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Engineering rock mass mechanical parameter advance borehole in-situ test device and application method thereof

A technology of rock mechanics and advanced drilling, applied in earthwork drilling, wellbore/well components, construction, etc., can solve the problem of difficulty in ensuring the drilling depth, achieve wide practicability and application value, facilitate access, reduce The effect of financial resources

Inactive Publication Date: 2020-08-11
WUHAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing drilling in-situ test method requires special drilling, and the test is generally performed in the section after TBM excavation. If the mechanical parameters of the rock mass in front of the tunnel face are to be measured, the construction needs to be stopped; and the drilling depth is not easy to guarantee during the test.

Method used

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  • Engineering rock mass mechanical parameter advance borehole in-situ test device and application method thereof
  • Engineering rock mass mechanical parameter advance borehole in-situ test device and application method thereof
  • Engineering rock mass mechanical parameter advance borehole in-situ test device and application method thereof

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Embodiment Construction

[0055] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0056] Such as figure 1 As shown, the advanced drilling in-situ test device for mechanical parameters of engineering rock mass of the present invention includes four parts: a penetrating loading system 1 , a TBM advanced drill pipe 2 , a hydraulic loading system 3 and a control system 4 .

[0057] 1. Touch loading system ( figure 2 , Figure 4 )

[0058] The touch loading system includes a base plate 120, a top plate 136, a cone probe 11, a support frame 137, a propulsion frame 129, an oil cylinder 12, a pressure sensor 13, a displacement sensor 14 and a video camera 15; the video camera 15 is arranged below the top plate 136, Used to photograph the surface information of the borehole wall;

[0059] The bottom plate 120 and the t...

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Abstract

The invention discloses an engineering rock mass mechanical parameter advance borehole in-situ test device and an application method thereof. The device comprises a touch control loading system (1), aTBM advanced drill rod (2), a hydraulic loading system (3), and a control system (4), the touch control loading system (1) is mounted in the front end of the TBM advanced drill rod (2), the hydraulicloading system (3) is connected to the touch control loading system (1), the control system (4) is connected with the touch control loading system (1) and the hydraulic loading system (3), the touchcontrol loading system collects pressure and displacement data of a conical probe (11) in the loading process through a pressure sensor (13) and a displacement sensor (14), through a video camera (15), rock mass surface states in the loading process are recorded, the device is light and small, easy to operate, and high in automation degree, a large amount of rock mass mechanical parameters of thefront of a tunnel face can be obtained, a tunnel supporting basis is provided, and tunnel construction safety is ensured.

Description

technical field [0001] The invention belongs to the field of rock mass exploration, in particular to an in-situ testing device for advanced drilling of mechanical parameters of engineering rock mass, in particular to the use of advanced drill rods to assist in obtaining rock mass mechanics in front of a tunnel face during construction of a tunnel boring machine (abbreviated as TBM). Devices and methods for parameters. Background technique [0002] The mechanical properties of rock mass are important factors affecting TBM excavation. Uniaxial compressive strength, rock hardness, wear resistance and rock mass integrity will all affect the efficiency of TBM construction. On the one hand, in the tunnel construction, it is necessary to conveniently measure the accurate mechanical parameters of the surrounding rock, so as to ensure the strength, stiffness and stability of the support; Mechanical parameters, in order to obtain reliable results. [0003] At present, the methods fo...

Claims

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Application Information

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IPC IPC(8): E21B47/002E21B49/00
CPCE21B49/00
Inventor 张晓平谢维强刘泉声杨信美
Owner WUHAN UNIV
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