Study on the Influence of Different Control Modes on TBM Disc Cutter Performance by Rotary Cutting Tests

被引:30
|
作者
Peng, Xingxin [1 ,4 ]
Liu, Quansheng [1 ,2 ,3 ]
Pan, Yucong [1 ,2 ,3 ,4 ]
Lei, Guangfeng [1 ,4 ]
Wei, Lai [1 ,4 ]
Luo, Ciyou [1 ,4 ]
机构
[1] Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Hubei, Peoples R China
[2] Wuhan Univ, Key Lab Safety Geotech & Struct Engn Hubei Prov, Wuhan 430072, Hubei, Peoples R China
[3] Wuhan Univ, Sch Civil Engn, Wuhan 430072, Hubei, Peoples R China
[4] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
基金
中国博士后科学基金; 中国国家自然科学基金;
关键词
Tunnel boring machine (TBM); Fixed penetration mode; Fixed normal force mode; Disc cutter performance; Rotary cutting test; ROCK FRAGMENTATION; INDENTATION TESTS; PREDICTION MODEL; CONFINING STRESS; GRANITE; TUNNEL; EXCAVATION;
D O I
10.1007/s00603-017-1368-y
中图分类号
P5 [地质学];
学科分类号
0709 ; 081803 ;
摘要
A full-scale rotary cutting tests using the fixed penetration and the fixed normal force modes were conducted to investigate the rock cutting behaviours and mechanisms under the TBM disc cutter. In both control modes cutting the grout specimen, the normal forces were found to increase with cutter penetration,the rolling forces were found to increase with the penetration in linear function relations,the cutting coefficients were found to increase with the penetration in linear function relations,the specific energies were found to change with the penetration following quadratic function relations, and the rock boreability indices were found to decrease with the penetration in power function relations. At the same penetration, the normal force, rolling force, cutting coefficient, specific energy and rock boreability index in the fixed normal force mode were all found to be lower than the corresponding values in the fixed penetration mode. Thus, it can be concluded that the rock cutting efficiency in the fixed normal force mode is higher than that in the fixed penetration mode when cutting the grout specimen.
引用
收藏
页码:961 / 967
页数:7
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