煤矿现代化
煤礦現代化
매광현대화
COAL MINE MODERNIZATION
2012年
4期
11-13
,共3页
上段井壁%冻结圈径%泄压孔
上段井壁%凍結圈徑%洩壓孔
상단정벽%동결권경%설압공
Upper of shaft lining%Freeze circle diameter%Pressure relief hole
麦垛山矿井副立井井筒按照普通凿井法施工至-251m时,因井筒涌水量大,无法继续施工。经论证决定井筒下段（-251m以下）采用冻结法施工,并采取适当加大冻结圈径、采用差异冻结方式、施工泄压孔等措施,对已施工井筒进行保护,取得了较好的效果,已施工井筒没有受到冻结工程的影响和破坏。
麥垛山礦井副立井井筒按照普通鑿井法施工至-251m時,因井筒湧水量大,無法繼續施工。經論證決定井筒下段（-251m以下）採用凍結法施工,併採取適噹加大凍結圈徑、採用差異凍結方式、施工洩壓孔等措施,對已施工井筒進行保護,取得瞭較好的效果,已施工井筒沒有受到凍結工程的影響和破壞。
맥타산광정부립정정통안조보통착정법시공지-251m시,인정통용수량대,무법계속시공。경론증결정정통하단（-251m이하）채용동결법시공,병채취괄당가대동결권경、채용차이동결방식、시공설압공등조시,대이시공정통진행보호,취득료교호적효과,이시공정통몰유수도동결공정적영향화파배。
Maiduoshan Mine＇s Vice Mine Shaft construction in accordance with the ordinary sinking to-25 lm, due to borehole water in- flow volume, can not continue with the work. It has been demonstrated, the decision wellbore under paragraph （-251m） using the freezing method construction, and to take appropriate increase the freeze circle diameter, using the difference measures to freeze the way, construction and pressure relief hole, protection of Construction wellbore,Achieved good resuhs, has been the construction of the wellbore is not subject to freeze the project impact and damage.
