Pit Excavation
Pit Excavation - Related Videos
10:30
Soil Lysimeter Excavation for Coupled Hydrological, Geochemical, and Microbiological Investigations
0 Views •
Cited by 5 •
2016
This study presents an excavation method for investigating subsurface hydrological, geochemical, and microbiological heterogeneity of a soil lysimeter. The lysimeter simulates an artificial hillslope which was initially under homogeneous condition and had been subjected to approximately 5,000 mm of water over eight cycles of irrigation in an 18-month period.
04:46
Resorption Pit Assay: An In Vitro Technique to Quantify Calcium Resorption Activity of Mature Osteoclasts using Calcium Phosphate-Coated Culture Plates
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2025
In this video, we describe an in vitro osteoclastic resorption assay on calcium phosphate-coated cell culture plates cultured with human peripheral blood mononuclear cell-derived osteoclasts. The osteoclasts form a characteristic actin ring on the calcium phosphate-coated matrix of the cell culture plate and degrade the matrix within the actin ring region to release calcium and phosphate ions, resulting in the formation of distinct resorption pits within the degraded matrix.
07:03
A Simple Pit Assay Protocol to Visualize and Quantify Osteoclastic Resorption In Vitro
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Cited by 2 •
2022
Here, we present a simple and effective assay procedure for resorption pit assays using calcium phosphate coated cell culture plates.
09:16
Methods of Soil Resampling to Monitor Changes in the Chemical Concentrations of Forest Soils
0 Views •
Cited by 19 •
2016
Repeated soil sampling has recently been shown to be an effective way to monitor forest soil change over years and decades. To support its use, a protocol is presented that synthesizes the latest information on soil resampling methods to aid in the design and implementation of successful soil monitoring programs.
03:10
Soil Core Sample Collection for Water Retention Property Analysis
0 Views •
2026
Source:Alessia J. Marchesan1, Guillermo Hernandez Ramirez11Renewable Resources, University of Alberta. This video demonstrates the technique for collecting a soil sample for hydraulic property analysis. The sampling area is cleared, and the top crust is evacuated. The sampling ring is then placed into the soil to collect the sample. The ring with the sample is then cleaned, labeled, packed, and transferred undisturbed for analysis.
FAQs
Sidewalls remain stable when excavation methods match planned pit conditions. Shoring supports the walls, whereas sloping changes their geometry to reduce the likelihood of collapse. The choice is part of advance planning and must be coordinated with staged material removal. In environmental work, stable walls also protect soil-layer observations and sampling activities from disruption.
Groundwater and surface runoff may require additional control because water movement can affect the excavation area and contribute to erosion or sediment movement. Addressing these conditions during planning helps maintain the intended pit dimensions and limits impacts beyond the cavity itself. This is especially relevant in environmental work, where site disturbance can influence investigation conditions.
Staged removal allows soil and rock to be taken out in a controlled sequence while supporting planned sidewall protection. It lets the excavation proceed alongside shoring or sloping measures and helps limit unnecessary disturbance. In environmental investigations, progressive exposure can reveal soil layers for examination and sampling while maintaining attention to worker hazards.
Pit dimensions are planned before material is removed, and the intended use determines how much subsurface exposure is needed. Environmental investigation may require sufficient area to examine soil layers and collect samples, while construction or land-management work may have different spatial requirements. Connecting dimensions to purpose helps avoid unnecessary removal and disturbance.
A responsible workflow begins with planning pit dimensions and the excavation method, followed by staged removal of soil and rock. During excavation, the team maintains stable sidewalls through shoring or sloping and addresses groundwater or surface runoff when needed. Afterward, site restoration helps limit lasting effects, particularly erosion, sediment movement, and habitat disturbance.
Exposed pit walls provide access to soil layers that may not be visible at the surface. Investigators can examine those layers, collect samples, identify possible contamination, and assess subsurface conditions. These activities support environmental investigation, while controls for wall stability, water, and site disturbance help protect the work and reduce hazards during subsurface examination.
Restoration helps address environmental effects that can remain after soil and rock have been removed. It is part of responsible site planning because excavation can contribute to erosion, sediment movement, and habitat disturbance if the site is not managed carefully. Including restoration in the overall approach supports controlled land management beyond the sampling or construction phase.