Abstract: A slope stabilizer in which both a ground anchorage and a soil nail are located in a single borehole. The ground anchorage includes a plurality of ground anchorages, each including a tensile member bonded to the bore grout along substantially its whole length. The slope stabilizer has the advantage of allowing the ground to be pre-stressed using the ground anchorages. However, an active zone of the ground is also stabilized by the soil nail, which allows a lighter facing structure to be used than is normal with ground anchorages. Economy of operations is obtained, as a number of items are included in a single borehole.

Abstract: The present invention provides a single bore multiple anchorage in which a plurality of unit anchorages (2, 4) are contained in a single bore, the unit anchorages (2, 4) each comprising a tendon (12, 14) having a bond length bonded to the bore grout and a free length, wherein at least one of the tendons comprises a synthetic polymeric material. The ground anchorage means may be made by placing a plurality of unit anchorages in a bore, pouring grout into the bore and stressing each of the tends separately and locking the stressed tendons individually with respect to the anchor head.

Abstract: In a slope stabilising means, a single borehole (4) comprises both a ground anchorage (7) and a soil nail means (18), comprising a tensile member bonded to the bore grout along substantially its whole length. The slope stabilising means has the advantage of allowing the ground to be pre-stressed using the ground anchorage means (7). However, the active zone of the ground (2) is also stabilised by the soil nail means (18), which allows a lighter facing structure (24) to be used than is normal with ground anchorage means. Economy of operations is obtained, as a number of items are included in a single borehole.

Abstract: A ground anchor assembly comprises a looped cable 3 passing around a saddle 4 with one or more optional recesses 8 in its outer surface 7, all this being held in place by solidified grout or the like in an elongate bore 1. Extension 5 gives good transfer of forces when both cable ends are stressed outwards, and tubes 6 prevent internal cracking of the grout. After a period of use the cable 3 can be removed by pulling one cable end only.More than one such cable 3 can pass round saddle 4, and more than one such assembly can locate in the bore 1.