王村矿煤巷高冒区聚氨酯泡沫堵漏风技术

Spraying Urethane Foam for Air－ leakage Blocking in the Area of Roadway Roof－fall in Wangcun Coal Mine

王村矿 2809二分层工作面煤巷与上分层采空区冒落漏通，漏风量达 310m3／ min。为减少向上分层采空区的漏风，防止浮煤自燃，应用聚氨酯泡沫材料对该高冒区进行 喷涂堵漏，使该处漏风降低到 19． 2m3／ min，堵漏效果显著。

The roadway is connected with gob of the upper slice in No.2809 face of Wangcun Coal Mine as a result of roadway roof fall and the a mount of leaked air is up to 310m3/min. In order to decrease air leakage toward gob of the upper slice and prevent self combustion of float coal, urethane foam is sprayed into the area of roadway roof fall and the air leakage is thus droppe d to 19.2m3/min., so the effect of air leakage blocking is outstanding.