Construction method and system for shield tunneling advanced detection in marine stratum

A technology of advanced detection and construction methods, which is applied in earth-moving drilling, mining equipment, tunnels, etc., can solve the problems of complex preparation procedures, large deviations, and long time-consuming, so as to achieve complex and improved preparation procedures, solve large deviations, and avoid preparation procedures. Effect

Active Publication Date: 2017-04-19
SHANGHAI TUNNEL ENG CO LTD +1
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Problems solved by technology

[0007] The purpose of the present invention is to overcome the defects of the prior art, provide a construction method and system for advanced detection of shield tunneling in marine strata, and solve

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  • Construction method and system for shield tunneling advanced detection in marine stratum

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[0045] The present invention will be further described below in conjunction with the drawings and specific embodiments.

[0046] The invention provides a construction method and system for advanced detection of shield tunneling in marine strata, and provides a new technical reference for shield tunnel construction in marine composite strata. The advanced detection construction method and system of the present invention can generate seismic wave signals by using specially coded sound transmission signals, so that the transmission of seismic wave signals has strong controllability, and the transmission frequency can be set according to actual needs, thereby improving prediction The precision avoids the preparation process of drilling and blasting, and the transmission of the seismic wave signal of the present invention is simpler than that of drilling and blasting, and the complicated preparation process is omitted. By setting the appropriate seismic wave signal transmission freque...

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Abstract

The invention relates to a construction method and system for shield tunneling advanced detection in a marine stratum. The construction method comprises the steps that a seismic wave emitter is arranged on a cutterhead of a shield machine; a plurality of seismic wave receivers are arranged on the cutterhead; according to a seismic wave, a corresponding special coding sound transmission signal is formed, so that the seismic wave emitter emits a seismic wave signal to the front of the shield machine according to the special coding sound transmission signal. The seismic wave receivers receive the reflected seismic wave signal, record and analyze detection data so as to obtain geological conditions of the stratum in front of the shield machine. The seismic wave emitter installed on the cutterhead of the shield machine is used for emitting the seismic wave signal to the front of a chapelet face. The seismic wave emitter generates seismic elastic waves through the special coding sound transmission signal, the preparation procedure of drilling and blasting in TSP technology is avoided, the emission frequency of the seismic wave signal can be controlled, prediction accuracy of the geological condition can be improved, and control is simple, convenient and feasible.

Description

technical field [0001] The invention relates to the field of tunnel shielding, in particular to a construction method and system for advanced detection of shield tunneling in marine strata. Background technique [0002] In recent years, domestic urban rail transit has developed extremely rapidly. By 2015, my country will have 158 rail transit lines built and under construction, with a total mileage of more than 4,189 kilometers. The shield method construction technology has the characteristics of high degree of mechanized construction, high excavation efficiency, and small impact on the environment, and has been widely used in the construction of urban rail transit in my country. [0003] Modern tunnel construction projects increasingly encounter complex stratum problems. The existing shield construction method is suitable for construction in relatively simple soft soil stratum, soft rock stratum and sand stratum. During the tunnel construction process, the adverse geologic...

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Application Information

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IPC IPC(8): E21D9/00E21D9/08
CPCE21D9/003E21D9/08
Inventor 吴惠明曹金文刘宽范杰吕锦黄德中楚兴华何人张亮王旋东李磊
Owner SHANGHAI TUNNEL ENG CO LTD
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