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Method for detecting tunnel bottom base multi-layer karst cave

A detection method and basic technology, applied in the field of building construction, can solve problems such as difficult to grasp, and achieve the effect of reducing effective time, simple operation and strong practicability

Pending Publication Date: 2018-05-29
CHINA RAILWAY CONSTR BRIDGE ENG BUREAU GRP
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Problems solved by technology

[0004] As far as the current use of detection technologies at home and abroad is concerned, there are limitations, and each has its own advantages and disadvantages. Especially, due to the development of geological structures and the emergence of karst stratification in the southwest karst mountainous area, it is often difficult to grasp the situation by a single prediction method. of

Method used

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Embodiment Construction

[0020] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0021] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", The orientation or positional relationship indicated by "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown, and is only for the convenience of describing the invention and Simplified descriptions, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed as limiting the invention. In addition, the terms "first", "second", etc. are used for descriptive purposes only, and should not be understood as indicating or implying re...

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Abstract

The present invention provides a method for detecting a tunnel bottom base multi-layer karst cave. According to the method, firstly a geological analysis method is used to analyze geomorphology, and with foundation excavation, an infrared ray temperature detection method and a geological drilling detection method are used to determine the natures of strata rocks and lithologic distribution and aninterface; the subsequent geological radar detection and positions of survey lines and survey points of an acoustic reflection method; after the completion of the above foundation trench excavation, the survey lines and survey points are demarcated, and a geological radar detection method is used to carry out linear scan of the geological radar; and finally a sound wave reflection method test is carried out. The detection method provided by the invention is a reasonable and effective combination of multiple detection methods, the combination of qualitative judgment and quantitative judgment isadopted, and a condition that a large number of field implementation processes occupies the effective time of construction is reduced. Used radar detection equipment is highly practical and is easy and convenient to operate.

Description

technical field [0001] The invention belongs to the technical field of building construction, and in particular relates to a detection method for multi-layer karst caves at the bottom of a tunnel. Background technique [0002] Foundation engineering is an important part of construction engineering, and the quality of foundation engineering is directly related to the structural safety of the entire building. The foundation foundation at the bottom of the tunnel is one of the main foundation forms. Because the construction of piles is highly concealed, the design, construction, and quality inspection of the foundation engineering at the bottom of the tunnel are often more complicated than the upper building structure, and there are more potential quality hazards . The quality problems of the foundation works at the bottom of the tunnel will directly endanger the normal use and safety of the main structure. [0003] If there are karst caves and faults within the pile crossing...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V11/00
CPCG01V11/00
Inventor 赵国祝宋伟俊张行道宋战平韩伟辉李晓林鲍猛王海峰王将李博文刘威高国梁谢波
Owner CHINA RAILWAY CONSTR BRIDGE ENG BUREAU GRP
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