English to French Tech/Engineering Mining & Minerals / Gems In a patent relating to a DETECTION METHOD FOR DETERMINING SPATIAL FORM OF CONCEALED COLLASPE COLUMN OF STONE DRIFT FLOOR

The present invention relates to a collapse column detection method, in particular to a detection method for determining a spatial form of a concealed collapse column of a stone drift floor and belongs to the technical field of safe production of coal mine roadways.

As everyone knows, a mine roadway can be divided into three classes: a development roadway, a preparation roadway and a recovery roadway in accordance with purposes and service ranges. A stone drift in a development period includes a return air main roadway, an adhesive main roadway and a track main roadway and etc. In a stone drift tunneling process, disastrous accidents such as water burst easily occur when encountering the collapse column under the stone drift floor mistakenly.