Foaming performance testing device for shield muck-improving foaming agent and using method of foaming performance testing device
A technology for improvement of dregs and foaming performance, which is applied in the direction of analyzing materials and instruments, and can solve the problems of different performances and great differences in the ability to generate foam, etc., to achieve favorable foaming effect, simple equipment, and simple and easy operation Effect
Active Publication Date: 2015-07-08
CENT SOUTH UNIV
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At the same time, the performance of the foaming agents on the market is different, and the ability to generate foam is also very different.
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[0018] The specific implementation manners of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0019] see figure 1 , figure 2 , image 3 with Figure 4 , the diameter of the cylinder of the foaming body 20 is 500mm, and the height is 800mm. The foaming body 20 is divided into a compressed air chamber 21 and a foaming agent chamber 22 by a vertical partition 11, and an air pipe 10 connects the upper end of the foaming agent chamber 22 with the foaming agent. The lower end of the cavity 22 and the outlet of the ventilation pipe 10 are provided with fillers 15, the fillers 15 are glass balls, lathe chips or steel wool, the two ends of the fillers 15 are provided with orifice plates 16, and the aperture of the orifice plates 16 is 0.5 mm. The foam body 20 is provided with a liquid level scale tube 5 communicating with the foam agent chamber 22, and the minimum scale of the liquid level scale tube 5 is 0.1L; the foam body ...
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Abstract
The invention discloses a foaming performance testing device for shield muck-improving foaming agent and a using method of the foaming performance testing device. Foam agent solution to be tested is prepared and then fed in a simple foaming machine; then compressed air is injected in the foaming machine; after a certain pressure is achieved, a foam outlet pipe is opened, and foams are generated; the ratio of the volume of the obtained foams to the decreased volume of the liquid level scale pipe of the foaming machine is the foaming ratio. The foaming performance testing device is simple, and easy and feasible in operation; in particular, under the condition of unknown foaming effect of the foaming agent in a shield foaming system. the testing method is very effective; the testing cost is low, and the technical method is easy to master; after the adoption of the foaming method, the foaming ratio of the foaming agent can be precisely calculated, and the condition is beneficial to objectively determine the foaming performance of the foaming agent solution; the generated foams are uniform, so that the conditions of nonobjective evaluation on the foaming agent due to easy dissipation of the foams, caused by large diameter difference of the foams are reduced.
Description
technical field [0001] The invention relates to a device for identifying the foaming performance of a foaming agent for improving shield-boring dregs, and also relates to a method for using the device for evaluating the foaming performance of a foaming agent for improving shield-boring dregs. Background technique [0002] With the development of rail transit in the country, earth pressure balance shield plays an irreplaceable role in subway construction. However, shield tunneling in different strata will encounter many problems. In order to ensure the normal excavation of the shield machine, it is particularly important to improve the muck. Foam, as an important soil improvement additive, is suitable for various strata and is widely used. In the actual application process, the foaming performance of the foaming agent directly affects the improvement effect of the dregs during shield tunneling. At the same time, the performance of the foaming agents on the market varies, an...
Claims
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IPC IPC(8): G01N7/00
Inventor 王树英叶新宇肖超周纯择阳军生翟圣志张细宝刘卫
Owner CENT SOUTH UNIV