【作者】 曹光保； 徐颖；

【Author】 Cao Guangbao Xu Ying (Anhui University of Science and Technology,Huainan 232001)

【机构】 安徽理工大学；

【摘要】 由于地表沉降,引起临涣矿主井井塔和主井井筒之间发生了竖向相对位移,因两者的相互约束,可能导致井塔基础圈梁变形破坏。为改变其状况,经科学论证,决定采用控制爆破技术切除井筒外壁井肩处一定高度内的钢筋混凝土井壁。经认真设计和精心施工,采取浅眼多孔、小药量多段别毫秒延迟爆破、空气垫层装药及严格的安全技术措施,切割爆破取得圆满成功,对矿井生产没有造成任何影响。更多还原

【Abstract】 Because settlement of the earth’ s surface,vertically relative displacement between the main well tower and the main well casing of Linhuan mine was occurred,and it is possible to bring on the deforming destruction of the well tower foundation tie beam for reciprocal bond between the two.In order to modify such condition,controlled blasting technique was adopted to cut a certain height scope of reinforced concrete well wall at the well shoulder of the well casing ectotheca.By conscientious de- sign and meticulous construction,adopting low multi-holes,small explosion,multi-segments,mini- second blasting,air mat charge and strict safety technology,cutting blasting obtained satisfied success and gave no influence to mine manufacture.更多还原