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瑚珊錫矿为坡积矿味,土岩的含石率很高,且礫石块度很大,第三采矿塌土岩含石率在30％以上,礫石最大块度在100公分左右。每班清理废石需要三十人以上,系人工挑运,其劳动强度非常大,而效率又低,其原因是因为当水槍冲击土岩时,土岩即行分离,小顆粒的泥砂均被冲击后的水流运走,而大顆粒的礫石,仃积在工作面内。随着冲击时間增長,仃积于工作面的礫石也随其增多,从而影响到水槍进行正規地掏槽及冲采。当水槍在工作面冲采适当时間之后,就应轉換工作面进行冲采,此工作面的廢石应作較彻底的清理。因为水槍在轉換工作向时,水槍效能將要在短时間之內受到影响,因而水榆轉換工作面也不应过于頻繁。
Huasha Tin Mine is a pit-plot mine with a high rock-bearing ratio and a very large gravel mass. The third mining collapsible rock contains more than 30% of rock and the gravel has a maximum of 100 centimeters. Each class requires more than 30 people to pick up waste rock, which is a manual pick-up. Its labor intensity is very large and its efficiency is low. The reason is that when the water gun impacts the rock, the rock separates and the small particles of sand are shocked After the water flow away, and large particles of gravel, Ding plot in the face. As the impact time increases, the volume of gravel on the work surface increases with it, thus affecting the regular cutting and drilling of the water gun. When the water gun mining in the face after the appropriate time, it should switch mining face mining, the face of the waste rock should be more thorough clean-up. Because the water gun in the conversion work to the water gun performance will be affected within a short time, so the conversion of the work surface should not be too frequent.