(2) Characteristics of cement filling method - it is one of the filling methods. It is to add appropriate cementing material to the filling material to make the loose filling material condense into a positive body with a certain strength to improve the mining condition of the pillar. And make the mining scheme more flexible to adapt to complex mining technical conditions. The purpose of cementation filling is also to reduce ore loss and depletion while at the same time protecting the surface more strictly. (iii) Development of the cementation filling method – it was used from Canada in the late 1950s and gradually promoted. Our Fankou lead zinc mine, the mining method using cemented fill the horizontal stratification of tailings, mine keel Jinchuan also use cemented filling method. 8.5inch electric scooter, city electric scooter, fashion electric scooter Ningbo Sunhon International Co., Ltd. , https://www.scooterelectricadult.com
Overview of cement filling mining method
(a) The cement filling mining method was developed on the basis of the use of the hydraulic filling mining method. From the hydraulic filling method, there are many shortcomings, and there are many shortcomings of dry filling. They have not solved the problem of compression settlement of the filling body well, and have not created safe and convenient conditions for returning the mining column, so it cannot be completely Prevent rock formation movement problems. Therefore, people have studied the cement filling method.