CN110847142A - Exploration method for geotechnical engineering geophysical prospecting - Google Patents
Exploration method for geotechnical engineering geophysical prospecting Download PDFInfo
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- CN110847142A CN110847142A CN201911183091.6A CN201911183091A CN110847142A CN 110847142 A CN110847142 A CN 110847142A CN 201911183091 A CN201911183091 A CN 201911183091A CN 110847142 A CN110847142 A CN 110847142A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D1/00—Investigation of foundation soil in situ
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V11/00—Prospecting or detecting by methods combining techniques covered by two or more of main groups G01V1/00 - G01V9/00
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- General Physics & Mathematics (AREA)
- Mining & Mineral Resources (AREA)
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Abstract
The invention relates to a prospecting method for geotechnical engineering geophysical prospecting. At present, the engineering geophysical prospecting method is often interfered by environmental factors and limited by the measurement precision of instruments, and the analysis result is rough. A method for surveying the geotechnical engineering features that the micro-or non-excavation technique is used to lay, repair or replace underground pipelines, tubes and underground cables, and only two pipelines are buried in the depth range of the engineering. Therefore, engineering geophysical prospecting is generally an auxiliary method for geotechnical engineering surveys. The invention is applied to the investigation method of geotechnical engineering geophysical prospecting.
Description
The technical field is as follows:
the invention relates to a prospecting method for geotechnical engineering geophysical prospecting.
Background art:
common methods for geotechnical engineering exploration include three types, pit detection, drilling and geophysical exploration. The pit detection is a direct method for engineering investigation, and refers to a exploratory well, an exploratory groove, a vertical well, a horizontal tunnel and the like which are excavated by manpower or machinery. The method is limited by underground water, the excavation depth cannot be too large, the construction difficulty is large, and the construction time is long.
Drilling is a semi-direct method of engineering exploration and is one of the most important means of geotechnical engineering exploration. Compared with the pit exploration and the geophysical exploration, the drilling has irreplaceable effect, and the exploration work under different types, different structures, different scales of buildings and structures, different exploration stages and different environmental conditions generally adopts or partially adopts a drilling method to explore. Drilling and excavation are direct means and reliable methods for understanding deep geological data and ascertaining engineering geological conditions. But the labor and material resources are more, and the time is longer. The geophysical exploration method applied to geotechnical engineering exploration is called engineering geophysical prospecting. The method utilizes a special geophysical exploration instrument and a special geophysical exploration method to explore the engineering geological conditions, the hydrogeological conditions, the geotechnical engineering characteristics, the unfavorable geological phenomena and the dynamic stability of the building site and test the seismic wave velocity of the building site. The engineering geophysical prospecting has the advantages that: the device is portable and high in efficiency, and can carry out geophysical prospecting on the ground, in the air, on the water or in a drilling hole which is a vertical drilling hole, different from the horizontal drilling hole of the invention, the exploration density and depth can be increased according to the research degree and precision and the actual requirement, the exploration line network can be designed from different directions, a multi-azimuth data array is formed, and the device has the characteristic of three-dimensional perspective. However, the engineering geophysical prospecting method is often interfered by environmental factors and limited by the measurement accuracy of instruments, and the analysis result is relatively rough. Therefore, engineering geophysical prospecting is generally an auxiliary method for geotechnical engineering surveys. Engineering geophysical prospecting can be divided into electrical prospecting, seismic prospecting, magnetic prospecting, gravity prospecting, radioactive prospecting, well logging, etc. according to the method of measuring different physical fields of a geologic body.
In summary, the existing geotechnical engineering exploration methods are classified into three types, wherein the pit exploration and the drilling are direct methods, the form is point-shaped exploration, the result is clear, the engineering geophysical exploration is indirect method, the method is limited by the interference of environmental factors and the measurement precision of instruments, and the result is rough. Therefore, due to the technical defects in the prior art, the technical problems to be solved by the technical staff in the field are urgent.
The invention content is as follows:
the invention aims to provide a prospecting method for geotechnical engineering geophysical prospecting.
The above purpose is realized by the following technical scheme:
a surveying method for geotechnical engineering geophysical prospecting comprises the following steps: engineering geophysical prospecting instrument and receiving instrument, the method includes the following steps:
(1) dividing the geotechnical investigation region into a plurality of working sections along the engineering trend;
(2) performing horizontal directional drilling in the detected area of each working section to form two pore canals, wherein the plane formed by the two pore canals is parallel to the ground, a channel is laid on the end surface of the ground, an equilateral triangle is formed after the connection point of the cross sections of the two pore canals and the channel, and pipelines which can be used for an engineering geophysical prospecting instrument and a receiving instrument to pass through along the engineering trend are laid in the formed pore canals;
(3) placing an engineering geophysical prospecting instrument in one pipeline, placing a receiving instrument in the other pipeline, and moving the engineering geophysical prospecting instrument and the receiving instrument from the same end of the pipeline to the other end of the pipeline, so as to detect and acquire geotechnical investigation data of each area;
(4) after the engineering geophysical prospecting instrument is used for performing geotechnical prospecting in the pipeline in the detected area, replacing the geophysical prospecting instruments and the receiving instruments with other working principles, and repeating the step (3) to detect and acquire geotechnical prospecting data in the area, wherein the geophysical prospecting instruments can be electric prospecting instruments, seismic prospecting instruments, magnetic prospecting instruments, gravity prospecting instruments, radioactive prospecting instruments and the like;
(5) exchanging the engineering geophysical prospecting instrument and the receiving instrument into different pipelines, measuring multiple groups of data, and collecting and calculating;
(6) and (3) after completing the geotechnical investigation of the engineering geophysical prospecting instrument in the pipeline in the detected area, replacing the geophysical prospecting instrument and the receiving instrument with other working principles, and repeating the step 3) to detect and acquire the geotechnical investigation data in the area.
The invention has the beneficial effects that:
1. the invention integrates the existing mature non-excavation technology, namely the technology of laying, repairing or replacing underground pipelines, pipelines and underground cables by using micro-excavation or non-excavation technology, only two pipelines along the engineering trend are buried in the depth range of the built engineering, a channel is arranged above the ground, geophysical prospecting is carried out in the pipelines by a geophysical prospecting instrument, and the property of the engineering construction site soil and underground obstacles are determined.
The method has the advantages of simple steps, high investigation accuracy and high working efficiency, solves the problems that the existing pit detection and drilling mode can only be suitable for point-like engineering and the analysis result of the engineering geophysical prospecting method is too rough, realizes the accurate investigation of the geotechnical engineering of the line-like engineering, and particularly has wide application prospect in the engineering construction of pipelines, subways, tunnels and the like.
The specific implementation mode is as follows:
example 1:
a surveying method for geotechnical engineering geophysical prospecting comprises the following steps: engineering geophysical prospecting instrument and receiving instrument, the method includes the following steps:
(1) dividing the geotechnical investigation region into a plurality of working sections along the engineering trend;
(2) performing horizontal directional drilling in the detected area of each working section to form two pore canals, wherein the plane formed by the two pore canals is parallel to the ground, a channel is laid on the end surface of the ground, an equilateral triangle is formed after the connection point of the cross sections of the two pore canals and the channel, and pipelines which can be used for an engineering geophysical prospecting instrument and a receiving instrument to pass through along the engineering trend are laid in the formed pore canals;
(3) placing an engineering geophysical prospecting instrument in one pipeline, placing a receiving instrument in the other pipeline, and moving the engineering geophysical prospecting instrument and the receiving instrument from the same end of the pipeline to the other end of the pipeline, so as to detect and acquire geotechnical investigation data of each area;
(4) after the engineering geophysical prospecting instrument is used for performing geotechnical prospecting in the pipeline in the detected area, replacing the geophysical prospecting instruments and the receiving instruments with other working principles, and repeating the step (3) to detect and acquire geotechnical prospecting data in the area, wherein the geophysical prospecting instruments can be electric prospecting instruments, seismic prospecting instruments, magnetic prospecting instruments, gravity prospecting instruments, radioactive prospecting instruments and the like;
(5) exchanging the engineering geophysical prospecting instrument and the receiving instrument into different pipelines, measuring multiple groups of data, and collecting and calculating;
(6) and (3) after completing the geotechnical investigation of the engineering geophysical prospecting instrument in the pipeline in the detected area, replacing the geophysical prospecting instrument and the receiving instrument with other working principles, and repeating the step 3) to detect and acquire the geotechnical investigation data in the area.
Example 2:
the invention integrates the existing mature non-excavation technology, namely the technology of laying, repairing or replacing underground pipelines, pipelines and underground cables by using micro-excavation or non-excavation technology, only two pipelines along the engineering trend are buried in the depth range of the built engineering, a channel is arranged above the ground, geophysical prospecting is carried out in the pipelines by a geophysical prospecting instrument, and the property of the engineering construction site soil and underground obstacles are determined. The method has the advantages of simple steps, high investigation accuracy and high working efficiency, solves the problems that the existing pit detection and drilling mode can only be suitable for point-like engineering and the analysis result of the engineering geophysical prospecting method is too rough, realizes the accurate investigation of the geotechnical engineering of the line-like engineering, and particularly has wide application prospect in the engineering construction of pipelines, subways, tunnels and the like.
Claims (1)
1. A surveying method for geotechnical engineering geophysical prospecting comprises the following steps: engineering geophysical prospecting appearance and receiving appearance, characterized by: the method comprises the following steps:
(1) dividing the geotechnical investigation region into a group of working sections along the engineering trend;
(2) performing horizontal directional drilling in the detected area of each working section to form two pore canals, wherein the plane formed by the two pore canals is parallel to the ground, a channel is laid on the end surface of the ground, an equilateral triangle is formed after the connection point of the cross sections of the two pore canals and the channel, and pipelines which can be used for an engineering geophysical prospecting instrument and a receiving instrument to pass through along the engineering trend are laid in the formed pore canals;
(3) placing an engineering geophysical prospecting instrument in one pipeline, placing a receiving instrument in the other pipeline, and moving the engineering geophysical prospecting instrument and the receiving instrument from the same end of the pipeline to the other end of the pipeline, so as to detect and acquire geotechnical investigation data of each area;
(4) after the engineering geophysical prospecting instrument is used for performing geotechnical prospecting in the pipeline in the detected area, replacing the geophysical prospecting instruments and the receiving instruments with other working principles, and repeating the step (3) to detect and acquire geotechnical prospecting data in the area, wherein the geophysical prospecting instruments can be electric prospecting instruments, seismic prospecting instruments, magnetic prospecting instruments, gravity prospecting instruments, radioactive prospecting instruments and the like;
(5) exchanging the engineering geophysical prospecting instrument and the receiving instrument into different pipelines, measuring multiple groups of data, and collecting and calculating;
(6) and (3) after completing the geotechnical investigation of the engineering geophysical prospecting instrument in the pipeline in the detected area, replacing the geophysical prospecting instrument and the receiving instrument with other working principles, and repeating the step 3) to detect and acquire the geotechnical investigation data in the area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911183091.6A CN110847142A (en) | 2019-11-27 | 2019-11-27 | Exploration method for geotechnical engineering geophysical prospecting |
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| CN201911183091.6A CN110847142A (en) | 2019-11-27 | 2019-11-27 | Exploration method for geotechnical engineering geophysical prospecting |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02176011A (en) * | 1988-12-28 | 1990-07-09 | Hazama Gumi Ltd | Method of evaluating ground properties |
| CN106896412A (en) * | 2015-12-20 | 2017-06-27 | 天津华北工程勘察设计有限公司 | A kind of geotechnical engineering investigation method of wire engineering |
-
2019
- 2019-11-27 CN CN201911183091.6A patent/CN110847142A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02176011A (en) * | 1988-12-28 | 1990-07-09 | Hazama Gumi Ltd | Method of evaluating ground properties |
| CN106896412A (en) * | 2015-12-20 | 2017-06-27 | 天津华北工程勘察设计有限公司 | A kind of geotechnical engineering investigation method of wire engineering |
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