Shield receiving semi-open steel sleeve mechanism and construction method thereof
A semi-open, steel-sleeved technology, which is applied in earth square drilling, mining equipment, mining equipment, etc., can solve problems such as reducing construction safety risks and unreasonable force, and achieves simplified construction procedures, reduced construction period, and reduced seepage. The effect of leakage pressure
Pending Publication Date: 2020-10-02
CHINA CONSTR FIRST GROUP THE FIFTH CONSTR +2
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[0005] The purpose of the present invention is to overcome the deficiencies of the prior art, to provide a shield receiving semi-open steel sleeve mechanism and its construction method, which can reduce construction safety risks and solve the unreasonable force of the current steel sleeve receiving system device. question
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[0044] Below the present invention is further described:
[0045] see Figure 1-4 , which is an arc-shaped water-stop rubber strip with a certain thickness and width
[0046] The invention discloses a shield receiving semi-open steel sleeve mechanism, which includes a steel sleeve body used to fit a shield machine 31, a short steel sleeve 7, an arc-shaped side soil retaining strip 12, and a reinforcing cover plate 13 , reaction force frame 15, large grouting nozzle 17, small grouting nozzle 30, and grouting nozzle 18, the steel sleeve body is composed of front unit steel sleeve 101 and rear unit connected in sequence along its axial direction. The steel sleeve 102 is composed of; the front unit steel sleeve 101 and the rear unit steel sleeve 102 are respectively composed of a front semicircular steel cylinder 1, a front semicircular steel cylinder 3 with a base, and a rear semicircular steel cylinder along its circumference. 2. It is composed of a rear semicircular steel cyl...
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The present invention relates to the technical field of underground tunnel excavation construction, in particular to a shield receiving semi-open steel sleeve mechanism and a construction method thereof. The shield receiving semi-open steel sleeve mechanism comprises a steel sleeve body, a short steel sleeve, an arc-shaped-edge soil retaining slat and a reinforcing cover plate, wherein the steel sleeve body is used for sleeving a shield machine, and composed of a front-unit steel sleeve and a rear-unit steel sleeve which are sequentially connected in the axial direction of the steel sleeve body; the front end surface of the front-unit steel sleeve is in semi-open connection with a receiving wellhole door wall; the short steel sleeve is arranged outside the front-unit steel sleeve; the front end of the short steel sleeve is connected with the receiving wellhole door wall; and the inner wall of the rear end of the short steel sleeve and the outer wall of the front-unit steel sleeve are connected through a connecting mechanism. By the adoption of the shield receiving semi-open steel sleeve mechanism, the phenomenon that all joints of the steel sleeve are pull apart during the shield receiving propulsion process as well as the pressure maintaining failure problem can be solved, thereby greatly reducing the safety risk of steel sleeve shield receiving construction; and through a transition space, the problem that the steel sleeve dismounting efficiency is low can be solved, thereby accelerating the construction progress.
Description
technical field [0001] The invention relates to the technical field of underground tunnel excavation construction, in particular to a shield receiving semi-open steel sleeve mechanism and a construction method thereof. Background technique [0002] Because the subway shield construction is carried out section by section, after the shield machine completes a section tunnel construction task, it needs to exit the tunnel and enter the receiving working shaft. If the environmental conditions are good and allowable, it is usually necessary to strengthen the weak ground at the end of the receiving well of the station to prevent water and soil in the formation from bursting and quicksand when some maintenance structures in the well wall of the station are broken, which will then cause The danger of ground subsidence. However, sometimes due to various reasons, reinforcement cannot be used to treat the end well or the weak formation treated by end reinforcement is not good enough, s...
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IPC IPC(8): E21D9/06E21D9/00E21D9/14E21F17/00
CPCE21D9/001E21D9/06E21D9/14E21F17/00
Inventor 刘嘉茵赵抚民李攀周佩祺田子剑薛刚王彦明苏东黎赵亚军赵保森吕朋何正福
Owner CHINA CONSTR FIRST GROUP THE FIFTH CONSTR