This standard specifies the design content and implementation requirements of vibration blasting. This standard is applicable to the blasting operation of exposing (opening) the protruding coal (rock) layer in the stone gate (or shaft). MT/T 958-2005 Technical conditions for vibration blasting of extruding coal seams in the stone gate MT/T958-2005 Standard download decompression password: www.bzxz.net

ICS 73.020
Registration No.: 167892005
Coal Industry Standard of the People's Republic of China
MT/T 958—2005
Technical conditions for vibrating blasting in rocky coal seams theconcussionhlaxlingmethud
2005-09-23Release
National Development and Reform Commission
2006-02-01Implementation
MT/T958—20CE
This standard is based on the coal safety regulations issued by the National Bureau of Production Supervision and the National Mine Safety Supervision Bureau and the coal prevention and control and implementation rules formulated by the Ministry of Coal Industry of the People's Republic of China (1995 edition) and is formulated based on the current situation and development trend of the site.
Appendix A of this standard is a scientific appendix.
This standard is proposed by the Science and Technology Development Department of China Coal Industry Association. This standard is specially drafted by the coal industry coal safety standardization technical committee. The independent drafting units of this standard are Qinghai Branch of China Coal Research Institute and Shunde Branch of China Coal Research Institute. The main drafters of this standard are: Meng Guizheng, Dang Dulin, Tang, Zhu Changming, Dong Nafeng, Lin Funi, etc. 1 Scope
Shimen exposed the protruding coal seam vibration blasting technical conditions three standards according to the design plan and implementation requirements three standards difficult to retreat with the old and old through the tooth plan city brand (cloud) layer curtain whole operation 2
dynamic blasting concussinnblastinshnrkblaslinnMT/T 95A—2005
After the Shimen exposed the protruding coal seam or in the solid five baking layer, under the conditions of narrow safety management and research measures, use the blasting limit, such as the method of charging the company and other methods to lure the media (guest) and the new solid mountain, in order to ensure the safety of the site personnel to choose the blasting work, 3 vibration blasting carbon prerequisite
mining experience difficult to move, must be prepared one of the following quality requirements. After training and planning for the effective right-door coal working face: the stone refers to the exit room with a penetration of less than 0.3mwwW.bzxz.Net
4 Strong dynamic blasting design
4.: The design of the strong dynamic blasting line must be included: the design of the strong dynamic blasting line, the design of the ... The intensity of the explosive group should be determined according to the positive agent. 5-2 times the intensity of the positive agent. The limit of the dynamic rate of excavation should be determined according to the monthly report of the mother section 4-5 meters below the gate. The limit of 4.4 zero dynamic blasting should be determined according to the section, lithology and coal size of the exploration. The surface must be oxygenated, and the plan view, surface preparation examples and parameter table description are included. The size of the H body bubble eye, including push and pull surface construction, type, depth, orientation, low-level charging, and the number of holes changed. The line making method and starting seat are shown in the parameter table A. 4.5 The reverse line of the vibration ignition device must be operated according to the following requirements: the forward charging structure is adopted in the gun victory except for a small thousand hours. The maximum depth of a production tube is greater than 3 hours. Each service degree is installed with 2 same-type and same-type ranges. The shock must be broken. The city resources cannot be suitable for 1 time. The power supply should be checked and the performance of the tube should be selected appropriately. The current flowing through the tube must reach the city's positive tube. The dryness range is more than times: the cable must be real. The cable must be insulated and the main auxiliary parts must be sealed. The ground source can be reduced as much as possible to reduce the increase of the power line. The control detonator should be used.
2.6 The detonation location of the coal mine is determined by the person in charge of the work permit ventilation system and the frequency of the design. Generally, the bottom parking lot or the ground blasting site is selected.
4.7 The reverse air door is set as the example 1. The distance from the working face to the high surface of the work face is determined by the ventilation system to ensure the expected vehicle exit degree. 4. The total cold electricity of the daily disaster avoidance route is determined by the person in charge of the coal mine according to the long door 1. The ventilation system of the working face and the expected reverse penetration of the explosives.
4. The production block can be made of gold or stone or pearl. The distance between the two distances is determined by the design case of strength design MT/T958-2005
5 Slow motion blasting design is approved and filed in the design of the coal mine. The person in charge of the screening machine design is approved by the superior management department (or mining bureau, company) for filing. 6.1 The vibration blasting working face must have an independent, reversible, and ventilated return air system. During blasting, the power supply in the return air system must be cut off immediately. Two strong reverse air doors connected to the same air system must be set in the old passage on the side of the area where the fire personnel are working and passing. The air sections such as the closed and air removed must be measured and checked. After inspection, the system will flow into other areas. 6.2 The person in charge of the construction must correct the problem according to the following points:! The blasting holes shall be carried out in sections, and detailed records shall be made. 1) The holes designed for blasting shall not hit the coal seam. The bottom of the hole shall be kept at a distance of 0.1m from the coal seam. If the hole has hit the coal seam, it must be filled with gun mud. The covering mud shall not be less than 0.2m in the hole. For blast holes that exceed the baking layer, the design shall be filled in sections of about 0.25m in length. All gun holes shall be filled with one to two water filters between the explosive and the sealing mixture. The mud shall be densely filled to the mouth. The core tubes of the same manufacturer and the same production batch shall be used, and the conduction test shall be carried out. The resistance deviation of the newly used sound tube shall not exceed 0.3. Before the dynamic blasting operation, the ventilation and electrical equipment must be fully inspected to ensure safety and reliability! Before the start of the blasting operation, the reverse air door must be closed! The single source in the return air system must be cut off. Personnel are strictly prohibited from making and passing through the return air system. During the blasting operation, the fire source must be completely eliminated within the range of 0m near the wellhead. During the blasting operation, the mine rescue personnel must be on duty at the designated location. After the blasting operation, the rescue personnel can enter the work area. According to the inspection results, the emergency measures such as rapid delivery, ventilation, and gas removal must be taken. Number
Qilan,
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auxiliary spit
brush reduction service
time record A
【Informative Appendix
vibration screw broken blasthole variable record format
Table 1 animation embedded blasthole parameters and detonation sequence table welcome you effect
long flow, governance
occupy Jinjiao
T/T 9582005
consultation design connection point format
MT/T 958—2005
reference literature
[1, State Administration of Safety Supervision of Mining. Mining Special Regulations No. 2001
[People's Republic of China Coal Industry, Coal Prevention and Comparison Book Paper State. Manlai Industrial White Society. 1595
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