CN209959255U - Shield ring-forming duct piece capable of effectively preventing leakage of synchronous grouting slurry - Google Patents
Shield ring-forming duct piece capable of effectively preventing leakage of synchronous grouting slurry Download PDFInfo
- Publication number
- CN209959255U CN209959255U CN201920480430.6U CN201920480430U CN209959255U CN 209959255 U CN209959255 U CN 209959255U CN 201920480430 U CN201920480430 U CN 201920480430U CN 209959255 U CN209959255 U CN 209959255U
- Authority
- CN
- China
- Prior art keywords
- block
- arc
- duct piece
- annular water
- standard block
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model discloses a shield that can effectively prevent synchronous slip casting thick liquid seepage constructs into ring section of jurisdiction has solved the problem that the thick liquid was leaked easily in radial 3 centimetres apart from the space that exists between section of jurisdiction annular sealing rod and the section of jurisdiction outer arc side in the synchronous slip casting. In the sealing rod outside of the concatenation face of two adjacent arc section of jurisdiction of same ring-forming section of jurisdiction, set up and hinder thick liquid and reveal the sponge strip, prevent that the thick liquid from leaking to the area of assembling in the radial 3 centimetres apart from the space that exists between the outer cambered surface of annular sealing rod on the concatenation face and section of jurisdiction, guaranteed that the grouting volume in space fills the capacity between the section of jurisdiction of cyclization and the outside soil body rather than, closely knit, the probability of cavity formation has been reduced, guaranteed that the top ground soil body can not be induced to subside because of hollow existence.
Description
Technical Field
The invention relates to a shield ring-forming duct piece in subway tunnel shield construction, in particular to a shield ring-forming duct piece capable of effectively preventing synchronous grouting slurry from leaking to an assembly area and a construction method thereof.
Background
In the subway shield construction, the whole shield machine consists of a cutter head, a front shield, a middle shield, a shield tail and rear supporting facilities; the front shield, the middle shield and the shield tail form an integral shield machine head shell, a cutter head at the most front end cuts soil to form a hollow cavity, the shield machine head shell formed by the front shield, the middle shield and the shield tail enters the hollow cavity, the shield machine head shell supports the soil outside the hollow cavity, an assembling machine in the shield tail assembles segments to form rings, the segments are sealed and grouted, the shield machine cutter head cuts the soil to continuously advance, and the ring-formed segments and the later-finished tunnel segments are connected into a whole in a circulating and reciprocating mode; the shield tail comprises a front shield, a middle shield, a shield tail shell, a shield tail grease port, a grease brush and a synchronous grouting hole, wherein equipment such as a driving motor of a cutter head is arranged in the front shield, a hydraulic oil cylinder system is arranged in the middle shield, a segment erector is arranged in the shell of the shield tail, the length of the shield tail shell is generally the width of two rings of half segments, and the inner side wall of the shield tail shell is respectively provided with the shield tail grease port, the grease brush and the synchronous grouting hole from front to back. The tunneling process of the shield tunneling machine is as follows: arranging a shield machine and a rear matching system thereof in an initial well and an underground station communicated with the initial well, arranging a shield machine head on a shield bracket in the initial well, arranging the shield machine in a matching way in a station layer of the underground station communicated with the initial well, arranging a reaction frame in the initial well, assembling negative ring segments by a shield assembling machine in a gap between the reaction frame and a shield tail, generally arranging a plurality of rings according to the distance of the initial well, and after assembling the negative ring segments, advancing the shield machine, wherein the shield machine does not perform synchronous grouting operation on the completed negative ring segments; after the segment assembly of the starting ring of the shield tunneling machine is finished, performing tunnel portal plugging treatment on the outer side of the starting ring, and plugging an annular gap between the outer side end of the starting ring and the inner side wall of the shield tail shell; when the shield machine is started to carry out the forward and backward two-ring tunneling operation, after the shield machine is started, a shield tail grease port and a grease brush in a shield tail shell start to work, an inner side annular gap between the inner side end of a starting ring and the inner side wall of the shield tail shell is blocked by grease, and after the inner side annular gap of the shield tail shell is closed by the grease, the shield machine starts a synchronous grouting system to synchronously grout a cylindrical gap formed between the outer arc surface of a starting ring pipe sheet and the inner side wall of the shield tail shell; after the shield machine finishes the second ring tunneling forwards, the shield machine stops tunneling operation, meanwhile, grouting operation of the initial ring is stopped, and the shield machine completes segment assembling of the whole tunnel in such a circulating mode. The grouting amount of each ring is determined by theoretical calculation according to the space volume of the cylindrical gap, and the grouting amount of each ring is generally 1.4-2.0 times of the space volume of the cylindrical gap; the grouting amount in the tube-shape space formed between the outer arc-shaped surface of the tube piece and the inner side wall of the shield tail shell is related to whether the space between the tube piece with the ring and the soil body on the outer side of the tube piece can be filled compactly or not, if the grouting amount is not enough, a cavity can be formed in the space, and the formed cavity can induce the settlement of the soil body on the earth surface above the cavity, therefore, in the grouting process, the sealing property of the tube-shape space is ensured, the injected slurry does not leak, and the key for ensuring the ring-forming quality of the tube piece and the ground safety is realized. In order to prevent the slurry from leaking to the inner side of the ring-forming duct piece along the radial direction in the grouting process, an annular water stop bar embedding groove is arranged on each of the four side vertical surfaces of each arc-shaped duct piece, an annular water stop bar is embedded in the annular water stop bar embedding groove to prevent the slurry from leaking to the inner side of the ring-forming duct piece along the radial direction in the grouting process, but the annular water stop bar embedding grooves arranged on the four side vertical surfaces are generally 3 cm away from the outer arc side surface of the duct piece, the inner side annular gap between the inner side end of the ring-forming duct piece and the inner side wall of the shield tail shell is sealed by grease, but the sealing grease cannot seal the radial 3 cm away gap between the annular water stop bar of the duct piece and the outer arc side surface of the duct piece, and the slurry can leak to the assembling area of the next assembling ring along the axial direction from the gap in the synchronous grouting process to cause the loss of the grouting amount of the previous ring, easily form a cavity to induce the settlement of the earth surface soil body.
Disclosure of Invention
The invention provides a shield ring-forming duct piece capable of effectively preventing synchronous grouting slurry from leaking and a construction method thereof, and solves the technical problem that slurry is easy to leak in a radial gap with the distance of 3 cm between a duct piece annular water stop strip and the outer arc side surface of the duct piece in synchronous grouting.
The invention solves the technical problems by the following technical scheme:
the general concept of the invention is: in the sealing rod outside of the concatenation face of two adjacent arc section of jurisdiction of same ring-forming section of jurisdiction, set up the sponge strip that prevents the thick liquid seepage, prevent that the thick liquid from leaking to the area of assembling in the radial 3 centimetres apart from the space that exists between the annular sealing rod on the concatenation face and the section of jurisdiction extrados, guaranteed that the grouting volume in space fills the capacity between the section of jurisdiction of cyclization and the outside soil body rather than, closely knit, the probability of cavity formation has been reduced, guaranteed that the top ground soil body can not be induced to subside because of hollow existence.
A shield ring-forming duct piece capable of effectively preventing the leakage of synchronous grouting slurry comprises a landing block arc duct piece, a right standard block arc duct piece, a left adjacent block arc duct piece, a right adjacent block arc duct piece and a wedge-shaped capping block, wherein a landing block splicing surface annular water stopping groove is arranged on four side vertical surfaces of the landing block arc duct piece, a landing block splicing surface annular water stopping strip is arranged in the landing block splicing surface annular water stopping groove, a right standard block splicing surface annular water stopping groove is arranged on four side vertical surfaces of the right standard block arc duct piece, a right standard block splicing surface annular water stopping strip is arranged in the right standard block splicing surface annular water stopping groove, a left standard block splicing surface annular water stopping groove is arranged on four side vertical surfaces of the left standard block arc duct piece, a left standard block splicing surface annular water stopping strip is arranged in the left standard block splicing surface annular water stopping groove, a right adjacent block splicing surface annular water stopping groove is arranged on four side vertical surfaces of the right adjacent block arc duct piece, a right adjacent block annular water stop strip is arranged in the right adjacent block splicing surface annular water stop groove, a left adjacent block splicing surface annular water stop groove is arranged on four side vertical surfaces of the left adjacent block arc-shaped pipe piece, a left adjacent block annular water stop strip is arranged in the left adjacent block splicing surface annular water stop groove, and a floor block right sponge grout stop strip is pasted on a radial 3 cm distance gap between the outer side edge of the floor block annular water stop strip on the floor block right splicing surface of the floor block arc-shaped pipe piece and the outer arc surface of the floor block arc-shaped pipe piece; a left sponge grout stopping strip of the landing block is stuck to a radial 3 cm-distance gap between the outer side edge of the annular water stopping strip of the landing block on the left splicing surface of the arc-shaped pipe piece of the landing block and the outer arc surface of the arc-shaped pipe piece of the landing block; sticking a right standard block sponge grout stopping strip on a radial 3-centimeter distance gap between the outer side edge of the right standard block annular water stopping strip on the right upper splicing surface of the standard block of the right standard block arc-shaped pipe piece and the outer cambered surface of the right standard block arc-shaped pipe piece; a left standard block sponge grout stopping strip is stuck to a radial 3 cm distance gap between the outer side edge of the left standard block annular water stopping strip on the upper left splicing surface of the standard block of the left standard block arc-shaped duct piece and the outer arc surface of the left standard block arc-shaped duct piece; the first ring shield constructs into a ring section of jurisdiction to the landmass arc section of jurisdiction, right standard block arc section of jurisdiction, left side adjacent block arc section of jurisdiction, right side adjacent block arc section of jurisdiction and wedge capping piece are assembled.
The structure of the right standard block sponge grout stopping strip, the structure of the left standard block sponge grout stopping strip, the structure of the floor block right sponge grout stopping strip and the structure of the floor block left sponge grout stopping strip are completely the same, the radial width of the door is 3 cm, the length of the door is the same as the width of the arc-shaped duct piece, and the height of the door is 3 cm.
A construction method of a shield-to-ring segment capable of effectively preventing leakage of synchronous grouting slurry comprises the following steps:
the method comprises the following steps that firstly, a landing block splicing surface annular water stopping groove is formed in four side vertical surfaces of a landing block arc-shaped duct piece, and a landing block annular water stopping strip is arranged in the landing block splicing surface annular water stopping groove; sticking a right sponge grout stopping strip of the floor block on a radial 3 cm distance gap between the outer side edge of the annular water stopping strip of the floor block on the right splicing surface of the floor block of the arc-shaped duct piece of the floor block and the outer arc surface of the arc-shaped duct piece of the floor block, wherein the radial width of the right sponge grout stopping strip of the floor block is 3 cm, the length of the right sponge grout stopping strip of the floor block is the same as the width of the arc-shaped duct piece of the floor block, and the height of the right sponge grout stopping strip of the floor block is 3 cm; sticking a left sponge grout stopping strip of the landing block on a radial 3 cm distance gap between the outer side edge of the annular water stopping strip of the landing block on the left splicing surface of the arc-shaped duct piece of the landing block and the outer arc surface of the arc-shaped duct piece of the landing block, wherein the radial width of the left sponge grout stopping strip of the landing block is 3 cm, the length of the left sponge grout stopping strip of the landing block is the same as the width of the arc-shaped duct piece of the landing block, and the height of the left sponge grout stopping strip of the landing block is 3 cm;
secondly, a right standard block splicing surface annular water stopping groove is formed in four side vertical surfaces of the right standard block arc-shaped duct piece, and a right standard block annular water stopping strip is arranged in the right standard block splicing surface annular water stopping groove; a right standard block sponge grout stopping strip is pasted on a radial 3 cm distance gap between the outer side edge of the right standard block annular water stopping strip on the right upper splicing surface of the standard block of the right standard block arc-shaped pipe piece and the outer arc surface of the right standard block arc-shaped pipe piece, the radial width of the right standard block sponge grout stopping strip is 3 cm, the length of the right standard block sponge grout stopping strip is the same as the width of the right standard block arc-shaped pipe piece, and the height of the right standard block sponge grout stopping strip is 3 cm;
thirdly, a left standard block splicing surface annular water stopping groove is formed in four side vertical surfaces of the left standard block arc-shaped duct piece, and a left standard block annular water stopping strip is arranged in the left standard block splicing surface annular water stopping groove; sticking a left standard block sponge grout stopping strip on a radial 3 cm distance gap between the outer side edge of a left standard block annular water stopping strip on the upper left splicing surface of a standard block of the left standard block arc-shaped pipe piece and the outer arc surface of the left standard block arc-shaped pipe piece, wherein the radial width of the left standard block sponge grout stopping strip is 3 cm, the length of the left standard block sponge grout stopping strip is the same as the width of the left standard block arc-shaped pipe piece, and the height of the left standard block sponge grout stopping strip is 3 cm;
fourthly, assembling the first ring of ground block arc-shaped pipe pieces through a shield assembling machine, assembling the right standard block arc-shaped pipe pieces and the ground block arc-shaped pipe pieces together through the shield assembling machine after the first ring of ground block arc-shaped pipe pieces are assembled in place, extruding a right sponge grout stopping strip of the ground block right by a right standard block right lower splicing surface of the right standard block arc-shaped pipe pieces to form a grout stopping strip, and filling a radial 3-centimeter distance gap outside the joint of the ground block annular water stopping strip and the right standard block annular water stopping strip with the grout stopping strip;
fifthly, splicing the left standard block arc-shaped duct piece and the landing block arc-shaped duct piece together through a shield splicing machine, extruding a left sponge grout stopping strip of the landing block by a left standard block lower left splicing surface of the left standard block arc-shaped duct piece to form a grout stopping strip, and filling a radial 3-centimeter distance gap outside the joint of the landing block annular water stopping strip and the left standard block annular water stopping strip with the grout stopping strip;
sixthly, arranging right adjacent block splicing surface annular water stopping grooves on four side vertical surfaces of the right adjacent block arc-shaped duct piece, and arranging right adjacent block annular water stopping strips in the right adjacent block splicing surface annular water stopping grooves; splicing the right adjacent block arc-shaped duct piece and the right standard block arc-shaped duct piece together by a shield splicing machine, extruding a right standard block sponge grout stopping strip by a right lower splicing surface of a right adjacent block of the right adjacent block arc-shaped duct piece to form a grout stopping strip, and filling a radial 3-centimeter gap outside the joint of the right standard block annular water stopping strip and the right adjacent block annular water stopping strip by the grout stopping strip;
seventhly, arranging a left adjacent block splicing surface annular water stopping groove on four side vertical surfaces of the left adjacent block arc-shaped pipe piece, and arranging a left adjacent block annular water stopping strip in the left adjacent block splicing surface annular water stopping groove; splicing a left adjacent block arc-shaped pipe piece and a left standard block arc-shaped pipe piece together by a shield splicing machine, extruding a left standard block sponge grout stopping strip by a left lower splicing surface of a left adjacent block of the left adjacent block arc-shaped pipe piece to form a grout stopping strip, and filling a radial 3-centimeter distance gap outside the joint of the left standard block annular water stopping strip and the left adjacent block annular water stopping strip by the grout stopping strip;
eighthly, arranging wedge-shaped top sealing block splicing surface annular water stopping grooves on four side vertical surfaces of the wedge-shaped top sealing block, and arranging wedge-shaped top sealing block annular water stopping strips in the wedge-shaped top sealing block splicing surface annular water stopping grooves; inserting the wedge-shaped capping block between the left adjacent block arc-shaped duct piece and the right adjacent block arc-shaped duct piece through a shield assembling machine to complete the assembling of the whole first-ring shield ring-forming duct piece;
ninth, starting a cutter head of the shield tunneling machine, beginning to tunnel a second ring soil body, starting a shield tail grease system of the shield tunneling machine to work, sealing an inner side annular gap formed between the inner side end of a starting ring and the inner side wall of a shield tail shell by using grease, after the sealing is finished, starting a synchronous grouting system of the shield tunneling machine to work, synchronously grouting a cylindrical gap formed between the outer arc surface of the starting ring and the inner side wall of the shield tail shell, moving the shield tail shell forwards along with the forward tunneling of the shield tunneling machine, continuously working the shield tail grease system and the synchronous grouting system in the forward moving process, stopping the forward tunneling of the shield cutter head after the shield tunneling is carried out for a ring width, simultaneously stopping the work of the shield tail grease system and the synchronous grouting system, and finishing the synchronous grouting of the first ring segments;
tenth, repeating the steps from the fourth step to the ninth step, and assembling the second ring segment; and circulating the steps until the segment assembling task of the whole shield region is completed to form the integral shield tunnel.
The sponge grout stopping strip is arranged to basically prevent the grout leakage along the axial direction of the tunnel from the radial joint surface at the outer side of the water stop ring on the joint surface between the land falling block and the standard block and the grout leakage along the axial direction of the tunnel from the radial joint surface at the outer side of the water stop ring on the joint surface between the standard block and the adjacent block; the invention effectively prevents the leakage of synchronous grouting slurry and avoids the formation of cavities between the outer arc surface of the pipe piece and the soil body to the maximum extent.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic structural view of the landing block segment 1 of the present invention in a top view;
fig. 3 is a schematic structural view of a right modular segment 8 of the present invention in a top view.
Detailed Description
The invention is described in detail below with reference to the accompanying drawings:
a shield ring-forming duct piece capable of effectively preventing the leakage of synchronous grouting slurry comprises a landing block arc duct piece 1, a right standard block arc duct piece 8, a left standard block arc duct piece 11, a left adjacent block arc duct piece 14, a right adjacent block arc duct piece 15 and a wedge-shaped capping block 16, wherein a landing block splicing surface annular water stopping groove 3 is arranged on four side vertical surfaces of the landing block arc duct piece 1, a landing block splicing surface annular water stopping strip 6 is arranged in the landing block splicing surface annular water stopping groove 3, a right standard block splicing surface annular water stopping groove is arranged on four side vertical surfaces of the right standard block arc duct piece 8, a right standard block splicing surface annular water stopping strip 9 is arranged in the right standard block splicing surface annular water stopping groove, a left standard block splicing surface annular water stopping groove is arranged on four side vertical surfaces of the left standard block arc duct piece 11, a left standard block splicing surface annular water stopping strip 12 is arranged in the left standard block splicing surface annular water stopping groove, a right adjacent block splicing surface annular water stop groove is formed in four side vertical surfaces of the right adjacent block arc-shaped duct piece 15, a right adjacent block annular water stop strip is arranged in the right adjacent block splicing surface annular water stop groove, a left adjacent block splicing surface annular water stop groove is formed in four side vertical surfaces of the left adjacent block arc-shaped duct piece 14, a left adjacent block annular water stop strip is arranged in the left adjacent block splicing surface annular water stop groove, and a landing block right sponge grout stop strip 4 is pasted on a radial 3-centimeter distance gap between the outer side edge of a landing block annular water stop strip 6 on a landing block right splicing surface 2 of the landing block arc-shaped duct piece 1 and the outer arc surface of the landing block arc-shaped duct piece; a left sponge grout stop strip 7 of the landing block is stuck to a radial 3 cm-distance gap between the outer side edge of the annular water stop strip 6 of the landing block on the left splicing surface 5 of the arc-shaped duct piece 1 of the landing block and the outer arc surface of the arc-shaped duct piece of the landing block; a right standard block sponge grout stopping strip 10 is adhered to a radial 3-centimeter distance gap between the outer side edge of the right standard block annular water stopping strip 9 on the right upper splicing surface of the standard block of the right standard block arc-shaped duct piece 8 and the outer cambered surface of the right standard block arc-shaped duct piece; a left standard block sponge grout stopping strip 13 is adhered to a radial 3 cm-distance gap between the outer side edge of a left standard block annular water stopping strip 12 on the upper left splicing surface of the standard block of the left standard block arc-shaped duct piece 11 and the outer arc surface of the left standard block arc-shaped duct piece; the first ring shield ring-forming duct piece is formed by splicing a land falling block arc duct piece 1, a right standard block arc duct piece 8, a left standard block arc duct piece 11, a left adjacent block arc duct piece 14, a right adjacent block arc duct piece 15 and a wedge-shaped capping block 16.
The structure of the right standard block sponge grout stopping strip 10, the structure of the left standard block sponge grout stopping strip 13, the structure of the floor block right sponge grout stopping strip 4 and the structure of the floor block left sponge grout stopping strip 7 are completely the same, the radial width of the door is 3 cm, the length of the door is the same as the width of the arc-shaped duct piece, and the height of the door is 3 cm.
A construction method of a shield-to-ring segment capable of effectively preventing leakage of synchronous grouting slurry comprises the following steps:
firstly, arranging ground block splicing surface annular water stopping grooves 3 on four side vertical surfaces of a ground block arc-shaped duct piece 1, and arranging ground block annular water stopping strips 6 in the ground block splicing surface annular water stopping grooves 3; a landing block right sponge grout stopping strip 4 is stuck to a radial 3 cm-distance gap between the outer side edge of a landing block annular water stopping strip 6 on a landing block right splicing surface 2 of a landing block arc-shaped duct piece 1 and the outer arc surface of the landing block arc-shaped duct piece, the radial width of the landing block right sponge grout stopping strip 4 is 3 cm, the length of the landing block right sponge grout stopping strip 4 is the same as the width of the landing block arc-shaped duct piece 1, and the height of the landing block right sponge grout stopping strip 4 is 3 cm; a landing block left sponge grout stopping strip 7 is stuck to a radial 3 cm distance gap between the outer side edge of a landing block annular water stopping strip 6 on the left splicing surface 5 of the landing block arc-shaped duct piece 1 and the outer arc surface of the landing block arc-shaped duct piece, the radial width of the landing block left sponge grout stopping strip 7 is 3 cm, the length of the landing block left sponge grout stopping strip 7 is the same as the width of the landing block arc-shaped duct piece 1, and the height of the landing block left sponge grout stopping strip 7 is 3 cm;
secondly, a right standard block splicing surface annular water stopping groove is formed in four side vertical surfaces of the right standard block arc-shaped duct piece 8, and a right standard block annular water stopping strip 9 is arranged in the right standard block splicing surface annular water stopping groove; a right standard block sponge grout stopping strip 10 is pasted on a radial 3 cm distance gap between the outer side edge of a right standard block annular water stopping strip 9 on the right upper splicing surface of the standard block of the right standard block arc-shaped duct piece 8 and the outer arc surface of the right standard block arc-shaped duct piece, the radial width of the right standard block sponge grout stopping strip 10 is 3 cm, the length of the right standard block sponge grout stopping strip 10 is the same as the width of the right standard block arc-shaped duct piece 8, and the height of the right standard block sponge grout stopping strip 10 is 3 cm;
thirdly, a left standard block splicing surface annular water stopping groove is formed in four side vertical surfaces of the left standard block arc-shaped duct piece 11, and a left standard block annular water stopping strip 12 is arranged in the left standard block splicing surface annular water stopping groove; a left standard block sponge grout stopping strip 13 is pasted on a radial 3 cm distance gap between the outer side edge of a left standard block annular water stopping strip 12 on the upper left splicing surface of a standard block of a left standard block arc-shaped pipe piece 11 and the outer arc surface of the left standard block arc-shaped pipe piece, the radial width of the left standard block sponge grout stopping strip 13 is 3 cm, the length of the left standard block sponge grout stopping strip 13 is the same as the width of the left standard block arc-shaped pipe piece 11, and the height of the left standard block sponge grout stopping strip 13 is 3 cm;
fourthly, assembling the first annular floor block arc-shaped duct piece 1 through a shield assembling machine, splicing the right standard block arc-shaped duct piece 8 and the floor block arc-shaped duct piece 1 together through the shield assembling machine after the assembly is in place, extruding a floor block right sponge grout stop strip 4 by a right standard block right lower splicing surface of the right standard block arc-shaped duct piece 8 to form a grout stop strip, and filling a radial 3 cm-distance gap outside the joint of the floor block annular water stop strip 6 and the right standard block annular water stop strip 9 with the grout stop strip;
fifthly, splicing the left standard block arc-shaped duct piece 11 and the land falling block arc-shaped duct piece 1 together through a shield splicing machine, extruding a left sponge grout stopping strip 7 of the land falling block by a left standard block lower left splicing surface of the left standard block arc-shaped duct piece 11 to form a grout stopping strip, and filling a radial 3 cm-distance gap outside the joint of the land falling block annular water stopping strip 6 and the left standard block annular water stopping strip 12 with the grout stopping strip;
sixthly, arranging right adjacent block splicing surface annular water stopping grooves on four side vertical surfaces of the right adjacent block arc-shaped duct piece 15, and arranging right adjacent block annular water stopping strips in the right adjacent block splicing surface annular water stopping grooves; splicing a right adjacent block arc-shaped duct piece 15 and a right standard block arc-shaped duct piece 8 together by a shield splicing machine, extruding a right standard block sponge grout stopping strip 10 by a right lower splicing surface of the right adjacent block arc-shaped duct piece 15 to form a grout stopping strip, and filling a radial 3-centimeter gap outside the joint of a right standard block annular water stopping strip 9 and the right adjacent block annular water stopping strip by the grout stopping strip;
seventhly, arranging a left adjacent block splicing surface annular water stopping groove on four side vertical surfaces of the left adjacent block arc-shaped duct piece 14, and arranging a left adjacent block annular water stopping strip in the left adjacent block splicing surface annular water stopping groove; splicing a left adjacent block arc-shaped duct piece 14 and a left standard block arc-shaped duct piece 11 together by a shield splicing machine, extruding a left standard block sponge grout stopping strip 13 by a left lower splicing surface of the left adjacent block arc-shaped duct piece 14 to form a grout stopping strip, and filling a radial 3-centimeter gap outside the joint of the left standard block annular water stopping strip 12 and the left adjacent block annular water stopping strip by the grout stopping strip;
eighthly, arranging wedge-shaped top sealing block splicing surface annular water stopping grooves on four side vertical surfaces of the wedge-shaped top sealing block 16, and arranging wedge-shaped top sealing block annular water stopping strips in the wedge-shaped top sealing block splicing surface annular water stopping grooves; inserting a wedge-shaped top sealing block 16 between a left adjacent block arc-shaped duct piece 14 and a right adjacent block arc-shaped duct piece 15 through a shield assembling machine to complete assembling of the whole first-ring shield ring-forming duct piece;
ninth, starting a cutter head of the shield tunneling machine, beginning to tunnel a second ring soil body, starting a shield tail grease system of the shield tunneling machine to work, sealing an inner side annular gap formed between the inner side end of a starting ring and the inner side wall of a shield tail shell by using grease, after the sealing is finished, starting a synchronous grouting system of the shield tunneling machine to work, synchronously grouting a cylindrical gap formed between the outer arc surface of the starting ring and the inner side wall of the shield tail shell, moving the shield tail shell forwards along with the forward tunneling of the shield tunneling machine, continuously working the shield tail grease system and the synchronous grouting system in the forward moving process, stopping the forward tunneling of the shield cutter head after the shield tunneling is carried out for a ring width, simultaneously stopping the work of the shield tail grease system and the synchronous grouting system, and finishing the synchronous grouting of the first ring segments;
tenth, repeating the steps from the fourth step to the ninth step, and assembling the second ring segment; and circulating the steps until the segment assembling task of the whole shield region is completed to form the integral shield tunnel.
Claims (2)
1. A shield ring-forming duct piece capable of effectively preventing the leakage of synchronous grouting slurry comprises a landing block arc duct piece (1), a right standard block arc duct piece (8), a left standard block arc duct piece (11), a left adjacent block arc duct piece (14), a right adjacent block arc duct piece (15) and a wedge-shaped top sealing block (16), wherein a landing block splicing surface annular water stopping groove (3) is arranged on four side vertical surfaces of the landing block arc duct piece (1), a landing block annular water stopping strip (6) is arranged in the landing block splicing surface annular water stopping groove (3), a right standard block splicing surface annular water stopping groove is arranged on four side vertical surfaces of the right standard block arc duct piece (8), a right standard block annular water stopping strip (9) is arranged in the right standard block splicing surface annular water stopping groove, a left standard block splicing surface annular water stopping groove is arranged on four side vertical surfaces of the left standard block arc duct piece (11), a left standard block annular water stop strip (12) is arranged in the left standard block splicing surface annular water stop groove, a right adjacent block splicing surface annular water stop groove is arranged on four side vertical surfaces of a right adjacent block arc-shaped pipe piece (15), a right adjacent block annular water stop strip is arranged in the right adjacent block splicing surface annular water stop groove, a left adjacent block splicing surface annular water stop groove is arranged on four side vertical surfaces of a left adjacent block arc-shaped pipe piece (14), and a left adjacent block annular water stop strip is arranged in the left adjacent block splicing surface annular water stop groove; the anti-blocking and anti-blocking device is characterized in that a right sponge grout stopping strip (4) of the floor block is adhered to a radial 3-centimeter gap between the outer side edge of an annular water stopping strip (6) of the floor block on the right splicing surface (2) of the floor block arc-shaped duct piece (1) and the outer arc surface of the floor block arc-shaped duct piece; a left sponge grout stopping strip (7) of the landing block is stuck to a radial 3 cm-distance gap between the outer side edge of the annular water stopping strip (6) of the landing block on the left splicing surface (5) of the arc-shaped duct piece (1) of the landing block and the outer arc surface of the arc-shaped duct piece of the landing block; a right standard block sponge grout stopping strip (10) is adhered to a radial 3 cm-distance gap between the outer side edge of a right standard block annular water stopping strip (9) on the right upper splicing surface of the standard block of the right standard block arc-shaped duct piece (8) and the outer arc surface of the right standard block arc-shaped duct piece; a left standard block sponge grout stopping strip (13) is stuck to a radial 3 cm-distance gap between the outer side edge of a left standard block annular water stopping strip (12) on the upper left splicing surface of the standard block of the left standard block arc-shaped duct piece (11) and the outer arc surface of the left standard block arc-shaped duct piece; the first ring shield ring-forming duct piece is formed by assembling a land falling block arc duct piece (1), a right standard block arc duct piece (8), a left standard block arc duct piece (11), a left adjacent block arc duct piece (14), a right adjacent block arc duct piece (15) and a wedge-shaped capping block (16).
2. The shield-tunneling-ring-forming duct piece capable of effectively preventing the leakage of synchronous grouting slurry according to claim 1, wherein the structure of the right standard block sponge slurry-stopping strip (10), the structure of the left standard block sponge slurry-stopping strip (13), the structure of the landing block right sponge slurry-stopping strip (4) and the structure of the landing block left sponge slurry-stopping strip (7) are completely the same, the radial width of the door is 3 cm, the length of the door is the same as the width of the arc-shaped duct piece, and the height of the door is 3 cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920480430.6U CN209959255U (en) | 2019-04-10 | 2019-04-10 | Shield ring-forming duct piece capable of effectively preventing leakage of synchronous grouting slurry |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920480430.6U CN209959255U (en) | 2019-04-10 | 2019-04-10 | Shield ring-forming duct piece capable of effectively preventing leakage of synchronous grouting slurry |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209959255U true CN209959255U (en) | 2020-01-17 |
Family
ID=69240971
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920480430.6U Active CN209959255U (en) | 2019-04-10 | 2019-04-10 | Shield ring-forming duct piece capable of effectively preventing leakage of synchronous grouting slurry |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209959255U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110005425A (en) * | 2019-04-10 | 2019-07-12 | 中铁十九局集团轨道交通工程有限公司 | The shield cyclization section of jurisdiction that simultaneous grouting slurry can be effectively prevent to leak and building method |
-
2019
- 2019-04-10 CN CN201920480430.6U patent/CN209959255U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110005425A (en) * | 2019-04-10 | 2019-07-12 | 中铁十九局集团轨道交通工程有限公司 | The shield cyclization section of jurisdiction that simultaneous grouting slurry can be effectively prevent to leak and building method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| LU101102B1 (en) | Machine Non-Excavation Advancing Apparatus | |
| CN106948833A (en) | Pin-connected panel service channel structure and its construction method | |
| CN107605498B (en) | Construction method for horizontal grouting reinforcement structure of end head of shield tunnel in water-rich sandy pebble stratum | |
| CN102587928B (en) | Complete equipment for construction of annular cutting arching pre-support tunnel | |
| CN109707388B (en) | Method for preventing ground collapse when shield tunneling machine starts to pass through existing shield tunnel | |
| CN103821539A (en) | Shield tunneling machine shield tail synchronous embedded-type double-liquid grouting device | |
| CN106759262A (en) | The continuous sawing grooving of ground-connecting-wall synchronously irrigates wall-forming device and construction method | |
| CN209959255U (en) | Shield ring-forming duct piece capable of effectively preventing leakage of synchronous grouting slurry | |
| CN105041327A (en) | Subsurface tunnel reverse shield receiving method | |
| CN110985014A (en) | Method for preventing shield tail leakage | |
| US3708984A (en) | Tunnel liner jacking system and method | |
| CN110005425A (en) | The shield cyclization section of jurisdiction that simultaneous grouting slurry can be effectively prevent to leak and building method | |
| CN109268042A (en) | A kind of small pilot tunnel leading support equipment and construction method | |
| CN203499695U (en) | Reinforcing structure for shallow-buried tunnel in bustling urban area | |
| CN109869160B (en) | Device for starting shield tunneling machine | |
| CN209115129U (en) | A kind of small pilot tunnel leading support equipment | |
| CN212837841U (en) | Shield tunnel segment wall post-grouting combined structure | |
| CN113622930B (en) | Slurry balance shield tunnel entering and exiting construction method | |
| US3818713A (en) | Driving of tunnels | |
| US3616650A (en) | Method and apparatus for constructing subterranean structures | |
| CN202500575U (en) | Complete device for construction of annular cutting arch-forming pre-supporting tunnel | |
| CN210768784U (en) | External sealing structure for tunnel boring machine | |
| US3950956A (en) | Driving of tunnels | |
| CN217055173U (en) | Primary and secondary heading machine | |
| CN117287220B (en) | Subway interval tunnel assembled pump room and construction method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |