近日，西安研究院研制的ZDY4300LP型履帶鉆機在晉煤集團寺河煤礦二號井成功完成工業性試驗。
ZDY4300LP型履帶鉆機研制是西安研究院2016年6月根據市場需求追加立項的技術創新項目研究成果。它結合了西安研究院成熟的“炮塔式”履帶鉆機和ZDY4300LF（A）鉆機的結構特點，是一款具有跨皮帶功能、水平開孔高度可調節的整體式履帶鉆機。2017年4月，ZDY4300LP型科研樣機調試完成后，被銷售至寺河煤礦二號井，在保證滿足礦井生產需求的前提下，結合實際生產進行工業性試驗。相關部門通力協作，檢驗鉆機的各項性能參數。
現場(chang)(chang)使用ZDY4300LP型履(lv)(lv)帶鉆(zhan)(zhan)(zhan)(zhan)(zhan)(zhan)(zhan)(zhan)機(ji)共(gong)進(jin)行了兩種(zhong)鉆(zhan)(zhan)(zhan)(zhan)(zhan)(zhan)(zhan)(zhan)孔(kong)(kong)(kong)施(shi)(shi)(shi)工(gong)(gong)。第一(yi)種(zhong)為(wei)本煤(mei)(mei)層(ceng)瓦斯抽放(fang)鉆(zhan)(zhan)(zhan)(zhan)(zhan)(zhan)(zhan)(zhan)孔(kong)(kong)(kong)，在寺(si)河煤(mei)(mei)礦(kuang)(kuang)二(er)號井97210回風巷施(shi)(shi)(shi)工(gong)(gong)本煤(mei)(mei)層(ceng)瓦斯抽放(fang)孔(kong)(kong)(kong)47個(ge)(ge)，累積(ji)進(jin)尺7292.5米(mi)，月累計(ji)進(jin)尺6629.5m，日(ri)均進(jin)尺221m，成孔(kong)(kong)(kong)率(lv)達90%，比礦(kuang)(kuang)方(fang)(fang)現有(you)的(de)(de)履(lv)(lv)帶鉆(zhan)(zhan)(zhan)(zhan)(zhan)(zhan)(zhan)(zhan)機(ji)施(shi)(shi)(shi)工(gong)(gong)效率(lv)提高(gao)(gao)10%。第二(er)種(zhong)為(wei)頂板高(gao)(gao)位鉆(zhan)(zhan)(zhan)(zhan)(zhan)(zhan)(zhan)(zhan)孔(kong)(kong)(kong)，在97210回風巷8鉆(zhan)(zhan)(zhan)(zhan)(zhan)(zhan)(zhan)(zhan)場(chang)(chang)和9鉆(zhan)(zhan)(zhan)(zhan)(zhan)(zhan)(zhan)(zhan)場(chang)(chang)進(jin)行，鉆(zhan)(zhan)(zhan)(zhan)(zhan)(zhan)(zhan)(zhan)場(chang)(chang)間距50m；每鉆(zhan)(zhan)(zhan)(zhan)(zhan)(zhan)(zhan)(zhan)場(chang)(chang)設(she)計(ji)為(wei)19°和22°兩組(zu)角度(du)的(de)(de)鉆(zhan)(zhan)(zhan)(zhan)(zhan)(zhan)(zhan)(zhan)孔(kong)(kong)(kong)，每組(zu)7個(ge)(ge)，孔(kong)(kong)(kong)深(shen)110m，孔(kong)(kong)(kong)徑Φ113mm；施(shi)(shi)(shi)工(gong)(gong)頂板高(gao)(gao)位鉆(zhan)(zhan)(zhan)(zhan)(zhan)(zhan)(zhan)(zhan)孔(kong)(kong)(kong)時，鉆(zhan)(zhan)(zhan)(zhan)(zhan)(zhan)(zhan)(zhan)機(ji)給進(jin)壓力(li)、回轉壓力(li)大，鉆(zhan)(zhan)(zhan)(zhan)(zhan)(zhan)(zhan)(zhan)機(ji)需(xu)穩固牢(lao)靠，礦(kuang)(kuang)方(fang)(fang)現有(you)的(de)(de)履(lv)(lv)帶鉆(zhan)(zhan)(zhan)(zhan)(zhan)(zhan)(zhan)(zhan)機(ji)角度(du)調節(jie)范圍小、整體(ti)結構剛(gang)性(xing)差，無法進(jin)行頂板高(gao)(gao)位鉆(zhan)(zhan)(zhan)(zhan)(zhan)(zhan)(zhan)(zhan)孔(kong)(kong)(kong)施(shi)(shi)(shi)工(gong)(gong)，當時只(zhi)能(neng)選擇已有(you)的(de)(de)分體(ti)式鉆(zhan)(zhan)(zhan)(zhan)(zhan)(zhan)(zhan)(zhan)機(ji)進(jin)行施(shi)(shi)(shi)工(gong)(gong)，但分體(ti)式鉆(zhan)(zhan)(zhan)(zhan)(zhan)(zhan)(zhan)(zhan)機(ji)搬遷困(kun)難，鉆(zhan)(zhan)(zhan)(zhan)(zhan)(zhan)(zhan)(zhan)孔(kong)(kong)(kong)施(shi)(shi)(shi)工(gong)(gong)效率(lv)低。西安(an)研(yan)究院研(yan)制的(de)(de)ZDY4300LP鉆(zhan)(zhan)(zhan)(zhan)(zhan)(zhan)(zhan)(zhan)機(ji)成功(gong)解決了上述問題，共(gong)施(shi)(shi)(shi)工(gong)(gong)頂板高(gao)(gao)位鉆(zhan)(zhan)(zhan)(zhan)(zhan)(zhan)(zhan)(zhan)孔(kong)(kong)(kong)28個(ge)(ge)，累積(ji)進(jin)尺3080米(mi)，成孔(kong)(kong)(kong)率(lv)100%，與礦(kuang)(kuang)方(fang)(fang)使用的(de)(de)分體(ti)式鉆(zhan)(zhan)(zhan)(zhan)(zhan)(zhan)(zhan)(zhan)機(ji)相比施(shi)(shi)(shi)工(gong)(gong)效率(lv)提高(gao)(gao)30%。鉆(zhan)(zhan)(zhan)(zhan)(zhan)(zhan)(zhan)(zhan)機(ji)的(de)(de)使用效果(guo)得到(dao)了寺(si)河煤(mei)(mei)礦(kuang)(kuang)二(er)號井的(de)(de)認可(ke)(ke)。現場(chang)(chang)試驗表明(ming)，此款鉆(zhan)(zhan)(zhan)(zhan)(zhan)(zhan)(zhan)(zhan)機(ji)具有(you)穩固可(ke)(ke)靠、操作簡單、搬遷快捷(jie)等(deng)特點，是一(yi)款可(ke)(ke)滿足(zu)多種(zhong)施(shi)(shi)(shi)工(gong)(gong)需(xu)要的(de)(de)整體(ti)式履(lv)(lv)帶鉆(zhan)(zhan)(zhan)(zhan)(zhan)(zhan)(zhan)(zhan)機(ji)。