工程质量
工程質量
공정질량
QUALITY OF CIVIL ENGINEERING AND CONSTRUCTION
2015年
5期
74-77
,共4页
隧道爆破%地震波%控制爆破%空孔减震
隧道爆破%地震波%控製爆破%空孔減震
수도폭파%지진파%공제폭파%공공감진
the tunnel blasting%seismic wave%controlled blasting%empty hole shock absorption
介绍在建地铁宁高城轨隧道下穿既有宁芜货线隧道的爆破开挖振动控制,其左线最小净距仅约1.7m,右线最小净距4.0 m,隧道下穿高铁北联络道匝道桥,爆破环境复杂.为使保护目标不受破坏,采用了优化炮孔延期时间的控制、及时调整段药量及减震空孔参数等减震措施,使宁芜货线隧道以及地表的联络匝道桥等建筑位置处的地震波控制在安全范围内,获得了很好的工程效果.
介紹在建地鐵寧高城軌隧道下穿既有寧蕪貨線隧道的爆破開挖振動控製,其左線最小淨距僅約1.7m,右線最小淨距4.0 m,隧道下穿高鐵北聯絡道匝道橋,爆破環境複雜.為使保護目標不受破壞,採用瞭優化砲孔延期時間的控製、及時調整段藥量及減震空孔參數等減震措施,使寧蕪貨線隧道以及地錶的聯絡匝道橋等建築位置處的地震波控製在安全範圍內,穫得瞭很好的工程效果.
개소재건지철저고성궤수도하천기유저무화선수도적폭파개알진동공제,기좌선최소정거부약1.7m,우선최소정거4.0 m,수도하천고철북련락도잡도교,폭파배경복잡.위사보호목표불수파배,채용료우화포공연기시간적공제、급시조정단약량급감진공공삼수등감진조시,사저무화선수도이급지표적련락잡도교등건축위치처적지진파공제재안전범위내,획득료흔호적공정효과.
Introduced under the subway Ninggao tunnel under high city rail wear both NingWu cargo line tunnel excavation blasting vibration control,blasting environment complex that the minimum clearance of the left line of only about 1.7 m,the right line of minimum interval of 4.0 m and tunnel under wearhigh-speed rail north contact way ramp bridge. To protect the target from damage,adopted measures of optimization of blast hole delay time of control,adjust period of dosage and damping empty hole parameters,etc,which made NingWu cargo line contact ramp bridge tunnel and ground seismic control of location of building within the scope of the security,obtained good engineering results.
