With ongoing increases in excavation depth, the large-scale toppling instability failure of stratified anti-inclined slopes is gaining wide attention. To address problem controlling deformation with traditional small-deformation materials, this paper takes results existing studies on extraordinary mechanical properties engineering-scale Negative Poisson's ratio (NPR) anchor cable as a theoretic...

Under the condition of close-distance double-thick coal seams’ mining, serious strata behavior occurred in lower retracement channel, which is affected by double disturbance with upper coal-pillar static load and mining dynamic pressure. Field investigation, laboratory test, numerical simulation were used to study failure characteristics stress distribution N0381 channel. The results show that ...

A correction to this paper has been published: https://doi.org/10.1007/s10342-021-01385-w

Unlike earth-anchored suspension bridges, self-anchored bridges (SASBs) involve a special construction stage, namely, suspender tensioning, in which the tensioning force and sequence are crucial complicated. Against this background, an example bridge A, SASB with steel-concrete composite beam, is introduced detail. Using MIDAS finite element software, scheme formulated based on combination meth...

workspace analysis is one of the most important issues in the robotic parallel manipulator design. ‎however, ‎the unidirectional constraint imposed by cables causes this analysis more challenging in the cabledriven redundant parallel manipulators. controllable workspace is one of the general workspace in the cabledriven redundant parallel manipulators due to the dependency on geometry parameter...

This paper investigates the effect of metallic sheaths on losses and temperature of medium voltage power cables. Two grounding methods of sheaths, including both ends bonding and single point bonding that causes different situations on cable ampacity, are considered. Electrical losses of cables that are main sources of heat are calculated in both conductor and metallic sheath of the cables. She...

In coal mining, as the mining depth increases, a complex mechanical environment of “high ground stress”, temperature”, karst water pressure”, and “mining disturbance”, namely “three highs one disturbance” appears. Many roadways have characteristics soft rock with large deformation, pressure, difficult support, high support cost, which brings severe challenges to safe efficient production mines....