CN1693668A

CN1693668A - Counter pulling method used in underground pipe culvert linear dark digging

Info

Publication number: CN1693668A
Application number: CN 200510026870
Authority: CN
Inventors: 姚宪平; 曹文宏
Original assignee: Shanghai Tunnel Engineering and Rail Transit Design and Research Institute
Current assignee: Shanghai Tunnel Engineering and Rail Transit Design and Research Institute
Priority date: 2005-06-17
Filing date: 2005-06-17
Publication date: 2005-11-09
Anticipated expiration: 2025-06-17
Also published as: CN100425802C

Abstract

This invention relates to a opposite draw method used in underground pipe culvert linear dark digging. The two headpieces at pre-dug pipe and culvert are opposite drawn and they are connected to back to make the two lateral headpieces and standard pipe culvert socket continuously, coupled and oppositely go forward until contact is finished. The advantage is that two headpieces opposite come forward, the pulling force is uniform, departure well don't need provide against force, so it can adapt more engineering occasions. Soil pressure balance of working face is kept by continuous working of the cable wire, and little friction force is needed to conquer when propulsion is continuous. Lateral resistance and tunneling power are both halved, so the tunneling speed is fast. It is propitious to straight line tunnel guide, the working efficiency is high, equipment investment is few and equipment occupying is few.

Description

Be used for underground pipe culvert linear dark digging to pulling method

Technical field

The present invention relates to tunnel-like, relate to concretely a kind of be used for underground pipe culvert linear dark digging to pulling method.

Background technology

The tunneling of buried pipe of the prior art, culvert normally at one end is provided with received well, the other end is provided with Starting Well, big stroke jack group is set in Starting Well, the stroke of this jack group is consistent with standard pipe culvert pipe joint usually, need to do the recoil in the Starting Well and reinforce, to provide jacking the omnidistance needed power of sentencing the accuser to the punishment facing the person he falsely accused.During construction, utilize the thrust of jack group, head (the positive soil pressure effect of soil, guiding and balance of cutting is arranged) and standard pipe culvert pipe joint are thereafter ejected Starting Well, enter the stratum, the jack group that bounces back then adds follow-up standard pipe culvert pipe joint, ejects again, circulation enters received well until head, pipe culvert tube coupling so one by one.The shortcoming of this tunneling method is: Starting Well need be done the recoil and reinforce; Need big stroke jack group; Shrinking back the jack group when placing follow-up pipe culvert tube coupling, and work plane has the anxiety of the earth pressure balance of losing, and easily causes the ground surface sedimentation; The collateral resistance scope is big, is interrupted to advance, and need overcome bigger stiction; Jack-in process needs accurately guiding, can guarantee that just tube coupling enters received well.

Summary of the invention

The objective of the invention is according to above-mentioned the deficiencies in the prior art part, provide a kind of be applicable to short-distance and medium-distance, be used for underground pipe culvert linear dark digging to pulling method, this method adopts drawing two heads that are positioned at the two ends of desiring tunneling pipe, culvert to reach the method for the pipe culvert tube coupling after being connected separately, the head that makes both sides and standard pipe culvert pipe joint along axis direction continuously, in pairs, march forward are mutually finished until butt joint.

The object of the invention realizes being finished by following technical scheme:

A kind of be used for underground pipe culvert linear dark digging to pulling method, adopt following steps: at first one Starting Well respectively is set at the two ends of tunneling pipe culvert; Bore technology with orientation, prolong the engineering axis direction, between the Starting Well at two ends, execute and draw the cable wire group; Connect head (cutting the positive soil pressure effect of soil, guiding and balance) respectively at the two ends of cable wire group, wherein the cable wire group cooperates with head is movable, have at least an end to adopt punching jack and incidental cable wire self-locking device on each root cable wire, save at the head back at two ends tube connector culvert pipe power to be provided and to realize spacingly; The unidirectional continuous pulling force that utilizes the reciprocating motion of jack to produce to the cable wire group, with the both sides head and the pipe culvert tube coupling after being connected continuously, in pairs, in opposite directions to drawing in into the stratum, wherein utilize Starting Well to be unearthed; After the both sides head is met and discussed, utilize default structure, finish butt joint.

Have at least an end to adopt punching jack and incidental cable wire self-locking device on each above-mentioned root cable wire power to be provided and to realize spacing, can refer to wherein has an end to adopt punching jack and cable wire self-locking device power to be provided and to realize spacingly, and it is spacing that the other end adopts the cable wire anchor head to realize; Also can be all to adopt punching jack and cable wire self-locking device at two ends power to be provided and to realize spacing.

Above-mentioned jack group can be selected short stroke jack group for use.

Above-mentioned cable wire self-locking device is to utilize to carve the self-lock mechanism of arranging before and after the type moveable anchor group, the reciprocating motion of jack is become the one-way movement of cable wire.

Advantage of the present invention is, two heads march forward mutually, and tension equalizer need not provide the power of sentencing the accuser to the punishment facing the person he falsely accused by Starting Well, can adapt to more project situation; Cable wire tension elastic deformation, jack reach the continuous operation of subsidiary cable wire self-locking device, make work plane remain earth pressure balance, and propelling only need overcome less kinetic force of friction continuously; Owing to be that the two sides is tunneled simultaneously, collateral resistance scope and driving power are all reduced by half, and two work planes and two unearthed spaces, driving speed is accelerated; The existence of drawing cable wire is also helped straight line driving guiding; Owing to adopted the cable wire self-locking device, replace the interruption work of big stroke jack group with the continuous operation of short stroke jack group, improved operating efficiency, reduced the equipment input, reduced equipment occupation space.

Description of drawings

Accompanying drawing 1 is prior art floor map of the present invention;

Accompanying drawing 2 is the technology of the present invention floor map (before setting out);

Accompanying drawing 3 is the technology of the present invention floor map (on the way);

Accompanying drawing 4 is the cable wire self-locking device schematic diagram of jack of the present invention;

Accompanying drawing 5 is practical example sectional drawing of the present invention (1) (two ends are provided with Starting Well);

Accompanying drawing 6 is practical example sectional drawing of the present invention (2) (directed boring drawn cable wire);

Accompanying drawing 7 is practical example sectional drawing of the present invention (3) (entering the stratum to drawing steel case tube coupling);

Accompanying drawing 8 is practical example sectional drawing of the present invention (4) (casting reinforced concrete structure in the steel case);

The specific embodiment

Feature of the present invention and other correlated characteristic are described in further detail by embodiment below in conjunction with accompanying drawing, so that technician's of the same trade understanding:

Shown in Fig. 1-8, label 1-24 represents respectively: Starting Well I1, standard pipe culvert pipe joint 2, cable wire anchor head 3, head/work plane 4, do not dig stratum 5, the subsidiary short stroke punching jack 6 that the cable wire self-locking device is arranged, standard pipe culvert pipe joint 7, Starting Well II8, engineering axis 9, space I10 is unearthed, cable wire 11, space II12 is unearthed, frame 13, carve type moveable anchor group 14, short stroke jack 15, received well 16, Starting Well 17, the recoil reinforces 18, unearthed space 19, big stroke jack 20, excavate soil body scope 21, speedway 22, horizontal directional drill straw line 23, deformation joint 24.

Embodiment 1:

The job site of present embodiment is the speedway below of the gradient 4.5%, and about 80 meters to the scope of drawing, adopt following step: (1) at first respectively is provided with a Starting Well at the two ends of tunneling pipe culvert, is Starting Well I1, Starting Well II8; (2) at Starting Well I1 horizontal directional drill straw line, promptly prolong the engineering axis direction, execute between Starting Well I1 and Starting Well II8 and draw the cable wire group, this cable wire group is made up of many cable wires 11; (3) connect head 4 respectively at the two ends of cable wire group, cable wire group and 4 movable cooperations of head, end at each root cable wire 11 adopts jack 6 and subsidiary cable wire self-locking device promptly to carve type moveable anchor group 14 power to be provided and to realize spacing, it is spacing that the other end adopts cable wire anchor head 3 to realize, head 4 back at two ends connect standard pipe

culvert pipe joint

2,7 respectively; (4) utilize the self-lock mechanism of carving type moveable anchor group 14, make the unidirectional continuous pulling force of the reciprocating motion generation of jack 6 to the cable wire group, with both sides head 4 and the pipe

culvert tube coupling

2,7 after being connected separately continuously, in pairs, in opposite directions to drawing in into the stratum, wherein utilize Starting Well I1, Starting Well II8 to be unearthed; (5) after both sides head 4 is met and discussed, utilize default structure, finish butt joint.

Embodiment 2:

The job site of present embodiment is the speedway below of the gradient 4.5%, and about 80 meters to the scope of drawing, adopt following step: (1) at first respectively is provided with a Starting Well at the two ends of tunneling pipe culvert, is Starting Well I1, Starting Well II8; (2) at Starting Well I1 horizontal directional drill straw line, promptly prolong the engineering axis direction, execute between Starting Well I1 and Starting Well II8 and draw the cable wire group, this cable wire group is made up of many cable wires 11; (3) connect head 4 respectively at the two ends of cable wire group, adopt jack 6 and subsidiary cable wire self-locking device promptly to carve type moveable anchor group 14 power to be provided and to realize spacingly at the two ends of cable wire 11, head 4 back at two ends are connected with standard pipe

culvert pipe joint

2,7 respectively; (4) utilize the self-lock mechanism of carving type moveable anchor group 14, make the unidirectional continuous pulling force to the cable wire group of the reciprocating motion generation of jack 6, pipe

culvert tube coupling

2,7 with both sides head 4 and after being connected in pairs, in opposite directions, continuously to drawing in into the stratum, wherein utilize Starting Well I1, Starting Well II8 to be unearthed; (5) after both sides head 4 is met and discussed, utilize default structure, finish butt joint.

The purpose that two of cable wire terminations are provided with position-limit mechanism respectively in the cable wire group in the present embodiment is to make the two ends head axially can only be forward along cable wire in the termination of cable wire, can not move backward and cause head and cable wire disengaging, and can realize the transmission of power between cable wire and the head.

The selection that those skilled in the art will recognize that head among the present invention can determine according to concrete strata condition, as grid type, earth pressure balanced etc.

Obviously, the selection of cable wire quantity can be determined according to actual needs in the cable wire group, does not repeat them here.

Claims

1, a kind of be used for underground pipe culvert linear dark digging to pulling method, it is characterized in that adopting following steps: at first one Starting Well respectively is set at the two ends of tunneling pipe culvert; Bore technology with orientation, prolong the engineering axis direction, between the Starting Well at two ends, execute and draw the cable wire group; Two ends in the cable wire group connect head respectively, wherein the cable wire group cooperates with head is movable, have at least an end to have the punching jack of cable wire self-locking device to be connected in the cable wire group on each root cable wire with subsidiary, that is to say to have at least an end to adopt punching jack and incidental cable wire self-locking device on each root cable wire, save at the head back at two ends tube connector culvert pipe power to be provided and to realize spacingly; The unidirectional continuous pulling force that utilizes the reciprocating motion of jack to produce to the cable wire group, with the both sides head and the pipe culvert tube coupling after being connected continuously, in pairs, in opposite directions to drawing in into the stratum, wherein utilize Starting Well to be unearthed; After the both sides head is met and discussed, utilize default structure, finish butt joint.

2, according to claim 1 a kind of be used for underground pipe culvert linear dark digging to pulling method, it is characterized in that having at least on described each root cable wire an end to adopt punching jack and incidental cable wire self-locking device power to be provided and to realize spacing, referring to what have wherein that an end adopts is punching jack and cable wire self-locking device power to be provided and to realize spacingly, and it is spacing that the other end adopts the cable wire anchor head to realize.

3, according to claim 1 a kind of be used for underground pipe culvert linear dark digging to pulling method, it is characterized in that having at least on described each root cable wire an end to adopt punching jack and incidental cable wire self-locking device power to be provided and to realize spacingly, the two ends that refer to cable wire can all adopt punching jack and incidental cable wire self-locking device power to be provided and to realize spacing.

4, according to claim 1 a kind of be used for underground pipe culvert linear dark digging to pulling method, it is characterized in that described jack group can select short stroke jack group for use.