Blast hole filling material and preparation method thereof, and blast hole filling method

A technology for filling materials and blast holes, which is applied in the fields of preparation, blast hole packing materials and blast hole packing, can solve the problems of increasing the difficulty of packing, easy dry shrinkage of the blast mud, loss of clogging effect, etc., so as to improve the construction efficiency and shorten the filling time. , the effect of low reaction heat

Inactive Publication Date: 2019-02-26
RAILWAY ENG RES INST CHINA ACADEMY OF RAILWAY SCI +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In tunnel blasting construction, due to the inconvenience of obtaining blasting mud on site, manual filling of blasting mud takes up a lot of charging time. In the case of water-rich geological sections, the blast hole will not stop flowing, which increases the difficulty of filling, resulting in the low filling rate of blast hole on site; In the construction of underwater drilling and blasting, in order to prevent the blasting of adjacent holes caused by shock waves, good fillin

Method used

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  • Blast hole filling material and preparation method thereof, and blast hole filling method
  • Blast hole filling material and preparation method thereof, and blast hole filling method

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preparation example Construction

[0041] figure 1 The bagged blast hole packing material is prepared based on the method for preparing the blast hole packing material provided in the embodiments of the present invention. Such as figure 1 As shown, 1 is a sealing aluminum buckle, 2 is a packaging bag, 3 is a sealing material, and 4 is an internal support rod.

[0042]According to the preparation method of the blasthole filling material provided in the embodiment of the present invention, after mixing the components of the blasthole filling material according to a preset ratio, put it into a packaging bag, put a support rod in the packaging bag, and seal it. Based on the preparation method of the blasthole filling material provided by the embodiment of the present invention, through reasonable proportioning and preparation process, the blasthole filling material can meet the blasting construction requirements and the performance requirements of the filling material, and has the characteristics of no stirring, e...

Embodiment 1

[0045] Cement, hemihydrate gypsum, fine aggregate, expansion agent, viscosity modifier, coagulant, retarder according to figure 1 Among them, the cement is selected from 52.5 sulfoaluminate cement, the hemihydrate gypsum is selected from α hemihydrate gypsum, the fine aggregate is selected from quartz sand with a particle size of 0.15mm-2.36mm, and the expansion agent is selected from UEA common type expansion agent , The viscosity modifier is selected from inorganic thixotropic agent, the coagulation accelerator is selected from lithium chloride, and the retarder is selected from tartaric acid. The performance test is carried out on the blasthole filling material formed after mixing, wherein the setting time of the test is carried out according to the GB / T1346-2011 standard test method.

[0046] 30min anchoring force test method, soak the blasthole plugging material in water and insert it into a rock hole with a diameter of 60mm, and use a press to test its anchoring force af...

Embodiment 2-3

[0050] According to the ingredients listed in Example 1, after changing the distribution ratio of each component, mix them. The mixing ratio and performance of each component are shown in Table 1.

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Abstract

The invention provides a blast hole filling material and a preparation method thereof, and a blast hole filling method, wherein the blast hole filling material comprises, by mass, 100 parts of a cementing material, 50-200 parts of fine aggregate, 5-10 parts of a swelling agent, 0.01-5 parts of a viscosity modifier, 0.01-1 part of a coagulant, and 0-1 part of a retarder. According to the present invention, the blast hole filling material provided by the embodiments has characteristics of no stirring, easy insertion, low reaction heat emission, rapid hardening, high blocking force and the like;and the preparation method and the blast hole filling method are simple and feasible, and can achieve manual one-hand operation, shorten the filling time, and improve the construction efficiency.

Description

technical field [0001] The invention relates to the technical field of blasting, in particular to a blasthole filling material, a preparation method and a blasthole filling method. Background technique [0002] At present, blasthole filling materials in blasting construction are mainly manual blasting mud, machine-made blasting mud and blasting mud plugs. In tunnel blasting construction, due to the inconvenience of obtaining blasting mud on site, manual filling of blasting mud takes up a lot of charging time. In the case of water-rich geological sections, the blast hole will not stop flowing, which increases the difficulty of filling, resulting in the low filling rate of blast hole on site; In the construction of underwater drilling and blasting, in order to prevent the blasting of adjacent holes caused by shock waves, good filling is required, but because the gun mud becomes thinner or lost under the action of flowing water, it loses its blocking effect; The physical and m...

Claims

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Application Information

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IPC IPC(8): C04B28/06C04B28/14F42D1/08
CPCC04B28/06C04B28/146C04B28/147C04B2111/00663C04B2111/00974F42D1/08C04B7/32C04B14/06C04B2103/0068C04B2103/0085C04B22/124C04B24/06
Inventor 孟海利刘子科谢永江薛里谭盐宾康永全王月华杨年华李林香孙崔源杨鲁郭云龙李康杨立荣张嘉林
Owner RAILWAY ENG RES INST CHINA ACADEMY OF RAILWAY SCI
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