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Study of the mechanism of the directed destruction of rock by non-explosive destroying mixtures

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Category: Mining

Last Updated on 21 July 2014

Published on 24 December 2013

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Authors:

I.G. Sakhno, Cand. Sci. (Tech.), Associate Professor, State Higher Educational Institution “Donetsk National Technical University”, Senior Lecturer of the Mining Department, Donetsk, Ukraine.

Abstract:

Purpose. To develop and study a new static method of rock directed destruction based on the stretching tension concentrators creation on the walls of the hole by means of special cartridge. Growth of tensions is provided by the volume increase of the non-explosive destroying mixture placed in the cartridge.

Мethodology. We offer the method of the directed destruction and the device for its realization. By the finite-element method we have studied the stressed state of the object destroyed by the suggested method. We have found the dependences between the coefficient of stretching tensions concentration on the walls of the hole and the structural dimensions of the cartridge. On the basis of the conducted analytical research, with the use of solutions of classic elastic theory and the Griffith-Irvin material failure theory, we suggest the method of calculation of the parameters of the directed destruction method.

Findings. We have obtained positive effect from the use of the method in the laboratory. We have carried out the experimental-industrial pilot test of the proposed technical solutions aimed at the destruction of granite blocks with uniaxial compression strength of 6-16 MPa at Hlebodarovskoye Mining Administration.

Originality. For the first time, the method of directed rock breaking by non-explosive destroying mixtures was proposed. Physics of the process and its parameters was studied.

Practical value. The use of the proposed method allows us to fulfill directed destruction of rocks of any strength without dynamic influences on the massif.

References:

1. Заявка 57-187044, Япония, МКИ В 02 С 19/18. Средство для разрушения каменных материалов и бетона / Сайто Акира, Накатани Сэйити, Мива Акира, Аги Исао, Исакаи Дзюк; Дэнки кагаку коге к.к., № 56-71233 заявл. 12.05.81, опубл. 17.11.82.

Aitou Akira, Nakatani Seiichi, Miwa Akira, Yagi Isao, Isogai Jiyun (1982), Japanese Application Publication JP 57-187044, В 02 С 19/18. Crushing agent, Denki Kagaku Kogyo Kk., Priority JP (1981)-71233 A. 12.05.81, Published on 17.11.82.

2. Заявка 57-136954, Япония, МКИ В 02 С 19/18. Средство для разрушения каменных материалов, в том числе бетона / Нисихара Акио, Мива Мотому, Тада Сюти; Асахи дэнка коге к. к., №56-23509 заявл. 19.02.81, опубл. 24.08.82.

Nishihara Akio, Miwa Motomu, Tada Shiyuuichi (1982), Japanese Application Publication P 57-136954, В 02 С 19/18. Crushing agent; Asahi Denka Kogyo Kk., Priority Jp (1981)-23509 A. 19.02.81, Published on 24.08.82.

3. ТУ У В.2.7-26.5-24478901-004:2007 Невибухова руйнуюча речовина. Технічні умови. – на заміну ТУ У БВ 2.7.00030937.089397. Без обмеження терміну дії. – Харьков: Госстандарт. Харьковский центр стандартизации и аэрологии, 2007. – 14с.

TTS У В.2.7-26.5-24478901-004:2007,(2007), Non-explosive destroying matter. Specification – instead of ТУ У БВ 2.7.00030937.089397. Without limitation of period of validity. GOSSTANDART, Kharkov Center of Standardization and Aerology, Kharkov, Ukraine.

4. Пат. вин. № 100062, МПК (2006.01) E21С 37/06 Спосіб руйнування гірських порід невибуховими руйнуючимим складами й патрон для його реалізації / І.Г. Сахно, М.М. Касьян (Україна). – a2011 00476; заявл. 17.01.2011, опубл. 12.11.2012, бюл. № 21. – 5с.:ил

І.G. Sakhno, M.M. Kasian, (2012), Pat. No.100062, MPK (2006.01) E21С 37/06 Мethod and cartridge for rock destruction with non-explosive destructive compositions. a2011 00476; application date Jan. 17, 2011, publication date Nov. 12, 2012; Bulletin no.21. pp. 5.

5. Сахно И.Г.Обоснование параметров разрушения горных пород с помощью невзрывчатых разрушающих составов / И.Г. Сахно // Геотехнічна механіка: Міжвід. зб. наук. праць  – 2011. – Вип. 93. – С. 245–253.

Sakhno, І.G. (2011), “Foundation of parameters of destruction of rock by inexplosive destroying compositions”, Geotekhnichna mekhanika, M.S. PolyakovInstitute ofGeotechnical MechanicsNAS of Ukraine. Dnepropetrovsk, Vol. 93. pp. 245–253.

6. Пат. № 60794, МПК(2011.01) G01L 1/10, E21С 37/00 Стенд для випробувань невибухових руйнуючих речовин / М.М. Касьян, І.Г. Сахно, (Україна). – u 2010 15412; заявл.20.12.2010, опубл. 25.06.2011; Бюл. № 12. – 6 с.: ил.

M.M. Kasian, І.G. Sahno, (2010), Pat. No. 60794, MPK (2011.01) G01L 1/10, E21S 37/00 Testbench for testing destructive non-explosives. U 2010 15412; application date Dec. 20, 2010, publication date June 25, 2011; Bulletin no. 12, pp. 6.

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