We　present　two　robust　quantum　secret　sharing　protocols　against　two　kinds　of　collective　noise　with　single　logical　qubits.　Each　logical　qubit　is　encoded　in　two-qubit　noiseless　states　and　so　it　can　function　over　a　quantum　channel　subjected　to　a　collective　noise.　The　safety　of　transmission　is　ensured　by　nonorthogonality　of　the　noiseless　states　traveling　forward　and　backward　on　the　quantum　channel.　Moreover,　we　construct　efficient　quantum　circuits　to　implement　channel　encoding　and　information　encoding　by　means　of　primitive　operations　in　quantum　computation.