西龙池抽水蓄能电站炸药库工程开挖与支护

Excavation and support of powder storage project for the Xilongchi Pumped Storage Power Station

山西西龙池抽水蓄能电站炸药库是为主体工程施工集中存放炸药、爆破器材的地点,为寒武系灰岩,岩层近于水平,构造裂隙N-E向陡倾,在外力作用下卸荷开裂,溶蚀夹泥严重,开挖过程中时遇顶拱塌块、溶洞、断层,所以进行了锚喷支护。由于雨季出现滴水、渗水、漏水,为此在支护措施上设置了防水和引排水设施。

The powder storage project of the Xilongchi Pumped Storage Power Station in Shanxi Province is a place that stores explosive powder and blasting equipment for the construction of the main bodies of Xilongchi Pumped Storage Power Station. The project site is located in the limestone rock stratum of Cambrian system and its rock layer is nearly horizontal. The structural fissures are in the NE direction. Due to the affect of external force, fissures are developed. In the excavation, the collapse from the top arc sometimes occurs and karst and fault exists, so the shotcrete anchorage support and water prevention and drainage facilities are needed.