本(ben)網齊河訊(xun) 近日，邱集煤礦在礦井11煤2號煤倉創新采用“七花眼”方法施工泄矸導孔，成功實現降本增效。
當前，煤倉(cang)施(shi)工(gong)(gong)(gong)(gong)方法(fa)普遍采用(yong)反(fan)井(jing)鉆(zhan)(zhan)機施(shi)工(gong)(gong)(gong)(gong)泄矸(gan)孔(kong)，施(shi)工(gong)(gong)(gong)(gong)工(gong)(gong)(gong)(gong)藝鉆(zhan)(zhan)機需要租賃，鉆(zhan)(zhan)機到礦后需拆卸、運輸、安裝，過程繁瑣、費用(yong)較(jiao)高、占用(yong)人員(yuan)多，且存在安全隱患。該礦生產技(ji)術人員(yuan)結合礦井(jing)11煤施(shi)工(gong)(gong)(gong)(gong)的(de)兩個煤倉(cang)垂深距離較(jiao)短的(de)實際，創新(xin)采用(yong)“七花眼”法(fa)施(shi)工(gong)(gong)(gong)(gong)泄矸(gan)導孔(kong)。
該(gai)工藝使用(yong)(yong)(yong)礦用(yong)(yong)(yong)履帶式全(quan)(quan)液壓坑道鉆(zhan)(zhan)機，在煤(mei)(mei)倉上口(kou)調(diao)整好鉆(zhan)(zhan)機后(hou)(hou)，以煤(mei)(mei)倉中(zhong)線為(wei)(wei)圓心環繞(rao)煤(mei)(mei)倉中(zhong)線施工7個(ge)直徑(jing)為(wei)(wei)300mm鉆(zhan)(zhan)孔，鉆(zhan)(zhan)孔施工后(hou)(hou)，七個(ge)鉆(zhan)(zhan)孔最終形成一(yi)個(ge)直徑(jing)900mm泄矸孔。這種(zhong)工藝施工簡單，操作方便，安全(quan)(quan)系數較高，相比租賃反井鉆(zhan)(zhan)機再施工，減少了(le)中(zhong)間環節，提高了(le)工效，還能節省鉆(zhan)(zhan)機租賃費、電(dian)費、人工、油料等費用(yong)(yong)(yong)6萬余元。（攝影(ying)：張超）
