TEMPORARY ISOLATION WALL WITH DOUBLE-LAYER AIR BAGS FOR CLOSED WIND PATH ROADWAY OF UNDERGROUND COAL MINE

摘要

Provided is a temporary isolation wall with double-layer air bags for closed wind path roadway of underground coal mine, and belongs to the technical field of prevention for coal self-combustion in underground coal mines. The temporary isolation wall comprises an air inflation bag body (1), a fixed assembly (3) and an auxiliary fire extinguishment channel (124), the air inflation bag body (1) is a double-layer bag body structure formed by an outer-layer air bag (11) and an inner-layer air bag (12), the shape of the air-inflated air inflation bag body (1) is a columnar structure, the outer-layer air bag (11) is prepared from fireproof EVA foaming cotton (111), the inner-layer air bag (12) is prepared from compact asbestos cloth (121); the fixed assembly (3) comprises a connection rope (13) and a fixed pile (33), an air inflation port (122) is arranged in the central position of the bottom surface of the inner-layer air bag (12), the air inflation port (122) is connected with an air inflation pump (2) through a pipeline, an exhaust valve (126) is arranged at the part adjacent to the air inflation port (122). The isolation wall is simple in structure, convenient to install, efficient and convenient, and capable of saving manpower and material resources.