42results about How to "Solve the problem of uneven settlement" patented technology

The invention discloses a device for solving the problem of local differential settlement of a pipeline through combination of a rotating compensation device and a hinge compensation device. The device comprises a first pipeline body (3), a second pipeline body (4) and a third pipeline body (5). The rotating compensation device (1) is mounted on the first pipeline body which communicates with the second pipeline body. The hinge compensation device (2) is mounted between the second pipeline body and the third pipeline body. The rotating compensation device and the first pipeline body are both horizontally arranged. According to the device, through combination of the rotating compensation device and the hinge compensation device, the problem of differential settlement of the pipeline caused by bracket base settlement can be solved, and the device is suitable for the situation that settlement of different degrees exists on the both sides of the pipeline.

The invention provides a moist curing method for accelerating subsidence and stability of coal gangue filling reclamation, and belongs to the method for agricultural or forestry reclamation of coal gangues. The moist curing method comprises the following steps: after filling a subsidence land by using the coal gangues, consciously filling water to soak a coal gangue aggregate, and accelerating subsidence and stability of the coal gangues; and stripping collapse surface soil by 1.0 meter at first before the rainy season, pouring the coal gangues in a collapse pit until the distance from the coal gangues to an earth surface by a designed elevation, leveling a coal gangue site, filling water in the site until coal gangue bodies are submerged, maintaining until the rainy season is finished, compacting for 4-5 times by using compacting equipment, and finally refilling the collapse pit by using the surface soil and leveling the site. The moist curing method has the advantages that (1) the collapse pit is refilled with the coal gangues at a time, and layered filling compaction is not required, so that reclamation cost is greatly reduced; (2) adverse effects of hydrophilic substances in the coal gangues to subsidence are eliminated, uniformity of subsidence is guaranteed to a maximum extent, compaction times are reduced, and leveling of a farmland is guaranteed; and (3) effects of rising and falling of groundwater level to coal gangue filling reclamation lands are reduced.

The invention provides a pavement construction with a hierarchically completely encapsulated roadbed and a construction method thereof. The pavement construction comprises the roadbed which is of a multi-layer structure; a waterproof roadbed enhancement layer is completely encapsulated on each layer of roadbed in a sealing manner, and the layers are superposed to form the overall roadbed. By adopting the pavement construction, water exchange of a roadbed bearing layer and the outside is blocked up while the bearing capacity and the stability of the roadbed are improved; surface water, roadbed slope ooze water and underground water can be prevented from entering the roadbed bearing layer and the pavement construction to affect the bearing capacity and the stability; moisture content control of a roadbed material also can be ensured while water damage is effectively solved, so that the roadbed normally works under the optimal moisture content in construction control for a long period of time; deterioration of the bearing capacity and the stability and serious differential settlement caused by moisture evaporation loss and heterogeneous migration of the roadbed are avoided; the use and full utilization of local materials in roadbed construction in areas with expansive soil, collapsible soil and the like with strong water sensitivity also can be achieved by virtue of stable control on the moisture content of the roadbed, and excavated spoiling, filling and borrowing of materials and transportation are avoided, so that the construction costs are saved, and energy conservation and environment protection are achieved.

The invention discloses a device for solving the problem of local differential settlement of a pipeline through two rotating compensation devices. The device comprises a first pipeline body (3) and a second pipeline body (5). The first rotating compensation device (1) is mounted on the first pipeline body, and the second rotating compensation device (2) is mounted on the second pipeline body. The axes of the first pipeline body and the second pipeline body are parallel, and the axes of the first rotating compensation device and the second rotating compensation device are parallel. The first pipeline body is connected with the second pipeline body through a short pipe (4). By arranging a heating pipeline in the mode, the problem of differential settlement of the pipeline can be effectively solved; and through rotation of the rotating compensation devices, the short pipe and a bend form a force arm, accordingly, free rotation in a pipeline constraint range is achieved, and free settlement of the two pipeline bodies in a designed range is ensured.

The invention discloses a construction process of a non-uniform settlement control structure for a high-speed railway tunnel passing through an airport road surface. To build plain soil, on-site pouring foam lightweight soil foundation in sections, partitions, and layers on the plain soil, or fill reinforced soil layers layer by layer, lay geogrids between the reinforced soil layers, and lay geogrids between the reinforced soil layers. Pave the geocell on the upper layer, pave gravel on the geocell, and set multiple deformation joints along the longitudinal direction; carry out the construction of the pavement structure layer and other auxiliary facilities, and adopt the above-mentioned construction technology to form uneven settlement of the subgrade control structure. The invention has the advantages of improving the overall uniformity of the soil foundation, adjusting the uneven settlement of the soil foundation, convenient construction, saving construction period, and successfully solving the problem of uneven settlement of the roadbed when the high-speed railway tunnel crosses the airport pavement.