574459 A7 _________B7_ ρΐΓ、發明説明（1 ) 技藝領域 本發明涉及一種建築上使用的灌漿裝置及其相應的 施工方法特別疋一種關於利用高強度玻璃纖維塑膠（FRp) 注入管的多段灌漿裝置及施工方法。也就是說，關於，在 薄弱的衝積土或含有沙土的的風化岩及斷裂岩石層上撅鑿 1¾道或斜面時，為了防止地下水流人減少因挖掘引起的地 質鬆懈，利用FRP灌漿方法加強固定鬆懈的地層，增加地 質支持力的裝置及方法。 背景技藝 最近在城市地下建築現場，為了提高地下建築物的安 全性防止對附近建築物的損害，採取地下挖掘輔助方法。 為了防止地下水流入和加強建築物的安全，採用防水灌漿 ί口強化«方法。-般’地下挖掘時採用的辅助方法是以 鋼管保強型多段灌漿方法為代表。 現有的鋼管保強多段灌漿方法，通常以鑽孔眼、插入 ㈣、充填及封閉、«等順序，主制於鬆懈風化層的 保強和防水工程。挖掘隧道或斜面之前，沿著隧道和斜面 的曲面，鑽直徑為125mm的孔眼。鑽完孔眼後，把設有喷 射口和防逆流裝置橡皮套的小口徑鋼管，按一定規袼用其 連接管相接，插入到孔眼|。插入鋼管後為了防止灌聚材 | 料逆流和露出，在鋼管和孔眼間隙注入填充材料，然後進 I 行封閉。然後為了多段灌漿，在鋼管内塞入填充器，由内 至J外移動填充裔的同時，利用噴射口進行多段灌漿。 如上所述的現有的鋼管強化多段灌漿方法存在著下 本紙張尺度緖準_ A4規格（21GX297公爱) —~ -574459 A7 _________B7_ ρΐΓ, description of the invention (1) Technical Field The present invention relates to a grouting device used in construction and a corresponding construction method thereof, particularly a multi-stage grouting device and construction method using a high-strength glass fiber plastic (FRp) injection pipe. . In other words, in order to prevent groundwater flow and reduce the geological slackness caused by excavation when weaving 1¾ lanes or slopes on weak alluvial soil or weathered rocks and fractured rock layers containing sandy soil, we use FRP grouting method to strengthen Device and method for fixing loose stratum and increasing geological support. BACKGROUND ART Recently at underground construction sites in cities, in order to improve the safety of underground buildings and prevent damage to nearby buildings, underground excavation assistance methods have been adopted. In order to prevent the inflow of groundwater and enhance the safety of buildings, waterproof grouting is used to strengthen the method. -General 'The auxiliary method used in underground excavation is represented by the steel pipe multi-section grouting method. The existing multi-stage grouting method for steel pipe strength, usually in the order of drilling, inserting concrete, filling and closing, «, etc., is mainly made in the strength and waterproof engineering of loose weathering layers. Before digging a tunnel or slope, drill a 125mm diameter hole along the curved surface of the tunnel and slope. After drilling the holes, connect the small-diameter steel pipe with the injection port and the rubber sleeve of the anti-backflow device according to certain rules, and insert it into the hole | After inserting the steel pipe, in order to prevent the backflow and exposure of the polymer material, the filling material is injected into the gap between the steel pipe and the eyelet, and then closed. Then, for multi-stage grouting, the filler is inserted into the steel pipe, and the filler is moved from the inside to the outside, and the multi-stage grouting is performed by using the injection port. As mentioned above, the existing steel pipe reinforced multi-stage grouting method exists as follows: A4 size (21GX297 public love) — ~-
(請先閲讀背面之注意事項再填寫本頁) 0! 574459 、發明説明 (請先閲讀背面之注意事項再填寫本頁) 題。第-，使用的材料是鋼管，因此若未完全被 2而接觸到地内壁時，鋼管引㈣蚀而不能成為永久性 /化材料。第二’完成„後為了進行下—次挖掘時， ^割地面露出部分時需要很長的時間。H據地質狀 二陡道端面的大小，要保強的深度增深，鋼管的重量也 隨著增大’因此把鋼管插人孔眼時存在著❹困難。第四， 插入鋼管後因自重，孔眼㈣和射接财能灌漿而降低 灌漿效果。第五，注人時因噴射口^；能全部開放，存在注 入分佈不均句等缺點。 發明内容 ··- 本發明的目的是提供一種可以有效解決上述問題的 多段灌漿裝置及施工方法，它可以防止注入管的腐蝕，切 割容易，可以提高隧道挖掘工程述度等；另外，它可以增 加地下水滲透方向的灌漿量，從而確保防水及強化地基^ 功效；第三，它注入管重量輕、易於操作、無注入管堵塞， 灌漿分佈良好，可提高注入效果。 本發明的目的是這樣實現的：它由注入管1，間隙台 2 ’防逆流裝置，灌漿材輸送管5，充填器6，封閉管9及連 接管12組成；注入管丨為空心管結構、管壁上以均勻的間隙 放射狀排列有注入口 3，其兩端設有螺紋；用於連接注入管 的連接管，注入管1的外側為按一定間隔佈置，並與之為一 體形成節的環狀間隙台2 ;可以開關注入口 3的防逆流裝 置；注入管1的内部插有注入灌漿材的灌漿材輸送管5 ;灌 漿材輸送管5的端部為充填器6，由可以用壓縮空氣收縮、 574459 A7 ------B7__ 五、發明説明" ~ 膨脹進而開放、關閉注入管i的軟橡膠套7、保護軟橡膠套7 的兩個保護套8組成；注入管丨的外部設有兩個封閉管9, 一 個較長、可以延長到孔眼U底部，另一較短、位於孔眼“ 入口處。 本發明上述注入管由高強度玻璃纖維塑膠（FRp)製成。 本發明的FRP注入管是玻璃纖維及樹脂組成的塑膠製 品，截斷及加工容易，灌漿後挖掘隧道時比鋼管易於鋸斷 從而加快施工進度；重量輕而易於搬運，並且耐化學性、 耐腐蝕性強、不易變質，不僅可以用於挖掘輔助方法，也 可以用於永久性的保強材料。此外，由於灌漿材料的接觸 面大’注入管表面粗糙，因此附著強度大。 本發明的多段灌漿裝置中，與FRP的注入管設計一體 化而特殊制成的間隙台保護著橡皮套，另外它還可以使注 入管位於孔眼的中央而使灌漿注入口不接觸孔壁，易於灌 漿；此外，注入管的位置位於孔中央，因此灌漿均勻，提 高灌漿的質量。 附圖說明 下面結合附圖詳述本發明的具體結構。 第1圖為本發明的多段灌漿裝置注入管設置到孔眼的 不意圖。 第2圖為本發明的多段灌漿裝置的剖面圖。 第3圖為本發明的多段灌漿裝置注入管的斷面圖和剖 面圖。 第4圖為本發明的多段灌漿裝置注入管内充填器和輸 本紙張尺度適用中Η國家標準(⑽Α4規格⑵〇χ297公釐) —-(Please read the precautions on the back before filling out this page) 0! 574459 、 Invention (please read the precautions on the back before filling out this page). First, the material used is a steel pipe, so if it is not completely touched by the inner wall of the ground, the steel pipe will be corroded and cannot become a permanent material. After the second 'completion', in order to perform the next excavation, it takes a long time to cut the exposed part of the ground. H According to the size of the end face of the second steep track, the depth of the deepening must be maintained, and the weight of the steel pipe also varies with Therefore, it is difficult to insert the steel pipe into the eyelet. Fourth, due to the weight of the steel pipe after inserting, the effect of grouting is reduced due to the weight of the eyelet and the injection of energy. All of them are open, and there are disadvantages such as uneven injection distribution. SUMMARY OF THE INVENTION The object of the present invention is to provide a multi-stage grouting device and construction method that can effectively solve the above problems, which can prevent the corrosion of the injection pipe, is easy to cut, and can improve Tunnel excavation engineering description, etc. In addition, it can increase the amount of grouting in the direction of groundwater infiltration, thereby ensuring waterproofing and strengthening the foundation ^ Third, its injection pipe is light in weight, easy to operate, has no injection pipe clogging, and has a good grouting distribution. Improve the injection effect. The object of the present invention is achieved by: it is composed of an injection pipe 1, a gap table 2 'a backflow prevention device, a grouting material conveying pipe 5, a filling 6. The closed pipe 9 and the connecting pipe 12 are composed of; the injection pipe 丨 is a hollow pipe structure, and the injection ports 3 are arranged radially on the pipe wall with a uniform gap; the two ends are provided with threads; the connecting pipe for connecting the injection pipe, The outer side of the injection pipe 1 is a ring-shaped gap table 2 arranged at a certain interval and forming a joint with it; the anti-backflow device of the injection port 3 can be opened and closed; and the inside of the injection pipe 1 is filled with a grouting material conveying pipe for injecting grouting material 5; the end of the grouting material conveying pipe 5 is a filler 6, which can be compressed with compressed air, 574459 A7 ------ B7__ 5. Description of the invention " ~ expand and open and close the soft rubber sleeve of the injection pipe i 7. The two protective sleeves 8 that protect the soft rubber sleeve 7 are composed of two closed tubes 9 on the outside of the injection tube 丨 one is longer and can be extended to the bottom of the eyelet U, and the other is shorter and located at the entrance of the eyelet. The injection tube of the present invention is made of high-strength glass fiber plastic (FRp). The FRP injection pipe of the present invention is a plastic product composed of glass fiber and resin, which is easy to cut and process. It is easier to saw than a steel pipe when digging a tunnel after grouting to speed up the construction progress; light weight and easy handling, and chemical resistance and corrosion resistance Strong, not easy to deteriorate, not only can be used for excavation auxiliary methods, but also can be used for permanent strength materials. In addition, since the contact surface of the grouting material is large, the surface of the injection pipe is rough, so the adhesion strength is high. In the multi-stage grouting device of the present invention, the gap table specially integrated with the design of the FRP injection tube protects the rubber sleeve. In addition, it can also locate the injection tube in the center of the eyelet and prevent the grouting injection port from contacting the wall of the hole. Grouting; In addition, the position of the injection pipe is located in the center of the hole, so the grouting is even and the quality of the grouting is improved. Brief description of the drawings The specific structure of the present invention is described in detail below with reference to the drawings. Fig. 1 is a view showing that the injection pipe of the multi-stage grouting device according to the present invention is provided to the eyelet. Fig. 2 is a sectional view of a multi-stage grouting device according to the present invention. Fig. 3 is a sectional view and a sectional view of an injection pipe of a multi-stage grouting device according to the present invention. Fig. 4 is a filling device for an injection pipe of a multi-stage grouting device according to the present invention and a conveying medium of this paper. The national paper standard (⑽Α4⑵0χ297mm) is applied.
“訂- (請先閲讀背面之注意事項再填寫本頁) 574459 五、發明説明（4 送管的示意圖。 第5圖為連接注入管的連接管的斷面圖和剖面圖。 具體實施方式 第2圖所示的是本發明的利用高強度玻璃纖維塑膠注 入b灌漿裝置的剖面圖。利用本發明的FRp注入管灌漿的 凌置有，注入管卜間隙台2,防逆流裝置，灌漿材輸送管5， 充填器6，封閉管9及連接管12。 注入管1是以FRP組成的圓柱型圓管，管的壁面設有多 個放射狀排列的注入口，沿著管道一定間距反復排列，管 I兩的外面有螺絲，多個注入管可以通過連接管12相互 連接在一起。 FRP官疋以玻璃纖維（Fiberglass)為主材料與不飽和樹 脂（Unsaturated- polyesterResin)複含的材料製成。此材料 有比鋁輕、比鐵耐熱和耐腐蝕、強度高等特點，是優秀的 半永久性建築材料。因此是在各種產業界廣為利用的新型 塑膠材料。 間隙台2是環狀，以一定間隔排列在注入管丨的外側， 與/主入官成為一體形成節。把注入管插入孔眼丨丨時，此間 隙台2防止注入管丨與孔眼地壁的接觸，以間隙台與孔眼壁 保持間隙，不防礙灌漿材的注入，盡量把注入管1位於孔眼 11的中心位置而中心應力的方向不會偏轉。而且此間隙台2 正好排列在注入管1伸入方向的注入口 3前部，因此當把注 入管1插入孔眼11時，可以防止防逆流裝置橡皮套4接觸到 不規則的孔眼11的内壁表面而被損壞，也可以防止注入口 3 (請先閲讀背面之注意事項再填寫本頁) “訂-"Order-(Please read the precautions on the back before filling out this page) 574459 V. Description of the invention (4 Schematic diagram of the feeding tube. Figure 5 is a cross-sectional view and a cross-sectional view of the connecting pipe connected to the injection pipe. Fig. 2 is a cross-sectional view of the grouting device using high-strength glass fiber plastic injection b according to the present invention. The FRp injection tube of the present invention is used for grouting, the injection tube is a gap table 2, an anti-backflow device, and the grouting material is conveyed. The tube 5, the filler 6, the closed tube 9 and the connecting tube 12. The injection tube 1 is a cylindrical round tube composed of FRP, and the wall surface of the tube is provided with a plurality of radially arranged injection ports, which are repeatedly arranged at a certain distance along the tube. There are screws on the outside of the two tubes I, and multiple injection tubes can be connected to each other through the connecting tube 12. The FRP official fabric is made of fiberglass as the main material and unsaturated resin (Unsaturated-polyesterResin). This material is lighter than aluminum, heat-resistant and corrosion-resistant, and has higher strength than iron. It is an excellent semi-permanent building material. Therefore, it is a new plastic material widely used in various industries. The gap table 2 is It is arranged at a certain interval on the outside of the injection tube 丨 and forms a joint with the main entrance. When the injection tube is inserted into the eyelet 丨 丨, this gap table 2 prevents the injection tube 丨 from contacting the floor wall of the eyelet. Keep a gap with the hole wall to prevent the injection of grouting material. Try to position the injection pipe 1 at the center of the hole 11 without deflection of the direction of the central stress. Also, the gap table 2 is aligned with the injection pipe 1 in the direction of injection. The front part of the inlet 3, so when the injection tube 1 is inserted into the eyelet 11, the rubber sleeve 4 of the anti-backflow device can be prevented from being damaged by contact with the inner wall surface of the irregular eyelet 11, and the injection port 3 (please read the back Please fill in this page again)
574459 A7574459 A7
五、發明説明（5 ) 的堵塞。 (請先閱讀背面之注意事項再填寫本頁) 當把注入管1插入孔眼11時，防逆流裝置不但可以防止 沙土或異物通過注入口 3進入到注入管1内，而且可以防止 通過注入管1注入灌漿材料通過注入口 3流入到注入管1和 孔眼間隙後重新逆流到注入管1内部。本實施例的防逆流裝 置為在注入管1外部套上的一定寬度的橡皮套4。當往注入 管1注入灌漿材料時，此橡皮套4堵住注入口 3,當注入壓力 上升時，灌漿材料就可以從橡皮套4和注入口 3之間的針眼 流入孔眼11與注入管1之間的間隙，充填其間隔。 •訂丨 此橡皮套4上可以形成微小的針眼。一般情況下橡皮 套4上的小針眼是處於關閉的狀態，但當注入管1内壓力上 升時，橡皮套4被膨脹，針眼也被擴大，灌漿材料從針眼被 流入到地基與注入管1之間，可以提高灌漿材料的注入效 果。此外，此防逆流裝置可以使用多種寬窄度的橡皮套4。 作為防逆流裝置的橡皮套4製作及安裝容易又低廉，套到圓 形注入管1的外部不形成凹凸、易於把注入管插入到孔眼j i 中即可。 注入管1的内部設有灌漿材輸送管5，利用此灌漿材輸 送管5往注入管1内注入灌漿材料。灌漿材輸送管5的前部設 有充填器6。 充填器6的中心被灌漿材輸送管5貫穿、成圓桶型，由 兩端的保護套8和中心的軟橡膠套7組成。 此軟橡膠套7跟外部的空氣注入管連接，通過此空氣 注入管吹進或排除壓縮空氣，可以使此管道自如地收縮、 本紙張尺度適用中國國家標準（CNS) A4規格（21〇><297公楚） 574459 A7 ____ Β7_ 五、發明説明（6 ) 膨脹。吹進壓縮空氣時，此軟橡膠套7與注入管1内壁之間 的間隙縮小，由此可以防止灌漿材的逆流，灌漿材只能通 過注入口 8流入到孔眼11和注入管1之間空隙，從而從孔眼 11的底部開始均勻地注入灌漿材料。注入一定程度後，收 縮軟橡膠套7把充填器6提升一點反覆進行如上的操作。這 就叫做多段灌漿施工方法。 如上所述的保護套8的直徑比注入管1的内徑小，因此 可以在注入管1内自由地移動，當收縮軟橡膠套7後，灌漿 材輸送管5在注入管1内移動時，保護軟橡膠套7不接觸注入 管1壁以防磨損。 與注入管1 一起塞入孔眼11内的還有兩個封閉管9。封 閉管9一個位於注入管1的底部，長度較長，另一個是位於 在注入管1的上部長度較短。這兩個管道均延伸到孔眼i i 入口。通過此封閉管9注入封閉材10填滿注入管1和孔眼n 之間的空隙。封閉材10通過注入管1底部的長的封閉管9注 入到孔眼11的底部，封閉材1〇填滿到孔眼η入口時，通過 注入管1上部的短的封閉管9流出。灌注的封閉材1〇可以把 孔眼11内殘留的不純物排除到孔眼丨丨外部，並且可以起防 止水滲到孔眼11内部的作用，也可以固定注入管1的位置使 灌漿材料易於灌漿，還可以同以後被注入的灌漿材料混合 成一體堅固地被硬化。 利用本發明的FRP注入管多段灌漿裝置的施工順序； 首先在掘鑿面的上方向開始鑽眼。另外在工廠製作帶有注 入口 3和間隙台2的注入管1。防止逆流的橡皮套設置在注入 9 (請先閲讀背面之注意事項再填寫本頁) 本紙張尺度適用中國國家標準（CNS) A4規格（210 X 297公釐） 574459 五、發明説明（7 ) 笞的’主入口 3上，根據孔眼11的深度使用連接管12把注入 官1相互連接。鑽眼完畢後把注入管丨插入到孔眼u。另外 把兩個封閉管9插入到孔眼丨丨内。一個是插入到注入管丨與 孔眼11間隙的底部，延長到孔眼u上部；另外一個插入到 注入管1和孔眼11間隙的上部，延長到孔眼11的入口。 把庄入管1和封閉管9插入完後，用封閉材10把孔眼11 的入口進行灌封。 用插入注入管1和孔眼i丨間隙底部的封閉管9注入封閉 材10。此封閉材10是填充到孔眼u和注入管丨之間的空隙， 排除不純物。灌漿時，當通過設置在孔眼11上部的封閉管9 流出封閉材10時，結束灌漿。封閉材1〇硬化到一定程度時， 把帶有充填器6的灌漿材輸送管6插入到注入管丨内開始注 入灌漿材料。充填器6中心的軟橡膠套7被壓縮空氣膨脹而 岔封於注入管1内壁，從而防止灌封材的逆流，只能通過注 入口 3注入灌漿材。一定長度灌漿完時，重新收縮軟橡膠套 7 ’提升灌漿材輸送管5，然後重新膨脹軟橡膠套7密封注入 管1進行重覆操作，直到灌漿完畢注入的灌漿材先灌滿注入 皆1，然後通過注入口 3滲透到注入管丨和孔眼丨丨之間的間 隙’並與封閉材10—起逐漸硬化。 A4^ (210X 297^)Fifth, invention description (5). (Please read the precautions on the back before filling this page) When inserting the injection tube 1 into the eyelet 11, the anti-backflow device can not only prevent sand or foreign matter from entering the injection tube 1 through the injection port 3, but also prevent it from passing through the injection tube 1. The injection grouting material flows into the gap between the injection pipe 1 and the eyelet through the injection port 3 and then flows back into the injection pipe 1 again. The backflow prevention device of this embodiment is a rubber sleeve 4 with a certain width on the outer sleeve of the injection tube 1. When the grouting material is injected into the injection tube 1, the rubber sleeve 4 blocks the injection port 3. When the injection pressure rises, the grouting material can flow from the pinhole between the rubber sleeve 4 and the injection port 3 into the hole 11 and the injection tube 1. The gap between them fills its gap. • Order 丨 Tiny eyelets can be formed on this rubber sleeve 4. In general, the small needle eye on the rubber sleeve 4 is closed, but when the pressure in the injection tube 1 rises, the rubber sleeve 4 is expanded, the needle eye is also enlarged, and the grouting material flows from the needle eye to the foundation and the injection tube 1 At the same time, the injection effect of the grouting material can be improved. In addition, the anti-backflow device can use a variety of wide and narrow rubber sleeves 4. The rubber sleeve 4 as an anti-backflow device is easy and inexpensive to manufacture and install, and it is easy to insert the injection tube into the eyelet j i without forming unevenness on the outside of the circular injection tube 1. A grouting material conveying pipe 5 is provided inside the injection pipe 1, and the grouting material conveying pipe 5 is used to inject the grouting material into the injection pipe 1. A filler 6 is provided at the front of the grouting material conveying pipe 5. The center of the filler 6 is penetrated by the grouting material conveying pipe 5 into a barrel shape, and is composed of a protective sleeve 8 at both ends and a soft rubber sleeve 7 at the center. The soft rubber sleeve 7 is connected with an external air injection pipe, and the compressed air is blown in or exhausted through the air injection pipe, so that the pipe can be contracted freely. The paper size applies the Chinese National Standard (CNS) A4 specification (21〇 > < 297 Gongchu) 574459 A7 ____ Β7_ 5. Description of the invention (6) Expansion. When compressed air is blown in, the gap between the soft rubber sleeve 7 and the inner wall of the injection pipe 1 is reduced, thereby preventing backflow of the grouting material, which can only flow into the gap between the eyelet 11 and the injection pipe 1 through the injection port 8 Therefore, the grouting material is uniformly injected from the bottom of the eyelet 11. After being injected to a certain degree, the soft rubber sleeve 7 is contracted to raise the filler 6 a little, and the above operation is repeated. This is called a multi-stage grouting construction method. As described above, the diameter of the protective sleeve 8 is smaller than the inner diameter of the injection tube 1, so it can move freely in the injection tube 1. When the soft rubber sleeve 7 is contracted, the grouting material conveying tube 5 moves in the injection tube 1, Protect the soft rubber sleeve 7 from contact with the wall of the injection tube 1 to prevent abrasion. Plugged into the eyelet 11 together with the injection tube 1 are two closed tubes 9. One of the closing tubes 9 is located at the bottom of the injection tube 1 and has a longer length, and the other is located at the upper portion of the injection tube 1 and has a shorter length. Both pipes extend to the entrance of the eyelet i i. The injection sealing material 10 fills the gap between the injection tube 1 and the perforations n through the closing tube 9. The closing material 10 is injected into the bottom of the eyelet 11 through the long closing tube 9 at the bottom of the injection tube 1, and when the sealing material 10 is filled up to the entrance of the eyelet n, it flows out through the short closing tube 9 on the upper part of the injection tube 1. The filling sealing material 10 can exclude impurities remaining in the perforations 11 and the outside, and can prevent water from penetrating into the perforations 11. It can also fix the position of the injection pipe 1 to make the grouting material easy to grout. It is mixed with grouting material injected later to form a solid hardened body. The construction sequence of the multi-stage grouting device using the FRP injection pipe of the present invention; first, drilling is started in the upward direction of the digging face. In addition, an injection pipe 1 with an injection port 3 and a gap table 2 is manufactured at the factory. The rubber sleeve to prevent backflow is set at injection 9 (please read the precautions on the back before filling this page) This paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm) 574459 5. Description of the invention (7) 笞On the 'main entrance 3', the injection pipe 1 is connected to each other using a connecting pipe 12 according to the depth of the eyelet 11. After drilling, insert the injection tube into the eyelet u. In addition, two closed tubes 9 are inserted into the eyelets. One is inserted into the bottom of the gap between the injection pipe 丨 and the eyelet 11 and extended to the upper part of the eyelet u; the other is inserted into the upper part of the gap between the injection pipe 1 and the eyelet 11 and extended to the entrance of the eyelet 11. After inserting the inlet pipe 1 and the closing pipe 9, the inlet of the eyelet 11 is potted with a sealing material 10. The closing material 10 is injected through a closing pipe 9 inserted into the injection pipe 1 and the bottom of the gap. The sealing material 10 is a gap filled between the perforations u and the injection tube 丨, and impurities are excluded. During the grouting, when the sealing material 10 flows out through the closing pipe 9 provided on the upper part of the eyelet 11, the grouting is finished. When the sealing material 10 is hardened to a certain degree, the grouting material conveying pipe 6 with the filler 6 is inserted into the injection pipe 丨 and the grouting material is injected. The soft rubber sleeve 7 at the center of the filler 6 is inflated by the compressed air and is forked into the inner wall of the injection pipe 1 to prevent the backflow of the potting material. The grout material can only be injected through the injection port 3. When the grouting is completed for a certain length, the soft rubber sleeve 7 is re-contracted to raise the grouting material conveying pipe 5 and then the soft rubber sleeve 7 is re-expanded to seal the injection pipe 1 for repeated operations. It then penetrates through the injection port 3 into the gap between the injection tube 丨 and the perforation 丨 丨 and gradually hardens together with the sealing material 10. A4 ^ (210X 297 ^)
丨*訂— (請先閲讀背面之注意事項再填寫本頁) 574459 A7 B7 發明説明（8 ) 元件標號對照 1…注入管 2…間隙台 3".注入口 4…橡皮套 5…灌漿材輸送管 6…充填器 7…軟橡膠套 8…保護套 9…封閉管 10···封閉材 11…孔眼 12…連接管 (請先閲讀背面之注意事項再填寫本頁) 本紙張尺度適用中國國家標準（CNS) A4規格（210X297公釐） 11丨 * Order— (Please read the precautions on the back before filling this page) 574459 A7 B7 Description of the invention (8) Component number comparison 1 ... injection tube 2 ... interval table 3 " .injection port 4 ... rubber sleeve 5 ... grouting material delivery Tube 6 ... Filler 7 ... Soft rubber sleeve 8 ... Protective sleeve 9 ... Closed tube 10 ... Sealing material 11 ... Eyelet 12 ... Connecting tube (Please read the precautions on the back before filling this page) This paper size applies to China Standard (CNS) A4 size (210X297 mm) 11