It is a kind of stope method. It also divides the ore block into two parts: mining room and pillar, mining first and then mining. When the ore body inclination angle is between 30° and 50°, the ore cannot be transported by means of gravity, and there are many difficulties in using the room and column method. (For ore bodies with inclined ore bodies 30° to 50°, it is difficult to solve mining operations). In this case, it can be considered to solve the problem by using the explosive force transfer method. The explosive force mining method is to throw the ore into the ore-extracting area by means of the explosive force at the time of falling mine. We call such a method for explosive mining. This mining method is to dig a rock drilling patio at the bottom of the ore body, preferably at half the position of the ore and the rock of the chassis. The advantage of this method of arranging the patio is that there is no downhole, the amount of waste rock is small, and the bottom plate is blasted. Relatively flat, less deposits in the chassis. Fan-shaped blastholes (medium or deep holes) in the rock drilling patio. A 01-38 or EA-100 rig can be used . The work of mining is to push the road upwards. Generally, it is concentrated rock drilling and blasting in several stages. 2 The surrounding rock must be allowed to collapse. Automatic Cellophane Wrapping Machine This machine is widely applicable to the automatic film packaging (with gold tear tape) of various single boxed articles, such as the medicine, health products, foodstuff, daily cosmetics, stationery articles, and audiovisual products. Automatic Cellophane Wrapping Machine,Semi Automatic Cellophane Wrapping Machine,Manual Cellophane Wrapping Machine,Cigarette Cellophane Wrapping Machine Ruian Science Machinery And Technology Co., Ltd. , https://www.science-packs.com
Performance Characteristics:
1. No need to regulate the height of two work tops of the machine when the mould is replaced, no need to assemble or dismantle the material discharge chains and discharge hopper. Reduce the replacement time of the mould four hours to the present 30 minutes.
2. New-type double safeguard mechanisms are used, hence other spare parts will not be damaged when the machine runs out of step without the stop of the machine.
3. Original unilateral hand swing device to prevent from shaking the machine adversely, and the non-rotation of the handwheel during the running of the machine can secure the security of the operator.
4. New-type double-rotary film cutting cutter can ensure no need to mill the blade during many-year use of the machine, which overcomes the defect that the traditional stationary single-rotary film cutting cutter was easily worn.
The essence of the explosive force transfer method: