深部采矿工程多功能相似模拟装置

A Multi-functional Test Apparatus for Deep Mining Engineering

以千米埋深为基本条件,根据相似模拟试验需求,研制了1种结构紧凑、一机多用的相似模拟试验装置。该装置由模型加载反力框架、模型加载装置及智能液压控制系统等组成,具有结构简单、操作方便、强度高、加载能力大、整体稳定性好、双向四面可调非均匀加载等明显优势。以淮南顾桥煤矿1115(1)工作面为研究背景,利用该试验装置进行深井大断面沿空留巷过程相似模拟试验研究,结果表明:利用该试验装置可以较好地实现沿空留巷过程这一复杂采矿活动相似模拟试验,且试验结果与现场实测相吻合,能较为准确地反映现场实际情况。

Taking an underground excavation(roadway/tunnel) with a buried depth of over 1 000 m as the basis condition, a simulation test apparatus with compact structure and multi-function was developed on the basis of requirements of similar simulation test. The new apparatus consists of three main units, namely the model loading reaction frame, model loading device,and intelligent hydraulic control system, and it possesses some remarkable technical superiorities such as simple structure, high strength, large loading, good stability and biaxial four-side adjustable non-uniform loading. Taking 1115(5) coal mining face in Guqiao Mine as the study case, a similar simulation study on the process of gob-side entry retaining with large section in a deep mine was conducted by the test apparatus. Test results showed that a similar simulation on the process of gob-side entry retaining which was complex mining activity was well done, and the test results coincided with the field measurements. The site actual conditions were accurately reflected by the test results.