Whenever any circuit judge, pending his assignment to hold the courts of any circuit, shall die, resign, be disabled by illness or be excused for any other reason considered sufficient in the opinion of the Chief Justice of the Supreme Court or in case of a vacancy in the office of circuit judge of any circuit or if a special session of the court of general sessions or common pleas be ordered as provided for in §§ 14-5-910 to 14-5-950, the Chief Justice of the Supreme Court may assign any other disengaged circuit judge to hold the courts of any such circuit, to fill any appointment made necessary by such vacancy or to hold any special session of the circuit court that may be ordered by the Chief Justice.