WO2023025325A1 - 地下小空间波纹管利用轨道滑车穿越管道施工方法 - Google Patents

地下小空间波纹管利用轨道滑车穿越管道施工方法 Download PDF

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Publication number
WO2023025325A1
WO2023025325A1 PCT/CN2022/115834 CN2022115834W WO2023025325A1 WO 2023025325 A1 WO2023025325 A1 WO 2023025325A1 CN 2022115834 W CN2022115834 W CN 2022115834W WO 2023025325 A1 WO2023025325 A1 WO 2023025325A1
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Prior art keywords
bellows
rail
pipe
pipeline
square
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Ceased
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PCT/CN2022/115834
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English (en)
French (fr)
Inventor
王义平
李英男
尹苏江
顾博
郭云鹏
张凤谦
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China Railway No 9 Group Co Ltd
Fourth Engineering Co Ltd of China Railway No 9 Group Co Ltd
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China Railway No 9 Group Co Ltd
Fourth Engineering Co Ltd of China Railway No 9 Group Co Ltd
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Priority to GB2303552.0A priority Critical patent/GB2619996B/en
Publication of WO2023025325A1 publication Critical patent/WO2023025325A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F16L55/16—Devices for covering leaks in pipes or hoses, e.g. hose-menders
    • F16L55/162—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe
    • F16L55/165—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe a pipe or flexible liner being inserted in the damaged section
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
    • F16L1/024—Laying or reclaiming pipes on land, e.g. above the ground
    • F16L1/028—Laying or reclaiming pipes on land, e.g. above the ground in the ground
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
    • F16L1/024—Laying or reclaiming pipes on land, e.g. above the ground
    • F16L1/028—Laying or reclaiming pipes on land, e.g. above the ground in the ground
    • F16L1/032—Laying or reclaiming pipes on land, e.g. above the ground in the ground the pipes being continuous
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
    • F16L1/024—Laying or reclaiming pipes on land, e.g. above the ground
    • F16L1/028—Laying or reclaiming pipes on land, e.g. above the ground in the ground
    • F16L1/036—Laying or reclaiming pipes on land, e.g. above the ground in the ground the pipes being composed of sections of short length
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
    • F16L1/024—Laying or reclaiming pipes on land, e.g. above the ground
    • F16L1/06—Accessories therefor, e.g. anchors

Definitions

  • the invention belongs to the technical field of pipeline installation, and in particular relates to a construction method for a bellows in a small underground space to pass through the pipeline by using a rail pulley.
  • Pipe jacking construction is a popular underground pipeline construction method at present. It does not need to excavate the surface layer. The noise during construction is much lower than that of slotted pipelines, and it has little impact on ground settlement. In the case of deep pipeline buried The construction cost is better than the construction method of slotting and laying pipelines. At present, some pipelines have two layers of pipes with different diameters inside and outside to form casings to ensure the overall quality of the pipeline.
  • the space between the launching shaft and the receiving shaft on both sides of the pipe jacking is relatively narrow, and it is inconvenient to arrange winches and jacks and other equipment on the construction site, and because some internal pipes are HDPE corrugated pipes, the interface is relatively fragile, and the hoist cannot be used Dragging, and the pipe wall is thin, so jacks cannot be used for direct jacking, and the overall construction process is relatively cumbersome.
  • the object of the present invention is to provide a construction method for corrugated pipes in small underground spaces to pass through pipes using rail pulleys, so as to at least solve the problems of difficulty and low efficiency in passing through pipes in small underground construction spaces.
  • the present invention provides the following technical solutions:
  • a construction method for corrugated pipes in a small underground space using a rail trolley to cross the pipeline characterized in that the construction method includes the following steps:
  • Step 1 jacking the outer layer pipeline to complete the pipe jacking construction of the outer layer pipeline;
  • Step 2 laying tracks inside the outer layer pipeline
  • Step 3 make a plurality of track tackles according to the size of the laid track
  • Step 4 a plurality of rail tackles are evenly arranged on the bottom of the bellows, and the rail sliders and the bellows are fixed together, and then the rail sliders with the bellows are installed on the track;
  • Step 5 the corrugated pipe passes through the outer pipe
  • step 2 along the extension direction of the outer pipe, a plurality of square timbers are erected at equal intervals inside the outer pipe, and the extension direction of the square timbers is perpendicular to the extension direction of the outer pipeline; rails are laid on the square timbers, and the extension direction of the rails is parallel In the extension direction of the outer pipe;
  • the track is made of angle steel, and a pair of angle steel is laid parallel to each other on the square wood; the sharp corner of the angle steel faces upward, and the opening of the angle steel faces downward and is buckled on the square wood;
  • the two adjacent angle steels are fixed by steel bars;
  • the rail trolley includes at least two beams and two side supports, the side supports are perpendicular to the beams, the upper sides of a plurality of beams are respectively fixedly connected to the side supports, and any adjacent two beams equally spaced;
  • Two roller skates are arranged on the lower part of the frontmost and rearmost beams in the rail block, and the distance between the two pulleys is equal to the transverse distance between two adjacent angle steels;
  • the crossbeam adopts square steel pipe, and the width of the square steel pipe along the extension direction of the bellows is not greater than the extension width of the groove on the outer wall of the bellows, and is not less than three quarters of the groove width;
  • the distance between two adjacent square tubes is not greater than the radius of the bellows, and not less than two-thirds of the radius of the bellows;
  • the pulley is a V-shaped wheel, and the diameter of the V-shaped wheel is not less than the width of the square steel pipe, and is not greater than twice the width of the square steel pipe; the height of the angle steel is not less than the depth of the V-shaped groove of the V-shaped wheel, and the angle steel is embedded in the V-shaped groove. The depth is not less than two-thirds of the groove depth of the V-shaped wheel;
  • step 4 the bellows and the rail block are fixed together by passing the wire through the inside of the square steel pipe and wrapping around the outer wall of the bellows.
  • Fig. 1 is the schematic cross-sectional view of a rail block and a corrugated pipe passing through an outer pipeline in Embodiment 1 of the present invention
  • Fig. 2 is a schematic diagram of moving the bellows driven by a fixed pulley and a crane in Embodiment 1 of the present invention
  • Fig. 3 is a top view of the rail trolley in Embodiment 2 of the present invention.
  • the present invention provides a construction method for corrugated pipes in a small underground space to pass through the pipes using rail pulleys.
  • the construction method includes the following steps:
  • Step 1 jacking the outer pipeline 1 to complete the pipe jacking construction of the outer pipeline 1.
  • Step 2 laying tracks inside the outer pipeline 1 .
  • a plurality of square timbers 3 are erected at equal intervals inside the outer layer pipeline 1, and the extension direction of the square timbers 3 is perpendicular to the extension direction of the outer layer pipeline 1; rails are laid on the square timbers 3, and the tracks
  • the direction of extension is parallel to the direction of extension of the outer pipe 1.
  • a concrete cushion can be constructed inside the outer pipe 1, so that a smooth cushion plane is formed inside the outer pipe 1, and then the square wood 3 is installed on the cushion plane, and the square wood 3 is installed on the square.
  • the track is laid on the wood 3 so that the bottom of the square wood 3 is not suspended; not only can the track be able to withstand a greater force, but also after the bellows 2 passes through the outer pipe 1, it is necessary to pay attention to the space between the bellows 2 and the outer pipe 1.
  • the grout, the pre-constructed concrete cushion reduces the amount of grouting in the subsequent grouting construction, and further improves the construction efficiency.
  • the track extends out of the outer layer pipe 1, so that the rail trolley equipped with the bellows 2 is placed on the track.
  • the track is laid outside the outer layer pipeline 1, so that the rail trolley equipped with the bellows 2 can be placed on the track outside the outer layer pipeline 1, and the space outside the outer layer pipeline 1 is larger, which is more convenient for operation.
  • the track is made of angle steel 4, and a pair of angle steel 4 is laid parallel to each other on the square wood 3;
  • the steel bars are fixed, and the steel bars are set above the square wood 3, and the steel bars and the square wood 3 are bound together by iron wires. Since there is a larger overlapping part between the steel bars and the square wood 3, the track and the square wood 3 can be carried out more firmly. fixed.
  • the two ends of the reinforcement are respectively welded to the angle steel 4 on both sides, so that the overall structural strength of the track can be enhanced.
  • Step 3 according to the size of the laid track, make a plurality of rail blocks;
  • the rail block includes a crossbeam 6, and two pulleys are arranged at the bottom of the crossbeam 6, and the distance between the two pulleys is equal to that of two adjacent angle steels 4
  • the lateral spacing between them; side supports 7 are fixed on both sides of the upper part of the cross beam 6, the middle part of the side support 7 is fixedly connected with one side of the cross beam 6, the side support 7 is perpendicular to the cross beam 6, and the extension direction of the side support 7 is parallel to the corrugation Axis of tube 2.
  • the rail block includes at least two crossbeams 6 and two side supports 7, the side supports 7 are perpendicular to the crossbeams 6, and the upper two sides of a plurality of crossbeams 6 are respectively fixedly connected to the side supports 7 , the spacing of any adjacent two crossbeams 6 is equal; the bottom of the most forward and rearmost crossbeam 6 in the rail block is provided with two roller skates, and the spacing of the two pulleys is equal to the transverse spacing between the adjacent two angle steels 4.
  • Side support 7 adopts steel bar.
  • the crossbeam 6 adopts square steel pipes, and the width of the square steel pipes along the extension direction of the bellows 2 is not greater than the extension width of the groove on the outer wall of the bellows 2, and is not less than three quarters of the width of the groove; the distance between two adjacent square pipes is not more than
  • the radius of the corrugated pipe 2 is not less than two-thirds of the radius of the corrugated pipe 2;
  • the pulley is a V-shaped wheel 5, and the diameter of the V-shaped wheel 5 is not less than the width of the square steel pipe, and is not greater than twice the width of the square steel pipe;
  • the angle steel The height of 4 is not less than the depth of the V-shaped groove of the V-shaped wheel 5, and the depth of the angle steel 4 embedded in the V-shaped groove is not less than two-thirds of the depth of the groove of the V-shaped wheel 5.
  • the crossbeam 6 can be stuck in the groove of the outer wall of the bellows 2, so that the relative movement between the bellows 2 and the rail trolley along the extending direction of the bellows 2 can be limited.
  • Step 4 evenly arrange a plurality of rail trolleys on the bottom of the bellows 2, fix the rail trolleys and the bellows 2 together, and then place the rail trolleys equipped with the bellows 2 on the track.
  • the bellows 2 and the rail block are fixed together by a wire passing through the inside of the square steel pipe and wrapping around the outer wall of the bellows 2 .
  • the bellows 2 is better fixed on the rail trolley, thereby preventing the bellows 2 from rolling sideways.
  • Step 5 using the fixed pulley 9 and the crane 11 to drive the corrugated pipe 2 through the outer pipe 1 .
  • a fixed pulley 9 is arranged on the left and right sides of the outlet of the outer pipe 1, and a circle of flexible straps 8 is bound to the front of the bellows 2. While the flexible straps 8 firmly fix the bellows 2, No damage will be done to the bellows 2 .
  • One end of the two traction ropes 10 is tied to the middle positions of the left and right sides of the flexible strap 8 respectively.
  • the traction rope 10 uses a steel wire rope, which is wear-resistant and has high strength and can withstand a large force; the left and right sides
  • the traction rope 10 passes through the fixed pulleys 9 on the left and right sides respectively, and the force direction of the traction rope 10 is changed from the horizontal direction to the vertical direction through the fixed pulley 9, and then the traction ropes 10 on the left and right sides converge to the hook of the crane 11
  • the hook of the crane 11 drives the traction rope 10 to move in the vertical direction, thereby pulling the corrugated pipe 2 to move in the horizontal direction, so that the corrugated pipe 2 passes through the outer pipe 1 .
  • the outer layer pipeline 1 adopts reinforced concrete pipeline, and the connection mode between two adjacent reinforced concrete pipelines is a flexible steel socket socket connection;
  • the corrugated pipe 2 adopts two polyethylene corrugated pipes, and two adjacent The corrugated pipe 2 adopts hot-melt connection.
  • the corrugated pipe 2 has a single length of 10m.
  • the corrugated pipe 2 is crossed and connected in sections. After the previous section is connected and crossed, the next section is connected. In order to reduce construction difficulty, improve construction efficiency, and reduce construction investment.
  • the corrugated pipe 2 passes through the outer pipe 1, there are two cases. If the track is recovered, when the closed water test is performed, the water between the corrugated pipe 2 and the outer pipe 1 is filled, and the corrugated pipe 2 floats. At this time, the track is recovered, which realizes the recovery and reuse of the track, and saves the construction cost. If the track is not recovered, in the case of short-distance bellows 2 crossing, the cost of making the track using angle steel 4 is relatively low. Good support ensures that the bellows 2 is at the center of the outer pipe 1, which is convenient for subsequent grouting construction.
  • rail pulleys are used to allow the bellows to pass through the outer pipes, which saves a lot of energy compared with the construction of hoisting machines in the prior art. It shortens the installation and commissioning time of the equipment, reduces the interference to the surrounding environment, saves the construction cost, reduces the construction difficulty, improves the construction efficiency, and reduces the construction investment; it can save the construction period and reduce the active area.

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Abstract

一种地下小空间波纹管利用轨道滑车穿越管道施工方法，该施工方法包括以下步骤：步骤1，顶进外层管道（1），完成外层管道的顶管施工；步骤2，在外层管道的内部铺设轨道；步骤3，根据铺设轨道的尺寸，制作多个轨道滑车；步骤4，将多个轨道滑车均匀布置在波纹管（2）的底部，并将轨道滑车与波纹管固定在一起，然后将安装有波纹管的轨道滑车放置在轨道上；步骤5，波纹管穿越外层管道。该施工方法采用轨道滑车使波纹管穿越外层管道，节约了设备的安装调试时间和施工成本，降低了施工难度，提高了施工效率，减少了施工投入，能节约工期、减少作用面积。

Description

地下小空间波纹管利用轨道滑车穿越管道施工方法 技术领域
本发明属于管道安装技术领域，具体涉及地下小空间波纹管利用轨道滑车穿越管道施工方法。
背景技术
顶管施工是目前较为普及的一种地下管道施工方法，它不需要开挖面层，施工时噪音远小于开槽敷设管道，且对地面沉降影响较小，而在管线埋设较深的情况下施工成本优于开槽敷设管道的施工方法。目前部分管道有内外两层不同管径的管道，形成套管，来保证管道整体质量。在一些特定情况下，顶管两侧始发井与接收井内的空间较为狭小，施工现场不方便布置卷扬机及千斤顶等设备，而且因部分内部管道为HDPE波纹管，接口较为脆弱，无法采用卷扬机进行拖拽，且管壁较薄，不能采用千斤顶直接顶进，整体施工工艺较为繁琐。
发明内容
本发明的目的在于提供地下小空间波纹管利用轨道滑车穿越管道施工方法，以至少解决目前地下狭小施工空间施工管道穿越较为困难、效率低下等问题。
为了实现上述目的，本发明提供如下技术方案：
1.地下小空间波纹管利用轨道滑车穿越管道施工方法，其特征在于，所述施工方法包括以下步骤：
步骤1，顶进外层管道，完成外层管道的顶管施工；
步骤2，在外层管道的内部铺设轨道；
步骤3，根据铺设轨道的尺寸，制作多个轨道滑车；
步骤4，将多个轨道滑车均匀布置在波纹管的底部，并将轨道滑车与波 纹管固定在一起，然后将安装有波纹管的轨道滑车放置在轨道上；
步骤5，波纹管穿越外层管道；
在步骤2中，沿外层管道的延伸方向，在外层管道内部等间距架设多个方木，方木延伸方向垂直于外层管道的延伸方向；在方木上铺设轨道，轨道的延伸方向平行于外层管道的延伸方向；
轨道采用角钢制作，一对角钢相互平行铺设在方木上；角钢的尖角部朝上，角钢的开口朝向下扣在方木上；
相邻的两角钢之间利用钢筋固定；
所述轨道滑车包括至少两个横梁与两个侧支撑，所述侧支撑垂直于所述横梁，多个所述横梁的上部两侧分别与所述侧支撑固定连接，任意相邻的两横梁的间距相等；
在轨道滑车中最前方与最后方横梁的下部均设置有两个轮滑，两个滑轮的间距等于相邻两角钢之间的横向间距；
横梁采用方形钢管，所述方形钢管沿波纹管延伸方向的宽度不大于波纹管外壁凹槽的延伸向宽度，同时不小于凹槽宽度的四分之三；
相邻两方形管的间距不大于波纹管的半径，同时不小于波纹管半径的三分之二；
滑轮为V型轮，V型轮的直径不小于方形钢管的宽度，且不大于方形钢管宽度的二倍；角钢的高度不小于V型轮的V型槽的深度，且角钢嵌入V型槽的深度不小于V型轮凹槽深度的三分之二；
采用定滑轮及起重机的方式带动波纹管道移动；
在外层管道出口的左右两侧各设置一个定滑轮，在波纹管的前部捆绑一圈柔性绑带，两根牵引绳的一端分别绑扎在柔性绑带左右两侧的中部位置，左右两侧的牵引绳分别穿过左右两侧的定滑轮，通过定滑轮将牵引绳受力方向有水平方向改为竖直方向；左右两侧的牵引绳汇聚到起重机的吊钩上，通过起重机吊钩带动牵引绳进行竖直方向的位移，从而牵引波纹管沿水平方向移动；
在步骤4中，通过线穿过方形钢管的内部并环绕波纹管外壁一周，将波纹管与轨道滑车固定在一起。
有益效果：采用轨道滑车使波纹管穿越外层管道，大大节约了设备的安 装调试时间，节约了施工成本，降低施工难度，提高施工效率，减少施工投入；能节约工期、减少作用面积。
附图说明
图1为本发明实施例1中轨道滑车及波纹管穿越外层管道的横截面示意图；
图2为本发明实施例1中通过定滑轮与起重机带动波纹管移动的示意图；
图3为本发明实施例2中轨道滑车的俯视图。
图中：1、外层管道；2、波纹管；3、方木；4、角钢；5、V型轮；6、横梁；7、侧支撑；8、柔性绑带；9、定滑轮；10、牵引绳；11、起重机。
具体实施方式
根据本发明的具体实施例，如图1-2所示，本发明提供一种地下小空间波纹管利用轨道滑车穿越管道施工方法，施工方法包括以下步骤：
步骤1，顶进外层管道1，完成外层管道1的顶管施工。
步骤2，在外层管道1的内部铺设轨道。具体的，沿外层管道1的延伸方向，在外层管道1内部等间距架设多个方木3，方木3延伸方向垂直于外层管道1的延伸方向；在方木3上铺设轨道，轨道的延伸方向平行于外层管道1的延伸方向。
在本实施例中，在铺设方木3之前，可在外层管道1内部施工混凝土垫层，使得外层管道1内部形成平整的垫层平面，然后在垫层平面上安装方木3，在方木3上铺设轨道，使得方木3下方不悬空；不仅能够保证轨道能够承受更大的作用力，而且在波纹管2穿越外层管道1之后，需要波纹管2与外层管道1之间注浆，预先施工的混凝土垫层，减小了后续注浆施工中的注浆量，进一步提高了施工效率。
轨道延伸出外层管道1，以便于将安装有波纹管2的轨道滑车放置在轨道上。
轨道铺设在外层管道1之外，从而能够在外层管道1之外，将安装有波纹管2的轨道滑车放置在轨道上，外层管道1之外空间更大，更加便于操作。
轨道采用角钢4制作，一对角钢4相互平行铺设在方木3上；角钢4的尖角部朝上，角钢4的开口朝向下扣在方木3上；相邻的两角钢4之间利用 钢筋固定，钢筋设置方木3上方，通过铁线将钢筋与方木3捆扎在一起，由于钢筋与方木3之间具有更大的重合部分，从而使得轨道与方木3能够更加牢固的进行固定。
在本实施例中，钢筋的两端分别焊接在两侧的角钢4上，从而能够加强轨道的整体结构强度。
在本实施例中，当波纹管2直径较小时，使用普通PE波纹管2即可；当波纹管2的管径较大时，波纹管2采用HDPE钢带波纹管2，HDPE钢带波纹管2具有更高的强度。
步骤3，根据铺设轨道的尺寸，制作多个轨道滑车；在本实施例中，轨道滑车包括一个横梁6，在横梁6的下部设置有两个滑轮，两个滑轮的间距等于相邻两角钢4之间的横向间距；在横梁6的上部两侧均固定有侧支撑7，侧支撑7的中部与横梁6一侧固定连接，侧支撑7垂直于横梁6，侧支撑7的延伸方向平行于波纹管2的轴线。
在实施例2中，如图2所示，轨道滑车包括至少两个横梁6与两个侧支撑7，侧支撑7垂直于横梁6，多个横梁6的上部两侧分别与侧支撑7固定连接，任意相邻的两横梁6的间距相等；在轨道滑车中最前方与最后方横梁6的下部均设置有两个轮滑，两个滑轮的间距等于相邻两角钢4之间的横向间距。
侧支撑7采用钢筋。横梁6采用方形钢管，方形钢管沿波纹管2延伸方向的宽度不大于波纹管2外壁凹槽的延伸向宽度，同时不小于凹槽宽度的四分之三；相邻两方形管的间距不大于波纹管2的半径，同时不小于波纹管2半径的三分之二；滑轮为V型轮5，V型轮5的直径不小于方形钢管的宽度，且不大于方形钢管宽度的二倍；角钢4的高度不小于V型轮5的V型槽的深度，且角钢4嵌入V型槽的深度不小于V型轮5凹槽深度的三分之二。
从而使得横梁6能够卡在波纹管2外壁的凹槽之中，从而能够限制波纹管2与轨道滑车之间沿波纹管2延伸方向的相对移动。
步骤4，将多个轨道滑车均匀布置在波纹管2的底部，并将轨道滑车与波纹管2固定在一起，然后将安装有波纹管2的轨道滑车放置在轨道上。在本实施例中，通过线穿过方形钢管的内部并环绕波纹管2外壁一周，将波纹管2与轨道滑车固定在一起。使得波纹管2更好的固定在轨道滑车上，从而 防止波纹管2发生侧向翻滚。
步骤5，采用定滑轮9及起重机11的方式带动波纹管2穿越外层管道1。
在本实施例中，在外层管道1出口的左右两侧各设置一个定滑轮9，在波纹管2的前部捆绑一圈柔性绑带8，柔性绑带8在牢固固定波纹管2的同时，还不会对波纹管2造成损伤。两根牵引绳10的一端分别绑扎在柔性绑带8左右两侧的中部位置，本实施例中，牵引绳10使用钢丝绳，钢丝绳耐磨且强度高，能够承受较大的作用力；左右两侧的牵引绳10分别穿过左右两侧的定滑轮9，通过定滑轮9将牵引绳10受力方向有水平方向改为竖直方向，然后左右两侧的牵引绳10汇聚到起重机11的吊钩上，通过起重机11吊钩带动牵引绳10进行竖直方向的位移，从而牵引波纹管2沿水平方向移动，实现波纹管2穿越外层管道1。
在本实施例中，外层管道1采用钢筋混凝土管道，相邻两个钢筋混凝土管道之间的连接方式为柔性钢承口承插连接；波纹管2采用聚乙烯波纹管2道，相邻两个波纹管2采用热熔连接。波纹管2单根长度10m，波纹管2分段进行穿越并连接，待前一段连接完成并穿越后再进行下一段连接，为降低施工难度，提高施工效率，减少施工投入。
在波纹管2完成穿越外层管道1后，分两种情况，若对轨道进行回收时，在做闭水试验时，波纹管2与外层管道1之间充水，波纹管2漂浮起来，此时回收轨道，实现了轨道的回收再利用，节省了施工成本。若不对轨道进行回收时，在短距离波纹管2穿越情况下，轨道使用角钢4制作本身成本较低，此时波纹管2架设在轨道上进行后续的注浆作业，能够使得波纹管2得到较好的支撑，保证波纹管2处于外层管道1内部中心位置，便于后续的注浆施工。
综上所述，本发明提供的地下小空间波纹管利用轨道滑车穿越管道施工方法的技术方案中，采用轨道滑车使波纹管穿越外层管道，与现有技术中采用卷扬机施工相比，大大节约了设备的安装调试时间，减少了对周围环境的干扰，节约了施工成本，降低施工难度，提高施工效率，减少施工投入；能节约工期、减少作用面积。
可以理解的是，以上描述仅为示例性的，本申请实施例对此并不进行限定。

Claims (3)

  1. 地下小空间波纹管利用轨道滑车穿越管道施工方法，其特征在于，所述施工方法包括以下步骤：
    步骤1，顶进外层管道，完成外层管道的顶管施工；
    步骤2，在外层管道的内部铺设轨道；
    步骤3，根据铺设轨道的尺寸，制作多个轨道滑车；
    步骤4，将多个轨道滑车均匀布置在波纹管的底部，并将轨道滑车与波纹管固定在一起，然后将安装有波纹管的轨道滑车放置在轨道上；
    步骤5，波纹管穿越外层管道；
    在步骤2中，沿外层管道的延伸方向，在外层管道内部等间距架设多个方木，方木延伸方向垂直于外层管道的延伸方向；在方木上铺设轨道，轨道的延伸方向平行于外层管道的延伸方向；
    轨道采用角钢制作，一对角钢相互平行铺设在方木上；角钢的尖角部朝上，角钢的开口朝向下扣在方木上；
    相邻的两角钢之间利用钢筋固定；
    所述轨道滑车包括至少两个横梁与两个侧支撑，所述侧支撑垂直于所述横梁，多个所述横梁的上部两侧分别与所述侧支撑固定连接，任意相邻的两横梁的间距相等；
    在轨道滑车中最前方与最后方横梁的下部均设置有两个轮滑，两个滑轮的间距等于相邻两角钢之间的横向间距；
    横梁采用方形钢管，所述方形钢管沿波纹管延伸方向的宽度不大于波纹管外壁凹槽的延伸向宽度，同时不小于凹槽宽度的四分之三；
    相邻两方形管的间距不大于波纹管的半径，同时不小于波纹管半径的三分之二；
    滑轮为V型轮，V型轮的直径不小于方形钢管的宽度，且不大于方形钢管宽度的二倍；角钢的高度不小于V型轮的V型槽的深度，且角钢嵌入V型槽的深度不小于V型轮凹槽深度的三分之二；
    采用定滑轮及起重机的方式带动波纹管道移动；
    在外层管道出口的左右两侧各设置一个定滑轮，在波纹管的前部捆绑一圈柔性绑带，两根牵引绳的一端分别绑扎在柔性绑带左右两侧的中部位置， 左右两侧的牵引绳分别穿过左右两侧的定滑轮，通过定滑轮将牵引绳受力方向有水平方向改为竖直方向；左右两侧的牵引绳汇聚到起重机的吊钩上，通过起重机吊钩带动牵引绳进行竖直方向的位移，从而牵引波纹管沿水平方向移动；
    在步骤4中，通过线穿过方形钢管的内部并环绕波纹管外壁一周，将波纹管与轨道滑车固定在一起。
  2. 根据权利要求1所述的地下小空间波纹管利用轨道滑车穿越管道施工方法，其特征在于，轨道延伸出所述外层管道，以便于将安装有波纹管的轨道滑车放置在轨道上。
  3. 根据权利要求1或2任一所述的地下小空间波纹管利用轨道滑车穿越管道施工方法，其特征在于，外层管道采用钢筋混凝土管道，相邻两个钢筋混凝土管道之间的连接方式为柔性钢承口承插连接；
    波纹管采用聚乙烯波纹管道，相邻两个波纹管采用热熔连接。
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