COAL GANGUE FILLING COAL MINE GOAF HEAVY METAL ION DETECTION AND SAMPLING SYSTEM

摘要

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 connected to the collection apparatuses (1) and the connection tubes at end portions of the communication channels to form transport 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.