西夏占据兰州、定西,以马衔山为界,构筑兰州—定西防区。历史时期马啣山有四个关口通道,西夏控制时期,主要通过汝遮谷通道连接熙州(今临洮)与兰州、定西。汝遮谷通道分为凡川会、龛谷关两个关隘,对相关关城、堡寨遗址进行实地考察,确定其地理坐标,对于研究西夏在兰州、定西盆地的防御具有重要价值,对于复原西夏西寿保泰监军司的边防体系有重要作用。
Western Xia occupied Lanzhou and Dingxi then constructed Lanzhou-Dingxi defence area by the boundary of Mahan Mountain.In history, there were four passageways across Mahan Mountain and in the reign of Western Xia, Ruzhegu passageway which connected Xizhou(now Lintao) and Lanzhou and Dingxi,consisted of Fanchuanhui pass and Kanguguan pass.A field research of the related pass and fortress relics to ascertain their geographical coordinates has important value for the study of Western Xia's defence of Lanzhou-Dingxi basin as well as recovering the fronties defence of Xishoubaotai Military Command in Western Xia.