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宋蒙(元)战争之初,四川形势危急,为加强防御,四川制置使余玠创造性地建成了由数十个据守要道、相互呼应的山城组成的防御体系,泸州神臂城即其中一座山城。神臂城属于余玠规划建设的第一批山城,由曹致大主持建设。神臂城建成后,因其重要战略位置和完备的城防体系,成为宋蒙(元)双方争夺的焦点。实地调查结果表明,神臂城城防遗迹保存较好,类型丰富,包括城墙(含一字城、耳城)、城门、敌台、炮台、墩台、哨所、校场、地道、护城池等。这些城防要素各司其职又紧密配合,构成了内外两层防御体系和四大防御区域,其中东门区域自然防御条件最差,因此城防人工防御要素最多,城防体系最复杂。总的来看,神臂城防御体系具有选址合理、山形水势利用得当、四大防区相互依存、防御点多层立体、高墙窄门和巧布暗道等诸多特点,与同时期其他山城相比较,堪为诸城之典范。
In the early days of the war, the situation in Sichuan was critical. In order to strengthen the defense, Sichuan made Yu Dao creatively build up a defensive system composed of dozens of fortified and reciprocal mountain towns. A mountain city. God arm city belongs to the first batch of planning and construction of the mountain town, presided over by Cao Zhi. After the completion of the arm temple of God, it became the focus of the battle between Song and Yuan (Yuan) because of its important strategic location and comprehensive urban defense system. The field survey results show that the god arm city castle preservation is good, the type is rich, including the city wall (including the word city, the ear city), Shing Mun, the enemy units, forts, piers, posts, schools, tunnels, moat and so on. These urban defense elements perform their respective functions in close coordination and form the internal and external two-tier defense system and the four defense areas. Among them, the natural defense conditions in the east gate area are the worst. Therefore, the most important factor of artificial defense in urban defense and the most complicated urban defense system are. On the whole, God arm city defense system with a reasonable site selection, Yamagata appropriate use of water potential, interdependence of the four major defense zones, multi-level three-dimensional defensive point, the narrow walls of the wall and Qiaobu underground passage and many other features, and other mountain phase Comparison, 堪称 Zhucheng model.