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Petroleum exploration of marine deposit,shallow,Carboniferous andvolcanic tuff reservoir in the western

Wang Jianyong,Wang Xuezhong,Ma Liqun

Strategic Study of CAE 2012, Volume 14, Issue 7,   Pages 81-86

Abstract: style="text-align: justify;">In 2011, petroleum exploration of marine deposit,shallow,Carboniferous,and volcanictuff reservoir realized breakthroughs at Chepaizi slope in the western margin of Junggar Basin, PaiMagma volcanic activity provides the basis for volcanic reservoir development and distribution.The weathering crust and secondary cracks developed volcanic tuff by strong rock weathering and dissolutionPermian and Triassic volcanic rocks or dense mudstone sedimentary cover as a regional seal for the late

Keywords： Carboniferous     volcanic tuff     marine deposit     shallow     the western margin of Junggar Basin    

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Petroleum geology and exploration for volcanic reservoirs in the sedimentary basins of China

Zhang Guangya,Zou Caineng,Zhu Rukai,Yuan Xuanjun,Zhao Xia

Strategic Study of CAE 2010, Volume 12, Issue 5,   Pages 30-38

Abstract: PetroChina, Beijing 100083, China)[Abstract]Carboniferour-Permian, Jurassic-Cretaceous and Paleogene-Neogene volcanicVolcanic reservoirs located near the source rocks are the most beneficial for hydrocarbon accumulation, so the hydrocarbon-generation centers control the hydrocarbon distribution, and the volcanic reservoirsThe lava, volcanic breccia and volcanics located in weathered crust are the dominant reservoirs.type and are formed near the source rock centers; in the basins of central and western China, volcanic

Keywords： volcanic reservoir     volcanic facies     key factors controlling the reservoir formation    

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Structural design and mechanical responses of closely spaced super-span double tunnels in strongly weathered tuff

Jiaxin HE; Shaohui HE; Xiabing LIU; Jinlei ZHENG

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 6,   Pages 685-703 doi: 10.1007/s11709-022-0824-2

Abstract: This paper presents a study of closely spaced double tunnels in Taizhou, China. One is Xiabei Mountain No. 2 four-line super-span high-speed railway tunnel (HRT), and the other is Xiabei Mountain double-line large-span subway tunnel (ST). The excavation spans of HRT and ST are 26.3 and 14 m, respectively. The two tunnels are located at different levels, and their separating distance is 17.2 m. Due to the short construction period, the HRT excavation was completed earlier than ST. The structural design of the HRT, taking account of the disturbance by the ST construction, was analyzed by a numerical simulation. It was found that the “yielding principle” design was more feasible than the “resistance principle” design when considering the safety and durability of the HRT secondary lining. The mechanical responses of the HRT during ST construction were comprehensively monitored and analyzed, including the vault settlement, horizontal convergence, surrounding rock pressure, and the internal stress in shotcrete and steel arch. Results show that the longitudinal influence range of the ST construction on the HRT was approximately 0.6–1.1 times the ST outer diameter; the disturbance was mainly generated in the ST upper bench excavation; and the final axial force of the HRT shotcrete was approximately 9–16 times that of the steel arch, which indicated that the shotcrete was the main bearing structure. The safety status of the HRT was assessed based on the monitoring data, and the minimum safety factors of the HRT shotcrete and steel arch were 1.61 and 1.89, respectively. Parametric studies were performed to show how the lining stress of HRT was affected by the relative angle, pillar width, ST excavation method and excavation footage. Finally, the design and construction optimization were proposed according to the monitoring data and parameter analysis results. This study might provide practical reference for similar projects.

Keywords： double tunnels     super-span     structural design     mechanical response     numerical simulation     field monitoring    

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The control factors and distribution laws of volcanic oil and gas reservoir in China

Hou Lianhua,Zhu Rukai,Zhao Xia,Pang Zhenglian,Luo Xia,Mao Zhiguo

Strategic Study of CAE 2012, Volume 14, Issue 6,   Pages 77-86

Abstract:

There are mainly 3 sets of volcanic rocks in sedimentary basins of ChinaIn the eastern basins of China, intermediate-acidic volcanic rocks and primary type reservoir are mainlyIn the western basins of China, mid-mafic volcanic rocks and weathering crust type reservoir are oftenAlmost all of the lithology and lithofacies of volcanic rocks can form effective reservoir.in China, and the predicted equivalent reserve in volcanic rocks is above 6×109 t.

Keywords： volcanic rock reservoir     igneous reservoir     reservoir formation control factors     reservoir distribution    

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Upper Lillooet River Hydroelectric Project: The Challenges of Constructing a Power Tunnel for Run-of-River Hydro Projects in Mountainous British Columbia Article

Nichole Boultbee, Oliver Robson, Serge Moalli, Rich Humphries

Engineering 2018, Volume 4, Issue 2,   Pages 260-266 doi: 10.1016/j.eng.2017.09.003

Abstract: The site is adjacent to the Mount Meager Volcanic Complex, the most recently active volcano in Westernchallenging, including a section through deposits associated with the most recent eruption from Mount Meager Volcanicdescription of the successful excavation of the tunnel through deposits associated with the recent volcanic

Keywords： Run-of-river hydro project     Power tunnel     Umbrella support     Canopy tubes     Volcanic deposits     Pumice     Roadheader    

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Title Author Date Type Operation

Petroleum exploration of marine deposit,shallow,Carboniferous andvolcanic tuff reservoir in the western

Wang Jianyong,Wang Xuezhong,Ma Liqun

Journal Article

Petroleum geology and exploration for volcanic reservoirs in the sedimentary basins of China

Zhang Guangya,Zou Caineng,Zhu Rukai,Yuan Xuanjun,Zhao Xia

Journal Article

Structural design and mechanical responses of closely spaced super-span double tunnels in strongly weathered tuff

Jiaxin HE; Shaohui HE; Xiabing LIU; Jinlei ZHENG

Journal Article

The control factors and distribution laws of volcanic oil and gas reservoir in China

Hou Lianhua,Zhu Rukai,Zhao Xia,Pang Zhenglian,Luo Xia,Mao Zhiguo

Journal Article

Upper Lillooet River Hydroelectric Project: The Challenges of Constructing a Power Tunnel for Run-of-River Hydro Projects in Mountainous British Columbia

Nichole Boultbee, Oliver Robson, Serge Moalli, Rich Humphries

Journal Article