Bag type filling machine for open-air end slope coal-pressing filling mining

Abstract

The invention discloses a bag type filling machine for open-air end slope coal-pressing filling mining. The bag type filling machine comprises a machine body, a walking device, a filling pipeline, a suspension device and a filling bag, wherein the bag type filling machine is operated to the end of a filling roadway, then filling materials are injected into the filling bag through the filling pipeline, and in the process that the bag type filling machine retreats outwards from the end of the filling roadway, and the whole filling roadway is filled with the filling materials in the mode of injecting the filling materials into the filling bag, so that the stability of an open-air end slope is guaranteed. According to the bag type filling machine, the filling rate of the open-air end slope mining roadway can be effectively increased, the filling mining efficiency is greatly improved, the strength of a filling body can be improved, and the stability of the open-air end slope is guaranteed;meanwhile, coal pillars between the open-air end slope filling mining roadways can be greatly reduced or omitted, the recovery rate of open-air end slope covering resources is greatly increased, and the economical efficiency and applicability of the open-air end slope coal-pressing filling mining technology are improved.

Description

technical field [0001] The invention belongs to the technical field of open-pit end-side pressure coal filling mining, and in particular relates to a bag-type filling machine used for open-pit end-side pressure coal filling mining. Background technique [0002] As the basic energy of our country, coal plays a pivotal role in the energy structure. In recent years, with the rapid development of the economy and society, the demand for coal resources has also increased significantly. Among them, open-pit mining is one of the important means of coal resource mining, and its mining scale has also increased by leaps and bounds. This also makes open-pit mining slopes The problem of serious loss of overburdened coal resources has become increasingly prominent. [0003] At present, the main method of coal mining on open-pit slopes is end-side mining. The essence of this method is to recover coal resources in the form of tunneling in the open-pit end-side. However, there are two main...

AI Technical Summary

Problems solved by technology

However, there are two main technical defects in this mining method: (1) This mining method usually requires a safety coal pillar to be set between two adjacent mining roadways, which directly leads to a low recovery rate of coal resources covered by side walls ; (2) This kind of mining method only leaves protective coal pillars between the mining roadways to support the overlying strata, or performs simple roadway dumping filling. Not enough, when the open-pit sidewall is mined in a large area, the coal pillar may become unstable under the long-term pressure of the overlying strata, which brings huge hidden dangers to the safe production of the mining area and seriously threatens the production equipment and the safety of the staff in the mining area. life safety

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