At both ends of conduit in non-explosion proof area, the bridging lines should welded or the earth wires should be connected with clamp.
非防爆区域内穿线管连接处两端，应焊接跨接线，或用接地线通过接地卡连接。
2
It is shown by the analysis and the verification that formula in this paper can be used to calculate the vertical earth pressure on conduit hidden by filling with soil including convexly and in gully.
分析和验证结果表明，本文公式适用于包括上埋式和沟埋式在内的填埋式管道土压力计算的一般情况。
3
It is shown by the analysis and the verification that formula in this paper can be used to calculate the vertical earth pressure on conduit hidden by filling with soil including convexly and in...