Grouting hole water stop casing pipe for underground extracting and drilling operations and use method thereof
A technology for extracting boreholes and water-stop casings, which is applied to drilling equipment and methods, drilling equipment, and earth-moving drilling and mining, etc. problems such as casing, to achieve the effect of increasing stability and firmness, and increasing sealing
Pending Publication Date: 2019-01-08
SHANXI LUAN MINING GRP
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Problems solved by technology
Before installing the water-stop sleeve, install a small-diameter PVC pipe on the edge of the sleeve. After installing the water-stop sleeve, grout along the PVC pipe until the cement slurry flows out of the water-stop sleeve. This method injects Generally, after the cement is solidified, there are many cavities between the casing of the water-stop casing and the coal wall, resulting in low grouting pressure and poor stability of the water-stop casing, which cannot meet the role of fixing the water-stop casing.
Method used
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[0017] like figure 1 As shown, the grouting hole water-stop casing used for downhole drainage drilling operations of the present invention includes a pipe body 1, a sealing band 2 is provided on the outer surface of the pipe body 1, and a baffle 2 is provided at the open end of the pipe body 1. The sealing bandage 2 is a multi-layer woven bag, the baffle plate 3 is a flange, the connection mode between the baffle plate 3 and the pipe body 1 is welding, and the coverage of the sealing bandage 2 on the pipe body is 1 meter.
[0018] When the present invention is in use, the woven bag is densely wound around the outer surface of the pipe body, and the winding range is 1 meter. The water-stop sleeve is pushed into the pre-opened drill hole with a drilling rig, and the flange baffle is welded at the mouth of the pipe body. The flange baffle seals the woven bag at the mouth, and then uses the mud pump to inject grout from the water-stop casing under pressure until fine water drops s...
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The invention discloses a grouting hole water stop casing pipe for underground extracting and drilling operations and a use method thereof and belongs to the field of underground drilling and grouting. The technical problem to be solved is to provide the grouting hole water stop casing pipe for underground extracting and drilling operations, PVC pipes are not used, the leakage of slurry can be effectively prevented, the grouting pressure is raised, the fixing property is good, the stability is good. A technical scheme used to solving the technical problem is that the grouting hole water stop casing pipe for underground extracting and drilling operations comprises a pipe body, the outer surface of the pipe body is provided with sealed bandage, an opened end of the pipe body is provided witha baffle plate, the sealing bandage is a multi-layer woven bag, the baffle plate is a flange which is welded to the pipe body, the effects of slurry leakage prevention and pressure resistance can beachieved effectively through the sealed bandage and the baffle plate arranged at an outer layer. The grouting hole water stop casing pipe and the use method can be widely applied to the field of underground drilling and grouting.
Description
technical field [0001] The invention discloses a grouting hole water-stop sleeve used for downhole drainage drilling operations and a method for using the same, belonging to the technical field of downhole drilling and grouting. Background technique [0002] Before the construction of the downhole grouting hole, it is necessary to solidify the water-stop casing at the hole, and then install the water-stop valve to meet the grouting pressure. The commonly used downhole drilling and grouting method is . Before installing the water-stop sleeve, install a small-diameter PVC pipe on the edge of the sleeve. After installing the water-stop sleeve, grout along the PVC pipe until the cement slurry flows out of the water-stop sleeve. This method injects Generally, after the cement is solidified, there are many cavities between the casing of the water-stop casing and the coal wall, resulting in low grouting pressure and poor stability of the water-stop casing, which cannot meet the rol...
Claims
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Login to View More IPC IPC(8): E21B7/20E21B33/03
CPCE21B7/20E21B33/03
Inventor 华明国王红飞崔宝库王志豪宋显锋栗磊李源李常浩谷文军田文龙
Owner SHANXI LUAN MINING GRP