Small-duct grouting hole plugging device and method
A plugging device and a technology for grouting holes, which are applied in sealing/isolation, earthwork drilling, wellbore/well components, etc., can solve the problems of inability to bear the pressure of slurry backflow, inability to cement sand and soil, and low efficiency. Achieve good sealing, save construction cost and improve construction efficiency
Pending Publication Date: 2019-04-09
SHIJIAZHUANG TIEDAO UNIV +1
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Problems solved by technology
First of all, sandy soil cannot be effectively cemented with plastic clay
Since the sand particles are in a discrete state, the frictional resistance between them and the hemp silk and plastic mud is small, and they cannot bear the pressure of the backflow of the slurry
Secondly, this method needs to pre-wrap the hemp silk and make plastic mud, the process is complicated and the efficiency is low
Method used
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[0032] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in combination with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are exemplary only, and are not intended to limit the scope of the present invention. Also, in the following description, descriptions of well-known structures and techniques are omitted to avoid unnecessarily obscuring the concept of the present invention.
[0033] The small conduit grouting hole plugging device disclosed in this embodiment includes: a small grouting conduit 3, which is a rigid hollow conduit, and the small grouting conduit 3 is used to extend into the hole to be grouted, and the small grouting conduit The outer end of the conduit 3 can be connected with an external grouting pipe for grouting operation.
[0034] The grout stopper assembly includes a sleeve a...
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The invention relates to a small-duct grouting hole plugging device and method. The device comprises a small grouting duct, a grout stop sleeve assembly and a pile casing, wherein the small grouting duct is used for extending into a grouting hole, and the outer end of the small grouting duct can be connected with an external grouting pipe for grouting operation; the grout stop sleeve assembly comprises a sleeve and teeth distributed on the outer side surface of the sleeve, the outer wall of the small grouting duct is sleeved with the sleeve, tops of the teeth can stretch outwards and form an acute angle with the direction of the small grouting duct extending into the grouting hole; the pile casing can be movably arranged on the outer side of the grout stop sleeve assembly in a sleeving manner, is used for pressing down the teeth in advance when the small grouting duct extends into the to-be-grouted hole to enable the device to enter the to-be-grouted hole smoothly and can be pulled outafter the small grouting duct extends into the to-be-grouted hole to enable the teeth to expand outwards. The device can be quickly mounted on the small duct and guarantee good sealing performance ofthe hole.
Description
technical field [0001] The invention relates to a device for sealing the grouting hole of a small conduit and a method for sealing the grouting hole by using the device in tunnel engineering construction on sandy ground. The device can be quickly installed on the small conduit, and Ensure that the orifice has a good seal. Background technique [0002] Small conduit grouting is an important means of pre-reinforcing or water-stopping the front strata during tunnel construction. The so-called grouting refers to the use of hydraulic pressure, air pressure, etc., to inject some solidified grout into the rock and soil medium by drilling grouting holes or preset devices. Diffusion inside it, driving out the air and water in the void medium and replacing them, through the increase of the density of the rock and soil itself and the gelation of the grout, the formation strength, impermeability and stability of the injected rock and soil are all improved. Greatly improved new structu...
Claims
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IPC IPC(8): E21B33/13
CPCE21B33/13
Inventor 李文江王庆磊卜新宝孙源关岳卓尔韩现民崔蓬勃张全秀康雪军马识途刘雨濛
Owner SHIJIAZHUANG TIEDAO UNIV