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A platform for research: civil engineering, architecture and urbanism
Cutting expanding method adjacent to existing railway
The invention provides a cutting expansion method adjacent to an existing railway, which comprises the following steps of: dividing a cutting expansion area positioned at a side slope position of the existing railway into a main blasting area and a reserved protection area along a vertical direction from a direction far away from the existing railway to a direction close to the existing railway according to the excavation width of the cutting expansion area adjacent to the existing railway; blasting excavation is conducted on the main blasting area in a step blasting mode, and after blasting excavation of the main blasting area is completed, a reserved rock wall where the slope surface of the side slope of the existing railway is located is formed in the reserved protection area; and compared with a blasting excavation mode of a main blasting area, the reserved rock wall is excavated in an excavation mode with smaller disturbance. Based on the technical scheme, a blasting excavation mode of the reserved rock wall is adopted, the rock wall is dismantled after the stone far away from the existing railway main body is blasted, the difficulty of blasting construction of the main volume and the harmfulness to the surrounding environment are reduced through the shielding effect of the reserved rock wall, and the construction efficiency is improved. And the safety control points of the whole project are arranged on the treatment surface of the reserved rock wall, so that the construction difficulty is simplified.
本发明提供了一种邻近既有铁路的扩堑方法，包括：根据邻近既有铁路的扩堑区域的开挖宽度，沿垂直且由远离至接近既有铁路的方向将位于既有铁路边坡位置处的扩堑区域划分为主爆破区与预留防护区；采用台阶爆破的方式对主爆破区进行爆破开挖，在主爆破区爆破开挖完成后，在预留防护区形成既有铁路的边坡坡面所在的预留岩墙；相较主爆破区的爆破开挖方式，采用扰动更小的开挖方式对预留岩墙进行开挖。基于本发明的技术方案，采用预留岩墙的爆破开挖方式，将远离既有铁路主体石方爆破完之后再拆除岩墙，利用预留岩墙的屏蔽作用减少主要方量爆破施工时的难度和对周围环境的危害性，而将整个工程的安全控制点放在预留岩墙的处理上面，简化了施工难题。
Cutting expanding method adjacent to existing railway
The invention provides a cutting expansion method adjacent to an existing railway, which comprises the following steps of: dividing a cutting expansion area positioned at a side slope position of the existing railway into a main blasting area and a reserved protection area along a vertical direction from a direction far away from the existing railway to a direction close to the existing railway according to the excavation width of the cutting expansion area adjacent to the existing railway; blasting excavation is conducted on the main blasting area in a step blasting mode, and after blasting excavation of the main blasting area is completed, a reserved rock wall where the slope surface of the side slope of the existing railway is located is formed in the reserved protection area; and compared with a blasting excavation mode of a main blasting area, the reserved rock wall is excavated in an excavation mode with smaller disturbance. Based on the technical scheme, a blasting excavation mode of the reserved rock wall is adopted, the rock wall is dismantled after the stone far away from the existing railway main body is blasted, the difficulty of blasting construction of the main volume and the harmfulness to the surrounding environment are reduced through the shielding effect of the reserved rock wall, and the construction efficiency is improved. And the safety control points of the whole project are arranged on the treatment surface of the reserved rock wall, so that the construction difficulty is simplified.
本发明提供了一种邻近既有铁路的扩堑方法，包括：根据邻近既有铁路的扩堑区域的开挖宽度，沿垂直且由远离至接近既有铁路的方向将位于既有铁路边坡位置处的扩堑区域划分为主爆破区与预留防护区；采用台阶爆破的方式对主爆破区进行爆破开挖，在主爆破区爆破开挖完成后，在预留防护区形成既有铁路的边坡坡面所在的预留岩墙；相较主爆破区的爆破开挖方式，采用扰动更小的开挖方式对预留岩墙进行开挖。基于本发明的技术方案，采用预留岩墙的爆破开挖方式，将远离既有铁路主体石方爆破完之后再拆除岩墙，利用预留岩墙的屏蔽作用减少主要方量爆破施工时的难度和对周围环境的危害性，而将整个工程的安全控制点放在预留岩墙的处理上面，简化了施工难题。
Cutting expanding method adjacent to existing railway
邻近既有铁路的扩堑方法
MENG HAILI (author) / GUO YUNLONG (author) / XUE LI (author) / SUN CUIYUAN (author) / SUN PENGCHANG (author) / LIU YIWEI (author) / YANG NIANHUA (author) / KANG YONGQUAN (author)
2023-05-02
Patent
Electronic Resource
Chinese
IPC:
F42D
Sprengen
,
BLASTING
/
E01F
ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
,
Zusätzliche Baumaßnahmen, wie die Ausstattung von Straßen oder die bauliche Ausbildung von Bahnsteigen, Landeplätzen für Hubschrauber, Wegweisern, Schneezäunen oder dgl.
/
E02D
FOUNDATIONS
,
Gründungen
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