目前煤炭工业中地下巷道维护所用的支护形式,不外被动支护（围岩破坏后作用于支架,如砌(石旋);木、金属、装配式钢筋混凝土支架等）、喷锚支护和不支护。为了更有效和经济地使用前二者及科学地进行不支护以扩大它的使用范围,对地下巷道拱的形状问题研究是十分必要的。 目前地下巷道处于地表下几百米深度。它受着岩体自重而引起的重力场和地质力场的作 At present, the support form for the underground roadway maintenance in the coal industry is nothing more than passive support (the surrounding rock is damaged and then applied to the support, for example, brickwork (stone rotary); wood, metal, fabricated reinforced concrete support, etc.) And do not support. In order to use the former two more efficiently and economically and scientifically do not support it to expand the scope of its use, it is necessary to study the shape of underground tunnel arch. At present underground tunnels are a few hundred meters below ground surface. It is subject to the gravity of the rock mass caused by the gravitational field and the geological force field