Recoverable inflatable umbrella support type air bag anchor rod and using method thereof
A technology for inflatable umbrellas and anchor rods, applied in excavation, sheet pile walls, construction, etc., can solve problems such as slow construction progress, achieve good results, improve end resistance, and have reasonable structures
Inactive Publication Date: 2021-06-18
王超 +19
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Problems solved by technology
However, since the grouting method is still mainly used, it is unavoidable. After the anchoring task is completed, the grouted solidified body of the anchor stays in the underground soil and becomes a permanent underground obstacle. In addition, the grouting construction takes a certain time to form the anchorage. Force, resulting in slow construction progress
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[0029] In order to further understand the invention content, characteristics and effects of this patent, the following examples are given, and detailed descriptions are as follows in conjunction with the accompanying drawings:
[0030] see Figure 1~3 , the invention discloses a recyclable inflatable umbrella support airbag anchor rod, including a hollow anchor rod body 1 placed in a soft soil injection hole 18, a backing plate 2 and an inflating device are installed on the top of the anchor bar body 1; the backing plate 2 Placed outside the injection hole 18; the inflation device includes an air intake pipe 3, one end of the air intake pipe passes through the backing plate 2 and communicates with the inside of the anchor body 1; the part of the air intake pipe 3 located outside the injection hole 18 is provided with a pressure gauge 4 and valve 5;
[0031] The bottom of the anchor body 1 is an expansion part, and the expansion part includes a square anchor head 10 fixed at t...
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The invention relates to the technical field of geotechnical engineering anchoring, in particular to a recoverable inflatable umbrella support type air bag anchor rod and a using method thereof. The anchor rod comprises a hollow anchor rod body, a base plate and an inflation device are mounted at the top of the anchor rod body, the bottom of the anchor rod body comprises a square anchor head, a linkage structure is arranged on the square anchor head, an air bag is wrapped around on the outer side of the anchor head and the outer side of the linkage structure, an annular connecting lantern ring and an annular connecting piece are arranged on the side, close to the square anchor head, of the anchor rod body, air inlet holes are formed in the anchor rod body on the inner side of the air bag, a spring clamping piece for positioning the annular connecting lantern ring is arranged on the anchor rod body, the outer side of the anchor rod body is sleeved with an auxiliary jacking pipe, and a flexible brace is fixed on the annular connecting lantern ring. According to the recoverable inflatable umbrella support type air bag anchor rod and the using method thereof, the end resistance of the anchor rod is increased through umbrella support reaming, the air bag further extrudes the soil body at the end after being inflated and expanded, secondary reinforcement is achieved, and then the stress of the anchor rod is increased; and meanwhile, gas injection and grouting can both be used, and when gas injection cannot be conducted, gas injection can be replaced with grouting for secondary reinforcement.
Description
technical field [0001] The invention relates to the technical field of geotechnical engineering anchoring, in particular to a recyclable inflatable umbrella support airbag anchor rod and a method for using the same. Background technique [0002] Anchor rods are the most basic part of roadway support in contemporary coal mines. Now anchor rods are not only used in mines, but also in engineering technology to strengthen the main body of slopes, tunnels and dams. As a tensile member that goes deep into the ground, one end of it is connected to the engineering structure, and the other end goes deep into the ground. The whole bolt is divided into a free section and an anchor section. The free section refers to the area where the tension at the top of the bolt is transmitted to the anchor. Its function is to apply prestress to the anchor rod; the anchorage section refers to the area where the cement paste bonds the prestressed tendons to the soil layer, and its function is to incr...
Claims
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IPC IPC(8): E02D5/76E02D17/04E02D17/20
CPCE02D5/765E02D17/04E02D17/20E02D2600/30
Inventor 王超李伟亮商永生孙立强乔建鑫王忠平吴艳利徐东施杰张瑞伟刘建超刘立刚牛利民张娇万励张琳刘继磊马西萌王达远徐耀东
Owner 王超
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