A microbial grouting device and construction method for reinforcing deep and thick soft clay
A grouting device and microbial technology, applied in the field of geotechnical engineering, can solve the problems that the grouting method cannot be applied to soft and sticky soil, and achieve the effect of reducing project cost and avoiding pollution
Active Publication Date: 2021-09-17
HOHAI UNIV
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Problems solved by technology
[0006] The technical problem to be solved by the present invention is to provide a microbial grouting device and construction method suitable for reinforcing deep and thick soft clay, which is used to solve the problem that existing grouting methods cannot be applied to deep and / or soft clay
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[0041] The present invention will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.
[0042] Such as figure 1 As shown, a microbial grouting device for reinforcing deep soft clay includes an automatic control system 14, a liquid inlet system, a conductivity measurement device, a solution circulation system and a stirring device. Specifically, the liquid inlet system includes a liquid inlet pipe The two liquid inlets connected by the pipeline, the flow rate control switch 12 corresponding to each liquid inlet, the liquid stirring device 11 and the pressure slurry supply device 1 located on the liquid inlet pipeline, the liquid inlet is used for microbial solution inlet and reaction liquid Liquid inlet, the two liquid inlets can be used to respectively feed the component solutions...
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The invention discloses a microbial grouting device and a construction method for reinforcing deep and thick soft clay, including a control system, a liquid inlet system, a conductivity measurement device, a solution circulation system and a stirring device; the liquid inlet system is used to control microorganisms solution and reaction liquid inlet rate; the solution circulation system is used to introduce the microbial solution and the reaction liquid into the soil body of the layer to be solidified, and to suck the pore water of the layer to be solidified; the conductivity measuring device is used to measure the suction liquid in real time The electrical conductivity is used to control the liquid inlet rate and the lifting of the stirring device; the stirring device is used to stir the soil to be solidified layer and the microbial solution / reaction liquid evenly, and the invention provides a method for microbial reinforcement treatment of deep soft clay The effective method avoids the pollution of the natural environment caused by traditional cement and reduces the construction cost. At the same time, the automatic control system is used to control the construction process, which ensures the construction quality and improves the construction efficiency.
Description
technical field [0001] The invention relates to a microbial grouting device and a construction method for reinforcing deep soft clay, belonging to the technical field of geotechnical engineering. Background technique [0002] In recent years, people have paid more and more attention to sustainable development and environment-friendly development, and microbial-induced calcium carbonate deposition technology (hereinafter referred to as microbial reinforcement technology) has become a research hotspot in the field of soft ground treatment. This technology mainly uses urease-producing microorganisms to decompose urea, and combines the carbonate ions produced by the decomposition with calcium ions in the reaction liquid to produce calcium carbonate precipitation, so as to strengthen the soil structure. This method has gradually become the cutting-edge technology of foundation reinforcement due to its characteristics of rich resources, fast and efficient, and non-toxic products. ...
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IPC IPC(8): E02D3/12
CPCE02D3/12
Inventor 陈育民丁绚晨张鑫磊
Owner HOHAI UNIV