The construction and support at tunnel intersection are introduced,and provides the solvent for the construction way and problem in intersection,which can provide a reference and sprend for the safe construction.

In order to solve this problem,based on the engineering case at the solid crossed intersection of single engine roadway and water.

The successful application of bolting and shotcreting with wire mesh in the big intersection construc- tion in Haizi Coal Mine,which provides good support example for big section road with soft rock and offers a certain value on the spreading and use.

Single satellite crossover differences of Jason-1 to T/P are also calculated and compared.

With the data sampled near the crossover, harmonic analysis is performed to derive constants of 12 constituents( S a,S sa ,M m,M f,Q 1,O 1,P 1,K 1,N 2,M 2,S 2,K 2 ).

According to the inhomogeneity of altimeter data distribution over ocean, the authors propose two methods for weighting in altimeter data processing, one for crossover points and the other for non crossover points.