CAJ | 학술논문

冻结立井外壁施工往往因为冻结壁、施工与设计等原因，造成外壁破坏、断管、甚至透水淹井事故，目前除了对冻结段冻结壁加强冻结，提高外壁混凝土标号、缩短段高等有限手段来防止事故发生外，没有更为有效合理的方法处理上述问题。淮南矿业集团某矿第二副井表土段340 m ，黏土层总厚度占表土段的60％以上，其中2层厚膨胀黏土，具有一定膨胀性，施工难度很大。为了保证表层土段外壁掘砌安全快速地施工，采取了如加强冻结壁温度场的预测预报、井帮温度准确控制、设置壁爪和卸压槽、敷设泡沫板、控制混凝土原材料质量、研究特殊快速混凝土、控制循环时间等多种措施，实现了冻结段快速、安全地通过，没有出现断管、透水等事故。
동결립정외벽시공왕왕인위동결벽、시공여설계등원인，조성외벽파배、단관、심지투수엄정사고，목전제료대동결단동결벽가강동결，제고외벽혼응토표호、축단단고등유한수단래방지사고발생외，몰유경위유효합리적방법처리상술문제。회남광업집단모광제이부정표토단340 m ，점토층총후도점표토단적60％이상，기중2층후팽창점토，구유일정팽창성，시공난도흔대。위료보증표층토단외벽굴체안전쾌속지시공，채취료여가강동결벽온도장적예측예보、정방온도준학공제、설치벽조화사압조、부설포말판、공제혼응토원재료질량、연구특수쾌속혼응토、공제순배시간등다충조시，실현료동결단쾌속、안전지통과，몰유출현단관、투수등사고。
The outer wall of frozen shaft are often damaged by frozen wall design and construction ,cau-sing the damage of outer wall ,tube breakage even flooded accident. We had a few of methods to solve above problems such as increasing frozen section of outer wall ,improving the outer wall concrete grade ,shortening the period of high ,no more effective way to handle that problem. The mine of Hua-inan mining group’s second auxiliary shaft have 340m clay layer ,more than 60% of the total thickness of overburden clay layer section ,including 2 layer thickness swelling of clay ,So the construction is very difficult. In order to ensure safety construction ,we took many prevention methods ,such as pre-dicting temperature field’s temperature control ,controlling accuracy well’s temperature ,setting wall claw and unloading groove ,laying foam board ,controlling the quality of the raw materials for the concrete ,controlling time of cycle and the concrete's raw materials.It realizes quickly and safely through the frozen section without broken tube floods and other accidents.