Experimental study on foam dust reduction technology in rock roadway heading face
In view of the current situation of large dust concentration in the excavation face of mudstone rock roadway,the foam dust reduction technology is used to control the large dust concentration in the excavation face.The mine foam dust re-duction device is installed behind the fully mechanized excavator,and the foam dust reduction spray is installed at the head to carry out the foam dust reduction test.The effects of different foaming agent concentration,different wind pressure,water pressure and other parameters on the test results were tested.The test results show that the foam dust reduction technology has a good inhibitory effect on the total dust and respirable dust at the head of the rock roadway and the driver's room.When the water pressure is 1.5 MPa,the wind pressure is 0.5 MPa,and the foaming agent concentration is 0.5％,the total dust and respirable dust reduction rates at the driver's room are 86.88％and 77.32％,respectively,which achieves the purpose of dust suppression and dust reduction from the source.
mudstone rock roadwaydustfoam dust reductiontotal dustrespirable dust
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