SU985294A1 - Method of controlling rock pressure in longwall - Google Patents
Method of controlling rock pressure in longwall Download PDFInfo
- Publication number
- SU985294A1 SU985294A1 SU813267525A SU3267525A SU985294A1 SU 985294 A1 SU985294 A1 SU 985294A1 SU 813267525 A SU813267525 A SU 813267525A SU 3267525 A SU3267525 A SU 3267525A SU 985294 A1 SU985294 A1 SU 985294A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- lava
- roof
- rock pressure
- length
- collapse
- Prior art date
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- Silicates, Zeolites, And Molecular Sieves (AREA)
Description
(54) СПОСОБ УПРАВЛЕНИЯ ГОРНЬМ ДАВЛЕНИЕМ В ЛАВЕ(54) METHOD OF CONTROL OF MOUNTAIN PRESSURE IN LAVA
Изобретение относитс к горной промьшшенности и предназначено дл управлени горным давлением в лаве при разработке угольных пластов. Известен способ управлени горным давлением в лаве tlj. Однако данный способ недостаточно безопасен. Известен способ управлени горнш давлением в лаве полным обрушением кровли с образованием свода обрушени над очистной выработкой С2. ОднакЬ данный способ характеризуетс также недостатЪчной безопасностью . Цель изобретени - noBtoiieHHe безопасности работ по управлению горньЫ давлением за счет предотвраовенн его усиленных про влений. Поставленна цель достигаетс тем, что в способе управлени горным давлением в лаве полным обрушением кровли с образованием свода обрушени над очистной выработкой, длину лавы принимают меньше эквивалентного про- лета раскрыти свода обрушени и определ ют ее по формуле пН-2ш a.j ; где а - длина лавы, м; п - средний показатель прочности пород массива; Н - средн глубина проектируемой п ва, м/ ,33- коэффициент запаса устойчивости свода; 2ш - ширина вентил ционного и конвейерного штреков, м. Лава окружена массивом угл или уголывАШ целиками шириной не мейее 0,1Н (Н - глубина от земной поверхности до верхней кромки целика). В таблице представлены определени показател п дл различных угольных бассейнов СССР. Бассейн, месторождениеThis invention relates to the mining industry and is intended to control rock pressure in lava during the development of coal seams. There is a method for controlling rock pressure in lava tlj. However, this method is not safe enough. There is a known method of controlling the pressure in the lava by the complete collapse of the roof with the formation of a set of collapse above the clearing production of C2. However, this method is also characterized by lack of security. The purpose of the invention is the noBtoiieHHe of the safety of the work on the management of pressure mines due to the prevention of its enhanced manifestations. The goal is achieved by the fact that, in the method of controlling rock pressure in lava, the complete collapse of the roof with the formation of a camber over the clearing generation, the length of the lava takes less than the equivalent span of the camber and is determined by the formula pN-2b a.j; where a is the length of the lava, m; n - the average strength of rocks of the array; N is the average depth of the projected PA, m /, 33 is the coefficient of stability of the arch; 2sh is the width of the ventilation and conveyor drifts, m. Lava is surrounded by an array of coal or coal angles with pillars not more than 0.1 N wide (H is the depth from the earth's surface to the upper edge of the rear sight). The table presents the definitions of index n for various coal basins of the USSR. Pool, field
П4 одолжениё таблицыP4 favor table
ДонецкийDonetsk
Печорский (ИнтинскоеPechora (Inta
-ние)-nie)
В ланашское м-ниеIn Lanashsky field
(на Урале)(in the Urals)
Киэеловский Способ осуществл етс следующим образом По таблице дл даниого угольного бассейна принимаетс покаэатель (п) . При выемке угл на глубине разработк ( Н), чтобы избежать раскрыти свода и св занного с ним усиленного про влени горного давлени , длину лавы определ ют по рекомендуемой .формуле Предлагаемый способ позволит исключить дополнительные затраты на по вышение устойчивости кровли и груди забо , на усиление крепи очистного забо и его сопр жений. В результате увеличитс производительность очистных -забоев.The Kieel Method is carried out as follows. According to the table for the Dani coal basin, a pointer (p) is taken. When excavating coal at a depth of development (H) to avoid opening the roof and the associated increased pressure of the mountain, the length of the lava is determined by the recommended formula. The proposed method will eliminate the additional costs of increasing the stability of the roof and chest at the bottom, for reinforcement lining the clearing face and its joints. As a result, the productivity of wastewater treatment will increase.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU813267525A SU985294A1 (en) | 1981-04-02 | 1981-04-02 | Method of controlling rock pressure in longwall |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU813267525A SU985294A1 (en) | 1981-04-02 | 1981-04-02 | Method of controlling rock pressure in longwall |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU985294A1 true SU985294A1 (en) | 1982-12-30 |
Family
ID=20950327
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU813267525A SU985294A1 (en) | 1981-04-02 | 1981-04-02 | Method of controlling rock pressure in longwall |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU985294A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU763234B2 (en) * | 2000-11-10 | 2003-07-17 | Inco Limited | Method for performing wedge analysis for assessing wedge instabilities in underground openings |
-
1981
- 1981-04-02 SU SU813267525A patent/SU985294A1/en active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU763234B2 (en) * | 2000-11-10 | 2003-07-17 | Inco Limited | Method for performing wedge analysis for assessing wedge instabilities in underground openings |
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