海域復雜地層超大直徑泥水盾構掘進參數分析研究
  • 作者: 王凱,盛永清,王國安,等
論文摘要

海域復雜地層超大直徑泥水盾構掘進參數分析研究*

王凱1,2,盛永清3,王國安2,曾垂剛1,2,張兵1,2,韓偉鋒1,2 

(1.盾構及掘進技術國家重點實驗室,河南 鄭州 450001;2.中鐵隧道局集團有限公司,廣東 廣州 511458;3.武漢地鐵集團有限公司,湖北 武漢 430040)

[摘要]以汕頭蘇埃通道超大直徑泥水盾構應用為背景,結合盾構TBM大數據平臺開展數據分析。依據海瑞克S1046盾構設計特點,提出刀具貫入阻力、泥水阻力、摩擦阻力的計算方法;分析了掘進段刀具貫入阻力、泥水阻力、摩擦阻力變化規律及在總推力中的占比,建立了泥水阻力與盾構埋深的關系、總推力與摩擦阻力的關系;對比了基巖段和軟土段轉速和貫入度特點,分析了兩段掘進中扭矩和貫入阻力的概率密度分布特點,結合基巖段和軟土段TPIFPI顯著的差異性,提出了判別盾構在基巖段和軟土段的方法。研究表明,利用TPIFPI進行地層的識別準確有效,能夠較好指導現場施工。

[關鍵詞]地下工程;隧道;泥水盾構;掘進參數;貫入度

[中圖分類號]U459     [文獻標識碼]A     [文章編號]1002-8498(2021)19-0037-05

Analysis of Parameters About Extra large Diameter Slurry Shield Tunnelling Through Submarine Complex Strata

WANG Kai1,2, SHENG Yongqing3, WANG Guoan2, ZENG Chuigang1,2, ZHANG Bing1,2, HAN Weifeng1,2 

(1.State Key Laboratory of Shield Machine and Boring Technology, Zhengzhou, Henan 450001, China; 2.China Railway Tunnel Group Co., Ltd., Guangzhou, Guangdong 511458; 3.Wuhan Metro Group Co., Ltd., Wuhan, Hubei 430040, China)

Abstract:Based on the application of the extra large slurry shield in Shantou Suai Channel, data analysis is carried out in combination with the big data platform of shield TBM. According to the design characteristics of the shield S1046 produced by Herrenknecht, a calculation method of tool entry resistance, slurry resistance and friction resistance was proposed. The law of tool entry resistance, slurry resistance, friction resistance change and proportion in total thrust was analyzed, and the relationship between slurry resistance and shield depth, the relationship between total thrust and friction resistance was established. By comparing the characteristics of the rotation speed and penetrating rate of the bedrock stratum and soft soil stratum, the probability density distribution characteristics of torque and entry resistance in the two sections of excavation were analyzed. And the method of judging the shield in the bedrock stratum and the soft soil stratum was proposed in accordance with the significant difference of TPI and FPI between the bedrock stratum and the soft soil stratum. Research result shows that the identification of stratum by using TPI and FPI is accurate and effective, and can better guide on site construction.

Keywords:underground engineering;tunnels;slurry shield;driving parameters;penetration

*廣東省重點領域研發計劃資助(2019B111108001);中國中鐵科技開發計劃(2020-重大-04);中鐵隧道局科技創新計劃(隧研合2020-10);河南省科技攻關項目(212102310270,212102310285

[作者簡介]王凱,碩士,工程師,Emailwangkai3188@126.com

 

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