The project is located in Yuanjia Village, Liangjiazhuang Township, Lan County, Shanxi Province, and the landform type is loess hilly landform and Intermountain valley landform. At about 4:30 a.m. on October 3, 2019, surface subsidence occurred at about 90m north of Yuanjia Village, Liangjiazhuang Township, Lan County, accompanied by ground collapse, road tilting, ground cracking, slope landslides, etc. The main precipitating factor of surface subsidence is caused by mining, and engineering measures must be taken to ensure the safety and normal use of villagers' buildings and structures.
Since the construction started on May 25, 2020, a total of 4 drilling rigs were deployed, and the drilling construction of 98 grouting holes in the mining area was completed on August 29, 2020, with a total depth of 13,612 m, a treatment area of 10,440 m2, a total grouting volume of 14,516 m³, and a construction period of 97 days.
With the purpose of being responsible for customers and creating quality projects, we strictly control the quality of each process during the construction process, seriously and strictly inspect ourselves. Our technical personnel, technical personnel of Party A and on-site supervising engineers check and accept each item according to the design and specification requirements to ensure the quality of the project. The construction quality of the mining area treatment project fully meets the design requirements, and the quality is qualified to achieve the purpose of treatment.
