Hunan Tongrui Engineering Co., Ltd. —— Leading Innovator in Reservoir Grouting Engineering
Guarding Water Security with Precision, Building Safety with Craftsmanship
Established in 2005, Hunan Tongrui Engineering Co., Ltd. is a national high-tech enterprise specializing in reservoir grouting engineering. Over the past 18 years, the company has completed 32 reservoir grouting projects across Hunan, Guizhou, Jiangxi, Qinghai, and the Qinghai-Tibet Plateau, mastering advanced solutions for extreme geological conditions and harsh climates. With a mission of "Precision Grouting for Every Project, Safety Assurance for Every Dam," Tongrui has become a benchmark in reservoir anti-seepage reinforcement.
Technical Excellence: Mastering Grouting in Geological "No-Go Zones"
| Region | Geological Challenges | Tongrui's Innovative Solutions | Project Outcomes |
|---|---|---|---|
| Guizhou | Karst caves, fractured rock zones | Self-developed "Multi-Stage Pressure Control System" + Cave Rapid Sealing Technology (Patent No.: ZL202010XXXXXX) | 50% efficiency improvement, 92% seepage reduction in Wujiang River Basin reservoirs |
| Qinghai-Tibet Plateau | -30°C permafrost, high-altitude hypoxia | Thermal Pipe Insulation + Low-Temperature Fast-Curing Grouting Material (8 utility patents) | Qinghai Lake Reservoir grouting withstands over 300 freeze-thaw cycles |
| Qinghai/Gansu | High-altitude wind erosion, uneven strata | Smart Pressure-Flow Dual-Control Grouting Instrument for real-time optimization | 99.5% grouting density in柴达木Basin reservoirs (industry average: 92%) |
| Jiangxi/Hunan | Soft soil, dense river networks | Eco-Friendly Grouting Materials + Micro-Disturbance Construction Technology | 100% water quality protection in Dongting Lake Reservoir projects |
Project Footprint: From Rivers and Lakes to the Roof of the World
- Guizhou: Completed grouting for 12 karst reservoirs (e.g., Hongshui River Reservoir in Qiannan Prefecture, Dongfeng Reservoir in Zunyi), achieving "zero seepage" in cave-connected zones;
- Qinghai-Tibet Plateau: Constructed China's first high-altitude reservoir grouting project at Baxiao Reservoir in Yushu, Qinghai (4,500m elevation), setting a plateau grouting record;
- Hunan: Led grouting for 8 Dongting Lake Basin reservoirs (e.g., Xinyanghe Reservoir in Yueyang, Heimifeng Reservoir in Changsha), ensuring drinking water source safety with "eco-grouting";
- Jiangxi/Qinghai: Delivered grouting for 7 inter-provincial reservoirs (e.g., Zhelin Reservoir in Poyang Lake, Haergai Reservoir in Qinghai Lake), establishing a Technical Guide for Karst-Permafrost Composite Geology.
Cultural DNA: Grouting is Responsibility, Precision is Craftsmanship
- Safety as the Benchmark: All projects enforce a "Dual-Control" system (operator + safety officer verification), achieving zero accidents in the past 5 years;
- Precision as the Soul: Established a "Grouting Process Lab" simulating 12 geological environments nationwide to ensure tailor-made solutions for every reservoir;
- Green as the Principle: 100% eco-friendly cement/polymer-based materials with zero waste discharge, recognized as a "Green Construction Demonstration Unit" in water conservancy;
- Heritage as the Foundation: Implements a mentorship program pairing veterans (avg. 15 years' experience) with newcomers, covering 90% of China's geological types.
Flagship Projects: Strength Proven by Data
Baxiao Reservoir, Yushu, Qinghai (2023)
- Challenge: 8-meter-thick permafrost layer prone to frost cracking;
- Solution: Three-layer protection system of "Thermal Pipes + Insulation Layer + Fast-Curing Slurry";
- Outcome: Seepage reduced from 3.2L/s to 0.05L/s, freeze-thaw resistance 2x design standards, awarded the Ministry of Water Resources "Major Technological Breakthrough Award".
Dongfeng Reservoir, Zunyi, Guizhou (2021)
- Challenge: High cave connectivity causing grout loss;
- Solution: Innovative "Segmental Grouting + High-Viscosity Sealing Agent";
- Outcome: Grout utilization rate increased to 95% (industry avg. 70%), 100% reservoir storage capacity restored.
Future: From "Grouting Construction" to "Smart Water Security Ecosystem"
Tongrui is advancing grouting technology toward digitalization and eco-friendliness:
🔹 Developing a "Grouting Digital Twin Platform": Real-time simulation for seepage risk prediction;
🔹 Promoting "Zero-Pollution Grouting Materials": Ensuring no water body contamination;
🔹 Building a "Reservoir Health Archive": Establishing lifecycle grouting databases for every reservoir.
Hunan Tongrui Engineering Co., Ltd.
One grout at a time, one dam at a time —
Guarding the tranquility of rivers with precision grouting.
Service Commitments:
✅ 100% Geological Compatibility: Custom grouting solutions for every reservoir;
✅ 100% Safety Compliance: Post-grouting seepage ≤0.1L/s (national standard ≤1.0L/s);
✅ 100% Eco-Friendliness: Zero pollution, zero disturbance during construction.