Qinghai Mobile Toilet Installation
The installation of mobile toilets in Qinghai requires following a scientific process, covering key aspects such as environmental assessment, structural design, system integration, and acceptance testing. The specific steps are as follows:
1. Adaptability Analysis of Installation Scenarios
Qinghai features an extreme climate with large diurnal temperature variations and deep permafrost layers. Before installation, a systematic assessment of ground bearing capacity, permafrost depth, and seasonal wind forces is necessary. For example, it is essential to accurately calculate the thermal expansion and contraction coefficient of color-coated steel materials to prevent structural deformation caused by drastic temperature changes. Additionally, it is important to avoid areas prone to geological disasters and ecologically sensitive zones to ensure site safety.
2. Site Selection and Foundation Treatment
The site should be flat with good drainage. Foundation treatment involves concrete pouring or prefabricated slab bedding, ensuring a horizontal error of the bearing surface does not exceed 5 millimeters. Given the frequent freeze-thaw cycles, the foundation must include expansion joints and use frost-resistant concrete materials to prevent cracking caused by repeated frost heaving.
3. Main Structure and Insulation Layer Construction
The main structure adopts modular assembly, with high-strength galvanized bolts and sealing gaskets used at connection points. Torque values must strictly comply with standards to prevent loosening. Color-coated steel sheets are fixed to steel frames with bolts, and seams are filled with sealant to enhance airtightness. The insulation layer employs a multi-layer composite process, with an outer layer of color-coated corrugated steel sheets and an inner layer filled with polyurethane foam. The pouring process must be completed in a constant temperature and humidity environment, and double fixation through physical anchoring and chemical bonding is used to prevent thermal bridging.
4. Sewage Disposal and Energy System Integration
In areas without municipal sewage networks, negative pressure collection technology is often used for the sewage disposal system. A micro vacuum pump maintains negative pressure in the pipes to ensure the directional transport of waste to sealed containers. For energy supply, a photovoltaic power generation system is integrated, with solar panels installed flush with the roof's curved surface. Energy storage devices use low-temperature lithium battery packs, equipped with intelligent charge-discharge controllers to adapt to the unstable power supply characteristics of high-altitude regions.
5. Intelligent Monitoring and Acceptance Testing
After installation, a multi-parameter sensor network should be deployed to monitor odor concentration, liquid level, temperature, and humidity in real-time, transmitting data to a management platform via IoT modules. During the acceptance phase, 3D laser scanning technology is used to compare the design model with actual point cloud data, focusing on detecting verticality deviations, seam flatness, and equipment positioning accuracy. Additionally, a dedicated airtightness test is conducted to ensure overall stable operation.
