Testing apparatus used for simulating foundation pit three-dimensional seepage caused by combined effects of separating-lowering-pouring and ground deformation mechanism

A test device and combined action technology, applied in the fields of geotechnical engineering and urban hydrogeology, environmental geology, and geological engineering, can solve the problems of lack of data in simulation experimental equipment and systematic research on mechanism.

CN103487563AInactive Publication Date: 2014-01-01NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2014-01-01
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a testing apparatus used for simulating foundation pit three-dimensional seepage caused by combined effects of separating-lowering-pouring and ground deformation mechanism. The testing apparatus is used for solving a problem of lack of experiment equipment, which is used for simulating foundation pit three-dimensional seepage caused by combined effects of separating-lowering-pouring and ground deformation mechanism, and systematic researches on relating data and mechanism at present. The testing apparatus comprises a model casing, geotextile, permeable steel plates, underground diaphragm walls, a pumping well, a recharge well, measuring devices and data collecting devices. The model casing is divided into a water zone, a soil zone and a foundation pit zone; the measuring devices comprise a flowmeter, a stratum displacement meter, a water manometer, a contact electric displacement meter, a pore water pressure gauge, and the like, and is capable of realizing accurate measurement on flow displacement pressure; and the data collecting devices are connected with the measuring devices. The testing apparatus is capable of realizing researches on the mechanism of pumping depression cone and recharge lifting underground water level three-dimensional seepage effects, and the relationship between ground deformation and groundwater table fluctuation.
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Description

technical field

[0001] The invention relates to the fields of geological engineering, geotechnical engineering, urban hydrogeology and environmental geology, in particular to a test device for simulating the three-dimensional seepage of foundation pits and formation deformation mechanisms under the combined action of isolation-drop-irrigation. Background technique

[0002] At present, there is no relevant test device in the field of research on the three-dimensional seepage law and formation deformation mechanism of foundation pits under the combined action of isolation-dropping-irrigation; The groundwater level in the foundation pit is often lowered below the excavation surface by means of dewatering; sometimes the ground connection wall cannot completely block the hydraulic connection inside and outside the foundation pit. Therefore, as the groundwater level inside the foundation pit decreases, the groundwater level outside the foundation pit is also affected to varying de...

Examples

Embodiment Construction

[0008] The specific implementation manners of the present invention will be described in further detail below in conjunction with the accompanying drawings.

[0009] Depend on figure 1 and figure 2 Given, the present invention includes a model box, the model box 1 is a cylindrical steel structure, and the model box 1 is sequentially distributed inwardly with the first permeable steel plate 2, the second permeable steel plate 3 and the first permeable steel plate 3, which are concentric with the model box 1 and are circumferentially distributed. Three water-permeable steel plates 4, multiple through holes on the water-permeable steel plates, water-filtering geotextiles 5 attached to the inner and outer sides of the water-permeable steel plates, the geotextiles on the inside of the second water-permeable steel plate 3 and the geotextiles on the outside of the third water-permeable steel plate 4 There is an anti-seepage wall 6 attached between the cloths, and there is the same ...