内昆铁路长大坡道防止车辆溜逸办法的探讨

EXPLORATION ON METHODS TO PREVENT VEHICLES SLIDING DOWN EXTRA-LONG SLOPES ON NEI-KUN RAILWAY

内昆线大关至昭通段桥隧多、坡度大，高坡地段累计长度为８４ｋｍ左右，多数地段坡度为２０％。以上， 线路设计最大坡度２３．５‰。为确保铺架施工顺利安全进行，本文对车辆溜逸原因和车辆防溜方面作了一些探 讨。

There are many bridges and tunnels and a lot of extra-long slopes in the Daguan-Zhaotong Section of Nei-Kun Railway. The accumulative total length of the high slope sections is nearly 84 km, and the gradi- ents of most sections are above 20%, while the maximum line design gradient is 23. 5‰. In order to guarantee the safety operation of track laying during construction, the reasons of vehicles sliding down the slope and its preventive measures are explored in this paper.