Qinghai Outdoor Mobile Toilet Installation
The installation of outdoor mobile toilets in Qinghai needs to take into account environmental characteristics such as high altitude, strong ultraviolet radiation, and large temperature differences, ensuring stability and functionality through scientific planning and meticulous construction. The specific process is as follows:
1. Adaptability Analysis of Installation Scenarios
The high altitude in Qinghai results in thin air, large temperature differences between day and night, and the presence of permafrost and strong wind environments. Before installation, it is necessary to evaluate the surface bearing capacity, permafrost depth, and seasonal wind variations, accurately calculate the thermal expansion and contraction coefficient of color-steel materials to prevent structural deformation due to temperature differences. For example, in areas with thick permafrost, deep foundations or frost-heave-resistant designs should be adopted to prevent foundation uplift from damaging toilet stability.
2. Site Selection and Foundation Treatment
Site selection should avoid areas prone to geological disasters (such as landslides and mudslides) and ecologically sensitive zones, prioritizing flat terrain with good drainage. Foundation treatment involves concrete pouring or prefabricated slab bedding, ensuring that the horizontal error of the bearing surface does not exceed 5mm to accommodate the frequent freeze-thaw cycles in the climate. For example, in permafrost regions, the foundation depth should exceed the local maximum permafrost depth to prevent frost heave from causing structural tilting.
3. Main Structure Assembly and Insulation
The main structure is assembled modularly, with color-steel sheets connected using high-strength galvanized bolts and seams sealed with sealant to prevent leakage. The walls feature a multi-layer composite structure: an outer layer of color-steel corrugated sheets, an inner layer of polyurethane foam insulation, with foaming completed in a constant-temperature and humidity-controlled environment to ensure closed-cell ratio. The insulation layer and sheets are combined through physical anchoring and chemical bonding to prevent cold bridges, adapting to temperature variations from -30℃ to 30℃.
4. Sewage Disposal and Energy System Design
In areas without municipal sewage networks, a negative-pressure sewage disposal system is used, maintaining pipeline negative pressure through a micro vacuum pump to direct waste to sealed collection containers, with key emphasis on controlling pipeline sealing and negative pressure values. The energy system integrates photovoltaic power generation, with photovoltaic panels installed flush with the roof curvature to reduce wind resistance. Energy storage devices use low-temperature lithium battery packs, paired with intelligent controllers for continuous operation during cloudy and rainy weather.
5. Intelligent Monitoring and Acceptance
After installation, a sensor network is deployed to monitor parameters such as odor concentration, liquid level, temperature, and humidity in real-time, with remote alerts enabled through IoT module networking. Upon completion of construction, three-dimensional laser scanning inspection is required, focusing on verifying verticality deviation (≤3mm), joint flatness (≤2mm), and airtightness (leakage rate ≤0.5% under high-altitude air pressure) to ensure compliance with design standards.
Additionally, some scenarios in Qinghai use factory-prefabricated finished toilets that can be used immediately upon connecting to water and electricity, equipped with barrier-free facilities and independent partitions, suitable for temporary projects such as scenic spots and construction sites.
