Patent AU-2018321191-B2 (AU)
Title: System for detecting and sampling heavy metal ions in goaf of coal mine filled with gangue
Inventor: HUANG YANLI
IPC: G01N1/14
Filed: 2018-08-28
Granted: 2020-08-27
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(71) $i : * r ( * N(CHINA UNIVERSITY f )+HHtl N E 1I, Jiangsu 221116 (CN)o 
OF MINING AND TECHNOLOGY) [CN/CN]; ITi AB* (WANG, Fengwan); +Fl43 ilflT'I[T$4H 
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(54) Title: COAL GANGUE FILLING COAL MINE GOAF HEAVY METAL ION DETECTION AND SAMPLING SYSTEM 
AA 
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AA COAL CC MINING PATHWAY 
BB GOAF DD COAL MINING FACE ADVANCEMENT DIRECTION 
(57) Abstract: A coal gangue filling coal mine goaf heavy metal ion detection and sampling system, composed of several collection 
apparatuses (1), and sampling tubes (3) equal in number to the collection apparatuses. The collection apparatuses (1) are arranged in 
rows at set intervals, and equally divided into several longitudinal channels (7) by water separation plates (4), wherein one longitudinal 
channel (7) is provided with a water-permeable opening (6). The collection apparatuses (1) in each row are sequentially connected by 
connection tubes (2), various communication channels are formed within tube bodies, and the water-permeable openings (6) of the 
collection apparatuses (1) are respectively located on different communication channels. The various sampling tubes (3) are respectively 
t- connected to the collection apparatuses (1) and the connection tubes at end portions of the communication channels to form transport 
t pipelines, and the sampling tubes (3) are arranged within a mining area connecting pathway and connected to a water pump outside 
a goaf. The system respectively extracts accumulated mine water from designated positions in the goaf for storage, determines heavy 
metal ion concentrations in goaf coal gangue filling body soaking solutions, gives a true reflection of distribution states of heavy metal 
ions within the goaf, and provides a sampling means for further analysing goaf heavy metal contamination.
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