The reporter learned from the Provincial Coal Management Bureau that from May 20 to June 30, the bureau carried out "consultation" type large-scale investigation activities for major disasters such as gas, rock burst, water damage, and roof collapse in coal mines in the province.

　　It is reported that this "consultation" type large-scale investigation activity is divided into areas according to the coal mine disaster situation in the province: First, Yulin area, focusing on the investigation of super-layer cross-border mining, mining of security coal pillars, upper and lower floor mining, use of illegal system mining, and the use of elimination techniques 6 key issues of unreliable mining, isolation and sealing, etc .; second, Xianyang and Baoji areas, focusing on investigation and assessment of coal mine rockburst propensity, etc .; third, Tongchuan and Huangling areas, focusing on investigation of overburden strata in Jurassic coal seams Investigation and management of river sandstone water and ancient riverbed water, implementation of coal mine water prevention and control institutions, personnel, and measures for water exploration and drainage; fourth, Weinan area, focusing on investigation of mine ventilation system and water exploration and treatment of mined-out areas; fifth, mine under construction , Focus on checking the establishment of the safety management organization of the construction unit and the implementation of the main responsibility, the implementation of the safety responsibility of the construction, supervision and design units, etc.

　　At the same time, the major investigation also carried out the implementation status of mine ventilation system, wind point air volume configuration, local ventilation management, old kiln water, water control in goaf, elimination of the use of electromechanical equipment, improvement of safety protection devices for transportation facilities and equipment, and shutdown and shutdown measures Conduct key investigations. (Reporter Zhang Binfeng)