CN-224214184-U - Novel anti-floating shield segment for water-rich hard rock stratum

CN224214184UCN 224214184 UCN224214184 UCN 224214184UCN-224214184-U

Abstract

The utility model provides a novel anti-floating shield segment for a water-rich hard rock stratum. The novel anti-floating shield segment for the water-rich hard rock stratum comprises a segment main body and a waterproof cap, wherein four side connecting grooves and two end connecting grooves are symmetrically formed in the segment main body, segment bolts are installed on the segment main body, an inner threaded sleeve is fixedly installed on the segment main body, a screw is installed on the inner threaded sleeve in an inner threaded mode, a cross groove is formed in the bottom of the screw, grouting grooves are formed in the screw, a top disc is fixedly installed at the top of the screw, and a plurality of storage grooves are formed in the outer wall of the top disc. The novel anti-floating shield segment for the water-rich hard rock stratum has the advantages that after the shield segment is assembled into the annular segment, the screw is rotated by the tool to enable the top disc to prop against the stratum, then grout is injected into the stratum, the capsular bag is expanded to prop against the stratum, the shield segment is positioned in time, and floating is prevented.

Inventors

Chu Yuelang
ZHANG YONGXIANG
LIU QIGANG
Quan Maowei
LIANG CHENGCHENG
LI ZHENDONG
WAN LINGLING
ZHANG YUWEI
DING FEI
ZHANG MINGTAO
Zhou Juheng
ZHANG JIALE
LIU SHILONG
ZHANG FEI
ZHANG JIE
WEI YUJIAO

Assignees

中煤第三建设（集团）有限责任公司

Dates

Publication Date: 20260508
Application Date: 20250619

Claims (6)

1. Novel anti-floating shield segment for water-rich hard rock stratum, which is characterized by comprising: the pipe piece comprises a pipe piece body and a waterproof cap, wherein four side connecting grooves and two end connecting grooves are symmetrically formed in the pipe piece body, pipe piece bolts are installed on the pipe piece body, an inner threaded sleeve is fixedly installed on the pipe piece body, a screw is installed on the inner threaded sleeve in an inner threaded mode, a cross groove is formed in the bottom of the screw, a grouting groove is formed in the screw, a top disc is fixedly installed at the top of the screw, a plurality of storage grooves are formed in the outer wall of the top disc, and a bag is fixedly installed in each storage groove.
2. The novel anti-floating shield segment for the water-rich hard rock stratum of claim 1, wherein the segment bolt comprises an arc bolt and a lock nut, and the lock nut is sleeved on the arc bolt in a threaded manner.
3. The novel anti-floating shield segment for the water-rich hard rock stratum of claim 1, wherein the segment main body is provided with a hidden groove, the internally threaded sleeve is communicated with the hidden groove, and the top disc is positioned in the hidden groove.
4. The novel anti-floating shield segment for the water-rich hard rock stratum of claim 1, wherein the segment body is provided with a waterproof groove, the waterproof groove is communicated with the internally threaded sleeve, and the waterproof cap is arranged in the waterproof groove.
5. The novel anti-floating shield segment for the water-rich hard rock stratum according to claim 1, wherein a plurality of segment bodies can be spliced into an annular segment, and two adjacent segment bodies are fixedly connected through segment bolts passing through end connecting grooves.
6. The novel anti-floating shield segment for the water-rich hard rock stratum according to claim 5, wherein two adjacent annular segments are connected and fixed through segment bolts passing through the side connecting grooves.

Description

Novel anti-floating shield segment for water-rich hard rock stratum Technical Field The utility model belongs to the technical field of shield segments, and particularly relates to a novel anti-floating shield segment for a water-rich hard rock stratum. Background The shield segment is a main assembly component for shield construction, is the innermost barrier of a tunnel, and plays roles of resisting soil layer pressure, underground water pressure and some special loads. The shield segment is a permanent lining structure of the tunnel by a shield method, and the quality of the shield segment is directly related to the overall quality and safety of the tunnel, so that the waterproof performance and the durability of the tunnel are affected. However, when the shield of the water-rich hard rock stratum is tunneled, the shield segments are directly fixed through grouting, and the following defects exist: 1. The water content of the water-rich hard rock stratum is high, slurry is diluted after grouting, and the fixing effect is affected; 2. after grouting, the solidification speed of concrete slurry is slower, so that the tunneling progress of the shield tunneling machine is influenced. Therefore, it is necessary to provide a novel anti-floating shield segment for a new water-rich hard rock stratum to solve the technical problems. Disclosure of utility model The utility model solves the technical problem of providing a novel anti-floating shield segment for a water-rich hard rock stratum, which can prevent floating up by rotating a screw rod through a tool after assembling the shield segment into an annular segment, enabling a top disc to prop against a stratum, then injecting slurry, expanding a bag to prop against the stratum, and positioning the segment in time. In order to solve the technical problems, the novel anti-floating shield segment for the water-rich hard rock stratum comprises a segment main body and a waterproof cap, wherein four side connecting grooves and two end connecting grooves are symmetrically formed in the segment main body, segment bolts are installed on two adjacent segment main bodies, an inner threaded sleeve is fixedly installed on the segment main body, a screw is internally threaded and installed on the inner threaded sleeve, a cross groove is formed in the bottom of the screw, a grouting groove is formed in the screw, a top disc is fixedly installed at the top of the screw, a plurality of containing grooves are formed in the outer wall of the top disc, and a bag is fixedly installed in each containing groove. As a further scheme of the utility model, the segment bolt comprises an arc bolt and a locking nut, and the locking nut is sleeved on the arc bolt in a threaded manner. As a further scheme of the utility model, a hidden groove is formed in the duct piece main body, the internal thread sleeve is communicated with the hidden groove, and the top disc is positioned in the hidden groove. As a further scheme of the utility model, the segment main body is provided with a waterproof groove, the waterproof groove is communicated with the internal thread sleeve, and the waterproof cap is arranged in the waterproof groove. As a further scheme of the utility model, a plurality of duct piece bodies can be spliced into an annular duct piece, and two adjacent duct piece bodies are connected and fixed through duct piece bolts passing through the end connecting grooves. As a further scheme of the utility model, two adjacent annular duct pieces are connected and fixed through a duct piece bolt passing through the side connecting groove. Compared with the related art, the novel anti-floating shield segment for the water-rich hard rock stratum has the following beneficial effects: The utility model can rotate the screw rod through the tool after assembling the pipe piece main body into the annular pipe piece, push the top disc out to prop against the rock stratum, then inject the cement and water glass double slurry, make the bag expand to prop against the rock stratum, position the annular pipe piece in time, prevent floating. Drawings The present utility model is further described below with reference to the accompanying drawings for the convenience of understanding by those skilled in the art. FIG. 1 is a schematic diagram of a three-dimensional structure of a novel anti-floating shield segment for a water-rich hard rock stratum; FIG. 2 is a schematic cross-sectional structure view of a novel anti-floating shield segment for a water-rich hard rock stratum; FIG. 3 is a schematic view of a first partial structure of a novel anti-floating shield segment for a water-rich hard rock stratum; Fig. 4 is a schematic diagram of a second partial structure of a novel anti-floating shield segment for a water-rich hard rock stratum. In the figure, 1, a duct piece main body, 2, a side connecting groove, 3, an end connecting groove, 4, a duct piece bolt, 401, an arc bolt, 402, a lock nut, 5, an internal thr