WO2024113561A1 - 一种充填料浆输送系统及其控制方法 - Google Patents

一种充填料浆输送系统及其控制方法 Download PDF

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WO2024113561A1
WO2024113561A1 PCT/CN2023/084629 CN2023084629W WO2024113561A1 WO 2024113561 A1 WO2024113561 A1 WO 2024113561A1 CN 2023084629 W CN2023084629 W CN 2023084629W WO 2024113561 A1 WO2024113561 A1 WO 2024113561A1
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filling
pipeline
filling slurry
discharge
port
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PCT/CN2023/084629
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English (en)
French (fr)
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孙冠男
巴家泓
周育
刘召胜
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中冶北方（大连）工程技术有限公司
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Publication of WO2024113561A1 publication Critical patent/WO2024113561A1/zh

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    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
    • E21F15/00—Methods or devices for placing filling-up materials in underground workings
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
    • E21F15/00—Methods or devices for placing filling-up materials in underground workings
    • E21F15/06—Filling-up mechanically

Definitions

  • the invention belongs to the field of mine filling slurry stirring, in particular to a filling slurry conveying system and a control method thereof.
  • the transportation of mine filling slurry is an important part of underground mine filling, including gravity conveying and pump pressure conveying.
  • a conveying method is selected to build a filling conveying system based on whether the gravitational potential energy of the filling slurry can overcome the flow resistance required to transport the filling slurry to the ore filling area at each horizontal end of the mine.
  • the pump pressure conveying method is selected; otherwise, the gravity conveying method is selected.
  • mines that use pump pressure transportation often have a large part of the area that meets the conditions for gravity transportation, except for the end ore filling area that cannot meet the conditions for gravity transportation.
  • a single pump pressure transportation method is selected, it will inevitably cause waste of electricity and increase the filling cost.
  • some mines use underground chambers and install filling industrial pumps in the chambers for relay pressurized transportation, but this increases the underground engineering workload, and the filling industrial pumps are not easy to repair and maintain underground; some mines set up two systems on the surface, one using gravity transportation and the other using pump pressure transportation, but it increases the number of systems and infrastructure investment, and the management is complicated.
  • the purpose of the present invention is to provide a filling slurry conveying system and a control method thereof, so that a set of system can realize two conveying modes of filling slurry: gravity conveying and pump pressure conveying, to meet the filling and conveying needs of different filling areas underground, and the switching between the two modes is flexible, saving energy consumption, and reducing investment and filling costs.
  • a filling slurry conveying system of the present invention comprises a mixer and a filling slurry conveying pipeline, wherein the filling slurry conveying pipeline is a three-way conveying pipe, which is composed of a gravity feed port of the filling slurry conveying pipeline, a pump feed port of the filling slurry conveying pipeline and a discharge pipe of the filling slurry conveying pipeline, and further comprises a first discharge pipeline, a reversing valve, a first feed pipeline, a receiving box, a second discharge pipeline, a second feed pipeline, a filling industrial pump and a third discharge pipeline.
  • the filling slurry conveying pipeline is a three-way conveying pipe, which is composed of a gravity feed port of the filling slurry conveying pipeline, a pump feed port of the filling slurry conveying pipeline and a discharge pipe of the filling slurry conveying pipeline, and further comprises a first discharge pipeline, a reversing valve, a first feed pipeline, a receiving box,
  • the discharge port of the mixer is connected to the feed port of the reversing valve through a first discharge pipe, one discharge port of the reversing valve is connected to the feed port of the receiving box through a first feed pipe, the other discharge port of the reversing valve is connected to the feed port of the filling industrial pump through a second feed pipe, and the discharge port of the receiving box is connected to the filling slurry feed port.
  • the gravity feed port of the delivery pipeline is connected through a second discharge pipeline, the discharge port of the filling industrial pump is connected to the pumping feed port of the filling slurry delivery pipeline through a third discharge pipeline, and the discharge pipe of the filling slurry delivery pipeline is arranged in the filling borehole, and the end extends to the underground filling area.
  • an electric valve I, a flow meter and a concentration meter are provided on the first discharge pipe.
  • the reversing valve is an electric reversing valve.
  • the second discharge pipe is provided with an electric valve II
  • the third discharge pipe is provided with an electric valve III.
  • the three-way delivery pipe is a Y-shaped pipe or a T-shaped pipe, which is arranged in the filling borehole, and the end extends to the underground filling area.
  • a remote pressure monitoring device is set every 500m to 600m from the bottom of the filling borehole to the underground filling area.
  • the present invention further comprises an automatic control system, wherein the automatic control system is electrically connected to the reversing valve, the electric valve I, the electric valve II and the electric valve III.
  • a control method for a filling slurry conveying system of the present invention adopts the above filling slurry conveying system, characterized in that the pipeline conveying resistance between each pressure monitoring point can be calculated point by point through the pressure value measured by the remote pressure monitoring device at each pressure monitoring point and the distance between each pressure monitoring point, and then the distance between each pressure monitoring point and the underground filling area can be used to determine the pressure value required for the filling slurry to be conveyed to the underground filling area by gravity;
  • the working outlet of the reversing valve is switched to the outlet connected to the first feed pipe, and the stirred filling slurry is gravity conveyed to the receiving box by gravity conveying. Then, the electric valve II on the second discharge pipe is opened to allow the filling slurry to enter the filling slurry conveying pipe through the gravity feed port of the filling slurry conveying pipe, and be gravity conveyed to the underground filling area.
  • any one of the pressure monitoring points is lower than the pressure value required for gravity transportation of the filling slurry from the pressure monitoring point to the underground filling area, it is necessary to adopt a pump pressure transportation method, switch the working outlet of the reversing valve to the outlet connected to the second feed pipe, close the electric valve II on the second feed pipe, and open the electric valve III on the third feed pipe.
  • the filling slurry enters the filling slurry conveying pipeline through the pumping feed port of the filling slurry conveying pipeline, and is pumped to the underground filling area.
  • One system can realize two delivery modes of filling slurry: gravity delivery and pump pressure delivery, meeting the filling and delivery requirements of different filling areas underground;
  • FIG1 is a schematic structural diagram of a filling slurry conveying system according to the present invention.
  • a filling slurry conveying system of the present invention comprises a mixer 1 and a filling slurry conveying pipeline, wherein the filling slurry conveying pipeline comprises a first discharge pipeline 2, a reversing valve 3, a first feed pipeline 4, a receiving box 5, a second discharge pipeline 6, a second feed pipeline 7, a filling industrial pump 8, and a third discharge pipeline 9.
  • the discharge port of the mixer 1 is connected to the feed port of the reversing valve 3 through a first discharge pipe 2, one discharge port of the reversing valve 3 is connected to the feed port of the receiving box 5 through a first feed pipe 4, the other discharge port of the reversing valve 3 is connected to the feed port of the filling industrial pump 8 through a second feed pipe 7, the discharge port of the receiving box 5 is connected to the gravity feed port 100 of the filling slurry conveying pipeline 10 through a second discharge pipe 6, and the discharge port of the filling industrial pump 8 is connected to the pumping feed port 101 of the filling slurry conveying pipeline 10 through a third discharge pipe 9.
  • the present invention provides an electric valve I20, a flow meter 21 and a concentration meter 22 on the first discharge pipe.
  • the flow meter 21 and the concentration meter 22 are used to control the system to record historical data, mainly corresponding to the calculated unit resistance under certain flow and concentration conditions, so as to facilitate automatic switching of the conveying mode according to the flow, concentration and conveying distance in the later stage.
  • the reversing valve 3 described in the present invention is an electric reversing valve.
  • the second discharge pipe 6 of the present invention is provided with an electric valve II 60
  • the third discharge pipe 9 is provided with an electric valve III 90 .
  • the three-way delivery pipe is a Y-shaped delivery pipe or a T-shaped delivery pipe, which is arranged in the filling borehole, and the end extends to the underground filling area.
  • a remote pressure monitoring device is set every 500m to 600m from the bottom of the filling borehole to the underground filling area.
  • the accompanying drawings show an embodiment in which a Y-shaped delivery pipe is arranged in a filling borehole.
  • the gravity feed port of the filling slurry conveying pipeline of the conveying pipe is arranged beside the discharge pipe of the filling slurry conveying pipeline, while the pumping feed port of the filling slurry conveying pipeline is connected with the discharge pipe of the filling slurry conveying pipeline. This structural angle is more reasonable and the gravity effect is better.
  • the present invention further comprises an automatic control system, wherein the automatic control system is electrically connected to the reversing valve 3 , the electric valve I20 , the electric valve II60 , the electric valve III90 , the remote pressure monitoring device, the flow meter 21 and the concentration meter 22 .
  • the automatic control system is electrically connected to the reversing valve 3 , the electric valve I20 , the electric valve II60 , the electric valve III90 , the remote pressure monitoring device, the flow meter 21 and the concentration meter 22 .
  • any one of the pressure monitoring points is lower than the pressure value required for gravity transportation of the filling slurry from the pressure monitoring point to the underground filling area, it is necessary to adopt a pump pressure transportation method.
  • the filling slurry enters the filling slurry conveying pipeline through the pumping feed port of the filling slurry conveying pipeline, and is pumped to the underground filling area.
  • the filling slurry conveying system and control method thereof realize two conveying modes in one system, which can realize both gravity conveying and pump pressure conveying, thus meeting the filling and conveying needs of different filling areas underground, and the switching between the two modes is flexible, which saves investment, saves energy consumption, and reduces filling costs.

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Air Transport Of Granular Materials (AREA)

Abstract

一种充填料浆输送系统及其控制方法，包括搅拌机（1）和充填料浆输送管道（10），充填料浆输送管道（10）为三通输送管，还包括第一出料管道（2）、换向阀（3）、第一进料管道（4）、受料箱（5）、第二出料管道（6）、第二进料管道（7）、充填工业泵（8）及第三出料管道（9），搅拌机（1）的出料口与换向阀（3）进料口通过第一出料管道（2）连接，换向阀（3）的一个出料口与受料箱（5）的进料口通过第一进料管道（4）连接，另一个出料口与充填工业泵（8）的进料口通过第二进料管道（7）连接，受料箱（5）的出料口与充填料浆输送管道（10）的自流进料口（100）通过第二出料管道（6）连接，充填工业泵（8）的出料口与充填料浆输送管道（10）的泵送进料口（101）通过第三出料管道（9）连接。一套系统实现充填料浆自流与泵压输送两种模式，满足井下不同充填区域的充填输送需求，切换灵活，节约能耗。

Description

一种充填料浆输送系统及其控制方法 技术领域
本发明属于矿山充填料浆搅拌领域，特别是一种充填料浆输送系统及其控制方法。
背景技术
矿山充填料浆的输送是矿山井下充填的重要环节，包括自流输送和泵压输送两种输送方式。一般根据充填料浆的重力势能能否克服充填料浆输送至矿山井下各水平端部矿体充填区域所需的流动阻力，来选择一种输送方式来建设充填输送系统。当充填料浆的重力势能不能够克服充填料浆输送至矿山井下各水平端部矿体充填区域所需的流动阻力时，则选择泵压输送方式；反之，则选择自流输送方式。
采用泵压输送方式的矿山，在实际生产过程中往往存在除端部矿体充填区域不能满足自流输送条件外，仍有很大一部分区域是具备自流输送条件的，但因为选择了单一的泵压输送方式，必然造成了电能的浪费，增加了充填成本。目前，为了避免浪费，降低成本，有的矿山采用在井下开凿硐室，并在硐室内安装充填工业泵接力加压输送，但增加井下工程量，且充填工业泵在井下不便于检修、维护；有的矿山则在地表设置两套系统，一套采用自流输送，另一套采用泵压输送，但增加了系统数量和基建投资，且管理复杂。
发明内容
本发明的目的在于提供一种充填料浆输送系统及其控制方法，使一套系统可以实现充填料浆自流输送与泵压输送两种输送模式，满足井下不同充填区域的充填输送需求，且两种模式间切换灵活，节约能耗，减少投资和充填成本。
本发明的一种充填料浆输送系统，包括搅拌机和充填料浆输送管道，其特征在于，所述的充填料浆输送管道为三通输送管，由充填料浆输送管道的自流进料口、充填料浆输送管道的泵送进料口和充填料浆输送管道的排料管所组成，还包括第一出料管道、换向阀、第一进料管道、受料箱、第二出料管道、第二进料管道、充填工业泵及第三出料管道，
所述搅拌机的出料口与换向阀的进料口通过第一出料管道连接，所述换向阀的一个出料口与受料箱的进料口通过第一进料管道连接，换向阀的另一个出料口与充填工业泵的进料口通过第二进料管道连接，所述受料箱的出料口与充填料浆输 送管道的自流进料口通过第二出料管道连接，所述充填工业泵的出料口与充填料浆输送管道的泵送进料口通过第三出料管道连接，充填料浆输送管道的排料管布置于充填钻孔内，末端延伸至井下充填区域。
优选地，在所述的第一出料管道上设有电动阀门Ⅰ、流量计和浓度计。
优选地，所述的换向阀为电动换向阀。
优选地，所述的第二出料管道上设有电动阀门Ⅱ，所述的第三出料管道上设有电动阀门Ⅲ。
优选地，述的三通输送管为Y字型管道或T字型管道，布置于充填钻孔内，末端延伸至井下充填区域，在所述充填料浆输送管道的排料管上，自充填钻孔底部至井下充填区域间每隔500m～600m设置一个远传压力监测装置。
优选地，本发明还包括自动控制系统，所述的自动控制系统电性连接有换向阀、电动阀门Ⅰ、电动阀门Ⅱ和电动阀门Ⅲ。
本发明的一种充填料浆输送系统的控制方法，采用上述充填料浆输送系统，其特征在于，通过各压力监测点位的远传压力监测装置所测定的压力值及各压力监测点位间的距离，可以逐点计算出各压力监测点位间的管道输送阻力，再各压力监测点位与井下充填区域间的距离，进而可以判断出充填料浆自流输送至井下充填区域所需要的压力值；
当其中任意一个压力监测点位的压力值大于该压力监测点位至井下充填区域间充填料浆自流输送所需要的压力值时，将换向阀的工作出料口切换至与第一进料管道连接的出料口，采用自流输送方式，使搅拌好的充填料浆自流输送至受料箱内，然后开启第二出料管道上的电动阀门Ⅱ，使充填料浆经充填料浆输送管道的自流进料口进入充填料浆输送管道，自流输送至井下充填区域；
当其中任意一个压力监测点位的压力值小于该压力监测点位至井下充填区域间充填料浆自流输送所需要的压力值时，则需要采用泵压输送方式，将换向阀的工作出料口切换至与第二进料管道连接的出料口，同时关闭第二出料管道上的电动阀门Ⅱ，并开启第三出料管道上的电动阀门Ⅲ，经充填工业泵加压后，使充填料浆经充填料浆输送管道的泵送进料口进入充填料浆输送管道，泵压输送至井下充填区域。
本发明的有益效果是：
(1)一套系统可以实现充填料浆自流输送与泵压输送两种输送模式，满足井下不同充填区域的充填输送需求；
(2)两种模式间切换灵活、方便，可远程操控，降低工人劳动强度；
(3)节约能耗，减少投资和充填成本，避免造成浪费。
附图说明
图1为本发明的充填料浆输送系统结构示意图；
图中序号说明：1-搅拌机、2-第一出料管道、3-换向阀、4-第一进料管道、5-受料箱、6-第二出料管道、7-第二进料管、8-充填工业泵、9-第三出料管道、10-充填料浆输送管道、20-电动阀门Ⅰ、21-流量计、22-浓度计、60-电动阀门Ⅱ、90-电动阀门Ⅲ、100-充填料浆输送管道的自流进料口、101-充填料浆输送管道的泵送进料口。
具体实施方式
下面结合附图对本发明作进一步说明。
如图1所示，本发明的本发明的一种充填料浆输送系统，包括搅拌机1和充填料浆输送管道，其特征在于，所述的充填料浆输送管道包括第一出料管道2、换向阀3、第一进料管道4、受料箱5、第二出料管道6、第二进料管道7、充填工业泵8、第三出料管道9，
所述搅拌机1的出料口与换向阀3的进料口通过第一出料管道2连接，所述换向阀3的一个出料口与受料箱5的进料口通过第一进料管道4连接，换向阀3的另一个出料口与充填工业泵8的进料口通过第二进料管道7连接，所述受料箱5的出料口与充填料浆输送管道10的自流进料口100通过第二出料管道6连接，所述充填工业泵8的出料口与充填料浆输送管道10的泵送进料口101通过第三出料管道9连接。
本发明在所述的第一出料管道上设有电动阀门Ⅰ20、流量计21和浓度计22，其流量计21和浓度计22的作用在于控制系统记录历史数据，主要是在某一流量和浓度条件下，与计算出的单位阻力对应，便于后期根据流量、浓度和输送距离，自动切换输送模式。
本发明所述的换向阀3为电动换向阀。
本发明所述的第二出料管道6上设有电动阀门Ⅱ60，所述的第三出料管道9上设有电动阀门Ⅲ90。
本发明优选地，所述的三通输送管为Y字型输送管或T字型输送管，布置于充填钻孔内，末端延伸至井下充填区域，在所述充填料浆输送管道的排料管上，自充填钻孔底部至井下充填区域间每隔500m～600m设置一个远传压力监测装置。
附图中给出了通输送管为Y字型输送管布置于充填钻孔内的实施例，其Y字型 输送管的充填料浆输送管道的自流进料口设置在填料浆输送管道的排料管旁侧，而充填料浆输送管道的泵送进料口则与充填料浆输送管道的排料管贯通，这种结构角度更合理，自流效果更佳。
优选地，本发明还包括自动控制系统，所述的自动控制系统电性连接有换向阀3、电动阀门Ⅰ20、电动阀门Ⅱ60、电动阀门Ⅲ90、远传压力监测装置、流量计21和浓度计22。
本发明的一种充填料浆输送系统的控制方法，采用上述充填料浆输送系统，其特征在于，通过各压力监测点位的远传压力监测装置所测定的压力值及各压力监测点位间的距离，可以逐点计算出各压力监测点位间的管道输送阻力，再各压力监测点位与井下充填区域间的距离，进而可以判断出充填料浆自流输送至井下充填区域所需要的压力值；并将其输入自动控制系统中，相邻两个压力监测点位间的管道输送单位阻力i＝两个压力监测点位的压力差△P/两个压力监测点位的距离△L。
当其中任意一个压力监测点位的压力值大于该压力监测点位至井下充填区域间充填料浆自流输送所需要的压力值时，先关闭电动阀门Ⅰ，将换向阀3的工作出料口切换至与第一进料管道4连接的出料口，然后重新开启电动阀门Ⅰ，采用自流输送方式，使搅拌好的充填料浆自流输送至受料箱5内，然后开启第二出料管道6上的电动阀门Ⅱ60，使充填料浆经充填料浆输送管道的自流进料口100进入充填料浆输送管道10，自流输送至井下充填区域；
当其中任意一个压力监测点位的压力值小于该压力监测点位至井下充填区域间充填料浆自流输送所需要的压力值时，则需要采用泵压输送方式，先关闭电动阀门Ⅰ，将换向阀3的工作出料口切换至与第二进料管道7连接的出料口，同时关闭第二出料管道6上的电动阀门Ⅱ60，并开启电动阀门Ⅰ和第三出料管道9上的电动阀门Ⅲ90，经充填工业泵加压后，使充填料浆经充填料浆输送管道的泵送进料口进入充填料浆输送管道，泵压输送至井下充填区域。
根据本发明实施例的充填料浆输送系统及其控制方法，实现了一套系统两种输送模式，既能自流输送，又能泵压输送，满足井下不同充填区域的充填输送需求，且两种模式间切换灵活，节省了投资，节约了能耗，降低了充填成本。

Claims (7)

  1. 一种充填料浆输送系统，包括搅拌机和充填料浆输送管道，其特征在于，
    所述的充填料浆输送管道为三通输送管，由充填料浆输送管道的自流进料口、充填料浆输送管道的泵送进料口和充填料浆输送管道的排料管所组成，还包括第一出料管道、换向阀、第一进料管道、受料箱、第二出料管道、第二进料管道、充填工业泵及第三出料管道，
    所述搅拌机的出料口与换向阀的进料口通过第一出料管道连接，所述换向阀的一个出料口与受料箱的进料口通过第一进料管道连接，换向阀的另一个出料口与充填工业泵的进料口通过第二进料管道连接，所述受料箱的出料口与充填料浆输送管道的自流进料口通过第二出料管道连接，所述充填工业泵的出料口与充填料浆输送管道的泵送进料口通过第三出料管道连接，充填料浆输送管道的排料管布置于充填钻孔内，末端延伸至井下充填区域。
  2. 根据权利要求1所述的充填料浆输送系统，其特征在于，在所述的第一出料管道上设有电动阀门Ⅰ、流量计和浓度计。
  3. 根据权利要求1所述的充填料浆输送系统，其特征在于，所述的换向阀为电动换向阀。
  4. 根据权利要求1所述的充填料浆输送系统，其特征在于，所述的第二出料管道上设有电动阀门Ⅱ，所述的第三出料管道上设有电动阀门Ⅲ。
  5. 根据权利要求1所述的充填料浆输送系统，其特征在于，所述的三通输送管为Y字型管道或T字型管道，布置于充填钻孔内，末端延伸至井下充填区域，在所述充填料浆输送管道的排料管上，自充填钻孔底部至井下充填区域间每隔500m～600m设置一个远传压力监测装置。
  6. 根据权利要求1所述的充填料浆输送系统，其特征在于，还包括自动控制系统，所述的自动控制系统电性连接有换向阀、电动阀门Ⅰ、电动阀门Ⅱ和电动阀门Ⅲ。
  7. 一种充填料浆输送系统的控制方法，采用1-6任意一项所述的充填料浆输送系统，其特征在于,
    通过各压力监测点位的远传压力监测装置所测定的压力值及各压力监测点位间的距离，逐点计算出各压力监测点位间的管道输送阻力，再结合各压力监测点位与井下充填区域间的距离，进而判断出充填料浆自流输送至井下充填区域所需要的压力值；
    当其中任意一个压力监测点位的压力值大于该压力监测点位至井下充填区域间 充填料浆自流输送所需要的压力值时，将换向阀的工作出料口切换至与第一进料管道连接的出料口，采用自流输送方式，使搅拌好的充填料浆自流输送至受料箱内，然后开启第二出料管道上的电动阀门Ⅱ，使充填料浆经充填料浆输送管道的自流进料口进入充填料浆输送管道，自流输送至井下充填区域；
    当其中任意一个压力监测点位的压力值小于等于该压力监测点位至井下充填区域间充填料浆自流输送所需要的压力值时，则需要采用泵压输送方式，将换向阀的工作出料口切换至与第二进料管道连接的出料口，同时关闭第二出料管道上的电动阀门Ⅱ，并开启第三出料管道上的电动阀门Ⅲ，经充填工业泵加压后，使充填料浆经充填料浆输送管道的泵送进料口进入充填料浆输送管道，泵压输送至井下充填区域。
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