roof ripping

Talking about the left road processing with roof ripping and unloading pressure;

浅谈挑顶卸压法留巷工艺

Application of CD method in the inclined shaft ripping construction of Guanyintang tunnel;

CD法在观音堂隧道斜井挑顶施工中的应用

This paper introduces the transitional measures for the transformation of the construction from the loess transverse 6~# tube into the main tunnel, and expounds the steel frame turning construction of transverse tube, the setting up of the gantry at the junction between the transverse tube and the main tunnel, and the ripping construction of the main tunnel.

介绍了黄土隧道横洞进入正洞施工的过渡措施,着重对横洞钢架转向施工、横洞与正洞交界处门架的设置、正洞挑顶施工进行了详细的阐述。

3 auxiliary incline shaft of Nanliang Tuunel on Shijiazhuang-Taiyuan Special Passenger Railway Line as the example,this paper introduces the construction method adopted in the hard wall-rock for rapidly finishing the ripping construction,guaranteeing the effective control of the over-excavation and less-excavation,and rapidly forming the two-way work capacity in the main tunnel.

以石太客运专线南梁隧道3#斜井施工为例,介绍了在硬质围岩施工中快速完成挑顶施工,确保有效控制超欠挖,快速形成主洞双向作业能力的施工方法。

Taking the cross cave propping in Hanguguan Tunnel of passengers special line on Zhengxi railway,this paper introduces a new construction technique of propping- vertical propping method.

文章以郑西铁路客运专线函谷关隧道横洞挑顶为例,介绍了一种新型挑顶施工工艺——垂直挑顶法。