CAJ | 학술논문

确保既有线行车安全是铁路既有线路堑拓宽爆破施工首先要考虑的因素,通常采用的爆破方法需要大量的防护设施,耗费较大.本文介绍了蓝烟铁路复线路堑爆破中首次采用的新型、安全、高效的近人爆破方法.根据试爆资料确定了近人爆破施工中单位耗药量k″＝0.5 k′(k′为标准松动漏斗单耗)的经验公式,提出了孔口单耗的新概念,以此为依据导出了爆破中孔口间距a、排距b、装药量q等参数计算公式.提出了利用爆破岩体自身设置三角形安全隔离带的方法,并对施工要点做了简要的介绍.
학보기유선행차안전시철로기유선로참탁관폭파시공수선요고필적인소,통상채용적폭파방법수요대량적방호설시,모비교대.본문개소료람연철로복선로참폭파중수차채용적신형、안전、고효적근인폭파방법.근거시폭자료학정료근인폭파시공중단위모약량k″＝0.5 k′(k′위표준송동루두단모)적경험공식,제출료공구단모적신개념,이차위의거도출료폭파중공구간거a、배거b、장약량q등삼수계산공식.제출료이용폭파암체자신설치삼각형안전격리대적방법,병대시공요점주료간요적개소.
For detonating excavation to widen the existing railway line,the first considera t ion is on ensuring the safety of passing trains, and the typical approaches emp loy lots o f protective installation at high cost. A new, safe and effective method is intr oduced, which has been practised on the cutting detonating construction of the Lan-Yan double-track railway line. Based on the data of trial detonation, a pr actical formula k″=0.5k′(where k′is unit explosive quantity of st andard loosen filler) is set to calculate the unit explosive quantity in cl ose-detonation. And a new concept, explosive qua ntity for each hole, is presented to deduce such parameter formulas as hole spac i ng, row spacing and explosive quantity capacity. By employing the detonated rock itself an approach to installing the triangle safety isolation belt is s howed, and the main points of the corresponding construction is briefly intr oduced as well.