Embedded device for anchor discs for measuring the thickness of unstable layers of swelling and contracting soil slopes

Abstract

The invention discloses an embedding device for an anchoring disc for measuring the thickness of an unstable layer of a swelling soil slope. The embedding device comprises the anchoring disc (1), a bolt ring (2), a transmission sleeve (3), an ejector pipe (4), a sliding disc (5), an ejector disc (6) and a wall protection sleeve (7). A plurality of elastic sheet assemblies are arranged on the front surface of the anchoring disc (1). An installing sleeve is fixed to the rear surface of the anchoring disc (1) and provided with a steel wire clamp used for fixing a steel wire (13). A plurality of transmission teeth are arranged on the sleeve outer wall of the installing sleeve. The front end of the ejector pipe (4) and the transmission sleeve (3) are fixed. The installing sleeve is sleeved with a cavity of the transmission sleeve (3), and the transmission teeth are engaged with transmission grooves. Bolts (17) used for being inserted in bolt holes of the anchoring disc (1) are arranged on the front surface of the bolt ring (2). When the bolts (17) are inserted in the bolt holes, a blade (9) abuts against the bolts (17) and is inwards retracted into the anchoring disc (1). The embedding device is firmly fixed in the swelling soil, and the accurate measurement result is ensured.

Description

technical field [0001] The invention relates to the field of reinforcement of swelling and shrinking soil slopes, in particular to an embedding device for an anchor plate used for measuring the thickness of an unstable layer of a swelling and shrinking soil slope. Background technique [0002] Expansion-shrinkage soil has significant expansion-contraction, fissures, and over-consolidation properties. The slope after excavation of the above-mentioned soil mass will undergo repeated swelling of water absorption and shrinkage of water loss under the action of atmospheric force. The expansion and contraction active layer will be formed; and the unloading relaxation deformation of the soil will occur due to the release of over-consolidation stress, that is, the unloading release layer will be formed. The above-mentioned expansion and contraction active layer and unloading release layer are collectively referred to as the unstable layer. The unstable layer of the expansive soil s...

AI Technical Summary

Problems solved by technology

[0004] The measuring devices of the prior art have the following defects: firstly, most of the anchor discs of the prior art are shrapnel type, which are embedded into the soil of the measurement hole by elastic force, but this type of shrapnel type is only suitable for soft soil, soil of swelling and shrinking soil The body is harder, and the shrapnel-type anchor plate is difficult to fix firmly in the soil and is easy to loosen, resulting in inaccurate measurement results; moreover, because the measurement hole is relatively long, the soil in the hole is prone to collapse, which interferes with normal measurement

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