Process introduction
Gangue grouting filling process
generally refers to that the mixed
cementing material slurry is
conveyed to the worked-out
section after filling the worked-
out section with gangue, to make
the material slurry gradually
penetrate the whole coal gangue
filling body by using its good
fluidity, thereby forming good
cementing strength. Our company designed and
constructed the filling system for
Shandong Xinwen Mining Group
Zhaizhen Coal Mine, which aims to
effectively control surface
subsidence and liberate the
unexploited coal resources under
industrial plaza. Meanwhile, it can
solve the safety, environment, land use and other problems of
gangue hill. This technology has won national
scientific and technological
progress second award and
provincial departmental scientific
and technological progress first
award. Technical innovation: Gangue grouting filling
technology can achieve that the
gangue or waste rock is not risen
out of the mineshaft by carrying
out underground filling. Besides, it is designed and equipped with
filling tamping hydraulic support. Adopting the new alkali-activated
material can effectively improve
the fluidity and stability of
material slurry. Reasonable slurrying process can
effectively enhance the
permeability of material slurry. Adopting the new-type
precipitator underground can
effectively reduce the amount of
dust underground and improve
the mineshaft environment.
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