Tunnel excavation protection cover combined with crack water early warning type anchor cable
A technology of tunnel excavation and fissure water, which is applied in the direction of temporary shield, installation of bolts, mining devices, etc., to achieve the effects of high feasibility, simplified support and simple structure
Inactive Publication Date: 2021-11-05
LIAONING TECHNICAL UNIVERSITY
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Problems solved by technology
[0004] The purpose of the present invention is to solve the collapse accident in the tunnel excavation process, effectively protect the construction safety, simplify the initial support, and can effectively solve the problems of early warning of the self-propelled anchor cable to the fissure water during the development of rock formation fissures. Effective early warning of the development of rock formation fissure water, so as to ensure the safety of supporting surrounding rock
Method used
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Embodiment Construction
[0018] In order to further illustrate the present invention, the present invention will be described in detail below in conjunction with the accompanying drawings and embodiments, but they should not be construed as limiting the protection scope of the present invention.
[0019] A kind of tunnel excavation protective cover combined with fracture water warning type anchor cable, such as figure 1 As shown, it mainly includes the excavation port, the outer port, the outer protective plate support plate, the easy-sliding bottom plate, the bottom corner support reinforced protection plate, the circumferential reinforcement rib, and the crevice water warning type self-advancing anchor cable.
[0020] The vertical cross-section of the support plate of the outer protective plate is arched, rectangular, elliptical (the part cut off at the bottom), circular (the part cut off at the bottom), there is no protective plate at the bottom, and the thickness is 5~50mm; the excavation port and ...
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The invention provides a tunnel excavation protection cover combined with a crack water early warning type anchor cable. A tunneling port and an outer side port of an outer protection board supporting plate are both vertical, and the section of the tunneling port is larger than that of the outer side port; a plurality of annular reinforcing ribs are arranged in the outer protection board supporting plate; the bottoms of the outer protection board supporting plate at the bottoms of the two sides are each provided with an easy-to-slide bottom plate; a bottom angle supporting reinforcement protection plate is arranged on the inner side or the outer side of the outer protection board supporting plate, or bottom angle supporting reinforcement protection plates are arranged on the inner side and the outer side of the outer protection board supporting plate; a self-propelled anchor cable is reinforced on the outer protection board supporting plate; and the self-propelled anchor cable is connected with a crack water early warning device through a drainage wire. The tunnel excavation protection cover has the beneficial effects that tunnel excavation construction is facilitated, supporting is simplified, and crack water can be early warned, so that personnel and property safety is guaranteed to the maximum extent; and the structure is simple, machining and operation are convenient, and the feasibility of excavation of different tunnels is high.
Description
technical field [0001] The invention relates to tunnel construction technology, in particular to a tunnel excavation protection cover combined with a fissure water warning type anchor cable. Background technique [0002] When passing through a variety of accumulation bodies, due to the loose structure, there is no or poor cementation between the particles, which will cause collapse after excavation. There are also many accidents caused by engineering geological disasters. This is caused by the use of the same construction methods without timely taking targeted treatment measures without knowing the adverse geological conditions ahead. The surrounding rocks in front of the tunnel face are broken, joints are developed, rocks are vertical, there are mud interlayers between rock layers, and fault zones appear in front. These unfavorable geology can easily lead to landslide accidents. Therefore, it is of great significance to develop a freely movable tunnel excavation protection...
Claims
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IPC IPC(8): E21D19/04E21D19/06E21D21/00E21D20/00E21D20/02E21F17/18
CPCE21D19/04E21D21/0026E21D20/003E21D20/02E21F17/18
Inventor 金佳旭袁士豪刘家顺李祥磊英明肖晓春王加铭齐大伟
Owner LIAONING TECHNICAL UNIVERSITY