东环铁路柿子坪隧道不稳定堆积体综合治理技术研究

Comprehensive Treatment Technology of the Unstable Deposit at Shiziping Tunnel of Chongqing East Central Railway

重庆东环铁路柿子坪隧道进口不稳定边坡为一处松散堆积体,处于欠稳定-不稳定状态,一旦滑动,将严重威胁柿子坪隧道的安全,影响东环铁路施工。在治理不稳定堆积体的过程中,采用堆积体后缘减载、堆积体下部设置抗滑桩、堆积体外侧设置环形截水沟,引排地表水等综合治理措施,有效地增加了堆积体的稳定性。

The unstable slope at Shiziping Tunnel, Chongqing East Central Railway, is a threat to tunnel security and the construction of Chongqing East Central Railway, due to its deficiency in stability. Comprehensive treatment of slope instability includes load shedding at the trailing edge, slide-resistance pile at the bottom, annular intercepting ditch at the outside of the slope, drainage of surface water, etc. , which effectively increase the stability of the deposit.