Fangyuan Group's concrete pump for coal mining passed industrial trials

In order to cooperate with Huainan Mining Group to carry out research on key technology of low permeability coal seam group without coal pillar coal and gas communion, to realize the filling of the roadway with integral pouring of concrete without pillars, to replace imported equipment with high cost and large investment, and to adapt In order to meet the actual requirements for filling under different coal seam thicknesses and geological conditions, Fangyuan Group and Huainan Mining Group jointly developed the HBMG-40/12-110S coal mine concrete pump. After the pump was tested on the ground by simulated pumping, a 350m long-distance pumping test was conducted at the 1241 working face of Xieqiao Mine from May to August this year. The pump was used to test large aggregate concrete filling materials with diameters of 8mm, 15mm, and 30mm. The length of the test-filled retaining wall is approximately 30m, and the amount of pumped filling material is nearly 600T. The overall use of the concrete pump for the HBMG40-08-110 coal mine is good and the pumping can meet the needs of different materials.

Expert assessment team HBMG-40/12-110 coal mine large flow coarse aggregate concrete filling pump carried out expert comments, the views are as follows: 1, in Xieqiao mine 12418 work face HBMG-40/12-110 coal mine The large-flow coarse aggregate concrete filling pump has been industrially tested, and the experiment has been successful; 2. The equipment integrates feeding, stirring, water supply, and transportation into one body, and the degree of integration is high. The mixing of the material and the water is mixed with the pear knife type strong stirring, preventing The jamming of large particle materials has large pumping capacity, strong adaptability, and good equipment use effect, and it satisfies the need for long-distance and large-flow fast-reserve lane filling; 3. The components are operating normally during the test, the instrument indicates accurately, and the pump is filled as a whole. Stable performance; 4, the device can replace the imported filling pump, is conducive to coal pillars to extend the empty road coal and gas communal technology to promote the use, greatly improve the pumping capacity and work efficiency, has broad application prospects.