Testing device and method for foundation instability of transmission tower under karst soil cave development condition
A technology of transmission tower and test device, which is applied in the test of basic structure, measurement device, and basic structure engineering, etc., can solve the problems of instability of the foundation of transmission tower and unclear stability interaction mechanism, so as to save expenses and shorten the test. Time required, effect of accelerated growth rate
Active Publication Date: 2022-03-22
ECONOMIC & TECH RES INST OF HUBEI ELECTRIC POWER COMPANY SGCC +1
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[0004] The purpose of the present invention is to overcome the defects and problems in the prior art that the interaction mechanism between the development of karst soil caves and the stability of transmission tower foundations is unclear, and provide a test device for the instability of transmission tower foundations under the condition of karst soil cave development and method
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[0052] see Figure 1 to Figure 4 , a test device for the instability of the transmission tower foundation under the condition of karst soil cave development, including a protection box 1 and a test model set inside it, the protection box 1 is a cuboid structure, and the upper end of the protection box 1 is open (other surfaces are all sealed ), the manufacturing material of the protection box 1 is tempered glass, the thickness of the protection box 1 is 10-20cm, the test model includes the transmission tower foundation, the soil body 2 and the displacement sensor 3, and the soil body 2 is a cuboid structure, The soil body 2 is located in the middle of the protection box 1, the distance between the outer side wall of the soil body 2 and the inner side wall of the protection box 1 is 0.08-0.12m, the upper part of the soil body 2 is provided with a power transmission tower foundation, and the power transmission The tower foundation includes two tension tower foundations 11 and tw...
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Abstract
A test device for power transmission tower foundation instability under karst soil cave development conditions comprises a protection box and a test model arranged in the protection box, the test model comprises a power transmission tower foundation, a soil body and a displacement sensor, the power transmission tower foundation is arranged on the upper portion of the soil body, and the displacement sensor is arranged in the center of the bottom of the power transmission tower foundation. The displacement sensor is connected with the computer through a wire, a karst soil hole is formed in the soil body and located under the transmission tower foundation, scale marks are arranged on the outer side wall of the protection box, and a water passing opening is formed in the lower portion of the outer side wall of the protection box and communicated with water injection and pumping equipment. The design not only has important significance on the stability research of the transmission tower foundation under the karst soil cave development condition and the interaction mechanism of the transmission tower foundation and the karst soil cave development condition, but also has certain guiding significance on erection and operation of the transmission tower in the karst soil cave development area, and is low in test difficulty, low in test cost, high in test accuracy and high in test efficiency.
Description
technical field [0001] The invention relates to the fields of rock-soil mechanics and engineering geology, in particular to a test device and method for foundation instability of transmission towers under the condition of karst soil cave development. Background technique [0002] With the rapid development of electric power construction and the gradual implementation of national networking projects, and in order to reduce the impact of towers on the human living environment, a large number of towers will be built in sparsely populated areas such as mountainous areas. There are a large number of carbonate rock interlayer geological regions in most mountainous areas, and karst soil caves are widely distributed and continue to develop. Because the development of soil caves leads to the instability of towers, the consequence is very huge, which may lead to casualties and property losses. Therefore, it is very important to consider the influence of karst soil caves on the foundat...
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IPC IPC(8): E02D33/00G01N3/02G01N3/36
CPCE02D33/00G01N3/36G01N3/02
Inventor 周英博陈航柯方超周蠡周秋鹏段志强高晓晶陈然熊川羽张哲刘倩杭晶夏鹏李智威王巍张雪霏张赵阳熊一马莉
Owner ECONOMIC & TECH RES INST OF HUBEI ELECTRIC POWER COMPANY SGCC