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Horizontal soft and hard interbeded layer surrounding rock tunnel anchor rod support structure and method

A tunnel anchor and horizontal technology, which is applied in the installation of bolts, earthwork drilling, mining equipment, etc., can solve the problems of increasing support material consumption, support cost, waste of bolt support quantity, etc., and achieve good reinforcement effect, The effect of saving the number of bolt supports and reducing the consumption of support materials

Inactive Publication Date: 2016-11-16
中电建路桥集团有限公司
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0004] Aiming at the technical problem of the prior art that the amount of bolt support in tunnel construction is greatly wasted, thereby increasing support material consumption and support cost, the present invention provides a horizontal soft-hard interbedded surrounding rock tunnel Bolt support structure and method

Method used

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  • Horizontal soft and hard interbeded layer surrounding rock tunnel anchor rod support structure and method

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Embodiment Construction

[0030] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific illustrations.

[0031] In describing the present invention, it is to be understood that the terms "longitudinal", "radial", "length", "width", "thickness", "upper", "lower", "front", "rear", The orientation or positional relationship indicated by "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings , is only for the convenience of describing the present invention and simplifying the description, but does not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. In the description of the present inventi...

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Abstract

The invention provides a bolt support structure for a horizontal soft-hard interbedded surrounding rock tunnel, which includes a bolt supporting the surrounding rock. The surrounding rock divides the excavation surface into a left half section and a right half according to the center line of the tunnel excavation section. The cross-section, the left half-section and the right half-section are equipped with bolts for supporting the horizontal soft-hard interbedded surrounding rock, and the bolts are arranged perpendicular to the tunnel excavation contour line, and the angle between the horizontal rock formation and the horizontal rock formation is less than 35° There are no bolts arranged on the tunnel excavation outline. The invention also provides a bolt support method for horizontal soft and hard interbedded surrounding rock tunnels. In the bolt support structure and method provided by the present invention, the bolts arranged on the tunnel excavation contour line with an included angle of less than 35° with the horizontal rock formation are canceled, that is, when the tunnel excavation with an included angle with the horizontal rock formation is less than 35° No bolts are arranged on the excavation contour, thus reducing the number of bolts supported in the tunnel construction, not only can obtain a good reinforcement effect, but also save the number of bolts supported, thereby reducing the consumption of supporting materials and supporting costs .

Description

technical field [0001] The invention relates to the technical field of tunnel engineering, in particular to a bolt support structure and method for a horizontal soft-hard interbedded surrounding rock tunnel. Background technique [0002] In the process of tunnel construction, most of the current construction design schemes for tunnels with horizontal layered soft and hard interbedded surrounding rocks ignore the influence of the mesoscopic structure in the rock strata, so it is impossible to take a reasonable support optimization method in a targeted manner. Therefore, for a long time, there has not been a definite and reasonable plan for the bolt support of horizontal soft-hard interbedded surrounding rock tunnels. On the other hand, in the process of tunnel support, the current support method is relatively subjective, and the on-site support measures are completely based on empirical values, which makes the reinforcement capacity of the bolt and the self-supporting capacit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D20/00
CPCE21D20/00
Inventor 韩冬卿陈钒乔钢陈治炜常剑钊孙晓冬任松欧阳汛
Owner 中电建路桥集团有限公司
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