The Techniques Study Of Extinguish And Preventing Of The Coal Spontaneous Combustion In The First Fully Mechanized Long-wall Top-coal Caving Face Of Ciyaobu 2～(nd) Mine

The Ciyaobu 2nd mine fully mechanized long-wall top-coal caving face is the first one in lingwu coal zone, it's very dangerous because of the plenty of particle coal in the gob and the coal is very easy to autoignition in 2nd coal mine . The gas characteristic parameter of coal spontaneous was get by the test of coal spontaneous time,and provide date evidence for buliding the monitor system of the coal spon-com (Spontaneous Combustion).Acorrding to the monitoting date ,production speed and the coal recover precentage ,the min produce speed and the coal recover precentage was determined on the actually condition.At the same time advance the new concept of mult-average parameter.Buliding the mult-fuction pouring gel system of extinguish fire basic on the feature of the coal com-spon in the Ciyaobu 2nd coal mine, it can be working for inputing composite-gel,thickening gel and pure gel to extinguish fire or high temperature point,and the system can be controlled automaticly.The pour gel extinguish fire system and the others extinguish fire system can be used toghter or single according to the actual degree of coal com-spon.Atlast ,indentified the keypoint dangeours area of the coal com-spon,and controled the high temperature point at the begin of product process, prevented and againsted the keypoint dangerous zone of coal com-spond during the course of acrossing the old way and stoping product returning the equipment.By way of practice proved that the prventing and extinguishing the coal spon-com technique was efftive, the prventing and extinguishing fire system can guarantee that there are no the coal spontaneous combust on the usualy production condition.