CN204405490U - A kind of pour to strain to test device testing heavy metal element release and transport - Google Patents
A kind of pour to strain to test device testing heavy metal element release and transport Download PDFInfo
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Abstract
本实用新型属于环境岩土工程和地表岩体环境水化学领域，尤其涉及一种测试重金属元素释放迁移的淋滤时延装置。本实用新型的目的在于提供一种测试重金属元素释放迁移的淋滤试验装置，包括：支架，淋滤柱，带有刻度的第一淋滤收集瓶，第二淋滤收集瓶，真空泵，保险瓶，吸力渗漏仪，第一导液管，针孔式喷头，第二导液管，储水箱，液泵，流量计，压力表，缩口，侧向取样口，张力计，水分传感器，电缆，数据采集系统仪和电脑等，所述试验装置可以对各个分层岩土体的物理状况和重金属向地下水释放迁移进行监测，对各分层岩土体和淋滤液进行实时采样检测，所述试验装置可以模拟重金属元素在岩土体各个层位的淋滤、迁移和转化过程。
The utility model belongs to the field of environmental geotechnical engineering and surface rock mass environmental water chemistry, in particular to a leaching time delay device for testing the release and migration of heavy metal elements. The purpose of the utility model is to provide a leaching test device for testing the release and migration of heavy metal elements, including: a bracket, a leaching column, a first leaching collection bottle with scales, a second leaching collection bottle, a vacuum pump, and a safety bottle , suction leak meter, first catheter, pinhole nozzle, second catheter, water storage tank, liquid pump, flow meter, pressure gauge, shrinkage, side sampling port, tensiometer, moisture sensor, cable , data acquisition system instrument and computer, etc., the test device can monitor the physical condition of each layered rock-soil mass and the release and migration of heavy metals to groundwater, and perform real-time sampling and detection of each layered rock-soil mass and leachate. The test device can simulate the leaching, migration and transformation process of heavy metal elements in various layers of rock and soil.
Description
技术领域 technical field
本实用新型属于环境岩土工程和地表岩体环境水化学领域，尤其涉及一种测试重金属元素释放迁移的淋滤时延装置。 The utility model belongs to the field of environmental geotechnical engineering and surface rock mass environmental water chemistry, in particular to a leaching time delay device for testing the release and migration of heavy metal elements.
背景技术 Background technique
地表岩土体是人类赖以生存和发展的物质基础和环境条件。随着工业化发展，煤炭、金属矿山尾矿等富含重金属元素的岩土体易被降水长期淋滤形成酸性水，从而产生水岩化学作用使重金属元素发生迁移、沉淀、转化等地球化学作用，并逐步扩散至水环境中而导致附近岩土-水环境污染，威胁人类健康和地球资源生命。 Surface rock and soil are the material basis and environmental conditions for human survival and development. With the development of industrialization, rocks and soils rich in heavy metal elements such as coal and metal mine tailings are easily leached by precipitation for a long time to form acidic water, resulting in water-rock chemistry that causes heavy metal elements to migrate, precipitate, transform and other geochemical effects. And gradually spread into the water environment, causing pollution of the nearby rock and soil-water environment, threatening human health and earth resource life.
目前，对于岩土体污染物迁移和转化的研究主要针对土壤的田间微区试验和实验室土柱淋滤试验。田间微区试验主要研究外源污染物，该方法工程量大，难以精确控制试验条件，试验结果重复性差，且费用昂贵，难以进行大规模推广。在试验室中开展岩土体的淋滤试验，可精确控制试验条件，降低工作量，其试验结果重复性也相对较好。传统的室内土柱淋滤试验经过多年的技术发展已较为成熟，但大多数只针对整体土柱污染进行模拟，而对土柱各分层岩土体的污染物迁移和向水环境转化等规律等研究有待改进。其次，传统土柱淋滤试验装置，缺乏对各个分层岩土体状况的监测，导致对各分层岩土体的毛细水压力、含水量等物理状态不明。 At present, the research on the migration and transformation of pollutants in rock and soil mainly focuses on field microplot experiments and laboratory soil column leaching experiments. The field micro-plot test mainly studies exogenous pollutants. This method requires a large amount of engineering, it is difficult to accurately control the test conditions, the test results are poor in repeatability, and the cost is expensive, so it is difficult to promote on a large scale. Carrying out the leaching test of rock and soil in the laboratory can precisely control the test conditions, reduce the workload, and the repeatability of the test results is relatively good. The traditional indoor soil column leaching test has been relatively mature after years of technical development, but most of them only simulate the pollution of the overall soil column, and the laws of pollutant migration and transformation to the water environment in each layered rock and soil mass of the soil column Other studies need to be improved. Secondly, the traditional soil column leaching test device lacks the monitoring of the status of each layered rock and soil mass, resulting in unknown physical states such as capillary water pressure and water content of each layered rock and soil mass.
设计出一种适合监测各分层岩土体物理化学状态的淋滤试验装置是当务之急。 It is urgent to design a leaching test device suitable for monitoring the physical and chemical state of each layered rock and soil mass.
发明内容 Contents of the invention
本实用新型的目的在于提供一种测试重金属元素释放迁移的淋滤试验装置，所述试验装置可以对各个分层岩土体的物理状况和重金属向地下水释放迁移进行监测，对各分层岩土体和淋滤液进行实时采样检测，所述试验装置可以模拟重金属元素在岩土体各个层位的淋滤、迁移和转化过程。 The purpose of the utility model is to provide a leaching test device for testing the release and migration of heavy metal elements. The test device can monitor the physical conditions of each layered rock and soil body and the release and migration of heavy metals to groundwater, and the The test device can simulate the leaching, migration and transformation process of heavy metal elements in various layers of rock and soil for real-time sampling and detection.
一种测试重金属元素释放迁移的淋滤试验装置，包括：支架(13)，淋滤柱(7),带有刻度的第一淋滤收集瓶，第二淋滤收集瓶，真空泵，保险瓶，所述淋滤柱置于支架上，所述淋滤柱下端放置带有刻度的第二淋滤收集瓶，所述淋滤柱侧面上设置有吸力渗漏仪，所述吸收渗漏仪通过第一导液管与第一淋滤收集瓶相连，所述带有刻度的第一淋滤收集瓶与真空泵之间设置保险瓶，带有刻度的第一淋滤收集瓶、真空 泵和保险瓶通过第一导液管相连， A leaching test device for testing the release and migration of heavy metal elements, comprising: a support (13), a leaching column (7), a first leaching collection bottle with scales, a second leaching collection bottle, a vacuum pump, a safe bottle, The leaching column is placed on a support, the second leaching collection bottle with scale is placed at the lower end of the leaching column, and a suction leakage instrument is arranged on the side of the leaching column, and the absorption leakage instrument passes through the first A catheter is connected with the first leaching collection bottle, and a safety bottle is set between the first leaching collection bottle with scale and the vacuum pump, and the first leaching collection bottle with scale, the vacuum pump and the safety bottle pass through connected to the first catheter,
其特征在于：还包括通过支架垂直悬置于淋滤柱上的针孔式喷头，第二导液管，淋滤柱下部连接的漏斗状的缩口和淋滤柱侧面设置的侧向取样口、张力计、导线孔，水分传感器，电缆，数据采集系统仪，电脑，所述针孔式喷头进水口通过第二导液管依次与压力表、流量计和液泵输出端相连，所述第二导液管一端与液泵的输入端相连，所述第二导液管另一端伸入储水箱，所述缩口与淋滤柱之间设置第二过滤层，所述缩口与淋滤柱连接处设置有法兰盘，所述缩口、淋滤柱和法兰盘用螺母和硅胶密闭垫圈进行密闭，所述水分传感器的探针通过设置于淋滤柱侧面的导线孔埋设于淋滤柱内，所述张力计的探针通过设置于淋滤柱侧面的导线孔埋设于淋滤柱内，所述张力计和水分传感器采集得到的信号通过电缆传递至所述数据采集系统仪，所述数据采集系统仪与电脑相连，所述淋滤柱和缩口采用有机玻璃制成。 It is characterized in that: it also includes a pinhole spray head vertically suspended on the leaching column through a bracket, a second catheter, a funnel-shaped constriction connected to the lower part of the leaching column, and a lateral sampling port provided on the side of the leaching column , tensiometer, wire hole, moisture sensor, cable, data acquisition system instrument, computer, the water inlet of the pinhole nozzle is connected with the pressure gauge, the flow meter and the output end of the liquid pump in turn through the second catheter, and the first One end of the two catheters is connected to the input end of the liquid pump, the other end of the second catheter extends into the water storage tank, a second filter layer is arranged between the neck and the leaching column, and the neck and the leaching A flange is provided at the joint of the column, and the shrinkage, the leaching column and the flange are sealed with nuts and silica gel sealing gaskets. In the filter column, the probe of the tensiometer is buried in the leaching column through the wire hole arranged on the side of the leaching column, and the signal collected by the tensiometer and the moisture sensor is transmitted to the data acquisition system instrument through the cable, The data acquisition system is connected to a computer, and the leaching column and the neck are made of plexiglass.
进一步地，所述带有刻度的第二淋滤收集瓶置于电子天平上，所述带有刻度的第二淋滤收集瓶位于缩口出水口下方。 Further, the second leaching collection bottle with scale is placed on an electronic balance, and the second leaching collection bottle with scale is located below the water outlet of the shrinkage.
进一步地，所述淋滤柱顶放置第一过滤层，所述第一过滤层由尼龙筛网和第一多孔板自上而下构成，所述第一过滤层位于针孔式喷头正下方。 Further, a first filter layer is placed on the top of the leaching column, and the first filter layer is composed of a nylon mesh and a first porous plate from top to bottom, and the first filter layer is located directly below the pinhole nozzle .
进一步地，所述第二导液管伸入储水箱的一端接有过滤网，所述第二导液管伸入储水箱的一端静置于水箱内水面下。 Further, one end of the second liquid guide pipe extending into the water storage tank is connected with a filter screen, and one end of the second liquid guide pipe extending into the water storage tank is statically placed under the water surface in the water tank.
进一步地，所述吸力渗漏仪、侧向取样口、张力计和水分传感器的间距为20CM。 Further, the distance between the suction leak meter, the side sampling port, the tensiometer and the moisture sensor is 20 cm.
进一步地，所述过第二过滤层由尼龙筛网，石英砂,尼龙筛网和第二多孔板由上而下依次构成。 Further, the second filter layer is composed of nylon mesh, quartz sand, nylon mesh and second porous plate sequentially from top to bottom.
进一步地，所述淋滤柱高度≥105CM，所述淋滤柱柱体内径≥12.5CM。 Further, the height of the leaching column is ≥105CM, and the inner diameter of the leaching column is ≥12.5CM.
进一步地，所述第二多孔板孔径为R，0.2CM≤R≤0.5CM。 Further, the pore diameter of the second porous plate is R, 0.2CM≤R≤0.5CM.
本实用新型的有益效果是： The beneficial effects of the utility model are:
本实用新型在淋滤柱正上方的针孔式喷头和淋滤柱顶端设置的过滤层，可使水分喷洒和分散更均匀，且有效的保护淋滤柱顶端土体不被冲蚀；淋滤柱下部设置过滤层，主要是保证淋滤柱底部不积水，承载淋滤柱内部岩土体重量，且具有减少淋滤液中含有杂质的作用。 In the utility model, the pinhole nozzle directly above the leaching column and the filter layer arranged at the top of the leaching column can make the water spray and disperse more evenly, and effectively protect the soil at the top of the leaching column from being eroded; The filter layer at the bottom of the column is mainly to ensure that no water accumulates at the bottom of the leaching column, to bear the weight of the rock and soil inside the leaching column, and to reduce impurities in the leachate.
本实用新型喷头进水口处设置流量计和压力表，有效的控制了水分进入淋滤柱的流量 和有效雨强，可模拟不同流量和雨强条件下的淋滤试验。 The water inlet of the nozzle of the utility model is equipped with a flow meter and a pressure gauge, which effectively controls the flow of water entering the leaching column and the effective rain intensity, and can simulate leaching tests under different flow and rain intensity conditions.
本实用新型淋滤柱侧面设置侧向取样口、吸力渗漏计，可有效实现对各层岩土体和淋滤液实时进行取样检测；张力计、水分传感器可实时监测各分层岩土体的物理状况，因此，可研究重金属元素在各层位岩土体的迁移、转化规律。 The side of the leaching column of the utility model is provided with a lateral sampling port and a suction seepage meter, which can effectively realize real-time sampling and detection of rock and soil bodies and leaching fluids of each layer; tensiometers and moisture sensors can monitor the moisture content of each layer of rock and soil bodies in real time. Therefore, it is possible to study the migration and transformation laws of heavy metal elements in rock and soil at various layers.
附图说明 Description of drawings
图1为本实用新型所述装置的结构示意图 Fig. 1 is the structural representation of device described in the utility model
图2为本实用新型所述装置的A-A剖面图 Fig. 2 is the A-A sectional view of device described in the utility model
图3为本实用新型所述装置的淋滤柱与缩口相接局部放大的结构示意图 Fig. 3 is a partially enlarged structural schematic diagram of the connection between the leaching column and the constriction of the device described in the present invention
图中标号为：1-储水箱，2-液泵，3-流量计，4-压力表，5-第一导液管，6-针孔式喷头，7-淋滤柱，8-缩口，9-吸力渗漏仪，10-侧向取样口，11-第一淋滤收集瓶，12-真空泵，13-支架，14-电子天平，15-电缆，16-张力计，17-水分传感器，18-数据采集系统仪，19-电脑，20-尼龙筛网，21-第一多孔板，22-石英砂，23-硅胶密闭垫圈，24-法兰盘,25-第二导液管,26-保险瓶,27-第二淋滤收集瓶,28-第二多孔板。 The labels in the figure are: 1-water storage tank, 2-liquid pump, 3-flow meter, 4-pressure gauge, 5-first catheter, 6-pinhole nozzle, 7-leaching column, 8-restriction , 9-suction leak meter, 10-side sampling port, 11-first leaching collection bottle, 12-vacuum pump, 13-support, 14-electronic balance, 15-cable, 16-tensiometer, 17-moisture sensor , 18-data acquisition system instrument, 19-computer, 20-nylon screen, 21-the first porous plate, 22-quartz sand, 23-silicone sealing gasket, 24-flange, 25-the second catheter , 26-safety bottle, 27-the second leaching collection bottle, 28-the second porous plate.
具体实施方式 Detailed ways
下面结合实施例和附图，详细说明本实用新型的技术方案。 The technical solution of the utility model will be described in detail below in conjunction with the embodiments and accompanying drawings.
如图1和图2所示, As shown in Figure 1 and Figure 2,
一种测试重金属元素释放迁移的淋滤试验装置，包括：支架13，淋滤柱7,带有刻度的第一淋滤收集瓶11,第二淋滤收集瓶27,真空泵12,保险瓶26所述淋滤柱7置于支架13上，所述淋滤柱7下端放置带有刻度的第二淋滤收集瓶27，所述淋滤柱7侧面上设置有吸力渗漏仪9，所述淋滤柱7高度≥105CM，所述淋滤柱7柱体内径≥12.5CM，所述吸收渗漏仪9通过第一导液管5与第一淋滤收集瓶11相连，所述带有刻度的第一淋滤收集瓶11与真空泵12之间设置保险瓶26，带有刻度的第一淋滤收集瓶11、真空泵12和保险瓶26通过第一导液管5相连，还包括通过支架13垂直悬置于淋滤柱7上的针孔式喷头6，第二导液管25，淋滤柱7下部连接的漏斗状的缩口8和淋滤柱7侧面设置的侧向取样口10、张力计16、导线孔，水分传感器17，电缆15，数据采集系统仪18，电脑19，所述淋滤柱7顶放置第一过滤层，所述第一过滤层由40目尼龙筛网20和多孔板21自上而下构成，所述第一过滤层位于针孔式喷头6正下方,所述针孔式喷头6进水口通过第一导液管5依次与压力表4、流量计3和液泵2输出端相连，所述吸力渗漏仪9、侧向取样口10、张力计16 和水分传感器的间距为20CM,所述第二导液管25一端与液泵2的输入端相连，所述第二导液管25另一端伸入储水箱1，所述第二导液管25伸入储水箱1的一端接有过滤网，所述第二导液管25伸入储水箱1的一端静置于水箱内水面下,所述缩口8与淋滤柱7之间设置第二过滤层，所述过第二滤层由40目尼龙筛网20，石英砂22,40目尼龙筛网20和第二多孔板28由上而下依次构成,所述第二多孔板28孔径为R，0.2CM≤R≤0.5CM,所述缩口8与淋滤柱7连接处设置有法兰盘24，所述缩口8、淋滤柱7和法兰盘24用螺母和硅胶密闭垫圈23进行密闭，所述水分传感器17的探针通过设置于淋滤柱7侧面的导线孔埋设于淋滤柱7内，所述张力计16的探针通过设置于淋滤柱7侧面的导线孔埋设于淋滤柱7内，所述张力计16和水分传感器17采集得到的信号通过电缆15传递至所述数据采集系统仪18，所述数据采集系统仪18与电脑19相连，所述淋滤柱7和缩口8采用有机玻璃制成,所述带有刻度的第一淋滤收集瓶11和带有刻度的第二淋滤收集瓶27使用广口瓶式的瓶塞密闭,所述带有刻度的第二淋滤收集瓶27置于电子天平14上，所述带有刻度的第二淋滤收集瓶27位于缩口8出水口下方,所述张力计16和水分传感器17的探针通过的导线孔采用耐酸或者耐碱性玻璃胶密闭,所述侧向取样口10采用螺纹式密闭封口，所述吸收渗漏仪9采用螺纹式密闭封口。 A leaching test device for testing the release and migration of heavy metal elements, comprising: a bracket 13, a leaching column 7, a first leaching collection bottle 11 with scales, a second leaching collection bottle 27, a vacuum pump 12, and a safety bottle 26 The leaching column 7 is placed on the support 13, the second leaching collection bottle 27 with scale is placed at the lower end of the leaching column 7, and a suction leakage instrument 9 is arranged on the side of the leaching column 7. The height of the filter column 7 is ≥ 105CM, the internal diameter of the leaching column 7 is ≥ 12.5CM, the absorption leakage instrument 9 is connected to the first leaching collection bottle 11 through the first catheter 5, and the graduated A safety bottle 26 is arranged between the first leaching collection bottle 11 and the vacuum pump 12, and the first leaching collection bottle 11 with scale, the vacuum pump 12 and the safety bottle 26 are connected by the first catheter 5, and also include a support 13 vertical The pinhole nozzle 6 suspended on the leaching column 7, the second catheter 25, the funnel-shaped constriction 8 connected to the lower part of the leaching column 7 and the lateral sampling port 10 provided on the side of the leaching column 7, the tension Meter 16, wire holes, moisture sensor 17, cable 15, data acquisition system instrument 18, computer 19, the first filter layer is placed on the top of the leaching column 7, and the first filter layer is made of 40 mesh nylon screen 20 and porous The plate 21 is formed from top to bottom, the first filter layer is located directly below the pinhole nozzle 6, and the water inlet of the pinhole nozzle 6 communicates with the pressure gauge 4, the flowmeter 3 and the liquid through the first catheter 5 in sequence. The output end of the pump 2 is connected, and the distance between the suction leak meter 9, the side sampling port 10, the tensiometer 16 and the moisture sensor is 20 cm, and one end of the second catheter tube 25 is connected to the input end of the liquid pump 2. The other end of the second guide tube 25 extends into the water storage tank 1, and one end of the second guide tube 25 extending into the water storage tank 1 is connected with a filter screen, and the second guide tube 25 extends into one end of the water storage tank 1 Stand still under the water surface in the water tank, a second filter layer is set between the shrinkage 8 and the leaching column 7, and the second filter layer is made of 40 mesh nylon screen 20, quartz sand 22, and 40 mesh nylon screen 20 and the second porous plate 28 are sequentially formed from top to bottom, the pore diameter of the second porous plate 28 is R, 0.2CM≤R≤0.5CM, the connection between the shrinkage 8 and the leaching column 7 is provided with a Blue plate 24, described shrinkage 8, leaching column 7 and flange plate 24 are sealed with nut and silica gel airtight washer 23, and the probe of described moisture sensor 17 is buried in the wire hole that is arranged on leaching column 7 sides In the leaching column 7, the probe of the tensiometer 16 is buried in the leaching column 7 through the wire hole arranged on the side of the leaching column 7, and the signals collected by the tensiometer 16 and the moisture sensor 17 are transmitted through the cable 15 To the data acquisition system instrument 18, the data acquisition system instrument 18 is connected to the computer 19, the leaching column 7 and the necking 8 are made of plexiglass, and the first leaching collection bottle 11 with scale And the second leaching collection bottle 27 with scale uses the bottle stopper airtight of jar type, and the second leaching collection bottle 27 with scale is placed on the electronic balance 14, and the second leaching collection bottle 27 with scale The leaching collection bottle 27 is located under the water outlet of the necking mouth 8 The wire holes through which the probes of the tensiometer 16 and the moisture sensor 17 pass are sealed with acid-resistant or alkali-resistant glass glue. Airtight seal.
作为优选，第一导液管5和第二导液管25选用硅胶管。 Preferably, the first catheter 5 and the second catheter 25 are made of silicone tubes.
作为优选，液泵2选用蠕动泵。 Preferably, the liquid pump 2 is a peristaltic pump.
作为优选，所述侧向取样口10采用螺纹式密闭封口，所述吸收渗漏仪9采用螺纹式密闭封口。 Preferably, the side sampling port 10 adopts a threaded airtight seal, and the absorption leak meter 9 adopts a threaded airtight seal.
作为优选，所述带有刻度的第一淋滤收集瓶11和带有刻度的第二淋滤收集瓶27使用广口瓶式的瓶塞密闭。 Preferably, the graduated first leaching collection bottle 11 and the graduated second leaching collection bottle 27 are sealed with jar-type stoppers.
作为优选，所述张力计16和水分传感器17的探针通过的导线孔采用耐酸或者耐碱性玻璃胶密闭。 Preferably, the lead holes through which the probes of the tensiometer 16 and the moisture sensor 17 pass are sealed with acid-resistant or alkali-resistant glass glue.
本实用新型通过以下步骤进行组装： The utility model is assembled through the following steps:
如图3所示，缩口8顶端铺设第二多孔板28和硅胶密闭垫圈23后，将缩口8和淋滤柱7的法兰盘24相对应，采用螺母连接，如图1所示，将连接完成后的淋滤柱7和缩口8安装于由不锈钢水管制成的支架13上。 As shown in Figure 3, after the second porous plate 28 and the silica gel sealing gasket 23 are laid on the top of the necking 8, the necking 8 is corresponding to the flange 24 of the leaching column 7, and connected by nuts, as shown in Figure 1 , install the leaching column 7 and the necking 8 after the connection is completed on the bracket 13 made of stainless steel water pipes.
淋滤柱7底部由上而下依次铺设40目尼龙筛网20，石英砂22,40目尼龙筛网 20和第二多孔板28。根据野外调查岩土体剖面，将大块的岩体进行粉碎至20目以下，按顺序将不同剖面的岩土体根据所画标记线装入淋滤柱7中，按照淋滤柱7各侧面所设计的取样口和导线孔的间距20cm，当每装填20cm高度的样品时，在岩土层对应的淋滤柱侧面孔处埋设吸力渗漏计9、张力计16、水分传感器17，当岩土体装至淋滤柱7顶端时依次安装第一多孔板21和40目尼龙筛网20。 The bottom of the leaching column 7 is successively laid with 40 mesh nylon screen 20, quartz sand 22, 40 mesh nylon screen 20 and the second porous plate 28 from top to bottom. According to the field survey of the rock and soil profile, the large rock mass is crushed to below 20 meshes, and the rock and soil bodies of different sections are packed into the leaching column 7 according to the drawn marking line in order, and the leaching column 7 is separated according to the sides of the leaching column 7. The distance between the designed sampling port and the wire hole is 20cm. When every sample with a height of 20cm is filled, a suction seepage meter 9, a tensiometer 16, and a moisture sensor 17 are buried at the side hole of the leaching column corresponding to the rock and soil layer. When the soil body is loaded to the top of the leaching column 7, the first porous plate 21 and the 40-mesh nylon screen 20 are installed in sequence.
如图1所示，运用螺纹铆接将支架13加高至针孔式喷头6顶端处，将针孔式喷头6捆扎于支架13上，运用第一导液管5与储水箱1、液泵2、流量计3和压力表4依次连接，同时在第一导液管5伸入储水箱1的一端设置过滤网。 As shown in Figure 1, the bracket 13 is raised to the top of the pinhole nozzle 6 by screw riveting, the pinhole nozzle 6 is tied to the bracket 13, and the first catheter 5 is connected to the water storage tank 1 and the liquid pump 2. , the flowmeter 3 and the pressure gauge 4 are connected in turn, and at the same time, a filter screen is set at one end where the first catheter 5 extends into the water storage tank 1 .
参照图1和图2所示，第二淋滤液收集瓶27置于缩口8的出水口处，第一淋滤液收集瓶11使用第一导液管5与吸力渗漏计9、真空泵12相连；张力计16和水分传感器17采用电缆15与数据采集系统仪18、电脑19相连接。 Referring to Figures 1 and 2, the second leachate collection bottle 27 is placed at the water outlet of the constriction 8, and the first leachate collection bottle 11 is connected to the suction leakmeter 9 and the vacuum pump 12 using the first catheter 5 Tension meter 16 and moisture sensor 17 are connected with data acquisition system instrument 18 and computer 19 by cable 15 .
试验时，将去离子水盛入储水箱1中，开启液泵2，设置不同水流量、压力组合条件，利用针孔式喷头6喷洒于淋滤柱7顶端的40目尼龙筛网20上，并透过多孔板21逐步分流至各层岩土层样品中。分别在设计的不同时段对各层岩土体样品进行取样、利用电脑控制数据采集系统采集各层岩土体的物理状况数据和利用真空泵采集各层土壤淋滤液，对采集了淋滤液的淋滤液收集瓶置于电子天平上进行称量，计算淋滤液密度。对于不同时段采集的各层岩土体样品，室温风干过后过200目粉碎进行重金属元素测试，同时对不同时段采集的淋滤液进行检测，通过数据分析与各个时段岩土体样品和水环境中重金属含量进行对比分析，查明重金属元素在岩土体中的淋滤、迁移和转化规律。 During the test, deionized water is filled into the water storage tank 1, the liquid pump 2 is turned on, and different water flow and pressure combination conditions are set, and the pinhole nozzle 6 is used to spray on the 40-mesh nylon screen 20 at the top of the leaching column 7. And through the perforated plate 21, the flow is gradually shunted to the rock and soil layer samples of each layer. Sampling the rock and soil samples of each layer at different periods of the design, using the computer-controlled data acquisition system to collect the physical condition data of each layer of rock and soil, and using the vacuum pump to collect the soil leachate of each layer, and the leachate that collected the leachate The collection bottle was placed on an electronic balance for weighing, and the density of the leachate was calculated. For the rock and soil samples collected in different periods, they were air-dried at room temperature and crushed through 200 mesh for heavy metal element testing. Comparative analysis of heavy metal content in rock and soil to find out the law of leaching, migration and transformation of heavy metal elements in rock and soil.
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| CN111157697A (en) * | 2018-11-07 | 2020-05-15 | 中国科学院地理科学与资源研究所 | A kind of high-salinity soil leaching experimental method device and leaching experimental method |
| CN109709002A (en) * | 2019-02-28 | 2019-05-03 | 湖北理工学院 | A device and method based on simulating the vertical release of unsaturated infiltration pollutants |
| CN109709002B (en) * | 2019-02-28 | 2024-03-19 | 湖北理工学院 | Device and method based on simulation of vertical release of unsaturated infiltration pollutants |
| CN110274852B (en) * | 2019-07-15 | 2021-08-17 | 长安大学 | A groundwater dynamic simulation experimental system and experimental method |
| CN110274852A (en) * | 2019-07-15 | 2019-09-24 | 长安大学 | A kind of groundwater dynamic experimental system for simulating and experimental method |
| CN111574004A (en) * | 2020-05-19 | 2020-08-25 | 哈工大机电工程(嘉善)研究院 | A comprehensive experimental device for oily sludge reduction |
| CN112858637B (en) * | 2021-02-05 | 2024-01-02 | 中国地质调查局西安地质调查中心(西北地质科技创新中心) | Outdoor in-situ undercurrent belt pollution element migration test device |
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