Iron Eagle's Nest section of the main adit B shot

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Iron Eagle's Nest section of the main adit B Construction Improvement gunite smooth blasting

, Punch a hole no matter how good the quality of the explosion is not expected to move there will be while La effect put security matters, therefore, must follow the prince Yu packing charge charge structure prince Yu】 3. Detonator foot line; 2. Foam mud; 3. Forward from the floor Cartridge; 4. Air Cui; 5. Volume B turnip drug exposure I sent back from the technical requirements and safety operation for. Apart from a commitment perforation music filling the depression of the borehole water, eyes closed, each with a charge stemming plug perforation should hold soil well fitted, the first, two stage light pound vibration force to slow. Stemming future tuck times ... hard to be tamping. Stemming pound, the gluttonous protect the fuse (detonating tube, detonators foot line) to make it from bending and breaking, block length, depending on the borehole depth and diameter of the size, we generally filling 20cm. 2,4-cutting way Holes drilling blasting the quality is very difficult conditions, and cutting a large extent determine the quality and other borehole blasting effect. Therefore, the rational choice approach and ensure the cutting quality with guns is an important aspect of improving utilization shot hole. According to mine rock properties, roadway cross-section, we chose to grab the vertical shape cutting. The cutting mode, with a large cutting area, the total number of small blast-hole, blasting efficiency, and can basically meet the multiple learning the advantages of rock machine at the same job, but the direction and angle of drilling is difficult to grasp. There is no certain technical qualities. Higher level of operating ashamed, not trough does not dig out of that bracket and the mystery of collapsing ring preparation. To this end, we research and practice through repeated, using a vertical wedge cut \Summarized as: a. Determine the width d, depth L and H Gen eye position A; b. The mouth through the eyes of the horizontal line perpendicular to the face as the base line of P; c. Measure out equal in the Qianzai difficult point on the N as the base point; 'd. Alignment of the drill head has eye position A, the drill rod and the reference line P in the same plane, so shake the rig, when the reference point to the baseline P O N distance exactly equal to the width (i fundus distance d with the difference half, when the drill rod is under the direction we want to grasp the drilling direction. Similarly run the rule stack 48 Ying Mine Design and Construction l 1995 decision bamboo coral 2.3.3 maintenance curve according to comprehensive analysis of various types of diagnosis, Kua were seized, as appropriate. can be seen in around 3, 1992 curve upward trend in winter to 993 in February down curve after repair equipment, equipment in work area. May repair equipment declined again after the curve of the normal operation of equipment maintenance shown in Table r. Table 71 993 miles on 3 cone crusher table column pass shouted anti _ _ eyelid edge repair single-blind time management and site management refuse Orange case in February between the host vehicle inspection system within the Shu Pei, Cheng Ping axis, large sets of spherical copper tile gap setting adjustment. May the Department of Screen Games Workshop horizontal axis alkaline miserable, bushings replaced. Ai-pressure system around the choke insult .2.4 equipment diagnosis and effect on the cone model using state of diagnostic techniques, the fixed point, timing, monitoring and management. According to monitoring data, equipment status display depicts curves, curves observed trends. to establish diagnostic criteria to determine the risk of failure points, using spectral analysis, fault diagnosis correctly set point. 3 years, the use of diagnostic technology theory, be targeted maintenance, failure to master the laws governing the operation of the aircraft. host internal fault occupies about 80 single fault failure cycle. too generally about half a year of medium-fault. to carry out equipment diagnosis, early detection of potential equipment failures, improve the release Cheung prediction. Received 1994-1O-14 (on the next page section 4O) Experience with the following formula: P = 1 +0.013 S-type in a working state, pressure P, / VrPas - conveying pipe length, m. pressure than the general high pressure nozzle work around 0.1MPa. by adjusting the water nozzle at the width of the ring to control the water pressure. nozzle away from the rock surface by the spray distance, the general control O.8 ~ lm, the central angle of not less than 70. a jet of thickness 50 ~ 70ram as well. We work in the banner, in general, a two-tiered spray interval to achieve the design thickness 2h is usually around the first layer after layer of spray should be after the concrete pour firmware, if the final setting lh after the injection, the spray should be used to clean the surface feng shui. accelerators of the content quality of cement is generally not more than 3 ~ d, excessive doping accelerator, the late strength of concrete have adverse effects. too small you will not achieve quick-setting role. onions workers proved. Adit wooden cargo boat in the large section work, the use of smooth blasting spray is a good anchor. Shotcrete rock support the timely closure and can quickly and rock tightly bonded to form a full bitch, reducing exposure time Kids in rock. smooth blasting can effectively maintain the integrity of rock, for the creation of favorable conditions for safe construction to ensure the rapid construction and engineering quality. Therefore, the smooth blasting spray anchor Construction is a technically feasible and economically reasonable, safe, reliable and Farm on the integrated reservoir engineering technology, should be vigorously promoted it, Received mortar of 1994_10_l0
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