monitoring terminal. The methane gas detector 2 and automatic weather station 9 are equipped with a network transmission module, enabling remote monitoring of meteorological and methane concentration data. This invention's methane parameter mobile monitoring device can move along the direction of the mining face as it advances.
[0028] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A methane parameter movement monitoring device for open-pit mining faces, characterized in that: The device includes a support base with several wheels mounted on its bottom. A support column is detachably fixed to the top of the support base, and a monitoring mounting bracket is fixed to the top of the support column. A methane gas detector for monitoring methane gas concentration data is connected and fixed to the upper part of the support column. An outdoor filter for filtering dust and particulate impurities is installed on the monitoring mounting bracket, and the outdoor filter is connected to the air inlet of the methane gas detector through a gas conduit. A power supply electrically connected to the methane gas detector is installed on the support base. Several cables with ground stakes are detachably connected to the top of the support column. A traction adapter is fixed to one side of the support base.
2. The methane parameter movement monitoring device for open-pit mining faces according to claim 1, characterized in that: The monitoring mounting bracket is equipped with an automatic weather station for monitoring temperature, humidity, air pressure, wind direction, and wind speed. The automatic weather station is electrically connected to the power supply.
3. The methane parameter movement monitoring device for open-pit mining faces according to claim 1, characterized in that: An inclined support frame is fixed on the bearing base, and several solar panels are installed on the inclined support frame. A storage battery electrically connected to the solar panels is installed on the bearing base, and the storage battery serves as the power supply.
4. The methane parameter movement monitoring device for open-pit mining faces according to claim 2, characterized in that: The lower part of the support column is connected to a power supply box that is electrically connected to the power supply. The power supply box is electrically connected to a methane gas detector and an automatic weather station.
5. A methane parameter movement monitoring device for open-pit mining faces according to claim 1, characterized in that: Two wheels are symmetrically installed on the front side of the bottom of the support base, and two wheels are symmetrically installed on the rear side of the bottom of the support base.
6. A methane parameter movement monitoring device for open-pit mining faces according to claim 1 or 5, characterized in that: The bottom of the support base is equipped with several telescopic positioning columns that can be adjusted to support height.
7. A methane parameter movement monitoring device for open-pit mining faces according to claim 1, characterized in that: The top of the support column is connected to at least three evenly distributed cables.
8. A methane parameter movement monitoring device for open-pit mining faces according to claim 1, characterized in that: The methane gas detector is positioned and fixed to the upper part of the support column by several arc-shaped clamps.
9. A methane parameter movement monitoring device for open-pit mining faces according to claim 4, characterized in that: The power supply box is positioned and fixed to the lower part of the support column by several arc-shaped clamps.