本網齊河訊 近日,邱集煤礦在礦井11煤2號(hao)煤倉(cang)創新采(cai)用“七花眼”方(fang)法施工泄矸(gan)導孔,成功實(shi)現降本增效。
當前,煤倉施(shi)工方法普遍采用(yong)反井(jing)鉆(zhan)機(ji)施(shi)工泄(xie)(xie)矸孔(kong),施(shi)工工藝(yi)鉆(zhan)機(ji)需(xu)要租賃,鉆(zhan)機(ji)到礦后需(xu)拆卸、運(yun)輸、安裝,過程(cheng)繁瑣、費用(yong)較高、占用(yong)人員(yuan)多(duo),且存在安全隱患(huan)。該(gai)礦生產技術人員(yuan)結合(he)礦井(jing)11煤施(shi)工的兩個煤倉垂深距離較短的實(shi)際,創新(xin)采用(yong)“七花眼(yan)”法施(shi)工泄(xie)(xie)矸導孔(kong)。
該工(gong)藝使用礦(kuang)用履帶式全(quan)液(ye)壓坑道(dao)鉆(zhan)(zhan)(zhan)(zhan)機(ji),在煤(mei)倉上(shang)口(kou)調整好鉆(zhan)(zhan)(zhan)(zhan)機(ji)后,以煤(mei)倉中(zhong)線(xian)為(wei)圓心環(huan)繞煤(mei)倉中(zhong)線(xian)施工(gong)7個(ge)直徑(jing)為(wei)300mm鉆(zhan)(zhan)(zhan)(zhan)孔(kong)(kong),鉆(zhan)(zhan)(zhan)(zhan)孔(kong)(kong)施工(gong)后,七個(ge)鉆(zhan)(zhan)(zhan)(zhan)孔(kong)(kong)最終形成(cheng)一個(ge)直徑(jing)900mm泄矸孔(kong)(kong)。這種工(gong)藝施工(gong)簡單(dan),操作(zuo)方(fang)便,安全(quan)系數較高,相比租賃反(fan)井(jing)鉆(zhan)(zhan)(zhan)(zhan)機(ji)再施工(gong),減少了中(zhong)間環(huan)節(jie),提高了工(gong)效,還(huan)能節(jie)省(sheng)鉆(zhan)(zhan)(zhan)(zhan)機(ji)租賃費(fei)、電(dian)費(fei)、人工(gong)、油(you)料等費(fei)用6萬余元。(攝(she)影:張超)