煤矿机电
煤礦機電
매광궤전
COLLIERY MECHANICAL & ELECTRICAL TECHNOLOGY
2012年
5期
99-100,103
,共3页
人工冻结%冻结井壁%立井井筒
人工凍結%凍結井壁%立井井筒
인공동결%동결정벽%립정정통
artificial freezing%freezing shaft-wall%vertical shaft
西部地区正成为我国煤矿建设的重点地区。针对西部地区地质特点，探讨冻结井壁结构的优化途径。单层井壁是适应不稳定岩层的冻结井壁优化结构，但解决井壁漏水问题的技术途径，尚需深入研究。对于双层混凝土复合井壁，外层井壁厚度可按现行规范规定的最小厚度拟定；在不提高混凝土标号的前提下，可按井壁内缘实际的双向应力状态优化设计内层井壁材料强度，但需经过长期监测确定井壁荷载折减系数。
西部地區正成為我國煤礦建設的重點地區。針對西部地區地質特點，探討凍結井壁結構的優化途徑。單層井壁是適應不穩定巖層的凍結井壁優化結構，但解決井壁漏水問題的技術途徑，尚需深入研究。對于雙層混凝土複閤井壁，外層井壁厚度可按現行規範規定的最小厚度擬定；在不提高混凝土標號的前提下，可按井壁內緣實際的雙嚮應力狀態優化設計內層井壁材料彊度，但需經過長期鑑測確定井壁荷載摺減繫數。
서부지구정성위아국매광건설적중점지구。침대서부지구지질특점，탐토동결정벽결구적우화도경。단층정벽시괄응불은정암층적동결정벽우화결구，단해결정벽루수문제적기술도경，상수심입연구。대우쌍층혼응토복합정벽，외층정벽후도가안현행규범규정적최소후도의정；재불제고혼응토표호적전제하，가안정벽내연실제적쌍향응력상태우화설계내층정벽재료강도，단수경과장기감측학정정벽하재절감계수。
The western region is becoming a focal area of mine construction in China. The feasible optimization of the freezing shaft-wall structure is discussed in view of the features of strata in the western region. The mono-layer structure will be a favorite option, but the water-proof technique is required further improvement. For the double- layer structure of complex cementing shaft, the outer layer may have the minimum thickness according to the current code, and the strength of inner layer may be optimized according to the planar stress at inner wall without upgrading the cement, but the discount coefficient of shaft-wall load must be set by long-term monitoring.
