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)使(shi)用ZDY4300LP型履帶(dai)鉆(zhan)(zhan)(zhan)(zhan)(zhan)機(ji)(ji)(ji)(ji)(ji)共進(jin)(jin)(jin)行(xing)了(le)兩種鉆(zhan)(zhan)(zhan)(zhan)(zhan)孔(kong)施(shi)(shi)工(gong)(gong)。第一種為本煤層(ceng)瓦斯抽(chou)放(fang)鉆(zhan)(zhan)(zhan)(zhan)(zhan)孔(kong)，在寺河(he)煤礦二(er)號井97210回(hui)風巷(xiang)施(shi)(shi)工(gong)(gong)本煤層(ceng)瓦斯抽(chou)放(fang)孔(kong)47個，累積進(jin)(jin)(jin)尺(chi)7292.5米，月累計進(jin)(jin)(jin)尺(chi)6629.5m，日均進(jin)(jin)(jin)尺(chi)221m，成(cheng)孔(kong)率(lv)達90%，比(bi)礦方現有的(de)(de)履帶(dai)鉆(zhan)(zhan)(zhan)(zhan)(zhan)機(ji)(ji)(ji)(ji)(ji)施(shi)(shi)工(gong)(gong)效(xiao)(xiao)率(lv)提高10%。第二(er)種為頂(ding)板高位鉆(zhan)(zhan)(zhan)(zhan)(zhan)孔(kong)，在97210回(hui)風巷(xiang)8鉆(zhan)(zhan)(zhan)(zhan)(zhan)場(chang)和(he)9鉆(zhan)(zhan)(zhan)(zhan)(zhan)場(chang)進(jin)(jin)(jin)行(xing)，鉆(zhan)(zhan)(zhan)(zhan)(zhan)場(chang)間距50m；每(mei)鉆(zhan)(zhan)(zhan)(zhan)(zhan)場(chang)設計為19°和(he)22°兩組角度(du)的(de)(de)鉆(zhan)(zhan)(zhan)(zhan)(zhan)孔(kong)，每(mei)組7個，孔(kong)深110m，孔(kong)徑Φ113mm；施(shi)(shi)工(gong)(gong)頂(ding)板高位鉆(zhan)(zhan)(zhan)(zhan)(zhan)孔(kong)時(shi)(shi)，鉆(zhan)(zhan)(zhan)(zhan)(zhan)機(ji)(ji)(ji)(ji)(ji)給(gei)進(jin)(jin)(jin)壓(ya)力(li)、回(hui)轉(zhuan)壓(ya)力(li)大，鉆(zhan)(zhan)(zhan)(zhan)(zhan)機(ji)(ji)(ji)(ji)(ji)需穩固(gu)牢靠，礦方現有的(de)(de)履帶(dai)鉆(zhan)(zhan)(zhan)(zhan)(zhan)機(ji)(ji)(ji)(ji)(ji)角度(du)調節(jie)范圍小、整體(ti)(ti)結構剛性差(cha)，無法進(jin)(jin)(jin)行(xing)頂(ding)板高位鉆(zhan)(zhan)(zhan)(zhan)(zhan)孔(kong)施(shi)(shi)工(gong)(gong)，當時(shi)(shi)只(zhi)能選擇(ze)已有的(de)(de)分體(ti)(ti)式(shi)鉆(zhan)(zhan)(zhan)(zhan)(zhan)機(ji)(ji)(ji)(ji)(ji)進(jin)(jin)(jin)行(xing)施(shi)(shi)工(gong)(gong)，但分體(ti)(ti)式(shi)鉆(zhan)(zhan)(zhan)(zhan)(zhan)機(ji)(ji)(ji)(ji)(ji)搬遷困難，鉆(zhan)(zhan)(zhan)(zhan)(zhan)孔(kong)施(shi)(shi)工(gong)(gong)效(xiao)(xiao)率(lv)低。西安研(yan)究院研(yan)制的(de)(de)ZDY4300LP鉆(zhan)(zhan)(zhan)(zhan)(zhan)機(ji)(ji)(ji)(ji)(ji)成(cheng)功解決(jue)了(le)上述問題，共施(shi)(shi)工(gong)(gong)頂(ding)板高位鉆(zhan)(zhan)(zhan)(zhan)(zhan)孔(kong)28個，累積進(jin)(jin)(jin)尺(chi)3080米，成(cheng)孔(kong)率(lv)100%，與礦方使(shi)用的(de)(de)分體(ti)(ti)式(shi)鉆(zhan)(zhan)(zhan)(zhan)(zhan)機(ji)(ji)(ji)(ji)(ji)相(xiang)比(bi)施(shi)(shi)工(gong)(gong)效(xiao)(xiao)率(lv)提高30%。鉆(zhan)(zhan)(zhan)(zhan)(zhan)機(ji)(ji)(ji)(ji)(ji)的(de)(de)使(shi)用效(xiao)(xiao)果得(de)到了(le)寺河(he)煤礦二(er)號井的(de)(de)認可。現場(chang)試驗表(biao)明(ming)，此(ci)款鉆(zhan)(zhan)(zhan)(zhan)(zhan)機(ji)(ji)(ji)(ji)(ji)具有穩固(gu)可靠、操作簡單、搬遷快捷等(deng)特點，是一款可滿足多種施(shi)(shi)工(gong)(gong)需要的(de)(de)整體(ti)(ti)式(shi)履帶(dai)鉆(zhan)(zhan)(zhan)(zhan)(zhan)機(ji)(ji)(ji)(ji)(ji)。