Field sampling device and sampling method of filling slurry

Abstract

The invention provides a field sampling device and a use method of filling slurry. The sampling device comprises a slurry cylinder control unit and a slurry cylinder, wherein the slurry cylinder control unit comprises a sampling rod, an upper transverse rod 5, and a lower transverse rod 12, and a control rod 15 is axially inserted into a main rod 3; the slurry cylinder comprises a slurry cylinder upper baffle 8, a slurry cylinder pipe 9 and a slurry cylinder lower baffle 11; and one end of the upper / lower transverse rod is fixedly connected with the control rod, and the other end of the upper / lower transverse rod is detachably connected with the slurry cylinder upper / lower baffle 8. According to the field sampling device and a sampling method of the filling slurry, the field sampling of the filling slurry is realized by driving the opening and the closing of the upper baffle 8 and the lower baffle 11 by the control rod of the slurry cylinder control unit; and the slurry at a fixed point can be precisely collected, the sampling can not be influenced by low-concentration filling slurry at the upper part of a collecting field in the rising processes of sampled samples, and the property of the filling slurry in the collecting field can be accurately acquired.

Description

technical field [0001] The invention relates to an on-site sampling device for filling slurry and a method thereof, which can be applied to sampling filling slurry in goafs of underground mines adopting a filling mining method. Background technique [0002] The filling mining method has obvious advantages in fully recovering mineral resources, controlling deep mining ground pressure activities and improving environmental protection, and has achieved remarkable results. Therefore, it has attracted widespread attention in the mining industry. More and more widely used, 45% of large and medium-sized non-ferrous metal mines and 37% of gold mines in my country's underground mines use the filling method. [0003] This kind of mining method generally establishes a filling mixing station on the surface, prepares cement, sand, tailings, etc. according to a certain proportion into a fluid filling slurry, and passes through surface pipelines, drill holes connecting the surface and under...

AI Technical Summary

Problems solved by technology

At the same time, due to the influence of drainage water and pipe brushing water, the samples taken at the feeding nozzle cannot reflect the real situation of the stope; (2) The filling slurry will segregate in the underground stope, and the gelation of the filling slurry in different depth ranges The content, concentration, and composition of aggregate particles all have great changes, and these factors are the key to determining the strength of the filling body. Therefore, method 2 is affected by various factors such as the dilution of the upper low-concentration filling slurry during the sampling process. (3) Both of the above two methods are difficult to obtain actual filling slurry samples at different depths and positions in the filling stope, which greatly restricts the research on the filling slurry in the stope. The settlement characteristics of the inner filling aggregate and the distribution characteristics of the cement are also an important reason for the lack of research on the flow characteristics, settlement characteristics and strength distribution characteristics of the filling slurry in the underground stope.

Images