Long-cantilever horizontal rotary jetting system
A technology of horizontal rotary injection and long cantilever, which is applied in wellbore lining, tunnel lining, underground chamber, etc., can solve the problems of discontinuous and uneven grouting piles, no public horizontal rotary injection facilities, etc., to shorten the construction period, High-quality construction and improved work efficiency
Pending Publication Date: 2019-05-17
北京瑞威世纪铁道工程有限公司
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Problems solved by technology
However, this invention still has the following shortcomings or deficiencies: (1), the specific structure of the horizontal jet grouting facility is not disclosed; (2), the grouting process is the injection of a horizontal mode, and its existence needs to overcome the grouting pile produced by the grout due to its own gravity Discontinuous or uneven defects
However, this invention still has the following disadvantages or deficiencies: (1) traditional drilling machines and grouting machines are required for alternate construction; (2), the grouting method is a horizontal injection, and its existence needs to overcome the grouting caused by grouting due to its own gravity. Discontinuous or uneven defects in slurry piles
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[0036] The present invention proposes a long cantilever horizontal rotary grouting system, which can horizontally inject cement slurry into the soft ground to form a uniform and dense reinforced pile body, complete the curtain system of the entire tunnel, and not only improve the bearing capacity of the weak surrounding rock, The stability of the surrounding rock and effective control of rock and soil deformation, and greatly improve work efficiency, to achieve the purpose of advanced support for weak strata and full-section mechanized excavation.
[0037] The term "tunnel" used in the present invention includes passages or spaces that need to be excavated such as above-ground or underground tunnels or tunnels.
[0038] According to an exemplary embodiment of the present invention, such as figure 1 As mentioned above, the long cantilever horizontal jet spraying system of the present invention includes: a movable fuselage 100, a drilling support frame group 200 installed on one...
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The invention discloses a long-cantilever horizontal rotary jetting system which comprises a moving machine body, a drilling device, a rotary jetting device, a grouting device, a drilling supporting frame group and a rotary jetting supporting frame group, wherein the drilling supporting frame group comprises a first drilling supporting frame and a second drilling supporting frame which can be lifted independently; the rotary jetting supporting frame group comprises a first rotary jetting supporting frame and a second rotary jetting supporting frame which can be lifted independently; the drilling device is supported by the tops of the first drilling supporting frame and the second drilling supporting frame and can move back and forth relative to the moving machine body; the drilling devicecomprises a drill bit arranged at the front end of the drilling device and a drill rod connected to the rear end of the drill bit; the rotary jetting device is supported by the tops of the first rotary jetting supporting frame and the second rotary jetting supporting frame; the rotary jetting device can move back and forth relative to the moving machine body; the rotary jetting device comprises aspraying head assembly arranged at the front end of the rotary jetting device and a material conveying pipeline connected to the rear end of the spraying head assembly; the spraying head assembly is communicated with the grouting device through the material conveying pipeline.
Description
technical field [0001] The invention relates to the technical field of tunnel engineering, in particular to a construction system for advanced pre-reinforcement of weak surrounding rocks in tunnels and underground engineering. Background technique [0002] With the rapid development of railways in my country, especially mountainous railways, there are more and more mountain tunnels. Due to the limitation of the radius of the curve, railway tunnels need to pass through mountains. Various geological structural zones are widely distributed in these areas, especially weak fault zones. This kind of fault has the characteristics of deep burial, rich water, and interlayer in the weak zone. In the construction of tunnels and underground engineering in weak and broken ground, it is easy to have safety problems such as large deformation of surrounding rock and collapse of working face, slow construction progress and extremely high work efficiency. Low technical problems, and even seri...
Claims
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IPC IPC(8): E21D9/00E21D9/10E21D11/10
Inventor 彭峰张继昶邹明波
Owner 北京瑞威世纪铁道工程有限公司