圧力セル・ストレス計・変形ゲージ Borehole Pressure Cells ・ Stress Meters ・ Stress Cells ・ Borehole Deformation Gages |
|
標準ボアホール・プレッシャー・セル(BPC)は岩盤のストレス変化の測定に用いられ、
ボアホール内にグラウトで固定されます。 |
|||
●仕様 | ||||
Standard Ranges | 25, 35, 70 MPa (3000, 5000, 10000psi) | |||
Sensitivity | 0.25% of Range (approximately) | |||
Accuracy | 0.25%
F.S. (gage), 0.1% F.S. (VW transducer) |
|||
Borehole Size | 57mm (2.25in.) | |||
L x W x H | 210 x 51 x 6mm (8.25 x 2 x 0.25in.) | |||
|
岩のストレス変化の測定に適しています。 |
|||
●仕様 | ||||
Range in Compression | 70 MPa (10,000psi) | |||
Range in Tension | 3 MPa (500psi) | |||
Sensitivity* | 14 to 70 KPa (2 to 10psi) | |||
Temperature Range** | -20℃ to +80℃ | |||
Borehole Dia. 4300-EX | 37 to 39mm (1.45 to 1.55in.) | |||
Borehole Dia. 4300-BX | 58 to 61mm (2.30 to 2.43in.) | |||
Borehole Dia. 4300-NX | 74 to 77mm (2.90 to 3.05in.) | |||
*Depends
on rock modulus **High temperature versions (up to 200℃) available on request |
||||
|
岩盤、塩岩、コンクリートや氷の圧縮ストレスを測定します。 |
|||
●仕様 | ||||
Standard Ranges | 70 MPa (10,000psi) | |||
Sensitivity* | 14 to 70 KPa (2 to 10psi) | |||
Accuracy | ±0.1% F.S. | |||
Temperature Range** | -20℃ to +80℃ | |||
Borehole Diameter | BX (60mm (2.36in.)) | |||
*Depends
on rock modulus **High temperature versions (up to 200℃) available on request |
||||
|
Model 4300 VW Borehole
Stressmetersの大きいバージョンです。 |
|||
●仕様 | ||||
Standard Ranges* | ±35 MPa (±5000psi) | |||
Sensitivity* | 35 KPa (5psi) | |||
Temperature Range | -20。℃ to +80℃ | |||
Borehole Diameter** | NX, PQ, HQ, 152mm (6in.) | |||
*Proportional
to rock modulus; figures given are for E = 0.03 x 106 MPa (5 x 106psi)
**Other diameters available on request |
||||
|
証明書付きUSBM-スタイル・ゲージです。 |
|||
●仕様 | ||||
Borehole Diameter | 38mm (1.5in.) EX-size diamond drill hole | |||
Sensitivity | 1.0 microstrain | |||
Min. Overcore Depth | 203mm
(8in.) (25mm (1in.) with reverse case) |
|||
Max. Overcore Depth | 15m (50ft) standard (60m (200ft) with extra cable) | |||
Length x Diameter | 267 x 35mm (10.5 x 1.375in.) | |||