Anti-slide pile composite structure for unsymmetrical pressure geology of tunnel portal section

• Main Authors: ZHENG SHUAI, LIU HONGYU, GU JINQUAN, DONG QINGBO, CAI JUNHUA, JING WEI, LI YE, ZHANG PENGBIAO, TONG XIANTAO, LUO GUOCHENG, ZHANG GUANGTAO, JIANG ANNAN, NING XIANDA, PENG ZHICHUAN, JIANG XIANGSONG, HU MINGQUAN
• Format: Patent
• Language: Chinese; English
• Published: 19.04.2022
• Subjects: EARTH DRILLING; EMBANKMENTS; EXCAVATIONS; FIXED CONSTRUCTIONS; FOUNDATIONS; GALLERIES; HYDRAULIC ENGINEERING; LARGE UNDERGROUND CHAMBERS; MINING; SHAFTS; SOIL SHIFTING; TUNNELS; UNDERGROUND OR UNDERWATER STRUCTURES

The utility model provides a slide-resistant pile composite structure for unsymmetrical pressure geology of a tunnel portal section. The slide-resistant pile composite structure comprises slide-resistant piles and a retaining wall. The slide-resistant pile penetrates through an earth surface loose soil layer and a strongly-weathered rock stratum and then extends into a hard rock stratum, the pile casing comprises a permeation section, a thin-wall section and a thick-wall section which are sequentially arranged from top to bottom, permeation holes are formed in the casing wall of the permeation section, the length of the permeation section is the same as the thickness of the earth surface loose soil layer, and the length of the thin-wall section is the same as the thickness of the strongly-weathered rock stratum. The length of the thick-wall section is the same as the depth of the slide-resistant pile entering a hard rock stratum; the two ends of the retaining wall are connected with the anti-slide piles, and