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一、关于导洞掘进工作 1.导洞掘进的劳动力粗织,采取井编号,人固定,两人一井,平行作业。 2.在导井断面布眼上,主要掌握是少打眼,集中装药。开口时眼深在0.8米内,少装药,保护井口不要震坏,进深2米后再加大眼深,增加药量。根据不同石质一般采用两种方法布眼:(1)石质软,结构松或石质坚、脆,如5～9类石,采用独眼药壶炮,如图1。打眼深度为1.2～1.8米,于底部装药烘大药壶,一般烘1～2次。装药第一次用0.15公斤,第二次用药0.3公斤。药壶烘成后最后装药4～6公斤起爆。(2)石质硬、结构紧密如10类石以上,采用两眼或三眼,如图2、3。眼深1.2～1.5米,或其中一眼打深其余眼稍浅如图3,可将1眼打深1.5米,下面2、3眼
First, on the guide tunneling work 1. Guiding tunneling labor rough weaving, take well number, fixed, two people a well, parallel operations. 2. Guide hole in the cross-section of the cloth, the main control is less drilling, concentrated charge. When the opening of the eye deep within 0.8 meters, less charge, protect the wellhead earthquake damage, depth 2 meters and then increase the eye deep, increase the dose. According to different types of stone, two methods are generally used to cloth the eyes: (1) soft stone, loose or sturdy stone structure, brittle, such as 5 to 9 types of stone, single-eyed pot, as shown in Figure 1. Drill depth of 1.2 ~ 1.8 meters, at the bottom of the big baker medicine drying, the general bake 1 or 2 times. Charge 0.15 kg for the first time and 0.3 kg for the second time. Dried pot after the final charge of 4 to 6 kg detonated. (2) Stones are hard and the structure is close, such as above 10 types of stones, with two eyes or three eyes, as shown in Fig.2 and Fig.3. 1.2 to 1.5 meters deep in the eye, or one of the other eyes to deepen the depth of the other shallow, as shown in Figure 3, one eye deep 1.5 meters, the following 2, 3 eyes