Geological advanced prediction method suitable for TBM construction

A geological advanced forecasting and working face technology, applied in seismology, geophysical measurement, measuring devices, etc., can solve the problems of complex installation of testing equipment, unsatisfactory forecasting results, interference of electrical testing, etc., to achieve on-site data collection and Rapid analysis, high accuracy, and good forecasting accuracy

Active Publication Date: 2008-09-10
中铁西南科学研究院有限公司
View PDF0 Cites 31 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this method is that the installation of the test equipment is complicated, the AC signal needs to be artificially stimulated, the TBM is also required to be shut down during the test, and the test time is long, which seriously affects the construction progress; High-voltage cables have serious interference effects on electrical testing
In addition, judging from the application of this method in several major long tunnels in my country, the prediction results are not ideal

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Geological advanced prediction method suitable for TBM construction
  • Geological advanced prediction method suitable for TBM construction

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] This embodiment takes the test of the 26+054 working face of the TBM1 bid section in the water delivery tunnel of the Dahuofang Reservoir as an example. The scope of this forecast: 100 meters in front of the 26+054 working face (corresponding to the mileage 26+054~26+154).

[0022] see figure 1 , figure 2 .

[0023] (1), a synchronous signal detector 1 for synchronously receiving the acoustic wave signal excited by the TBM cutter cutting rock is installed inside the cutter head 3 of the TBM, and installed in the side arch waist surrounding rock 4 located at the rear of the TBM working face A signal detector 2 is used to receive the reflected wave signal transmitted from the front of the TBM working face through the rock mass. The specific position of the detector 2 is based on the ability to receive effective reflected wave signals, and there is no strict distance limit. Geophone 1 and geophone 2 are commercially available conventional geophones with a model of 50-1...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to a geologic forecast method which is suitable for TBM construction, belonging to the technical filed of geologic forecast; the method comprises the following steps: (1) the interior of a TBM cutter head is provided with a synchronous signal detector used for synchronously receiving signals aroused by rock-cutting of the TBM cutter head, and a reflected wave signal detector used for receiving the reflected wave signals transmitted from the front of a TBM working surface through rock mass is arranged inside a tunnel wall rock at the back of the TBM working surface; (2) the received signals received by the two detectors are transmitted to an HSP sonic apparatus, the HSP sonic apparatus processes and analyzes the received signals and gives a geologic forecast result. The method has the advantages of synchronous process of the measurement operation and TBM operation, good suitability to TBM tunnel construction and high forecast accuracy.

Description

technical field [0001] The invention relates to the technical field of geological advance prediction. In particular, it relates to a geological advance prediction method suitable for TBM construction. Background technique [0002] In tunnel excavation operations, TBM construction and drill and blast method are usually used for construction. Compared with the drilling and blasting method, TBM construction is mainly characterized by high degree of mechanization and fast speed, but poor adaptability to changes in geological conditions. In order to ensure construction safety, TBM construction requires more advanced geological prediction technology than drilling and blasting method construction. Tunnel requirements are more stringent and urgent. [0003] As far as geological advance prediction technology is concerned, there are many geological prediction methods for drilling and blasting tunnels. Among them, the "HSP horizontal acoustic profile method" (see "Comprehensive Tech...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G01V1/00
Inventor 李苍松丁建芳谷婷
Owner 中铁西南科学研究院有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap