Ground deformation air bag simulation method

A simulation method and airbag technology, applied in the direction of mechanical solid deformation measurement, measurement device, instrument, etc., can solve the problems of poor controllability and repeatability, and achieve the effect of strong repeatability and effective monitoring of data

Inactive Publication Date: 2014-02-12
NANJING UNIV +3
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Purpose of the invention: In order to overcome the deficiencies in the problems of poor controllability and repeatability in existing ground deformation simulation tests, the present invention provides a ground deformation simulation method,

Method used

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Embodiment Construction

[0017] The present invention will be further described below in conjunction with the accompanying drawings.

[0018] as attached figure 1 As shown, the method includes the following steps:

[0019] 1) Laying the cushion layer: Lay the backfill soil material cushion layer at the bottom of the manually excavated trench 1, and level the surface of the cushion layer; wherein, the backfill soil material is composed of sand, kaolin and water;

[0020] 2) Place the airbags: place a number of saturated airbags on the laid cushion, and fill the airbags with sand and earth until only the top of the airbags is exposed; each airbag is installed with an air pressure control device and the airbags are cataloged to facilitate the data in the test Analysis; the airbag 3 is a rubber airbag that can be manually inflated and deflated; the air pressure control device is an inflation conduit and an air switch; figure 2 As shown, the number of airbags should be based on filling the artificial ta...

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Abstract

The invention discloses a ground deformation air bag simulation method. According to the method, a tank is formed manually or an indoor model tank is built, the tank is filled with backfill soil samples in a layered mode according to the design requirements, one or more saturated air bags are buried in the set position in the tank, and related ground deformation monitoring instruments are buried in the backfilling process; after backfilling, air pressure in the air bags is reduced at a certain speed by controlling switches, the soil around the position where the air bags are located loses the pressure and sinks, uneven settlement is formed, ground deformation such as ground settlement, ground fracture and ground collapse is produced, and therefore the whole generation and development process of the ground deformation is simulated, and the locating precision and length for monitoring the generation and development of the ground deformation through the adopted monitoring method in the ground deformation process are verified. The simple and feasible method is provided for simulation of the ground deformation such as ground settlement, ground fracture and ground collapse.

Description

technical field [0001] The invention relates to a ground deformation simulation method, in particular to a ground deformation airbag simulation method. Background technique [0002] In recent years, geological disasters caused by ground deformation, such as ground subsidence, ground fissures, and ground subsidence, have become increasingly serious. According to incomplete statistics, in the early 1990s, the land subsidence area in 16 provinces (autonomous regions and municipalities) including Tianjin, Shanghai, Jiangsu, Beijing, Zhejiang, and Hebei was about 48,700 km2, and by 2003 it was about 94,000 km2. In December 2009, more than 50 cities in China experienced land subsidence. Land subsidence areas are often associated with ground fissures, so the ground fissures will be relatively serious in areas with serious land subsidence. There are large ground fissures in more than 200 counties and cities in 12 provinces, cities and districts across the country. According to st...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B5/30G01B11/16
Inventor 施斌魏广庆卢毅童恒金宋占璞姜月华苏晶文孙义杰张弛刘瑾
Owner NANJING UNIV
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