用系统理论和方法解决“三下”采煤复杂问题

应用他组织系统理论和Simulink方法探索合理直观地解决多问题和多任务的复杂“三下”采煤问题。通过工程实例构造了系统模型，并对某工作面为防止水体下泄和建筑物破坏进行确定限制采高和工作面终采线位置优化。分别得到限定采高和终采线距建筑物水平距离的优化结果。表明该方法具有方法较简便、结果较合理，过程直观和计算工作量小的优点。

Systematic Theory and Method Applied to Solve Complicated Coal Mining Problems Under Three Circumstances

The paper summarized fully mechanized repeated mining, especially overburden failed depth, scope, status and development feature under the conditions of slicing mining and caving mining base on a comparable study on overburden failure law under fully mechanized coal caving and slicing mining method. An initial mining depth in the thick seam or a depth of a full seam cut will cause an obvious increasing in crack height and also in horseshoe distribution. A depth of the repeated mining depth increased generally will not have a obvious increasing in water conducted cracking zone. In comparison between a full mechanized coal caving mining and fully mechanized coal slicing mining, the water conducted crack height of the first mining method will be 85 % higher than the second mining method. To reduce an initial mining depth in thick seam slicing for reduction of the water conducted crack zone development and to improve coal mining efficiency and mine economic benefit with increasing a repeated mining depth is a new method recommended for the present coal mining operation under water body. A coal mining method with a combination of a slicing and caving, a double benefit in control of water conducted crack zone development and in reduction of coal production cost can be obtained.