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1. 发明专利

JPH06160073A METHOD FOR MEASURING ROCK CUTTING DEPTH OF WEIGHT IN WEIGHT-TYPE ROCK CUTTING METHOD 失效
公开(公告)号：JPH06160073A
公开(公告)日：1994-06-07
申请号：JP33219392
申请日：1992-11-19
申请人： TAISEI CORP
发明人： KAWAKAMI JUN , GOTO HIDEKAZU , FUKUI KATSUNORI , YAEDA YOSHIHIRO , WAKIMOTO HIDEO
IPC分类号： E21C39/00 , G01B21/08 , G01H17/00
摘要： PURPOSE:To measure a depth for rock cutting by a weight accurately by providing a vibration measuring apparatus on the ground in the vicinity of a rock cutting point, and measuring the vibration energy of the rock bed when the weight hits the rock bed. CONSTITUTION:When a weight 1 is made to hit the ground, the rock bed in the vicinity of the contact part of the weight 1 is broken by the energy of the weight. The weight 1 penetrates into the rock bed. The penetration is determined by the kinetic energy of the weight 1 immediately before the weight 1 hits the rock bed, the penetration resistance of the rock bed and the shape of the weight 1. Among the ground vibration energy, the rock cutting depth and the falling height of the weight 1, there is the relationship expressed by the specified expression including the constants such as the physical property of the rock bed and the measuring distance. The weight 1 is suspended from a working ship. When there is an island in the vicinity, a vibration measuring apparatus 2 is provided on the land. Preliminary rock cutting is performed, and the constants, which are included in the specified expression, are determined based on the ground vibrating energy from the apparatus 2 and the rock cutting depth, which is visually obtained by a diver. The dropping of the weight 1 is performed at the same height in the entire region, and the rock cutting depth is computed.

2. 发明专利

JPH0754366A UNDERGROUND TANK FOR LOW TEMPERATURE STOCKPILING 失效
公开(公告)号：JPH0754366A
公开(公告)日：1995-02-28
申请号：JP21924093
申请日：1993-08-12
申请人： TAISEI CORP
发明人： OGAWA TOYOKAZU , FUKUI KATSUNORI , IIBOSHI SHIGERU
IPC分类号： E02D29/045 , E04H7/18 , E21D13/00
摘要： PURPOSE:To prevent the destruction and exfoliation of concrete caused by the expansion and contraction of the natural ground by providing the excavated natural ground surface with intermediate lining using material showing compressibility or expansibility by cooling. CONSTITUTION:In the case of the natural ground being dry at the time of excavation, water is supplied from borings 5, and in the case of excessive water pressure, the water pressure is lowered through the borings 5 to excavate a storage space. The natural ground face is provided with intermediate linig 1 using exapansive mateial, and plural lock bolts 2 are driven therein to prevent the collapse of the natural ground. The intermediate lining 1 is constructed by spraying mortar intermixed with air and foam styrene showing compressibility by cooling in the case of the natural ground being expanded by freezing and mortar with high water content showing expansibility by cooling in the case of the natural ground being contracted. Concrete lining 3 is then performed on the inside. The destruction and exfoliation of the concrete lining is thereby prevented even if the natural ground is contracted by freezing.

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