Constant-resistance large deformation anchor cable control method for soft rock tunnel surrounding rock large deformation disaster
A technology of constant resistance, large deformation and control method, which is applied in the direction of tunnel, tunnel lining, bolt installation, etc., and can solve problems such as increased construction cost, large deformation of weak surrounding rock, and inability to determine reasonable parameters of support at one time.
Active Publication Date: 2019-07-12
CHINA UNIV OF MINING & TECH (BEIJING)
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Domestically, such as the Jiazhuqing Tunnel of the Nankun Railway, the Muzha Tunnel of Taiwan, the Wushaoling Tunnel of the Lanwu Line, the Guanjiao Tunnel of the Qinghai-Tibet Line, the Partridge Mountain Tunnel of the National Highway 317, the Muzhailing Tunnel of the Lanzhou-Chongqing Railway, and the currently under construction Wei The Muzhailing Highway Tunnel of Wuhan Expressway and other projects have experienced large deformations of weak surrounding rocks in different degrees and forms, which has brought great difficulties and safety risks to the construction of the project, and the increase in the repair rate has greatly increased the construction cost. and extended construction period
[0003] In order to effectively control the large deformation of the soft surrounding rock of the tun...
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[0048]Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the present invention. Rather, they are merely examples of apparatuses and methods consistent with aspects of the invention as recited in the appended claims.
[0049] The following will refer to the attached Figure 1-6 The solution of the present invention will be described in detail in conjunction with the examples. It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.
[0050] This specific embodiment provides a method for controlling the co...
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Abstract
The invention provides a constant-resistance large deformation anchor cable control method for soft rock tunnel surrounding rock large deformation disaster. Guniting sealing is carried out on a fracture surface timely after tunneling, contact time of surrounding rock and air is shortened, a steel bar net is rapidly laid and a constant-resistance large deformation anchor cable is installed, and thesurrounding rock is reinforced through high prestress of the anchor cable. Huge plasticity energy in the surrounding rock can be released in a large deformation mode, firstly, the huge plasticity energy acts the constant-resistance large deformation anchor cable, after the surrounding rock plasticity energy is released, energy acting on a supporting body can reduce gradually, at the moment, the constant-resistance large deformation anchor cable supporting body can be located in a constant-resistance coupling supporting state, steel arch supporting is combined, the supporting effect of ''couple hardness with softness'' is formed, the stability of tunnel surrounding rock is guaranteed, and the soft rock tunnel surrounding rock large deformation disaster is avoided.
Description
technical field [0001] The invention belongs to the technical field of support for surrounding rock deformation of soft rock tunnels, and in particular relates to a constant resistance large deformation anchor cable control method for large deformation disasters in surrounding rocks of soft rock tunnels. Background technique [0002] Since the first severe large deformation of weak surrounding rock in a traffic tunnel occurred in the early 20th century, there have been many cases of large deformation of surrounding rock in tunnel engineering at home and abroad, and it has always been a major problem in the underground engineering field. Abroad, such as Tauern Tunnel (Tauern) in Austria, Simplon Tunnel (Simplon) from Switzerland to Italy, Ena Mountain Tunnel in Japan, Arlberg Tunnel in Austria, etc., have all experienced serious large deformations. Domestically, such as the Jiazhuqing Tunnel of the Nankun Railway, the Muzha Tunnel of Taiwan, the Wushaoling Tunnel of the Lanwu...
Claims
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Patent Timeline
Login to view more IPC IPC(8): E21D11/00E21D11/10E21D11/18E21D11/15E21D20/00E21D9/04F42D3/04
CPCE21D9/006E21D9/04E21D11/003E21D11/006E21D11/10E21D11/152E21D11/18E21D20/00
Inventor 陶志刚郑小慧李干张博赵成伟李梦楠
Owner CHINA UNIV OF MINING & TECH (BEIJING)
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