Foundation pit confined water dewatering laboratory simulation test device and test method thereof
A technology of simulation test and test method, applied in the test of infrastructure, infrastructure engineering, construction, etc., can solve problems such as only simulation, limited water pressure simulation range, hindering groundwater seepage, etc., to ensure accuracy and safety The effect of high stability, high detection accuracy and controllable water pressure
Pending Publication Date: 2019-06-07
江苏省地质矿产局第三地质大队 +1
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[0004] Chinese patent 201310303890.9 discloses an indoor simulation test method for pile foundations to hinder groundwater seepage. This test considers the influence of pile foundations on groundwater seepage during precipitation, but there are the following deficiencies: (1) The test soil layer is a single layer of soil, The number of soil layers is difficult to simulate the real underground situation; (2) it can only simulate the seepage situation in the case of the aquifer, and cannot simulate the precipitation and groundwater seepage situation in the case of the confined aquifer; Chinese patent 201510759865.0 discloses a teaching simulation An experimental device for aquifers, which uses water bags to simulate confined aquifers, but has the following deficiencies (1) the simulation range of water pressure is limited, and there is no intuitive control of the simulated water pressure; (2) the use of water bags Fill water to simulate the aquifer, the water is not in contact with the soil, the simulation is too ideal
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[0027] like figure 1 As shown, the indoor simulated test device structure of the foundation pit pressurized water dewatering in this embodiment includes two parts: a model box 1 and a water-air exchanger 8, and the model box 1 communicates with the water-air exchanger 8 through a water supply pipe 7. About the structure of model box 1 such as figure 1 The simulated soil layer 2 is placed inside the model box 1, and the aquifer in the middle of the simulated soil layer 2 is a confined water layer. Set the dewatering well pipe 4 and the monitoring well pipe 5 in the simulated soil layer 2, cover the simulated soil layer 2 with the cover plate 3, the cover plate 3 is set on the dewatering well pipe 4 and the monitoring well pipe 5, and the water supply is arranged on the inner wall of the model box 1 Pipe 7, water supply pipe 7 stretches out model box 1 and is communicated with water-air exchange instrument 8, scale 61 is also set on the model box 1 inner wall (as Figure 7 Sho...
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The invention discloses a foundation pit confined water dewatering laboratory simulation test device and a test method thereof. The foundation pit confined water dewatering laboratory simulation testdevice comprises a model box and a water-air exchanger, and the model box communicates with the water-air exchanger through a water supply pipe. According to the foundation pit confined water dewatering laboratory simulation test device, the dewatering process of a confined aquifer of a foundation pit is simulated, meanwhile, the groundwater level fluctuation can be monitored, the detection accuracy is higher, reference for design parameters and construction of foundation pit dewatering can be provided, the accuracy and safety of foundation pit excavation dewatering are ensured, and reliable parameters are provided for design of foundation pit dewatering.
Description
technical field [0001] The invention relates to an experimental device and a test method, in particular to an indoor simulated test device and a test method for foundation pit pressurized water precipitation. Background technique [0002] In the coastal and riverside areas, not only the groundwater is abundant, but also the foundation soil layer is often interlayered between strong and weak permeable layers. The excavation of earthwork causes the aquifer to break, and due to the effect of pressure difference, a large amount of groundwater will inevitably flow into the foundation pit. The deformation and instability of the foundation pit caused by the action of confined water in the project is one of the major risk sources of deep foundation pit engineering in this type of area. If the dewatering and drainage work is not carried out in time, the continuous water seepage of the foundation pit will cause the construction conditions on site to deteriorate and As the bearing capa...
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IPC IPC(8): E02D33/00
Inventor 黄留新周爱兆葛鹏王威刘刚王炳辉隋晓岚
Owner 江苏省地质矿产局第三地质大队