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Dredging technology Dam piezometer

Xie pressure to leave the camp at the bottom of not less than 0.3-0.5m, to prevent the pressure of cobalt glance through the closed bottom tour. (4) in the dredging process. To closely monitor the changes in the dam (continued on page 25 j9 \● Hang Wei Zhou Yu books (Tianjin Bureau of Water Resources Engineering Management Office) Interpretation of Tianjin Ningchegu long 20m. design flow 2100m / s, 20 hole total of one 2x16t emergency gate hoist. hoist installed in an activity station car. to meet the car needs to move along the gate, pre-dried in the machine a bridge deck through the whole width of the gap castrated 80c dish, usually with a nearly rectangular block of iron pole sub 1mx2m concealed; moving car time. Gokg required manpower will be re-iron pole sons and a yixian move away. had all the benefits later on. This is repeated. not only work to teach low manual strength. and a bit negligent, who is likely from the air file in the instep to the bridge. is not safe. To ensure personal safety. reduce labor intensity. We have envisaged the use of machines powered car, the car moves automatically to milling swallow irregular ups and downs. in theory. envisaged three kinds of programs are possible, but difficult to put into practice reported by hoop too. Through careful analysis, and finally decided to adjust the hoist drum and the moving pulley layout. will be to narrow the gap spacing can guarantee the freedom of car base operations and personal safety to walk without having to affix the extent of the transformation of this program, In 1988,[link widoczny dla zalogowanych], the safe operation of two or three years now. This program proposed by the analysis of why the bridge needs to stay away from the reason blank SOcm song started . The smell using a twin-lift hoist. movable pulley group formed by two coaxial pulleys Park. wheel diameter 4ocm. wheel surface and the car moving perpendicular to the direction. fixed pulley hoist drum mounted on simple parts, wheel trough axis and the roller center distance of 60cm. so large deck space away from the inevitable. For the above reasons,[link widoczny dla zalogowanych], first of all. the moving pulley block apart. two sliding wheel trolley mounted parallel to the direction of the river Sanglei blame moving the same reason plane. done a round-N frame. pulley wheel frame and the thickness of the space required is greatly narrowed. and then. in Taiwan,[link widoczny dla zalogowanych], will hoist the car moves to the gap center 15cm. while fixed pulley and roller center distance of 60cm reduced to 30 by the gamma n. two such movable pulley on the rope between the four largest steel basket from different planes to shrink to 1Ocm. taking into account the rope and the bridge deck barrier between the need to ask. band gap leaving only 20cm more than sufficient. redundant sub-gap covered with cantilevered iron pole. In addition. also need the main and auxiliary machinery of the roller with the gear swap your position. to reduce the wire rope and roller screw measures the angle between the . This is because the twin-lift hoist the main and auxiliary machinery rotating drum groove to just the opposite. movable pulley of the layout changed. If the above exchange, wire rope still wound from the drum ends to the middle. when the moving rose to the upper pulley when the test paper. drum groove direction and angle between the wire rope to be over the allowed limit angle (7.1.) 2.4 '(according to calculations. actually up to 9.5'). so 【paint on the bow of serious friction and rattled. exchange location. drum roll groove spiral direction and the corresponding change in the direction of justice. the rope from the middle to both ends of the winding drum. when the moving pulley at the bottom when the rope angle Xisheng scroll small; When the volume rose to the upper part of the time. floating rope at both ends of the drum, and near to parallel to the rope roll angle and therefore small. intense friction noise from the bow 【disappeared. proved that. This transformation pay step, not only can avoid heavy manual labor, provide for the workers yesterday who clamor of security. is also similar to the gate. even providing gate design experience. (Continued from page 9) and the adjacent Pressure arm water levels. that exceptions should be when driving analysis and processing. Third, the clear fruit refined test methods and economic indigo light points toss off (a) of the special effects clear column test method 1. the pressure measurement has a water injection test. This work should be clear After deposition, stable pressure measurement arm position when bearing .2. to visit before and after the pressure arm damage has been under the same level of water level comparative analysis. (b) manometric economic analysis dam dredging technology successfully tested arm. I set up the project concept to solve the problem, to avoid failure caused by Xie pressure arm of long-term observations of disruption to ensure continuity of observations. dredging arm pressure measurement requirements for a new one about manometry 3O% tube also significant economic benefits of about t Tai'an City 6 In 1988 a total of dredging reservoir pressure measurement was 60. save 1O million in funds. save steel lot. reference text {t soup seeking purpose,[link widoczny dla zalogowanych], Rong Long, soil Lang failure to take pressure l Lu ● Man technology. Shandong Water. IDB port No. 1.

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