The instrument used to measure geotextiles and related products ability to resist falling from a fixed height of cone penetration, characterized Jianshih drop in the extent of damage on the surface of the geotextile geotextile caused by its performance in line with the national standard GB / T17630 "geotextile related products - Dynamic perforation test downing cone method" requirement. Second, geotextile Dynamic perforation detector principle: the horizontal geotextile specimen holder in the clamping ring, making provision quality cone height from 500mm fall on the sample in the sample to form a hole, then mark a graduated amount of small angle cone insert hole penetration measured in degrees. Three, geotextile Dynamic perforation analyzer [standard]: GB / T17630 "geotextile related products - Dynamic perforation test downing cone Law" The scope of application: used to test a variety of geotextile material to resist falling from a fixed height cone penetration ability to characterize the performance of geotextile material resistant rock fall. Technical Parameters: 1. The inner diameter of the clamping ring: 150 ± 0.5 (mm) 2. Samples from the cone steeple to: 500 ± 2 (mm) 3. Stainless steel cone: cone angle: 45b, the total mass: 1000 ± 5 (g) 4. Cone volume mass: 600 ± 5 (g) 5. Dimensions: 435 × 575 × 1600 (mm) 6 Instrument Weight: 55Kg four, dynamic perforation meter structure (See figure) mainly consists of frame, cone free fall part of the device, the clamping rings and other components. Frame: the base 12, column 10, top plate 2 and the intermediate beam (4) rigidly connected to devices such components. Under the base 12 has four adjustable feet 11 feet 11 by adjusting so that bubble level 13 blisters center, you can make the instrument is level. ? Clamping ring: clamping ring flange clamping ring 9, by eight bolts tightened to clamp mounted like?. ? Free fall device: 5 ends connected with a guide rod 1, placed on the machine, the middle beam and roof rack 4 2 does not affect the cone has decreased the rate of pilot hole, the middle beam 4 is also equipped with a locking handle 3. Cone rising to the height of free fall distance of 500mm, to achieve the perforation of the sample. Below the middle beam 4 also has a metal shield 7 and a transparent cover 8, after a good sample clip, pull the transparent cover 8, and then began to pull the handle 3 let fall cone 5. Can promote transparent cover up after falling 8 to guard bayonet 6 (automatically locked transparent cover 8), to facilitate the operation. Five steps? Dynamic perforation analyzer installed in a smooth, solid foundation, then 4.1 will be adjusted to the level of the instrument. ? The cone 5 in the upper lock state. ? Onto the transparent cover 8, the sample holder without wrinkles in the clamping ring 9. ? Lay down transparent cover 8, tighten the handle 3, cone 5 free fall from a height 500mm on the specimen. ? Immediately rose to cone 5, so that cone 5 in Section 5.2 status, weight decrease in the amount of the cone into the hole, 10s reads the measurement data. ? Repeat End of Article 5.3 -5.5 samples to test requirements. ? Test results according to GB / T17630-1998 standard treatment. ? Dynamic perforation analyzer precautions when using? For safety reasons, make sure that each cone is at the upper cone live. ? To ensure the cone free fall, the pilot hole with debris is strictly prohibited. ? Please put down before the cone fall transparent shield. ? To avoid damage to cone tip, not for hard objects tested. ? Annex amount Cone: a