Broken surrounding rock resin anchoring plus casing full-length cement slurry anchoring device and anchoring method
A technology of crushing surrounding rock and adding casing, which is used in earth-moving drilling, bolt installation, mining equipment, etc. problems, to avoid low efficiency, enhance strength, and increase the strength of surrounding rock
Inactive Publication Date: 2017-08-18
HENAN POLYTECHNIC UNIV
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Problems solved by technology
[0003] The object of the present invention is, aiming at the defects of the above-mentioned existing jointed broken rock mass resin anchoring technology, the present invention provides a full-length cement grout anchoring device and anchoring method for broken surrounding rock resin anchoring plus casing, aiming at Solve the problem that the jointed and broken rock mass cannot be used for bolt setting and the problem of poor anchoring effect of the resin bolt end anchor
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[0030] As shown in the accompanying drawings, the present invention is aimed at the fact that after the rock mass is drilled with joints, it is easy to collapse the hole, and the resin anchoring agent 8 cannot be plugged into the designated position of the borehole, or the anchor rod 1 cannot be anchored after the anchoring agent 8 is inserted into the borehole. In place, it was developed for the problem of anchorage failure.
[0031] The full-length cement slurry anchor injection device for broken surrounding rock resin anchoring plus casing, including a grouting hose 4, a grouting ball valve 3 and a grouting casing 2, and the grouting hose 4 and the grouting casing 2 pass through the grouting The ball valve 3 is connected, and the head of the grouting casing 2 is provided with an annular screw 2A, and a grouting outlet leading from the inner cavity of the pipe to the outer periphery of the pipe is provided at the position between the head of the grouting casing 2 and the wall...
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The invention discloses a full-length cement slurry anchor injection method for broken surrounding rock resin anchoring and casing. The anchor injection device includes a grouting hose (4), a grouting ball valve (3) and a grouting casing (2). The grouting hose (4) and the grouting sleeve (2) are connected through the grouting ball valve (3). The head of the grouting sleeve (2) is provided with a ring thread (2A). 2) The position between the head and the roadway wall is provided with a grout hole (2B) leading from the inner cavity of the pipe body to the periphery of the pipe body, and the grout hole (2B) is located in the pipe wall of the grouting casing (2) And arrange along the circumferential direction of the grouting casing (2) and the position of the head. Invention of broken surrounding rock resin anchorage plus casing full-length cement grout anchor injection device and anchor injection method can be reused, effectively avoiding the disadvantages of high cost and low efficiency caused by the use of special grouting anchors, At the same time, the failed anchor rod can play the support function again.
Description
technical field [0001] The invention relates to the technical field of coal mining, in particular to a full-length cement slurry anchoring device and anchoring method for broken surrounding rock resin anchoring and casing, which are mainly used for setting bolts in jointed broken rock roadways due to rock It is too broken so that the bolt cannot be set, or because the rock mass is very broken and the anchoring effect is poor, it provides technical support for the safety support of the jointed broken rock mass roadway. Background technique [0002] During the construction of the jointed and broken rock mass roadway in the coal mine, due to the existence of various weak surfaces in the surrounding rock, the surrounding rock is extremely broken, and it is damaged twice during drilling. After the drill pipe is pulled out of the hole, two situations will occur: one is that during the process of sending the anchoring agent into the drilling hole, the broken rock blocks will squeez...
Claims
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IPC IPC(8): E21D20/02
Inventor 张盛句世元韩学鋒勾攀峰胡耀敏王晓明
Owner HENAN POLYTECHNIC UNIV