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1. 发明授权

US4260194A Method and device for producing underground cavities using a driving shield 失效
标题翻译：使用驾驶盾牌生产地下腔的方法和装置
公开(公告)号：US4260194A
公开(公告)日：1981-04-07
申请号：US956787
申请日：1978-11-01
申请人： Friedrich-Karl Blindow , Jurgen Decker , Heinrich Kluibenschedl , German Munding , Armin Sowa , Harald Wagner
发明人： Friedrich-Karl Blindow , Jurgen Decker , Heinrich Kluibenschedl , German Munding , Armin Sowa , Harald Wagner
IPC分类号： E21D9/08 , E21D9/087 , E21D9/10 , E21C27/24
CPC分类号： E21D9/1073 , E21D9/087 , E21D9/1053
摘要： A method of producing an underground cavity in a driving shield advance operation comprises, prior to excavation, forming an annular slot corresponding to the contour and wall thickness of the shield ahead of the shield by using hot gas jets to form the slot and to separate a core from the surrounding rock formation, advancing the shield into the annular slot, and breaking out the core under the protection of the shield. The device for producing the underground cavity comprises a tubular drive shield adapted to be advanced into the cavity and having an interior support wall on which is rotatably supported a support member having an arm carrying a gas jet lance. The gas jet lance advantageously includes at least one gas nozzle directed forwardly to form an inwardly extending cavity ahead of the shield, and one or more nozzle discharges directing the gas laterally. The jet nozzle is rotated after it is advanced into the ground, and the gas jets form an annular slot ahead of the shield which accommodates the shield therein. The shield is then moved into the slot by the usual shield advance cylinders. Walls behind the shield are braced by a lining wall which, for example, may be thin walled rings which may be positioned in place.
摘要翻译：在驾驶屏蔽提前操作中产生地下腔的方法包括：在挖掘之前，通过使用热气喷射形成槽，形成与屏蔽前面的屏蔽的轮廓和壁厚相对应的环形槽，以形成槽从围绕岩层的核心，使盾构进入环形槽，并在盾构的保护下分裂核心。用于生产地下空腔的装置包括适于前进到空腔中并具有内部支撑壁的管状驱动屏蔽件，可旋转地支撑有支撑构件，支撑构件具有承载气体喷枪的臂。喷气枪有利地包括至少一个气体喷嘴，其向前指向以在屏蔽件前方形成向内延伸的空腔，并且一个或多个喷嘴排出物横向引导气体。喷射喷嘴在其进入地面之后旋转，并且气体射流在屏蔽件的前面形成一个环形槽，其中容纳护罩。然后屏蔽通过通常的屏蔽提前气缸移动到槽中。护罩后面的墙壁由衬里壁支撑，该衬里壁例如可以是可以定位在适当位置的薄壁环。

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