A double anchor cable combined locking device and method thereof

Abstract

The invention relates to a double anchor cable combined locking device and method. The double anchor cable combined locking device includes a threaded locking section and a clip anchor locking section. The threaded locking section is provided with an anchor cable steel strand The steel strand of the anchor cable fits through the center of the supporting plate. The steel strand of the anchor cable is fitted with a threaded sleeve, which is located at the lower part of the supporting plate and is close to the supporting plate. The threaded sleeve and the supporting plate pass through the nut Fixed together; the locking section of the clip anchor is provided with a double anchor cable connector, and two anchor cable holes are opened on the double anchor cable connector, and one end of the two anchor cable steel strands passes through the upper and lower anchor cable holes respectively Finally, it is fixed by a clip-type anchorage; the double anchor cable combined locking method includes drilling, preparing the anchor cable, anchoring the anchor cable, double anchor cable combined locking, and anchor cable tensioning and locking alone. The double anchor cable joint locking device and method improve the overall support strength and stability of the anchor cable anchorage system, are safe and reliable, have a simple structure, are convenient to install, and have wide practicability.

Description

technical field [0001] The invention relates to a double anchor cable device, in particular to a double anchor cable combined locking device and method which can effectively enhance the reliability of an anchor cable support system. Background technique [0002] In the mid-1960s, Australian mines used anchor cables for rock mass reinforcement for the first time. In 1996, small-aperture prestressed anchor cables were successfully tested in coal mining roadways in my country. Due to the anchor cable support has large pre-tightening force, high bearing capacity, With the advantages of easy installation and other advantages, anchor cable support has become one of the main support forms of coal mine roadways. However, in the prior art, the locking structure of the anchor cable is mostly locked by a single clip-type anchor. When the deformation of the roadway is large and the stress on the anchor cable is high, the anchor is under high stress corrosion and chemical corrosion. It i...

AI Technical Summary

Problems solved by technology

[0004]In order to solve the problem that the existing anchor cable support structure is easy to slip and fail, the present invention provides a double anchor cable combined locking device and method, the double anchor cable The combined locking device and method of anchor cables adopts the method of combining thread locking and clip-type anchorage locking, and designs a locking system that can simultaneously realize the joint tension locking of double anchor cables and the individual tension locking of each anchor cable. The device, while ensuring a large pre-tightening force on the anchor cable, has changed the limitation of the tension and pre-tightening of the single-clamp anchorage for the anchor cable, and avoided the steel strand slippage that occurred when the single-clip anchorage was used. The failure phenomenon of the anchor cable caused by the movement, so that the overall support strength and stability of the anchor cable anchorage system are improved, safe and reliable, simple in structure, easy to install, and has a wide range of practicability

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