水压致裂应力测量在铁路隧道设计中的应用

The Application of Hydraulic Fracturing Stress Measurements in the Design of Railway Tunnel

在秦岭1、3、4、5号等4个钻孔中进行的水压致裂应力测量获得了600m以上地层内的主应力值及最大水平主应力方向。通过对所得应力资料的综合分析研究,为铁路设计部门在确定隧道走向及考虑岩爆问题方面提供了有益而可靠的依据。同时也为水压致裂应力测量在地下工程勘探设计中的应用开拓了新的领域。

Hydrofracturing stress measurement was carried out in four boreholes No. 1, No. 3, No. 4 and No. 5 at Qin mountains, the values of principal stress and its orientation up to the depth of 600m were obtained. Through the comprehensive analysis of the in-situ stress data, the useful and reliable base was provided for the railway design (in line selection, rockbursts avoidance etc). It opened up a new area for the use of hydrofracturing stress measurement in the exploration and design works for un derground engineering.