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Method for evaluating influences on underground water metal content by metal mine tailing cemented filling

A technology of cement filling and evaluation method, which is applied in the direction of testing water, material inspection products, etc.

Inactive Publication Date: 2015-07-22
JIANGXI UNIV OF SCI & TECH +1
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  • Application Information

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Problems solved by technology

At present, there is no mature evaluation method for the impact of metal mine tailings cemented filling on groundwater heavy metal content

Method used

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  • Method for evaluating influences on underground water metal content by metal mine tailing cemented filling
  • Method for evaluating influences on underground water metal content by metal mine tailing cemented filling
  • Method for evaluating influences on underground water metal content by metal mine tailing cemented filling

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Embodiment

[0031] Taking a metal mine in Guangxi as an example, the impact of tailings cemented filling on groundwater heavy metal content was evaluated.

[0032] 1) Properties of metal mine tailings

[0033] ① See Table 1 for the composition of tailing sand grains.

[0034] Table 1 Grain-level composition of tailings sand

[0035] Particle size / μm

-1

-5

-10

-20

-35

-50

Subtotal / (mass percentage%)

2.98

9.91

7.71

9.04

8.93

7.52

Cumulative / (mass percentage%)

2.98

12.89

20.60

29.64

38.57

46.09

Particle size / μm

-75

-100

-200

-250

-500

-1000

Subtotal / (mass percentage%)

10.59

8.10

16.99

4.55

10.90

2.78

Cumulative / (mass percentage%)

56.68

64.78

81.77

86.32

97.22

100

[0036]②Basic physical parameters such as tailings specific gravity, bulk density, porosity and natural angle of repose are shown in Tabl...

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Abstract

The invention relates to a method for evaluating influences on underground water metal content by metal mine tailing cemented filling. The method comprises the following steps: acquiring the properties of metal mine tailings, heavy metal content of different sources of underground water and data of annual average water flow speed; testing by adopting a dripping and soaking analysis method so as to obtain the parameters of influences on heavy metal content of underground water by different sources of underground water soaking filling body test blocks in 90-365 days; and evaluating the single pollution index SPI and the comprehensive pollution indexes of underground water according to the test result by the dripping and soaking analysis method, and dividing five underground quality levels according to the evaluation result. The comprehensive pollution index evaluation IPI and underground water quality level for influencing the underground heavy metal content by the different sources of underground water soak filling bodies are obtained by the test result by the dripping and soaking analysis method, so that the method for evaluating the influences on underground water metal content by metal mine tailing cemented filling is provided, and a certain technical guidance is provided for the practical filling production.

Description

technical field [0001] The invention relates to an evaluation method for underground water quality safety, in particular to an evaluation method for the influence of metal mine tailings cemented filling on the content of heavy metals in groundwater. Background technique [0002] Due to the increasingly complex mining conditions of underground deposits and the requirements for environmental protection, the proportion of filling and filling mining methods used in underground mines at home and abroad is increasing year by year. Cementing and filling metal mine tailings underground can not only improve the ore recovery rate, prevent the overburden of the mine from collapsing and surface subsidence to protect the surface of the mining area, but also greatly reduce the land occupation of tailings stacking and reduce the safety hazards of tailings ponds. In recent years, the research hotspots at home and abroad mainly focus on the proportion strength and filling technology of metal...

Claims

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Application Information

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IPC IPC(8): G01N33/18
Inventor 陈云嫩熊昌狮吴乐文张绍国罗先伟
Owner JIANGXI UNIV OF SCI & TECH
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