Cccc First Harbor Engineering Co., Ltd.

Tianjin Port Engineering Institute Co., Ltd. of Cccc First Harbor Engineering Co., Ltd

Tianjin Port Engineering Quality Testing Center Co., Ltd.

Changjiang Wuhan Waterway Engineering Company

Jinfang Hou

Yiyong Li

Zengjun Li

Naishou Zhang

Chuang Du

Wei Pan

Binbin Xu

Aimin Liu

Danzhong Liu

Zhichao Dong

Naishu Zhang

Fanli Meng

Zhuocheng Li

Binlei Wang

Xiaoyan Zhang

Yifei Zhao

Provide is a method for real-time deviation monitoring of miniature pipe-roofing jacking pipes of spiral soil-discharging. The method includes: welding a measurement auxiliary pipe to an outer wall of a pipe-roofing steel pipe, providing a laser pen inside a front end of the measurement auxiliary pipe, and the laser pen emits a beam propagating from the front end to a rear end of the measurement auxiliary pipe. After installation, a male lock buckle and a female lock buckle are symmetrically welded onto the pipe-roofing steel pipe, and form an integrated structure with the pipe-roofing steel pipe. A measurement plate is fixedly mounted on a housing of a pipe-roofing drilling machine. During jacking, a change of a position of the beam on the measurement plate is observed to determine a deviation of a drill bit of the pipe-roofing drilling machine and the pipe-roofing steel pipe in real-time.

Methods for real-time deviation monitoring of miniature pipe roofing jacking pipe of spiral soil-discharging

The present application provides a water replacement type storage field construction method, including the following steps: construction of a water-stop enclosure; construction of drainage after enclosing: after enclosing the water-stop enclosure, draining water in an enclosed range of the water-stop enclosure, exposing a pit, so as to form dry construction condition; construction of a stacking yard: under the dry construction condition, constructing the stacking yard on the pit, including constructing a lower low-level terrace and a higher high-level terrace; wherein the low-level terrace is lower than an average water level at an outer side of the water-stop enclosure, the high-level terrace is able to be used for walking a stacking-reclaiming device, and the stacking-reclaiming device is able to convey material to or from warehouses; and construction of the warehouses: constructing warehouses on the low-level terrace.

Water replacement type storage field construction method and storage field

The disclosure discloses a test method for simulating sediment pollutant release under the effect of river channel erosion, which comprises preparing a test device, presetting a water depth and a flow velocity in a test water tank, and calculating a flow rate in the test water tank; paving the sediment in a sediment storage box, and covering an upper surface of the sediment with a water baffle; adding water into the test water tank until a preset water depth, starting a variable speed motor to drive a flow-making propeller to run to make the flow rate reach the required flow rate and keep the flow velocity constant; after the water flow becomes constant, the water baffle retracting to expose the surface of the sediment; opening sampling ports for layered sampling; measuring water; and respectively measuring concentration variation and vertical distribution features of sediment pollutant under different simulated power conditions.

Test methods for simulating sediment pollutant release under effect of river channel erosion

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Tianjin, China

Jinfang Hou