CN-122017196-A - Swelling engineering characteristic test system and method for swelling soil, electronic equipment and medium

CN122017196ACN 122017196 ACN122017196 ACN 122017196ACN-122017196-A

Abstract

The application provides an expansion engineering characteristic testing system, method, electronic equipment and medium of expansion soil, wherein the system comprises a sleeve device, a datum point device and a water injection device, wherein the sleeve device with the size corresponding to the type of the expansion soil is installed at each basic test point on a slope surface where the expansion soil is located, the datum point device is vertically installed at the datum point, the expansion engineering characteristic difference value between adjacent basic test points is smaller than or equal to a preset expansion engineering characteristic difference value threshold value, when the basic test points are tested, the water injection device is connected with the sleeve device installed by the water injection device to inject water into the expansion soil, and the expansion engineering characteristic is determined according to the pre-water injection height difference and the post-water injection height difference between the top center of the basic test points and the top center of the corresponding datum point. According to the application, the expansion engineering characteristic test can be carried out on the expansion soil in situ, the original structure and the real stress state of the soil body are maintained, the test result is accurate and reliable, and the space variability of the soil body is reflected.

Inventors

LI TAO
QIU JINWEI
SUN HUI
SUN WANLIN
HUANG MINGMING
CHENG YONGHUI
GONG BIN
WANG LEI
HU BO
GU JIAN
HU HONGWEI

Assignees

安徽省水利水电勘测设计研究总院股份有限公司
长江水利委员会长江科学院
安徽省引江济淮工程有限责任公司

Dates

Publication Date: 20260512
Application Date: 20260213

Claims (10)

1. The system for testing the expansion engineering characteristics of the expansive soil is characterized by comprising a casing device, a datum point device, a water injection device and a testing module; Installing a sleeve device with a size corresponding to the type of the expansive soil at each basic test point on the slope surface where the expansive soil is positioned, vertically installing a datum point device at each datum point corresponding to each basic test point, wherein the difference value of the expansion engineering characteristics between adjacent basic test points is less than or equal to a preset expansion engineering characteristic difference value threshold value; When any basic test point is subjected to expansion engineering characteristic test, the water injection device is connected with a sleeve device arranged at the basic test point so as to inject water into the expansion soil at the basic test point; the test module is used for determining the vertical expansion deformation of the basic test point according to the water injection front high-rise difference and the water injection rear high-rise difference between the top center of the expansive soil at the basic test point and the top center of the expansive soil at each corresponding datum point; and the test module is also used for determining the vertical expansion deformation of all basic test points as the expansion engineering characteristics of the expansive soil.
2. The swelling engineering property testing system of swelling soil according to claim 1, further comprising a heating rod; Before the expansion engineering characteristics of the basic test points are tested, a plurality of heating rods are inserted into the expansion soil at the basic test points to heat the expansion soil, so that the water content of the expansion soil is reduced to a limit water content, wherein the limit water content refers to the limit water content that the volume is not shrunk when the water content is continuously reduced when the expansion soil is continuously heated.
3. The system for testing the expansion engineering characteristics of the expansive soil according to claim 1, wherein the datum point device is formed by overlapping a plurality of stainless steel pipe sections, fine threads are arranged at two ends of each stainless steel pipe section, and the fine threads of adjacent stainless steel pipe sections are overlapped through screwing.
4. The swelling engineering property testing system of swelling soil of claim 3, further comprising a guide sleeve and a hammer; And at the datum point, the datum point device is vertically driven into a target soil layer at the datum point through the guide sleeve and the hammer, wherein the target soil layer is a soil layer with the deformation degree smaller than a preset deformation degree threshold value in the expansion engineering characteristic test process.
5. The swelling engineering property testing system of swelling soil according to claim 1, wherein the water injection device comprises a water supply device and a porous water injection needle tube, wherein the water supply device is connected with the porous water injection needle tube; the water supply equipment is used for injecting water into the porous water injection needle tube; The porous water injection needle tube is used for injecting water to the expansive soil at the basic test point through the sleeve device.
6. The swelling engineering property testing system of swelling soil of claim 2, wherein the system further comprises an electronic level; The electronic level is used for measuring the water injection front high-rise difference between the top center of the expansive soil at the basic test point and the top center of the expansive soil at each corresponding datum point before heating the expansive soil; the electronic level is also used for measuring the post-water-injection high-rise difference between the top center of the expansive soil at the basic test point and the top center of the expansive soil at each corresponding datum point.
7. The swelling engineering property testing system of swelling soil according to claim 6, wherein the testing module is specifically configured to: For each datum point, calculating a difference value between a pre-water injection high-rise difference and a post-water injection high-rise difference between the top center of the expansive soil at the basic test point and the top center of the expansive soil at the corresponding datum point, and obtaining the vertical expansion deformation of the basic test point under the datum point; And determining the vertical expansion deformation of the basic test points according to the vertical expansion deformation of all the basic test points under all the reference points.
8. A method for testing the expansion engineering characteristics of the expansive soil, which is characterized in that the method is applied to a test module in the expansion engineering characteristics testing system of the expansive soil according to claim 1; Acquiring a water injection front high-rise difference and a water injection rear high-rise difference between the top center of the expansive soil at the basic test point and the top center of the expansive soil at each corresponding datum point; determining the vertical expansion deformation of the basic test point according to the pre-water injection high-rise difference and the post-water injection high-rise difference between the top center of the expansive soil at the basic test point and the top center of the expansive soil at each corresponding reference point; And determining the vertical expansion deformation of all basic test points as the expansion engineering characteristics of the expansive soil.
9. An electronic device comprising a processor, a storage medium and a bus, the storage medium storing machine-readable instructions executable by the processor, the processor in communication with the storage medium via the bus when the electronic device is in operation, the processor executing the machine-readable instructions to perform the steps of the expansive soil expansion engineering property testing method of claim 8.
10. A computer-readable storage medium, wherein a computer program is stored on the computer-readable storage medium, which when executed by a processor performs the steps of the swelling engineering property testing method of a swelling soil according to claim 8.

Description

Swelling engineering characteristic test system and method for swelling soil, electronic equipment and medium Technical Field The invention relates to the technical field of geotechnical engineering investigation, in particular to an expansive engineering characteristic test system and method of expansive soil, electronic equipment and a medium. Background The expansive soil (rock) is cohesive soil or soft rock rich in hydrophilic minerals such as montmorillonite, illite and the like, has the characteristic of water expansion, water loss shrinkage and cracking, and is a main cause for inducing engineering problems such as slope instability, roadbed deformation, building cracking and the like. The current engineering judgment mainly depends on an indoor free expansion rate test, and the volume expansion rate is measured after sampling, drying, grinding and sieving, and the expansion grade is divided. The method has obvious defects that firstly, the original structure and the cementing state of the soil body are damaged, secondly, in-situ stress and constraint conditions cannot be restored, the result is distorted, thirdly, sampling representativeness is insufficient, the space variability of the soil body is difficult to reflect, and thirdly, design bias conservation or judgment misalignment influences engineering safety and economy. Disclosure of Invention In view of the above, the application aims to provide a system, a method, electronic equipment and a medium for testing the expansion engineering characteristics of the expansion soil, which can test the expansion engineering characteristics of the expansion soil in situ, maintain the original structure and the true stress state of the soil, have accurate and reliable test results, reflect the space variability of the soil, provide accurate parameters for engineering design and improve the safety and economy. In a first aspect, an embodiment of the present application provides an expansion engineering property test system for expanded soil, the system including a casing device, a reference point device, a water injection device, and a test module; Installing a sleeve device with a size corresponding to the type of the expansive soil at each basic test point on the slope surface where the expansive soil is located, vertically installing a datum point device at each datum point corresponding to each basic test point, and expanding engineering features between adjacent basic test points The difference value of the performance is smaller than or equal to a preset expansion engineering characteristic difference value threshold value, and all datum points corresponding to each basic test point are centered on the corresponding basic test point; When any basic test point is subjected to expansion engineering characteristic test, the water injection device is connected with a sleeve device arranged at the basic test point so as to inject water into the expansion soil at the basic test point; the test module is used for determining the vertical expansion deformation of the basic test point according to the water injection front high-rise difference and the water injection rear high-rise difference between the top center of the expansive soil at the basic test point and the top center of the expansive soil at each corresponding datum point; and the test module is also used for determining the vertical expansion deformation of all basic test points as the expansion engineering characteristics of the expansive soil. In an embodiment of the application, the system further comprises a heating rod; Before the expansion engineering characteristics of the basic test points are tested, a plurality of heating rods are inserted into the expansion soil at the basic test points to heat the expansion soil, so that the water content of the expansion soil is reduced to a limit water content, wherein the limit water content refers to the limit water content that the volume is not shrunk when the water content is continuously reduced when the expansion soil is continuously heated. In the embodiment of the application, the datum point device is formed by overlapping a plurality of stainless steel pipe sections, fine threads are arranged at two ends of each stainless steel pipe section, and the fine threads of adjacent stainless steel pipe sections are overlapped through screwed connection. In an embodiment of the application, the system further comprises a guide sleeve and a hammer; And at the datum point, the datum point device is vertically driven into a target soil layer at the datum point through the guide sleeve and the hammer, wherein the target soil layer is a soil layer with the deformation degree smaller than a preset deformation degree threshold value in the expansion engineering characteristic test process. In the embodiment of the application, the water injection device comprises water supply equipment and a porous water injection needle tube, wherein the water supply eq