A deep-shallow combined geological survey layout method for underground engineering

Abstract

The invention discloses a geological survey layout method for deep and shallow combination of underground engineering, comprising: conducting ground survey, forming a survey area geological background report and a geological survey implementation plan; carrying out surface area geophysical exploration, performing engineering geological division, and generating a survey area engineering geological division map , to delineate the geophysical abnormal zone; carry out conventional vertical drilling on the shallow buried section of the underground project, conduct in-situ testing, and take core samples for testing, analyze and judge the engineering geological conditions of the shallow buried section; pre-design the excavation and support of the underground project; Excavate the shallow buried section of underground engineering, conduct advanced geophysical exploration in the cave before excavation; conduct long-distance horizontal drilling, carry out in-situ pressure water tests and take core samples for testing, and analyze the situation ahead of underground engineering excavation; and advanced geophysical exploration Geological data are compared and support design parameters are dynamically adjusted. The invention conducts precise investigation on the geological conditions of the underground engineering, is suitable for underground caverns with different formation lithologies, and has high construction efficiency.

Description

technical field [0001] The invention relates to the technical field of survey, design and construction of tunnels and underground engineering, in particular to a geological survey layout method for deep and shallow underground engineering. Background technique [0002] In recent years, with the needs of my country's economic development, large-scale underground projects such as railways, highways, municipal tunnels, underground pipe galleries, water conservancy and hydropower tunnels, and underground storage have emerged in large numbers. Uncertainty has a great constraint on engineering construction. The existing geological exploration method is mainly based on conventional surface drilling. This exploration method is more effective for shallow buried sections, but for deep buried sections, it is obviously time-consuming, labor-intensive, and the drilling is often in the range of hundreds of meters. Only one hole is arranged inside, and the survey results are mostly "one-ho...

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Problems solved by technology

In this way, conventional survey methods have invested a lot of money, but the survey data obtained still cannot meet the needs of tunnel engineering construction, which brings great geological risks to the construction process.

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