公开(公告)号：US06454359B1

公开(公告)日：2002-09-24

申请号：US09697654

申请日：2000-10-26

申请人： Dae Woo Kang

发明人： Dae Woo Kang

IPC分类号： E21C4700

CPC分类号： F42D3/00 ,  E21D9/006

摘要： A tunnel blasting method is disclosed. The method including the step of drilling blast holes such as cut holes, cut spreader holes, floor holes and roof holes to predetermined depths and in a predetermined hole arrangement. The blast holes are loaded with one or more detonators and explosives, stemming the blast holes with stemming materials. The detonators are detonated using a triggering device. In the hole loading step, one or more air bladders are situated in each of the blast holes so that a front free surface or one or more small free surfaces are formed. As a result, a projective area toward a free surface is enlarged and a total blast pressure is increased to increase the fragmentation rate of a rock and reduce blast vibration.

摘要翻译： 公开了一种隧道爆破方法。 该方法包括将预定深度和预定孔布置的诸如切割孔，切割扩孔器孔，地板孔和屋顶孔的鼓风孔钻孔的步骤。 爆破孔装有一个或多个雷管和爆炸物，用引导材料阻止爆破孔。 使用触发装置引爆雷管。 在孔加载步骤中，每个喷孔中设置一个或多个空气囊，从而形成前自由表面或一个或多个小的自由表面。 结果，朝向自由表面的投影区域扩大，并且增加总鼓风压力以增加岩石的破碎速率并减少爆震振动。

公开(公告)号：US06428108B1

公开(公告)日：2002-08-06

申请号：US09630158

申请日：2000-07-31

申请人： Rex Henry Chase

发明人： Rex Henry Chase

IPC分类号： E21C4700

CPC分类号： E02F3/3414 ,  E02F3/80 ,  E04G23/006

摘要： An apparatus and method for removing floor covering. The apparatus includes a frame that attaches to the front end of a loader type vehicle. An arm connects to and extends forward from the frame, and has a tapered end portion with a terminal end to which a sharp blade attaches and extends forward for separating floor covering from a floor as the vehicle is driven forward pressing the blade against the floor. A deflector extends upward from on top of the tapered portion to deflect removed materials off of the top of the tapered portion. At least one resilient sweep extends downward from the frame to the floor and is vertically slidable relative to the frame to accommodate variations in the floor and vertical motion of the apparatus while maintaining contact with the floor to collect removed floor covering material ahead of the loader as floor covering is removed so that removed floor covering is not run over by the loader. A reservoir may optionally be supported by the arm for spraying water on the floor covering as it is removed to abate dust, which may contain hazardous material such as asbestos.

摘要翻译： 一种去除地板覆盖物的装置和方法。 该装置包括附接到装载机型车辆的前端的框架。 臂从框架连接并从框架向前延伸，并且具有锥形端部部分，当车辆被驱动向前按压刀片抵靠地板时，具有尖端的刀片附接并向前延伸的终端部分用于将地板覆盖物与地板分开。 偏转器从锥形部分的顶部向上延伸，以使移除的材料偏离锥形部分的顶部。 至少一个弹性扫描从框架向下延伸到地板并且可相对于框架竖直滑动，以适应设备的变化和设备的垂直运动，同时保持与地板的接触以收集装载机前面的移除的地板覆盖材料作为 搬运地板覆盖物，使搬运的地板覆盖物不被装载机运行。 储存器可以可选地由臂支撑，用于在地板覆盖物被移除时喷洒水以减轻灰尘，灰尘可能含有诸如石棉的有害材料。