CN104071720A - In-tunnel turn-over method of super-large diameter penstock - Google Patents

In-tunnel turn-over method of super-large diameter penstock Download PDF

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Publication number
CN104071720A
CN104071720A CN201410305926.1A CN201410305926A CN104071720A CN 104071720 A CN104071720 A CN 104071720A CN 201410305926 A CN201410305926 A CN 201410305926A CN 104071720 A CN104071720 A CN 104071720A
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CN
China
Prior art keywords
penstock
groups
anchors
super
anchor
Prior art date
Application number
CN201410305926.1A
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Chinese (zh)
Inventor
成自飞
王文忠
成杰
关文洲
叶卫国
谢从英
郭艳萍
Original Assignee
葛洲坝集团第二工程有限公司
Priority date (The priority date 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 date listed.)
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Application filed by 葛洲坝集团第二工程有限公司 filed Critical 葛洲坝集团第二工程有限公司
Priority to CN201410305926.1A priority Critical patent/CN104071720A/en
Publication of CN104071720A publication Critical patent/CN104071720A/en

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Abstract

The invention relates to an in-tunnel turn-over method of a super-large diameter penstock. The in- tunnel turn-over method of the super-large diameter penstock comprises determining three groups of lifting point positions at intersection of a penstock conveying hole and a penstock water intake tunnel to perform local expanding excavation, mounting three groups of overhead anchors and pulley blocks at the positions of the three groups of lifting points, with the position corresponding to an inscribed equilateral triangle of the penstock to be turned over as the mounting position of the three groups of overhead anchors and the pulley blocks, and then correspondingly arranging three groups of ground anchors and winches below the three groups of overhead anchors, wherein every group of earth anchors and the overhead anchor and the pulley blocks are integrally connected respectively through steel wires and the corresponding winches, three groups of anchors and pulley blocks jointly lift the super-large diameter penstock, two groups of overhead anchors and the pulley blocks lift the height of the penstock, the other group of overhead anchor and the pulley block lower down the height of the penstock, when the penstock is turned over and is in a vertical state, the other group of anchor lifting point is dismounted, and the turn-over construction of the super-large diameter penstock is completed. The in-tunnel turn-over method of the super-large diameter penstock can avoid safety ricks and improve work efficiency.

Description

Turn-over method in super-large diameter penstock hole

technical field:

The present invention be applicable to super-large diameter penstock hole, power station in turn-over method relevant, special and flat section of penstock, curved segment turn-over method are relevant.

background technology:

At present, in super-large diameter penstock hole, power station, installation generally adopts " vertical " to carry out over-the-road transportation, by steel pipe transmission hole, is transported to the installation of directly unloading behind installation position.But " vertical " transportation exists overturning, collision etc. to cause the larger security risk of tube coupling deformation effect installation quality, separately need have special requirement to the height in steel pipe transmission hole, give the transportation of super-large diameter penstock, install and bring certain difficulty.

If super-large diameter penstock adopts " flat fortune ", general Hydropower Station Construction props up the requirement that hole size all can meet " flat fortune ", but still the problem that exists super-large diameter penstock to lift by crane in hole, stand up.

summary of the invention:

The object of the invention is the problem in order to solve lifting in power station super-large diameter penstock " flat fortune " hole, to stand up, turn-over method in a kind of super-large diameter penstock hole of evading security risk, raising work efficiency is provided.

The object of the present invention is achieved like this:

Turn-over method in super-large diameter penstock of the present invention hole, the method is to determine three groups of hoisting point positions in steel pipe transmission hole and steel pipe water leading cylinder infall, at three groups of hoisting point positions, carrying out part digs, dig height=steel pipe height+sky anchor height+steel rope, assembly pulley height+480~550mm, three groups of sky anchors and assembly pulley are installed, take in penstock to be stood up and connect equilateral triangle opposite position as three groups of sky anchors and assembly pulley installation site, then below three groups of sky anchors, correspondence is installed three groups of earth anchors and winch, each is organized earth anchor and by steel rope, is linked to be integral body with corresponding winch and day anchor and assembly pulley respectively, three groups of sky anchors and assembly pulley lift by crane super-large diameter penstock jointly, wherein two groups of sky anchors and assembly pulley adherence pressure steel pipe height, another group day anchor and assembly pulley are transferred penstock suspension centre height, until steel pipe complete stand up after after vertical state, dismantle another group day anchor suspension centre, complete the construction of standing up of super-large diameter penstock.

Turn-over method in super-large diameter penstock of the present invention hole is tried out in obtained effective enforcement in the pressure steel pipe of hydropower station installation of rock beach, respond well.If flat section steel pipe adopts " vertical " transportation under Yan Tan power station, outside steel pipe transmission hole size cannot be transported, in hole, also cannot carry out steel pipe and unload, lower flat section of penstock installation cannot be carried out; Adopt in hole of the present invention turn-over method to transport hole and diversion tunnel crown digs 1.1 ten thousand yuan of generation expenses, day anchor, earth anchor are installed 0.8 ten thousand yuan, winch, assembly pulley and are installed approximately 5.6 ten thousand yuan, amount to and drop into 7.5 ten thousand yuan.

The inventive method adopts a day anchor suspension centre to coordinate a winch to stand up construction to steel pipe, can efficiently solve without lifting appliance in the hole in or be not easy to the penstock that lifting appliance lifts to lift, stand up construction; Stand up process steadily, safely, efficiently, can improve penstock installation efficiency, reduce labour intensity, simple to operate, can guarantee to greatest extent that penstock stands up in process indeformable, improve installation quality.

accompanying drawing explanation:

Fig. 1 is the inventive method detail of construction.

Fig. 2 is the birds-eye view of Fig. 1.

Fig. 3 is assembly pulley arrangement plan.

Fig. 4 is that penstock stands up site plan.

Fig. 5 is that penstock stands up another location figure.

the specific embodiment:

Referring to Fig. 1~Fig. 5, turn-over method in the present embodiment super-large diameter penstock hole, the method is to determine three groups of hoisting point positions in steel pipe transmission hole 1 and penstock diversion tunnel 2 infalls, at three groups of hoisting point positions, carry out part and dig, dig height=steel pipe height+sky anchor height+steel rope, assembly pulley height+500mm.At three groups of hoisting point positions, 1# days anchors and assembly pulley 3,2# days anchor and assembly pulley 4,3# days anchor and assembly pulleys 5 are installed, take in penstock to be stood up and connect equilateral triangle opposite position as three groups of sky anchors and assembly pulley installation site.Then corresponding 1# earth anchor and leading sheave 6 and 1# winch 7,2# earth anchor and leading sheave 8 and 2# winch 9,3# earth anchor and leading sheave 10 and the 3# winch 11 installed below 1# days anchors, 2# days anchor, 3# days anchor.1# earth anchor and leading sheave connect into integral body by steel rope and 1# winch and 1# days anchors and assembly pulley.2# earth anchor and leading sheave connect into integral body by steel rope and 2# winch and 2# days anchors and assembly pulley.3# earth anchor and leading sheave connect into integral body by steel rope and 3# winch and 3# days anchors and assembly pulley.Three groups of sky anchors and assembly pulley lift by crane super-large diameter penstock jointly, 1# and 2# days anchor adherence pressure steel pipe height wherein, within 3# days, anchor is transferred penstock suspension centre height (Fig. 4), until steel pipe, complete and stand up after vertical state (Fig. 5), dismantle 3# days anchor suspension centres, complete the construction of standing up of super-large diameter penstock.In Fig. 1~Fig. 5, sequence number 12,13 is respectively penstock, part digs line.

Winch is bought off-the-shelf hardware, generally to move (determining) pulley wiring multiplying power, select 3 winchs that meet rated load, guarantee the normal work of elevator function and operation, winch basis needs embedded foundation anchor pole that winch is fixedly secured, and winch is electric meets relevant regulations requirement; 3 winch positions as shown in Figure 1.

It anchor: adopt 3 * Φ 36mm screw-thread steel to enter rock 6m, after day anchor installation, carry out mortar rockfill grouting and loaded test.Main Function is to carry out hoisting construction as assembly pulley hanging point, assembly pulley: buy finished product, main earth anchor steel rope and the steel pipe suspension centre steel rope of connecting, assembly pulley is divided into fixed (moving) pulley, mainly change direction and the laborsaving reduction winch load of inotropic action, day anchor and assembly pulley installation site are as shown in Figure 1, Figure 2, Figure 3 shows.

Earth anchor: adopt 3 * Φ 36mm screw-thread steel to enter rock 3m, after earth anchor installation, carry out mortar rockfill grouting and loaded test.Main work will be passed to a day anchor assembly pulley after steel wire rope of windlass pulling force guiding, and earth anchor installation site as shown in Figure 1 and Figure 2.

Tube coupling heavy 30t, high 2000mm, diameter 12500mm; The construction of unloading, overturn of lower flat section steel pipe transmission hole and diversion tunnel.

Turn-over method step following (referring to Fig. 1~Fig. 5) in the present embodiment super-large diameter penstock hole:

(1) first three groups of hoisting point positions of steel pipe transmission hole and steel pipe water leading cylinder infall are carried out to part and dig, dig height=steel pipe height+sky anchor height+steel rope, assembly pulley height+500mm.At three groups of hoisting point positions, three groups of sky anchors and assembly pulley are installed, take in steel pipe to be stood up and connect equilateral triangle opposite position as anchor installation site, three groups of skies, as shown in Figure 1, then below three groups of sky anchors, correspondence is installed three groups of earth anchors and winch, each is organized earth anchor and by steel rope, is linked to be integral body with corresponding winch and day anchor and assembly pulley respectively, three groups of sky anchors and assembly pulley lift by crane super-large diameter penstock jointly, 1# wherein, 2# days anchors and assembly pulley adherence pressure steel pipe height, 3# days anchors and assembly pulley are transferred steel pipe suspension centre height, until steel pipe complete stand up after after vertical state, dismantle 3# days anchor suspension centres, complete the construction of standing up of super-large diameter penstock.Diversion tunnel crown digs, and a day anchor, earth anchor, winch are installed, then by steel wire rope of windlass by earth anchor by the steel rope on sky anchor by required baudrier wear around.

(2) utilize flat truck by super-large diameter penstock by steel pipe transmission hole be transported to diversion tunnel crossover sites sky anchor under, the assembly pulley and the steel pipe that three groups of sky anchors are connected by steel wire rope of windlass are reliably fixed; Carry out steel pipe and unload and promote 3 groups of steel wire rope of windlass, slowly improve 1#, 2# winch and assembly pulley height, slowly below 3# winch and assembly pulley height, steel pipe is slowly tilted, until steel pipe, after vertical state, dismounting 3# winch and assembly pulley lifting, carry out penstock installation construction.

(3) all after penstock installations, removes 3# days anchors, winch, assembly pulley, reserved 1#, 2# days anchor, winch, assembly pulley gather together and save installation; Gather together after joint installation, successively each parts such as 1#, 2# days anchor, winch, assembly pulley are removed to recycle again.

Above-described embodiment is that foregoing of the present invention is further described, but this should be interpreted as to the scope of the above-mentioned theme of the present invention only limits to above-described embodiment.All technology realizing based on foregoing all belong to scope of the present invention.

Claims (1)

1. turn-over method in super-large diameter penstock hole, the method is to determine three groups of hoisting point positions in steel pipe transmission hole and steel pipe diversion tunnel infall, at three groups of hoisting point positions, carrying out part digs, dig height=steel pipe height+sky anchor height+steel rope, assembly pulley height+480~550mm, at three hoisting point positions, three groups of sky anchors and assembly pulley are installed, take in penstock to be stood up and connect equilateral triangle opposite position as three groups of sky anchors and assembly pulley installation site, then below three groups of sky anchors, correspondence is installed three groups of earth anchors and winch, each is organized earth anchor and by steel rope, is linked to be integral body with corresponding winch and day anchor and assembly pulley respectively, three groups of sky anchors and assembly pulley lift by crane super-large diameter penstock jointly, wherein two groups of sky anchors and assembly pulley adherence pressure steel pipe height, another group day anchor and assembly pulley are transferred penstock suspension centre height, until penstock, complete and stand up after vertical state, dismantle another group day anchor suspension centre, complete the construction of standing up of super-large diameter penstock.
CN201410305926.1A 2014-07-01 2014-07-01 In-tunnel turn-over method of super-large diameter penstock CN104071720A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104627879A (en) * 2015-01-30 2015-05-20 中国葛洲坝集团股份有限公司 Winch overhead anchor pulley hoisting system in underground cavern and simulation method of winch overhead anchor pulley hoisting system
CN105645294A (en) * 2015-12-30 2016-06-08 华北冶建工程建设有限公司 Hoisting device for T-shaped stage or piston rack of Wiggins gas holder and formation method of T-shaped stage or piston rack of Wiggins gas holder
CN106957007A (en) * 2017-04-24 2017-07-18 中国葛洲坝集团第工程有限公司 A kind of super-large diameter penstock equipment for supporting patient with burn and turn-over method
CN107588233A (en) * 2017-08-09 2018-01-16 中国水利水电第七工程局有限公司 A kind of installation method of super large caliber penstock in inclined shaft lower horizontal section

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1601083A1 (en) * 1988-05-25 1990-10-23 Ленинградская лесотехническая академия им.С.М.Кирова Hydraulic tackle block
US7631854B1 (en) * 2009-02-23 2009-12-15 Andrew Mountain Horizontal bicycle storage hoist
CN201785162U (en) * 2010-09-09 2011-04-06 中国十五冶金建设有限公司 Pull pole hoist for arc gird
CN202542770U (en) * 2012-04-28 2012-11-21 中国葛洲坝集团股份有限公司 Tube joint turning over device of pressure steel tube in hole chamber
CN103277582A (en) * 2013-05-15 2013-09-04 中国葛洲坝集团股份有限公司 Method for mounting inclined shaft internal pressure steel tube
CN103574158A (en) * 2013-11-19 2014-02-12 葛洲坝集团第二工程有限公司 Super-large diameter pressure steel tube inclined shaft three-hanging-point installation method

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1601083A1 (en) * 1988-05-25 1990-10-23 Ленинградская лесотехническая академия им.С.М.Кирова Hydraulic tackle block
US7631854B1 (en) * 2009-02-23 2009-12-15 Andrew Mountain Horizontal bicycle storage hoist
CN201785162U (en) * 2010-09-09 2011-04-06 中国十五冶金建设有限公司 Pull pole hoist for arc gird
CN202542770U (en) * 2012-04-28 2012-11-21 中国葛洲坝集团股份有限公司 Tube joint turning over device of pressure steel tube in hole chamber
CN103277582A (en) * 2013-05-15 2013-09-04 中国葛洲坝集团股份有限公司 Method for mounting inclined shaft internal pressure steel tube
CN103574158A (en) * 2013-11-19 2014-02-12 葛洲坝集团第二工程有限公司 Super-large diameter pressure steel tube inclined shaft three-hanging-point installation method

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104627879A (en) * 2015-01-30 2015-05-20 中国葛洲坝集团股份有限公司 Winch overhead anchor pulley hoisting system in underground cavern and simulation method of winch overhead anchor pulley hoisting system
CN105645294A (en) * 2015-12-30 2016-06-08 华北冶建工程建设有限公司 Hoisting device for T-shaped stage or piston rack of Wiggins gas holder and formation method of T-shaped stage or piston rack of Wiggins gas holder
CN106957007A (en) * 2017-04-24 2017-07-18 中国葛洲坝集团第工程有限公司 A kind of super-large diameter penstock equipment for supporting patient with burn and turn-over method
CN107588233A (en) * 2017-08-09 2018-01-16 中国水利水电第七工程局有限公司 A kind of installation method of super large caliber penstock in inclined shaft lower horizontal section

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Application publication date: 20141001

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