DEVICE FOR PIPPING-UP OF SOIL ABOVE PIT Russian patent published in 2001 - IPC

FIELD: petroleum, gas and mining industries for remote ripping-up of laid-up or exhausted pits and used as storages covered with soil, petroleum, gas and hydrogeologic wells. SUBSTANCE: device has a casing in the form of a truncated cone or truncated pyramid made for attachment with the smaller end to the mouth of the pit shaft, vertical partition installed inside the casing for alignment with the plane of longitudinal section of the pit shaft, main and auxiliary sources of high-pressure gases with initiation devices; the main source of high-pressure gases is installed above the smaller end of the casing, and the auxiliary one is made for placement on the vertical partition above the main source in alignment with the pit shaft, the inner surface of the casing and at least one of the vertical surfaces of the partition is provided with an antiadhesion coating, the initiation device of the auxiliary source of high-pressure gases is provided with a device for actuation delay relative to the initiation device of the main source of high-pressure gases. EFFECT: prevented malfunctions (negative effect of the well content on people) and enhanced capacity (reduced ripping-up time). 3 dwg