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一、问题的引出 煤矿生产过程中,在开拓上下山轨道时,腰线的控制是很重要的,这就要求日常给设上下山腰线时保持一定的精确度。而常规给设腰线的方法是:用坡度规沿巷道一帮给设,这样存在着许多不足之处: 1.众所周知,巷道壁不可能十分规则,有许多凸出和凹进的地方,当给设腰线用的线绳拉直时,在中间某处就有可能被挡住而不能处于自然状态。如果这样给设腰线,当然就不准确。不得已只好用手将线绳拉开,让尾点处拉开一段距离保持水平且垂直于巷道壁,但水平、垂直都是用目估得到的,仍然存在着误差,且这种误差对腰线的给设影响很大。 2.有时两腰线点距离很近,如图1所示,
First, the problem leads to Coal production process, in the open up and down the track, the waist line control is very important, which requires daily to set up and down the mountain to maintain a certain degree of accuracy. However, the conventional method of providing a waistline is to use a grade of slope to provide a set of supports along the roadway so that there are many deficiencies: 1. It is well-known that the roadway walls can not be very regular, and there are many places protruding and recessed when When the cord for the waist line is straightened, it may be blocked somewhere in the middle and can not be in a natural state. If you set the waist line, of course, is not accurate. Last resort had to pull the rope, so that the tail point at a distance to maintain horizontal and vertical to the roadway wall, but the horizontal and vertical are used to estimate, there are still errors, and this error on the waist line The design of the great impact. 2. Sometimes two waist line distance is very close, as shown in Figure 1,