The Construction Structure and Construction Method of the Cross Passage of the Mine Tunnel
A construction method and cross-channel technology, applied in tunnels, tunnel linings, mining equipment, etc., can solve the problems of low timeliness of material transportation and low construction period, and achieve the effect of improving construction efficiency
Active Publication Date: 2019-07-30
CHINA CONSTR EIGHT ENG DIV CORP LTD
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Problems solved by technology
[0003] The purpose of the present invention is to overcome the defects of the prior art, provide a construction structure and construction method of the tunnel cross passage of the mining method, and solve the problems caused by the low timeliness of material transportation in the construction of the existing tunnel cross passage and the long construction period. high pressure problem
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[0071] As another preferred embodiment of the present invention, the construction access door includes:
[0072] Such as Figure 3 to Figure 4 As shown, a door-type support member 231 adapted to the hole 2211 is provided, and the door-type support member 231 is erected in the hole 2211;
[0073] Provide connecting steel bars 232, weld one end of the connecting steel bar 232 with the door-type support member 231, and weld the other end with the steel grid on the edge of the hole 2211, and fix the door-type support member 231 on the steel grid in the next door 221 through the connecting steel bar 232;
[0074] Spray concrete on the periphery of the portal support member 231 to form a sprayed concrete layer 233 covering the portal support member 231 , the connecting steel bar 232 and the edge of the hole 2211 .
[0075]The sprayed concrete layer 233 is formed by C25 mesh sprayed concrete. After the portal support member 231 is fixed, C25 is used to spray the outer periphery of t...
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The invention relates to a construction method of a tunnel cross passage constructed by a mining method. The construction method comprises the following steps that the tunnel cross passage is constructed by adopting a pilot-tunneling method; holes which communicate with pilot tunnels located on both sides of partition walls are formed in supporting structures of the pilot tunnels by excavation, and side doors are constructed at the holes to form transverse transportation passages; openings which communicate with the pilot tunnels located on the upper and lower sides of supporting plates are formed in the supporting structures by excavation, and stairs are installed at the openings to form vertical passageways; and during construction, materials required for construction are stored by the excavated pilot tunnels, and the materials are transported to the locations required for the construction through the horizontal transportation passages and the vertical passageways. According to the construction method, the side doors and the openings are formed to communicate with the pilot tunnels, materials required for the construction are stored by the excavated pilot tunnels, and operators can carry the materials between the pilot tunnels through the side doors and the openings, so that the construction efficiency is improved greatly.
Description
technical field [0001] The invention relates to the technical field of building construction, in particular to a construction structure and a construction method of a mine-method tunnel cross passage. Background technique [0002] The tunnel cross passage is a structure connecting two parallel tunnels. During construction, the tunnel cross passage is formed by excavating from the side of one tunnel to the side of the other tunnel. When the cross-section width and height of the tunnel cross passage are large, sub-pilots are usually used to excavate in layers and sections. From one end of the pilot tunnel to the internal construction site, due to the low timeliness for a single crane to transport multiple materials, and the lack of space inside the tunnel, multiple cranes cannot be accommodated, resulting in greater pressure on the construction period. Contents of the invention [0003] The purpose of the present invention is to overcome the defects of the prior art, provid...
Claims
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IPC IPC(8): E21D9/00E21D11/10
CPCE21D9/008E21D11/107
Inventor 李建伟冯硕张士骏
Owner CHINA CONSTR EIGHT ENG DIV CORP LTD