小纪汗煤矿抗采动变形试验房变形规律研究
Study on deformation law of testing building with anti-mining induced deformation in Xiaojihan Coal Mine
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摘要: 为了检验建筑物的抗采动安全性,小纪汗煤矿在11201工作面采动影响区修建抗变形结构试验房,并在试验房和附近地表布置建筑物变形观测点,进行变形观测。试验房经历了地表移动变形的全过程,保持完好。对观测数据进行总结、分析,研究试验房的变形规律,结果表明:按照该抗变形标准修建的建筑物至少可以抵抗最大下沉量1 500 mm、倾斜7.7 mm/m、水平拉伸变形量10.15 mm/m和水平压缩变形量-9.15 mm/m的变形,此次抗变形试验的结果可由11201工作面推广至首采盘区乃至整个井田,并在实践中不断完善,可以使该矿达到不搬迁开采的目的,并在陕北地区进行推广。Abstract: In Xiaojihan Coal Mine, a testing building with anti-deformation structure was built on No. 11201 working face in order to test the building safety by minin g influence. The observation points of building anti-deformation were made on the testing building and its surface around in order to observe the deformation. Through t he whole process of the surface movement, the testing building was kept in a good condition. The laws of building deformation was analyzed and the deformation value s were concluded. The results showed that the anti-deformation building with current standard can at least resistant to the deformation values of subsidence 1500 mm, i ncline 7. 7mm/m, horizontal tensile deformation 10. 15 mm/m and horizontal compression deformation-9. 15 mm/m. The test results by No.11201 working face can appl y to the first panel and the whole mining area, and then continuously improve in practice. It also is proved that it was feasible to make mining without relocation in the m ining area and north Shaanxi Area.
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