WO2019037794A1 - 利用电泳原理控制采空区充填体重金属元素迁移的系统 - Google Patents

利用电泳原理控制采空区充填体重金属元素迁移的系统 Download PDF

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WO2019037794A1
WO2019037794A1 PCT/CN2018/102658 CN2018102658W WO2019037794A1 WO 2019037794 A1 WO2019037794 A1 WO 2019037794A1 CN 2018102658 W CN2018102658 W CN 2018102658W WO 2019037794 A1 WO2019037794 A1 WO 2019037794A1
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goaf
pump
conductive plates
heavy metal
water
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PCT/CN2018/102658
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English (en)
French (fr)
Inventor
黄艳利
翟文
高华东
董霁红
张吉雄
李俊孟
韩震
宋天奇
孔国强
王枫晚
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中国矿业大学
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Priority to AU2018321190A priority Critical patent/AU2018321190B2/en
Priority to RU2019106068A priority patent/RU2712982C1/ru
Priority to JP2019538354A priority patent/JP6676223B2/ja
Publication of WO2019037794A1 publication Critical patent/WO2019037794A1/zh

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    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/48—Treatment of water, waste water, or sewage with magnetic or electric fields
    • 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
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/10—Inorganic compounds
    • C02F2101/20—Heavy metals or heavy metal compounds
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/10—Nature of the water, waste water, sewage or sludge to be treated from quarries or from mining activities
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/42—Liquid level

Definitions

  • the invention relates to a migration and treatment system for filling metal elements in a goaf of a coal mine, in particular to a system for controlling the migration of metal elements in a goaf by using electrophoresis principle.
  • the object of the present invention is to make up for the treatment of environmental pollution caused by the filling of metal elements in the mined-out area of coal mines, and to invent a system for controlling the migration of metal elements in the gob of coal mine by electrophoresis principle, and to collect and discharge heavy metal ions in the goaf. Protect the groundwater environment in the mining area.
  • the invention discloses a system for controlling migration of metal elements in a goaf by using an electrophoresis principle, comprising a direct current power source, a plurality of rows of conductive plates, a plurality of screen tubes, a concentrated pipeline, a water pump, a water storage tank and a drainage pump.
  • the screens are arranged on the bottom plate of the goaf, and the parallel coal mining face is disposed at a set distance L from the open cut, uniformly covering the goaf, and the screen and the coal mining work
  • the surface is equal in length, the surface of the screen is evenly distributed throughout the seepage hole, and the outer layer is wrapped with several layers of geotextiles, and the screen is covered with gravel.
  • the concentrated pipeline is placed in the trough, each screen is connected to the centralized pipeline, and the pump is connected to the end of the centralized pipeline near the reservoir, and the water outlet of the pump is connected to the reservoir, and the gob A heavy metal ion concentration sensor is arranged on the conductive plate of the negative pole of the DC power supply and the water outlet of the pump, and the pump is used to control the start and stop of the pump.
  • the reservoir is provided with a water level sensor and a drain pump.
  • the parallel coal mining face is arranged with a row of the conductive plates connected in series in the goaf every L/2 distance, evenly covering the goaf, the conductive plate columns are equal to the coal mining face, and the conductive plates
  • the erecting plate is connected to the negative pole of the DC power supply, and the remaining conductive plates are connected to the positive pole of the DC power supply.
  • the conductive plate has a height of 1 m, a length of 2 m, and a width of 2 cm.
  • the invention adopts the electrophoresis principle to control the technical principle and work engineering of the system for filling the metal element migration in the goaf: the heavy metal element precipitated in the filling body of the coal mining area exists in the form of cations in the water of the goaf, and the DC power source is connected Under the action of the electric field force between the two rows of conductive plates of the positive and negative electrodes, the heavy metal cations in the water move toward the conductive plate of the negative electrode of the DC power supply, and the heavy metal ion concentration sensor is disposed on the conductive plate of the negative electrode of the DC power supply, below the conductive plate.
  • the cloth is provided with a screen.
  • the sensor on the conductive plate controls the pump to start working.
  • the sensor at the nozzle controls the pump to stop working.
  • the water level sensor is arranged in the water storage tank. When the water level in the water storage tank rises to a preset value, the water level sensor controls the drainage pump to start working. When the water level in the water storage tank drops to a preset value, the water level sensor controls the drainage pump. stop working.
  • the invention makes up for the treatment blank of the metal element in the coal mine goaf filling body weight, and the system construction method is simple and technically feasible, and can effectively collect and discharge the heavy metal ions precipitated from the filling body of the coal mine goaf, and control the coal mining.
  • the empty area is filled with the pollution of the ground metal environment by the weight metal elements; in addition, the system is powered by electricity and is economically reasonable.
  • FIG. 1 is a schematic view showing the arrangement of a system for controlling the migration of metal elements in a goaf by using the electrophoresis principle in a goaf.
  • FIG. 2 is a top plan view showing the arrangement of the conductive plates of the present invention in the goaf.
  • FIG. 3 is a schematic view showing the connection of the conductive plate of the present invention and the card slot.
  • the parallel coal mining face is gradually laid with the same length of the screen 3 in the floor of the goaf every 10 to 40 m.
  • the surface of the screen 3 is evenly distributed throughout the water seepage hole, and is wrapped with several layers of geotextiles, and the screen tube 3 is covered with sand gravel.
  • a parallel row of conductive plates 2 are arranged in the goaf every 5 to 20 m from the open coal cutting face, and the conductive plates are equal in length to the coal mining face.
  • Each conductive plate has a height of 1 m, a length of 2 m, and a width of 2 cm.
  • the conductive plates are held upright and connected to each other by a plurality of card slots 8 fixed to the bottom plate, and two adjacent card slots in the same column are spaced apart by 2 m. In addition to the first and last ones, only one conductive plate is fixed, and the other two fixed conductive plates are fixed.
  • the conductive plate above the screen 3 is connected to the negative pole of the DC power source 1, and the remaining conductive plates are connected to the positive pole of the DC power source 1.
  • a heavy metal ion concentration sensor is arranged on the conductive plate and the water outlet of the pump, and the pump is controlled to start and stop by the pump.
  • Anti-seepage treatment is carried out around and at the bottom of the reservoir 6.
  • a water level sensor is arranged in the reservoir, and the drain pump 7 is controlled to start and stop by means of a sensor.
  • the heavy metal cations in the water move toward the conductive plate of the negative pole of the DC power supply, and the concentration of heavy metal ions is provided on the conductive plate of the negative pole of the DC power supply.
  • the sensor is provided with a screen 3 under the conductive plate.
  • the concentration of heavy metal ions around the conductive plate of the negative pole of the DC power supply rises to a preset value
  • the sensor on the conductive plate controls the pump 5 to start working
  • the concentration of heavy metal ions at the water outlet of the pump falls to a preset value
  • the sensor at the water outlet controls the pump 5 to stop working.
  • the water level sensor is provided in the water storage tank 6. When the water level in the water storage tank rises to a preset value, the water level sensor controls the drainage pump 7 to start working. When the water level in the water storage tank drops to a preset value, the water level sensor is controlled.
  • the drain pump 7 stops working.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Mining & Mineral Resources (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Water Treatment By Electricity Or Magnetism (AREA)
  • Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)

Abstract

一种利用电泳原理控制采空区充填体重金属元素迁移的系统，包括直流电源（1）、导电板（2）、筛管（3）、集中管道（4）、抽水泵（5）、蓄水池(6)和排水泵（7）。采空区内平行采煤工作面每隔一定距离布置与采煤工作面等长的一列导电板（2），相邻的两列导电板（2）连接直流电源（1）的不同极，其中连接电源负极的导电板（2）下方铺设筛管（3）。重金属离子由于电场作用会在连接电源负极的导电板（2）周围富集，然后抽水泵（5）启动使污水经过筛管（3）、集中管道汇集于蓄水池（6），最后由排水泵（7）排到地面进行处理。该系统能够有效控制重金属离子在采空区围岩的迁移，减少采空区煤矸石充填体重金属离子对地下水环境的污染。

Description

利用电泳原理控制采空区充填体重金属元素迁移的系统 技术领域
本发明涉及一种煤矿采空区充填体重金属元素的迁移治理系统，尤其是一种利用电泳原理控制采空区充填体重金属元素迁移的系统。
背景技术
随着矸石充填采煤技术的应用与推广，煤矸石在充填入采空区之后，经过矿井水长期的淋溶与浸泡作用，其含有的重金属离子从煤矸石中析出，并且大量重金属离子在采空区围岩的运动迁移将会对地下水环境造成一定的影响。目前现有技术尚未发现有效的治理方法。
发明内容
本发明的目的在于，弥补煤矿采空区充填体重金属元素对环境污染的治理空白，发明了一种利用电泳原理控制煤矿采空区充填体重金属元素迁移的系统，聚集并排出采空区重金属离子，保护矿区地下水环境。
本发明一种利用电泳原理控制采空区充填体重金属元素迁移的系统，包括直流电源、若干列导电板、若干筛管、集中管道、抽水泵、蓄水池和排水泵。
所述各筛管布设于采空区的底板上，自开切眼开始平行采煤工作面每隔设定的距离L布设一根，均匀布满采空区，所述筛管与采煤工作面等长，筛管表面均匀遍布渗水孔，且外用若干层土工布包裹，筛管周围用砂砾石填充覆盖。
所述集中管道置于顺槽中，各筛管均连接在集中管道上，集中管道靠近蓄水池一端设有所述抽水泵，抽水泵的出水口接入所述蓄水池，采空区连直流电源负极的导电板上和抽水泵出水口处均设置重金属离子浓度传感器，依靠传感器控制抽水泵启动与停止。
所述蓄水池设有水位传感器和排水泵。
自开切眼开始平行采煤工作面每隔L/2距离在采空区布置一列相互串联的所述导电板，均匀布满采空区，导电板列与采煤工作面等长，导电板直立；处于筛管之上的导电板列连所述直流电源负极，其余导电板列连直流电源正极。
优选，所述导电板的高1m、长2m、宽2cm。
优选，所述污水管道间隔距离L＝10～40m。
本发明利用电泳原理控制采空区充填体重金属元素迁移的系统的技术原理和工作工程：煤矿采空区充填体析出的重金属元素以阳离子的形式存在于采空区积水中，在连直流电源正负极的两列导电板之间电场力的作用下，水中的重金属阳离子朝着连直流电源负极的导电板 方向移动，连直流电源负极的导电板上设有重金属离子浓度传感器，导电板下方布设有筛管。当连直流电源负极的导电板周围重金属离子的浓度上升到预设值时，导电板上的传感器即控制抽水泵开始工作，当抽水泵出水口处重金属离子的浓度下降到预设值时，出水口处的传感器即控制抽水泵停止工作。蓄水池中设有水位传感器，当蓄水池中水位上升到预设值时，水位传感器即控制排水泵开始工作，当蓄水池中水位下降到预设值时，水位传感器即控制排水泵停止工作。
本发明弥补了煤矿采空区充填体重金属元素对环境污染的治理空白，系统构建方法简单，技术上可行，能够对煤矿采空区充填体析出的重金属离子进行有效地聚集、排出，控制煤矿采空区充填体重金属元素对地下水环境的污染；此外系统以电力作为动力，经济上合理。
附图说明
图1是本发明利用电泳原理控制采空区充填体重金属元素迁移的系统在采空区的布设示意图。
图2是本发明导电板在采空区布设的俯视示意图。
图3是本发明导电板与卡槽的连接示意图。
图中：1-直流电源，2-导电板，3-筛管，4-集中管道，5-抽水泵，6-蓄水池，7-排水泵，8-卡槽。
具体实施方式
下面结合附图对本发明的实施作进一步的描述：
如图1所示，自开切眼开始，随着采煤工作面的推进，平行采煤工作面每隔10～40m在采空区底板逐步铺设与采煤工作面等长的筛管3。筛管3表面均匀遍布渗水孔，且用若干层土工布包裹，筛管3周围用砂砾石填充覆盖。
如图1、2所示，自开切眼开始平行采煤工作面每隔5～20m在采空区布置一列相互串联的导电板2，各导电板列与采煤工作面等长。各导电板高1m、长2m、宽2cm，如图3所示，这些导电板依靠固定在底板的若干卡槽8保持直立和实现电路联通，同一列相邻的两个卡槽间隔2m，每列卡槽除了第一个和最后一个只固定一片导电板外，其他均固定连续的两片导电板。筛管3之上的导电板列连直流电源1的负极，其余导电板列连直流电源1的正极。
所有的筛管3通向顺槽中的集中管道4，集中管道4通向事先建设好的蓄水池6，在集中管道靠近蓄水池一端安装抽水泵5，采空区连直流电源负极的导电板上和抽水泵出水口处设置重金属离子浓度传感器，依靠传感器控制抽水泵5启动与停止。
蓄水池6四周及底部进行防渗处理，蓄水池中设置有水位传感器，依靠传感器控制排水泵7启动与停止。
在连直流电源1正负极的两列导电板之间电场力的作用下，水中的重金属阳离子朝着连直流电源负极的导电板方向移动，连直流电源负极的导电板上设有重金属离子浓度传感器，导电板下方布设有筛管3。当连直流电源负极的导电板周围重金属离子的浓度上升到预设值时，导电板上的传感器即控制抽水泵5开始工作，当抽水泵出水口处重金属离子的浓度下降到预设值时，出水口处的传感器即控制抽水泵5停止工作。蓄水池6中设有水位传感器，当蓄水池中水位上升到预设值时，水位传感器即控制排水泵7开始工作，当蓄水池中水位下降到预设值时，水位传感器即控制排水泵7停止工作。

Claims (3)

  1. 一种利用电泳原理控制采空区充填体重金属元素迁移的系统，直流电源、若干列导电板、若干筛管、集中管道、抽水泵、蓄水池和排水泵；其特征是：
    所述各筛管布设于采空区的底板上，自开切眼开始平行采煤工作面每隔设定的距离L布设一根，均匀布满采空区，所述筛管与采煤工作面等长，筛管表面均匀遍布渗水孔，且外用若干层土工布包裹，筛管周围用砂砾石填充覆盖；
    所述集中管道置于顺槽中，各筛管均连接在集中管道上，集中管道靠近蓄水池一端设有所述抽水泵，抽水泵的出水口接入所述蓄水池，采空区连直流电源负极的导电板上和抽水泵出水口处均设置重金属离子浓度传感器，依靠传感器控制抽水泵启动与停止；
    所述蓄水池设有水位传感器和排水泵；
    自开切眼开始平行采煤工作面每隔L/2距离在采空区布置一列相互串联的所述导电板，均匀布满采空区，导电板列与采煤工作面等长，导电板直立；处于筛管之上的导电板列连所述直流电源负极，其余导电板列连直流电源正极。
  2. 根据权利要求权所述利用电泳原理控制采空区充填体重金属元素迁移的系统，其特征是：所述导电板的高1m、长2m、宽2cm。
  3. 根据权利要求权所述利用电泳原理控制采空区充填体重金属元素迁移的系统，其特征是：所述筛管间隔距离L＝10～40m。
PCT/CN2018/102658 2018-02-05 2018-08-28 利用电泳原理控制采空区充填体重金属元素迁移的系统 WO2019037794A1 (zh)

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AU2018321190A AU2018321190B2 (en) 2018-02-05 2018-08-28 System for controlling migration of heavy metal elements of filling body in goaf based on electrophoresis principle
RU2019106068A RU2712982C1 (ru) 2018-02-05 2018-08-28 Система для регулирования миграции элементов тяжелых металлов в материале для закладки выработанного пространства на основе принципов электрофореза
JP2019538354A JP6676223B2 (ja) 2018-02-05 2018-08-28 電気泳動原理による採掘跡における充填体の重金属元素の移動の制御システム

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CN201810114022.9A CN108128856B (zh) 2018-02-05 2018-02-05 利用电泳原理控制采空区充填体重金属元素迁移的系统
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CN108128856B (zh) * 2018-02-05 2019-06-04 中国矿业大学 利用电泳原理控制采空区充填体重金属元素迁移的系统
CN108986208B (zh) * 2018-07-11 2023-04-07 辽宁工程技术大学 一种煤矿采空区冒落形态的重构方法
CN114477384B (zh) * 2022-01-27 2024-02-09 西北工业大学 双金属微电极抑菌材料及其制备方法、双金属微电极-碳基材料复合抑菌材料和水处理装置
CN114658407B (zh) * 2022-04-13 2023-01-06 南华大学 一种电动原地浸出采铀装置及方法

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