Proposed modular intelligent heating equipment production and big data energy management center project, located in the Economic and Technological Development Zone of Dezhou City, Shandong Province. The project covers an area of 150 acres, with approximately 110 acres required for compaction construction. The original terrain features a deep pit up to -6 meters, which has been backfilled but the site is not leveled. The surface is covered with tree roots and cultivated soil. The design employs compaction methods for foundation treatment to meet the design requirements for the base level.

Preparation Phase:
(1) Access Road: To ensure the smooth progress of leveling work for reliable sites, construct access roads prior to the completion of the leveling process. Also, ensure proper safety maintenance. The width of the access road should be no less than 5 meters to facilitate the entry and exit of compaction equipment.
(2) Organize the arrival and assembly of equipment; bulldozers and compactors are in place.
(3) Site leveling: Use bulldozers and excavators to remove surface vegetation, weeds, and other domestic waste such as backfill soil from the site, to roughly level the existing site to meet the working surface requirements for machinery and equipment.
(4) To meet the green construction requirements, the current site land has been covered with a green net, adhering to the principle of removing the net as the leveling is done.
The principle of integrity is adhered to, avoiding large-scale land leveling, and proceeding in sections. Perform leveling and compaction work in a continuous flow, delivering a finished section after compacting and leveling each one.

Compaction by dropping heavy weights, involving the free fall of several to over a hundred tons of weight from heights ranging from a few to several dozen meters, to dynamically compact the soil, resulting in increased density and reduced compressibility. This method of reinforcement is primarily suitable for coarse-grained soils with particle sizes larger than 0.05mm, such as sandy soil, gravelly soil, loess, fly ash, miscellaneous fill soil, backfill soil, low-saturation silt, clay, slightly expansive soil, and collapsible loess. Compaction by dropping heavy weights refers to the method of rapidly consolidating the foundation by using heavy weights dropped from a height to improve the bearing capacity of soft foundation.
Also known as the dynamic consolidation method, it utilizes lifting equipment to elevate a 10-40 ton hammer to a height of 10-40 meters, allowing it to fall freely, compacting the soil layers with the force of the impact and shock waves. The ramming method is primarily used for sandy soil, unsaturated clayey soil, and filled land foundations. For unsaturated clayey soil foundations, continuous ramming or intermittent ramming in stages is generally employed; and the number of ramming cycles and the depth of successful compaction are determined through on-site testing as needed for the project. Existing experience indicates that under a ramming energy of 300-800 ton-meters, a depth of 6-10 meters of successful compaction can usually be achieved.
Request for iron oxide and mica sheets; locally distributed in the area, average thickness of 1.77 meters. Original soil foundation bearing capacity factor fak ≥ 120 kPa.
Groundwater Impact on Engineering:
The groundwater in this area is of the Quaternary aquifer type, and during the survey, the groundwater depth was measured between 1.62-3.52 meters. The main source of groundwater replenishment is atmospheric precipitation and upstream runoff, with an annual fluctuation range of 1.00-2.00 meters in groundwater level. The historical high water level is at 19.00 meters above datum. The design elevation for the compaction work face in the northern part of the site is 20.6 meters, and in the southern high-fill area, it is 21.5 meters. The distance from the exploration groundwater level to the compaction work face is less than 3 meters. Given that the groundwater level is shallow in this project, it is necessary to consider the impact of groundwater in the compaction design. Under heavy compaction with the hammer, the pore water pressure in the foundation can rapidly increase, causing local groundwater levels to rise quickly and leading to the "rubber soil" phenomenon due to the compaction action. Under limited construction conditions, and considering the actual site conditions, an appropriate construction plan should be adopted to reliably control the groundwater level within a reasonable range during compaction. Only then can a favorable compaction result of the foundation be achieved. Otherwise, the foundation "leak" caused by the rising groundwater level can lead to a rapid increase in pore water pressure, resulting in foundation slumping, which has consequences that are difficult to rectify.
Site Preparation Process Before Compaction Test
All original topsoil and vegetation, including roots and construction debris, have been removed by bulldozer to a depth of no less than 10cm and transported out of the site.
2. Reliable site leveling with the use of GPS and other surveying equipment to set the perimeter lines and elevation controls (based on design requirements for positive and negative elevations and the first foundation's bottom elevation, calculate the site leveling elevation after compaction to determine the overall settlement). Excavators for site leveling and reliable compaction machinery for smooth construction.
3. In the southern trial-compaction area of the laying-out exit zone, the trial-compaction area is set up to be approximately 15 meters in length and 60 meters in width. Within the area, the land is leveled and the compaction points are marked with red bags.